diff --git a/app.js b/app.js
new file mode 100644
index 0000000..5c1daab
--- /dev/null
+++ b/app.js
@@ -0,0 +1,34 @@
+var app = module.exports = require('appjs');
+
+app.serveFilesFrom(__dirname + '/content');
+
+var window = app.createWindow(
+{
+	width	: 1280,
+	height : 720,
+	icons	: __dirname + '/content/icons'
+});
+
+window.on('create', function()
+{
+	window.frame.show();
+	window.frame.center();
+});
+
+window.on('ready', function()
+{
+    window.require = require;
+	window.process = process;
+	window.module = module;
+
+	function F12(e) { return e.keyIdentifier === 'F12' }
+	function Command_Option_J(e) { return e.keyCode === 74 && e.metaKey && e.altKey }
+
+	window.addEventListener('keydown', function(e)
+	{
+		if (F12(e) || Command_Option_J(e))
+			window.frame.openDevTools();
+	});
+
+    window.dispatchEvent(new window.Event('app-ready'));
+});
diff --git a/dialogger.js b/dialogger.js
new file mode 100644
index 0000000..e641f8b
--- /dev/null
+++ b/dialogger.js
@@ -0,0 +1,830 @@
+var fs = null;
+addEventListener('app-ready', function(e)
+{
+	// We're running inside app.js
+	fs = require('fs');
+	$('#import').hide();
+	$('#export').hide();
+	$('#export-game').hide();
+});
+
+var graph = new joint.dia.Graph();
+
+var defaultLink = new joint.dia.Link(
+{
+	attrs:
+	{
+		'.marker-target': { d: 'M 10 0 L 0 5 L 10 10 z', },
+		'.link-tools .tool-remove circle, .marker-vertex': { r: 8 },
+	},
+});
+defaultLink.set('smooth', true);
+
+var allowableConnections =
+[
+	['dialogue.Text', 'dialogue.Text'],
+	['dialogue.Text', 'dialogue.Node'],
+	['dialogue.Text', 'dialogue.Choice'],
+	['dialogue.Text', 'dialogue.Set'],
+	['dialogue.Text', 'dialogue.Branch'],
+	['dialogue.Node', 'dialogue.Text'],
+	['dialogue.Node', 'dialogue.Node'],
+	['dialogue.Node', 'dialogue.Choice'],
+	['dialogue.Node', 'dialogue.Set'],
+	['dialogue.Node', 'dialogue.Branch'],
+	['dialogue.Choice', 'dialogue.Text'],
+	['dialogue.Choice', 'dialogue.Node'],
+	['dialogue.Choice', 'dialogue.Set'],
+	['dialogue.Choice', 'dialogue.Branch'],
+	['dialogue.Set', 'dialogue.Text'],
+	['dialogue.Set', 'dialogue.Node'],
+	['dialogue.Set', 'dialogue.Set'],
+	['dialogue.Set', 'dialogue.Branch'],
+	['dialogue.Branch', 'dialogue.Text'],
+	['dialogue.Branch', 'dialogue.Node'],
+	['dialogue.Branch', 'dialogue.Set'],
+	['dialogue.Branch', 'dialogue.Branch'],
+];
+
+function validateConnection(cellViewS, magnetS, cellViewT, magnetT, end, linkView)
+{
+	// Prevent loop linking
+	if (magnetS == magnetT)
+		return false;
+
+	if (cellViewS == cellViewT)
+		return false;
+
+	if (magnetT.attributes.magnet.nodeValue !== 'passive') // Can't connect to an output port
+		return false;
+
+	var sourceType = cellViewS.model.attributes.type;
+	var targetType = cellViewT.model.attributes.type;
+	var valid = false;
+	for (var i = 0; i < allowableConnections.length; i++)
+	{
+		var rule = allowableConnections[i];
+		if (sourceType == rule[0] && targetType == rule[1])
+		{
+			valid = true;
+			break;
+		}
+	}
+	if (!valid)
+		return false;
+
+	var links = graph.getConnectedLinks(cellViewS.model);
+	for (var i = 0; i < links.length; i++)
+	{
+		var link = links[i];
+		if (link.attributes.source.id === cellViewS.model.id && link.attributes.source.port === magnetS.attributes.port.nodeValue && link.attributes.target.id)
+		{
+			var targetCell = graph.getCell(link.attributes.target.id);
+			if (targetCell.attributes.type !== targetType)
+				return false; // We can only connect to multiple targets of the same type
+			if (targetCell == cellViewT.model)
+				return false; // Already connected
+		} 
+	}
+
+	return true;
+}
+
+function validateMagnet(cellView, magnet)
+{
+	if (magnet.getAttribute('magnet') === 'passive')
+		return false;
+
+	// If unlimited connections attribute is null, we can only ever connect to one object
+	// If it is not null, it is an array of type strings which are allowed to have unlimited connections
+	var unlimitedConnections = magnet.getAttribute('unlimitedConnections');
+	var links = graph.getConnectedLinks(cellView.model);
+	for (var i = 0; i < links.length; i++)
+	{
+		var link = links[i];
+		if (link.attributes.source.id === cellView.model.id && link.attributes.source.port === magnet.attributes.port.nodeValue)
+		{
+			// This port already has a connection
+			if (unlimitedConnections && link.attributes.target.id)
+			{
+				var targetCell = graph.getCell(link.attributes.target.id);
+				if (unlimitedConnections.indexOf(targetCell.attributes.type) !== -1)
+					return true; // It's okay because this target type has unlimited connections
+			} 
+			return false;
+		}
+	}
+
+	return true;
+}
+
+joint.shapes.dialogue = {};
+joint.shapes.dialogue.Base = joint.shapes.devs.Model.extend(
+{
+	defaults: joint.util.deepSupplement
+	(
+		{
+			type: 'dialogue.Base',
+			size: { width: 200, height: 64 },
+			name: '',
+			attrs:
+			{
+				rect: { stroke: 'none', 'fill-opacity': 0 },
+				text: { display: 'none' },
+				'.inPorts circle': { magnet: 'passive' },
+				'.outPorts circle': { magnet: true, },
+			},
+		},
+		joint.shapes.devs.Model.prototype.defaults
+	),
+});
+
+joint.shapes.dialogue.BaseView = joint.shapes.devs.ModelView.extend(
+{
+	template:
+	[
+		'<div class="node">',
+		'<span class="label"></span>',
+		'<button class="delete">x</button>',
+		'<input type="text" class="name" placeholder="Text" />',
+		'</div>',
+	].join(''),
+
+	initialize: function()
+	{
+		_.bindAll(this, 'updateBox');
+		joint.shapes.devs.ModelView.prototype.initialize.apply(this, arguments);
+
+		this.$box = $(_.template(this.template)());
+		// Prevent paper from handling pointerdown.
+		this.$box.find('input').on('mousedown click', function(evt) { evt.stopPropagation(); });
+
+		// This is an example of reacting on the input change and storing the input data in the cell model.
+		this.$box.find('input.name').on('change', _.bind(function(evt)
+		{
+			this.model.set('name', $(evt.target).val());
+		}, this));
+
+		this.$box.find('.delete').on('click', _.bind(this.model.remove, this.model));
+		// Update the box position whenever the underlying model changes.
+		this.model.on('change', this.updateBox, this);
+		// Remove the box when the model gets removed from the graph.
+		this.model.on('remove', this.removeBox, this);
+
+		this.updateBox();
+	},
+
+	render: function()
+	{
+		joint.shapes.devs.ModelView.prototype.render.apply(this, arguments);
+		this.paper.$el.prepend(this.$box);
+		this.updateBox();
+		return this;
+	},
+
+	updateBox: function()
+	{
+		// Set the position and dimension of the box so that it covers the JointJS element.
+		var bbox = this.model.getBBox();
+		// Example of updating the HTML with a data stored in the cell model.
+		var nameField = this.$box.find('input.name');
+		if (!nameField.is(':focus'))
+			nameField.val(this.model.get('name'));
+		var label = this.$box.find('.label');
+		var type = this.model.get('type').slice('dialogue.'.length);
+		label.text(type);
+		label.attr('class', 'label ' + type);
+		this.$box.css({ width: bbox.width, height: bbox.height, left: bbox.x, top: bbox.y, transform: 'rotate(' + (this.model.get('angle') || 0) + 'deg)' });
+	},
+
+	removeBox: function(evt)
+	{
+		this.$box.remove();
+	},
+});
+
+joint.shapes.dialogue.Node = joint.shapes.devs.Model.extend(
+{
+	defaults: joint.util.deepSupplement
+	(
+		{
+			type: 'dialogue.Node',
+			inPorts: ['input'],
+			outPorts: ['output'],
+			attrs:
+			{
+				'.outPorts circle': { unlimitedConnections: ['dialogue.Choice'], }
+			},
+		},
+		joint.shapes.dialogue.Base.prototype.defaults
+	),
+});
+joint.shapes.dialogue.NodeView = joint.shapes.dialogue.BaseView;
+
+joint.shapes.dialogue.Text = joint.shapes.devs.Model.extend(
+{
+	defaults: joint.util.deepSupplement
+	(
+		{
+			type: 'dialogue.Text',
+			inPorts: ['input'],
+			outPorts: ['output'],
+			attrs:
+			{
+				'.outPorts circle': { unlimitedConnections: ['dialogue.Choice'], }
+			},
+		},
+		joint.shapes.dialogue.Base.prototype.defaults
+	),
+});
+joint.shapes.dialogue.TextView = joint.shapes.dialogue.BaseView;
+
+joint.shapes.dialogue.Choice = joint.shapes.devs.Model.extend(
+{
+	defaults: joint.util.deepSupplement
+	(
+		{
+			type: 'dialogue.Choice',
+			inPorts: ['input'],
+			outPorts: ['output'],
+		},
+		joint.shapes.dialogue.Base.prototype.defaults
+	),
+});
+joint.shapes.dialogue.ChoiceView = joint.shapes.dialogue.BaseView;
+
+joint.shapes.dialogue.Branch = joint.shapes.devs.Model.extend(
+{
+	defaults: joint.util.deepSupplement
+	(
+		{
+			type: 'dialogue.Branch',
+			size: { width: 200, height: 100, },
+			inPorts: ['input'],
+			outPorts: ['output0'],
+			values: [],
+		},
+		joint.shapes.dialogue.Base.prototype.defaults
+	),
+});
+joint.shapes.dialogue.BranchView = joint.shapes.dialogue.BaseView.extend(
+{
+	template:
+	[
+		'<div class="node">',
+		'<span class="label"></span>',
+		'<button class="delete">x</button>',
+		'<button class="add">+</button>',
+		'<button class="remove">-</button>',
+		'<input type="text" class="name" placeholder="Variable" />',
+		'<input type="text" value="Default" readonly/>',
+		'</div>',
+	].join(''),
+
+	initialize: function()
+	{
+		joint.shapes.dialogue.BaseView.prototype.initialize.apply(this, arguments);
+		this.$box.find('.add').on('click', _.bind(this.addPort, this));
+		this.$box.find('.remove').on('click', _.bind(this.removePort, this));
+	},
+
+	removePort: function()
+	{
+		if (this.model.get('outPorts').length > 1)
+		{
+			var outPorts = this.model.get('outPorts').slice(0);
+			outPorts.pop();
+			this.model.set('outPorts', outPorts);
+			var values = this.model.get('values').slice(0);
+			values.pop();
+			this.model.set('values', values);
+			this.updateSize();
+		}
+	},
+
+	addPort: function()
+	{
+		var outPorts = this.model.get('outPorts').slice(0);
+		outPorts.push('output' + outPorts.length.toString());
+		this.model.set('outPorts', outPorts);
+		var values = this.model.get('values').slice(0);
+		values.push(null);
+		this.model.set('values', values);
+		this.updateSize();
+	},
+
+	updateBox: function()
+	{
+		joint.shapes.dialogue.BaseView.prototype.updateBox.apply(this, arguments);
+		var values = this.model.get('values');
+		var valueFields = this.$box.find('input.value');
+
+		// Add value fields if necessary
+		for (var i = valueFields.length; i < values.length; i++)
+		{
+			// Prevent paper from handling pointerdown.
+			var field = $('<input type="text" class="value" />');
+			field.attr('placeholder', 'Value ' + (i + 1).toString());
+			field.attr('index', i);
+			this.$box.append(field);
+			field.on('mousedown click', function(evt) { evt.stopPropagation(); });
+
+			// This is an example of reacting on the input change and storing the input data in the cell model.
+			field.on('change', _.bind(function(evt)
+			{
+				var values = this.model.get('values').slice(0);
+				values[$(evt.target).attr('index')] = $(evt.target).val();
+				this.model.set('values', values);
+			}, this));
+		}
+
+		// Remove value fields if necessary
+		for (var i = values.length; i < valueFields.length; i++)
+			$(valueFields[i]).remove();
+
+		// Update value fields
+		valueFields = this.$box.find('input.value');
+		for (var i = 0; i < valueFields.length; i++)
+		{
+			var field = $(valueFields[i]);
+			if (!field.is(':focus'))
+				field.val(values[i]);
+		}
+	},
+
+	updateSize: function()
+	{
+		var textField = this.$box.find('input.name');
+		var height = textField.outerHeight(true);
+		this.model.set('size', { width: 200, height: 100 + Math.max(0, (this.model.get('outPorts').length - 1) * height) });
+	},
+});
+
+joint.shapes.dialogue.Set = joint.shapes.devs.Model.extend(
+{
+	defaults: joint.util.deepSupplement
+	(
+		{
+			type: 'dialogue.Set',
+			inPorts: ['input'],
+			outPorts: ['output'],
+			size: { width: 200, height: 100, },
+			value: '',
+		},
+		joint.shapes.dialogue.Base.prototype.defaults
+	),
+});
+
+joint.shapes.dialogue.SetView = joint.shapes.dialogue.BaseView.extend(
+{
+	template:
+	[
+		'<div class="node">',
+		'<span class="label"></span>',
+		'<button class="delete">x</button>',
+		'<input type="text" class="name" placeholder="Variable" />',
+		'<input type="text" class="value" placeholder="Value" />',
+		'</div>',
+	].join(''),
+
+	initialize: function()
+	{
+		joint.shapes.dialogue.BaseView.prototype.initialize.apply(this, arguments);
+		this.$box.find('input.value').on('change', _.bind(function(evt)
+		{
+			this.model.set('value', $(evt.target).val());
+		}, this));
+	},
+
+	updateBox: function()
+	{
+		joint.shapes.dialogue.BaseView.prototype.updateBox.apply(this, arguments);
+		var field = this.$box.find('input.value');
+		if (!field.is(':focus'))
+			field.val(this.model.get('value'));
+	},
+});
+
+function gameData()
+{
+	var cells = graph.toJSON().cells;
+	var nodesByID = {};
+	var cellsByID = {};
+	var nodes = [];
+	for (var i = 0; i < cells.length; i++)
+	{
+		var cell = cells[i];
+		if (cell.type != 'link')
+		{
+			var node =
+			{
+				type: cell.type.slice('dialogue.'.length),
+				id: cell.id,
+			};
+			if (node.type == 'Branch')
+			{
+				node.variable = cell.name;
+				node.branches = {};
+				for (var j = 0; j < cell.values.length; j++)
+				{
+					var branch = cell.values[j];
+					node.branches[branch] = null;
+				}
+			}
+			else if (node.type == 'Set')
+			{
+				node.variable = cell.name;
+				node.value = cell.value;
+				node.next = null;
+			}
+			else
+			{
+				node.name = cell.name;
+				node.next = null;
+			}
+			nodes.push(node);
+			nodesByID[cell.id] = node;
+			cellsByID[cell.id] = cell;
+		}
+	}
+	for (var i = 0; i < cells.length; i++)
+	{
+		var cell = cells[i];
+		if (cell.type == 'link')
+		{
+			var source = nodesByID[cell.source.id];
+			var target = cell.target ? nodesByID[cell.target.id] : null;
+			if (source)
+			{
+				if (source.type == 'Branch')
+				{
+					var portNumber = parseInt(cell.source.port.slice('output'.length));
+					var value;
+					if (portNumber == 0)
+						value = '_default';
+					else
+					{
+						var sourceCell = cellsByID[source.id];
+						value = sourceCell.values[portNumber - 1];
+					}
+					source.branches[value] = target ? target.id : null;
+				}
+				else if ((source.type == 'Text' || source.type == 'Node') && target && target.type == 'Choice')
+				{
+					if (!source.choices)
+					{
+						source.choices = [];
+						delete source.next;
+					}
+					source.choices.push(target.id);
+				}
+				else
+					source.next = target ? target.id : null;
+			}
+		}
+	}
+	return nodes;
+}
+
+// Menu actions
+
+var filename = null;
+var defaultFilename = 'dialogue.dl';
+
+function flash(text)
+{
+	var $flash = $('#flash');
+	$flash.text(text);
+	$flash.stop(true, true);
+	$flash.show();
+	$flash.css('opacity', 1.0);
+	$flash.fadeOut({ duration: 1500 });
+}
+
+function offerDownload(name, data)
+{
+	var a = $('<a>');
+	a.attr('download', name);
+	a.attr('href', 'data:application/json,' + encodeURIComponent(JSON.stringify(data)));
+	a.attr('target', '_blank');
+	a.hide();
+	$('body').append(a);
+	a[0].click();
+	a.remove();
+}
+
+function promptFilename(callback)
+{
+	if (fs)
+	{
+		filename = null;
+		window.frame.openDialog(
+		{
+			type: 'save',
+		}, function(err, files)
+		{
+			if (!err && files.length == 1)
+			{
+				filename = files[0];
+				callback(filename);
+			}
+		});
+	}
+	else
+	{
+		filename = prompt('Filename', defaultFilename);
+		callback(filename);
+	}
+}
+
+function applyTextFields()
+{
+	$('input[type=text]').blur();
+}
+
+function save()
+{
+	applyTextFields();
+	if (!filename)
+		promptFilename(doSave);
+	else
+		doSave();
+}
+
+function doSave()
+{
+	if (filename)
+	{
+		if (fs)
+		{
+			fs.writeFileSync(filename, JSON.stringify(graph), 'utf8');
+			fs.writeFileSync(gameFilenameFromNormalFilename(filename), JSON.stringify(gameData()), 'utf8');
+		}
+		else
+		{
+			if (!localStorage[filename])
+				addFileEntry(filename);
+			localStorage[filename] = JSON.stringify(graph);
+		}
+		flash('Saved ' + filename);
+	}
+}
+
+function load()
+{
+	if (fs)
+	{
+		window.frame.openDialog(
+		{
+			type: 'open',
+			multiSelect: false,
+		}, function(err, files)
+		{
+			if (!err && files.length == 1)
+			{
+				graph.clear();
+				filename = files[0];
+				graph.fromJSON(JSON.parse(fs.readFileSync(filename, 'utf8')));
+			}
+		});
+	}
+	else
+		$('#menu').show();
+}
+
+function exportFile()
+{
+	if (!fs)
+	{
+		applyTextFields();
+		offerDownload(filename ? filename : defaultFilename, graph);
+	}
+}
+
+function gameFilenameFromNormalFilename(f)
+{
+	return f.substring(0, f.length - 2) + 'dlz';
+}
+
+function exportGameFile()
+{
+	if (!fs)
+	{
+		applyTextFields();
+		offerDownload(gameFilenameFromNormalFilename(filename ? filename : defaultFilename), gameData());
+	}
+}
+
+function importFile()
+{
+	if (!fs)
+		$('#file').click();
+}
+
+function add(constructor)
+{
+	return function()
+	{
+		var position = $('#cmroot').position();
+		var container = $('#container')[0];
+		var element = new constructor(
+		{
+			position: { x: position.left + container.scrollLeft, y: position.top + container.scrollTop },
+		});
+		graph.addCells([element]);
+	};
+}
+
+function clear()
+{
+	graph.clear();
+	filename = null;
+}
+
+// Browser stuff
+
+var paper = new joint.dia.Paper(
+{
+	el: $('#paper'),
+	width: 16000,
+	height: 8000,
+	model: graph,
+	gridSize: 1,
+	defaultLink: defaultLink,
+	validateConnection: validateConnection,
+	validateMagnet: validateMagnet,
+	// Enable link snapping within 75px lookup radius
+	snapLinks: { radius: 75 }
+});
+
+var panning = false;
+var mousePosition = { x: 0, y: 0 };
+paper.on('blank:pointerdown', function(e, x, y)
+{
+	panning = true;
+	mousePosition.x = e.pageX;
+	mousePosition.y = e.pageY;
+	$('body').css('cursor', 'move');
+	applyTextFields();
+});
+paper.on('cell:pointerdown', function(e, x, y)
+{
+	applyTextFields();
+});
+
+$('#container').mousemove(function(e)
+{
+	if (panning)
+	{
+		var $this = $(this);
+		$this.scrollLeft($this.scrollLeft() + mousePosition.x - e.pageX);
+		$this.scrollTop($this.scrollTop() + mousePosition.y - e.pageY);
+		mousePosition.x = e.pageX;
+		mousePosition.y = e.pageY;
+	}
+});
+
+$('#container').mouseup(function (e)
+{
+	panning = false;
+	$('body').css('cursor', 'default');
+});
+
+function handleFiles(files)
+{
+	filename = files[0].name;
+	var fileReader = new FileReader();
+	fileReader.onload = function(e)
+	{
+		graph.clear();
+		graph.fromJSON(JSON.parse(e.target.result));
+	};
+	fileReader.readAsText(files[0]);
+}
+
+$('#file').on('change', function()
+{
+	handleFiles(this.files);
+});
+
+$('body').on('dragenter', function(e)
+{
+	e.stopPropagation();
+	e.preventDefault();
+});
+
+$('body').on('dragexit', function(e)
+{
+	e.stopPropagation();
+	e.preventDefault();
+});
+
+$('body').on('dragover', function(e)
+{
+	e.stopPropagation();
+	e.preventDefault();
+});
+
+$('body').on('drop', function(e)
+{
+	e.stopPropagation();
+	e.preventDefault();
+	handleFiles(e.originalEvent.dataTransfer.files);
+});
+
+$(window).on('keydown', function(event)
+{
+	// Catch Ctrl-S or key code 19 on Mac (Cmd-S)
+	if (((event.ctrlKey || event.metaKey) && String.fromCharCode(event.which).toLowerCase() == 's') || event.which == 19)
+	{
+		event.stopPropagation();
+		event.preventDefault();
+		save();
+		return false;
+	}
+	else if ((event.ctrlKey || event.metaKey) && String.fromCharCode(event.which).toLowerCase() == 'o')
+	{
+		event.stopPropagation();
+		event.preventDefault();
+		load();
+		return false;
+	}
+	else if ((event.ctrlKey || event.metaKey) && String.fromCharCode(event.which).toLowerCase() == 'e')
+	{
+		event.stopPropagation();
+		event.preventDefault();
+		exportFile();
+		return false;
+	}
+	return true;
+});
+
+$(window).resize(function()
+{
+	applyTextFields();
+	var $window = $(window);
+	var $container = $('#container');
+		$container.height($window.innerHeight());
+		$container.width($window.innerWidth());
+		var $menu = $('#menu');
+		$menu.css('top', Math.max(0, (($window.height() - $menu.outerHeight()) / 2)) + 'px');
+		$menu.css('left', Math.max(0, (($window.width() - $menu.outerWidth()) / 2)) + 'px');
+		return this;
+});
+
+function addFileEntry(name)
+{
+	var entry = $('<div>');
+	entry.text(name);
+	var deleteButton = $('<button class="delete">-</button>');
+	entry.append(deleteButton);
+	$('#menu').append(entry);
+
+	deleteButton.on('click', function(event)
+	{
+		localStorage.removeItem(name);
+		entry.remove();
+		event.stopPropagation();
+	});
+
+	entry.on('click', function(event)
+	{
+		graph.clear();
+		graph.fromJSON(JSON.parse(localStorage[name]));
+		filename = name;
+		$('#menu').hide();
+	});
+}
+
+(function()
+{
+	for (var i = 0; i < localStorage.length; i++)
+		addFileEntry(localStorage.key(i));
+})();
+
+$('#menu button.close').click(function()
+{
+	$('#menu').hide();
+});
+
+$(window).trigger('resize');
+
+$('#paper').contextmenu(
+{
+	width: 150,
+	items:
+	[
+		{ text: 'Text', alias: '1-1', action: add(joint.shapes.dialogue.Text) },
+		{ text: 'Choice', alias: '1-2', action: add(joint.shapes.dialogue.Choice) },
+		{ text: 'Branch', alias: '1-3', action: add(joint.shapes.dialogue.Branch) },
+		{ text: 'Set', alias: '1-4', action: add(joint.shapes.dialogue.Set) },
+		{ text: 'Node', alias: '1-5', action: add(joint.shapes.dialogue.Node) },
+		{ type: 'splitLine' },
+		{ text: 'Save', alias: '2-1', action: save },
+		{ text: 'Load', alias: '2-2', action: load },
+		{ text: 'Import', id: 'import', alias: '2-3', action: importFile },
+		{ text: 'New', alias: '2-4', action: clear },
+		{ text: 'Export', id: 'export', alias: '2-5', action: exportFile },
+		{ text: 'Export game file', id: 'export-game', alias: '2-6', action: exportGameFile },
+	]
+});
diff --git a/g/grid.png b/g/grid.png
new file mode 100644
index 0000000..48a65a3
Binary files /dev/null and b/g/grid.png differ
diff --git a/index.css b/index.css
new file mode 100644
index 0000000..1c461c0
--- /dev/null
+++ b/index.css
@@ -0,0 +1,266 @@
+html, body 
+{
+	padding: 0px;
+	color: #fff;
+	margin: 0px;
+	font-family: sans-serif;
+	font-size: small;
+	background: #7d8ea2; /* Old browsers */
+	background: -moz-linear-gradient(top, #7d8ea2 0%, #121413 100%); /* FF3.6+ */
+	background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#7d8ea2), color-stop(100%,#121413)); /* Chrome,Safari4+ */
+	background: -webkit-linear-gradient(top, #7d8ea2 0%,#121413 100%); /* Chrome10+,Safari5.1+ */
+	background: -o-linear-gradient(top, #7d8ea2 0%,#121413 100%); /* Opera 11.10+ */
+	background: -ms-linear-gradient(top, #7d8ea2 0%,#121413 100%); /* IE10+ */
+	background: linear-gradient(to bottom, #7d8ea2 0%,#121413 100%); /* W3C */
+	filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#7d8ea2', endColorstr='#121413',GradientType=0 ); /* IE6-9 */
+	overflow: hidden;
+}
+
+#container
+{
+	overflow: scroll;
+}
+
+#paper
+{
+	position: relative;
+	display: inline-block;
+	background: transparent;
+	background-image: url(g/grid.png);
+}
+
+#paper svg
+{
+	background: transparent;
+}
+
+#paper svg .link
+{
+	z-index: 2;
+}
+
+#menu
+{
+	position: absolute;
+	display: none;
+	width: 40%;
+	z-index: 10000;
+	padding: 8px;
+	cursor: pointer;
+}
+
+#menu div
+{
+	clear: right;
+	padding: 4px;
+	margin-left: 20px;
+	margin-right: 20px;
+	border-bottom: 1px solid #ccc;
+}
+
+#menu div:hover
+{
+	background-color: black;
+}
+
+#flash
+{
+	position: absolute;
+	top: 10px;
+	left: 10px;
+	padding: 8px;
+	font-weight: bold;
+	display: none;
+}
+
+/*
+Editor tools
+*/
+.marker-target
+{
+	fill: #fff;
+	stroke-width: 0;
+}
+
+.marker-vertex
+{
+   fill: #fff;
+}
+
+.marker-vertex:hover
+{
+   fill: #000;
+   stroke: none;
+}
+
+.marker-arrowhead
+{
+   fill: #fff;
+   stroke: none;
+}
+
+.marker-arrowhead:hover
+{
+   fill: #000;
+}
+
+.link-tools .tool-remove circle
+{
+   fill: #c0392b;
+}
+
+.connection
+{
+	stroke: #fff;
+}
+
+.inPorts circle
+{
+	fill: #c0392b;
+	stroke-width: 0;
+}
+
+.outPorts circle
+{
+	fill: #8c6;
+	stroke-width: 0;
+}
+
+/*
+Node styles
+*/
+
+.node
+{
+	position: absolute;
+	background: #666;
+	/* Make sure events are propagated to the JointJS element so, e.g. dragging works.*/
+	pointer-events: none;
+	-webkit-user-select: none;
+	padding: 8px;
+	box-sizing: border-box;
+	z-index: 2;
+}
+
+.node input, button
+{
+	/* Enable interacting with inputs only. */
+	pointer-events: auto;	
+	border: none;
+	box-sizing: border-box;
+	background-color: #456;
+	color: #fff;
+}
+
+.node .label
+{
+	color: #ddd;
+}
+
+.node .label.Text
+{
+	color: #8c6;
+}
+
+.node .label.Set
+{
+	color: #acf;
+}
+
+.node .label.Choice
+{
+	color: #dc5;
+}
+
+.node .label.Branch
+{
+	color: #ea6;
+}
+
+button
+{
+	float: right;
+	border: none;
+	border-radius: 8px;
+	font-weight: bold;
+	width: 16px;
+	height: 16px;
+	line-height: 0px;
+	text-align: middle;
+	padding: 0;
+	margin: 0;
+	cursor: pointer;
+}
+
+button.delete:hover
+{
+	background-color: #c0392b;
+}
+
+.node button.add:hover
+{
+	background-color: #8c6;
+}
+
+.node button.remove:hover
+{
+	background-color: #dc5;
+}
+
+.node input
+{
+	width: 100%;
+	padding: 4px;
+	margin-top: 8px;
+}
+
+.node
+{
+	color: #fff;
+}
+
+/*
+Context menu
+*/
+.b-m-mpanel, #menu, #flash
+{
+	background-color: #444;
+	position: absolute;
+	z-index: 99997;
+	-moz-box-shadow: 0px 0px 16px 0px rgba(0, 0, 0, 0.5);
+	-webkit-box-shadow: 0px 0px 16px 0px rgba(0, 0, 0, 0.5);
+	box-shadow: 0px 0px 16px 0px rgba(0, 0, 0, 0.5);
+}
+
+.b-m-split
+{
+	font-size: 0px;
+	margin: 2px;
+	border-bottom: 1px solid #777;
+}
+
+.b-m-item, .b-m-ifocus
+{
+    padding: 8px;
+    line-height: 100%;
+}
+
+span
+{
+    -moz-user-select: none;
+    -webkit-user-select: none;
+    -ms-user-select: none;
+    user-select: none;
+    cursor: default;
+}
+
+.b-m-ibody
+{
+	overflow: hidden;
+	text-overflow: ellipsis;
+}
+
+.b-m-ifocus
+{
+    background-color: #000;
+}
diff --git a/index.html b/index.html
new file mode 100644
index 0000000..00a93b0
--- /dev/null
+++ b/index.html
@@ -0,0 +1,22 @@
+<!doctype html>
+<html>
+	<head>
+		<title>Dialogger</title>
+		<link rel="stylesheet" href="lib/joint.css" />
+		<link rel="stylesheet" href="index.css" />
+		<script src="lib/joint.js"></script>
+		<script src="lib/jquery.contextmenu.js"></script>
+		<script src="lib/joint.shapes.devs.js"></script>
+	</head>
+	<body>
+		<input type="file" id="file" accept=".dl" style="display: none;" />
+		<div id="flash"></div>
+		<div id="menu">
+			<button class="delete close">x</button>
+		</div>
+		<div id="container">
+			<div id="paper"></div>
+		</div>
+		<script src="dialogger.js"></script>
+	</body>
+</html>
\ No newline at end of file
diff --git a/lib/joint.css b/lib/joint.css
new file mode 100644
index 0000000..09834b7
--- /dev/null
+++ b/lib/joint.css
@@ -0,0 +1,239 @@
+/*! JointJS v0.8.1 - JavaScript diagramming library  2014-02-24 
+
+
+This Source Code Form is subject to the terms of the Mozilla Public
+License, v. 2.0. If a copy of the MPL was not distributed with this
+file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+
+/*
+A complete list of SVG properties that can be set through CSS is here:
+http://www.w3.org/TR/SVG/styling.html
+
+Important note: Presentation attributes have a lower precedence over CSS style rules.
+*/
+
+
+/* .viewport is a <g> node wrapping all diagram elements in the paper */
+.viewport {
+   -webkit-user-select: none;
+   -moz-user-select: none;
+   user-select: none;
+}
+
+/* .magnet is an element that can be either source or a target of a link */
+/*
+.magnet {
+   fill: black;
+   fill-opacity: 0;
+   stroke: black;
+   stroke-width: 15;
+   stroke-opacity: 0;
+   pointer-events: visibleStroke;
+   cursor: crosshair;
+   vector-effect: non-scaling-stroke;
+}
+
+.magnet:hover {
+   stroke-opacity: .5;
+}
+*/
+
+[magnet=true]:not(.element) {
+   cursor: crosshair;
+}
+[magnet=true]:not(.element):hover {
+   opacity: .7;
+}
+
+/*
+
+Elements have CSS classes named by their types. E.g. type: basic.Rect has a CSS class "element basic Rect".
+This makes it possible to easilly style elements in CSS and have generic CSS rules applying to
+the whole group of elements. Each plugin can provide its own stylesheet.
+
+*/
+
+.element {
+   /* Give the user a hint that he can drag&drop the element. */
+   cursor: move;
+}
+
+.element * {
+   /* The default behavior when scaling an element is not to scale the stroke in order to prevent the ugly effect of stroke with different proportions. */
+   vector-effect: non-scaling-stroke;
+   -moz-user-select: none;
+   user-drag: none;
+}
+
+
+/* 
+
+connection-wrap is a <path> element of the joint.dia.Link that follows the .connection <path> of that link.
+In other words, the `d` attribute of the .connection-wrap contains the same data as the `d` attribute of the
+.connection <path>. The advantage of using .connection-wrap is to be able to catch pointer events
+in the neighborhood of the .connection <path>. This is especially handy if the .connection <path> is 
+very thin.
+
+*/
+
+.connection-wrap {
+   fill: none;
+   stroke: black;
+   stroke-width: 15;
+   stroke-linecap: round;
+   stroke-linejoin: round;
+   opacity: 0;
+   cursor: move;
+}
+.connection-wrap:hover {
+   opacity: .4;
+   stroke-opacity: .4;
+}
+
+
+.connection {
+   /* stroke: black; */
+   /* stroke width cannot be overriden by attribute? */
+   /*   stroke-width: 1; */
+   fill: none;
+   stroke-linejoin: round;
+}
+
+.marker-source, .marker-target {
+/* Cannot be in CSS otherwise it could not be overruled by attributes.
+   fill: black;
+   stroke: black;
+*/
+   /* This makes the arrowheads point to the border of objects even though the transform: scale() is applied on them. */
+   vector-effect: non-scaling-stroke;
+}
+
+/* 
+
+Vertex markers are `<circle>` elements that appear at connection vertex positions.
+
+*/
+
+/* <g> element wrapping .marker-vertex-group. */
+.marker-vertices {
+   opacity: 0;
+   cursor: move;
+}
+.marker-arrowheads {
+   opacity: 0;
+   cursor: move;
+   cursor: -webkit-grab;
+   cursor: -moz-grab;
+/*   display: none;   */   /* setting `display: none` on .marker-arrowheads effectivelly switches of links reconnecting */
+}
+.link-tools {
+   opacity: 0;
+   cursor: pointer;
+}
+.link-tools .tool-options {
+   display: none;       /* by default, we don't display link options tool */
+}
+.link-tools .tool-remove circle {
+   fill: red;
+}
+.link-tools .tool-remove path {
+   fill: white;
+}
+.link:hover .marker-vertices,
+.link:hover .marker-arrowheads,
+.link:hover .link-tools {
+   opacity: 1;
+}
+
+/* <circle> element inside .marker-vertex-group <g> element */
+.marker-vertex {
+   fill: #1ABC9C;
+}
+.marker-vertex:hover {
+   fill: #34495E;
+   stroke: none;
+}
+
+.marker-arrowhead {
+   fill: #1ABC9C;
+}
+.marker-arrowhead:hover {
+   fill: #F39C12;
+   stroke: none;
+}
+
+/* <circle> element used to remove a vertex */
+.marker-vertex-remove {
+   cursor: pointer;
+   opacity: .1;
+   fill: white;
+}
+
+.marker-vertex-group:hover .marker-vertex-remove {
+   opacity: 1;
+}
+
+.marker-vertex-remove-area {
+   opacity: .1;
+   cursor: pointer;
+}
+.marker-vertex-group:hover .marker-vertex-remove-area {
+   opacity: 1;
+}
+
+/*
+
+/* Cell highlighting - e.g a cell underneath the dragged link get highlighted.
+   See joint.dia.cell.js highlight(); */
+
+/* For some reason, CSS `outline` property does not work on `<text>` elements. */
+text.highlighted {
+    fill: #FF0000;
+}
+
+.highlighted {
+    outline: 2px solid #FF0000; /* `outline` doesn't work in Firefox, Opera and IE9+ correctly. */
+    opacity: 0.7 \9; /* It targets only IE9. */
+}
+
+/*
+use '@-moz-document url-prefix()' to target all versions if Firefox and nothing else.
+See `https://developer.mozilla.org/en-US/docs/Web/CSS/@document`.
+*/
+@-moz-document url-prefix() {
+    .highlighted { opacity: 0.7; } /* only for FF */
+}
+
+/*
+`-o-prefocus` is a pseudo-class that allows styles to be targeted for Opera only.
+See `http://www.opera.com/docs/specs/presto2.12/css/o-vendor/`.
+*/
+doesnotexist:-o-prefocus, .highlighted {
+    opacity: 0.7;
+}
+
+/*
+
+Example of custom changes (in pure CSS only!):
+
+Do not show marker vertices at all:  .marker-vertices { display: none; }
+Do not allow adding new vertices: .connection-wrap { pointer-events: none; }
+
+*/
+
+/* foreignObject in joint.shapes.basic.TextBlock */
+.TextBlock .fobj body {
+    background-color: transparent;
+    margin: 0px;
+}
+.TextBlock .fobj div {
+    text-align: center;
+    vertical-align: middle;
+    display: table-cell;
+    padding: 0px 5px 0px 5px;
+}
\ No newline at end of file
diff --git a/lib/joint.js b/lib/joint.js
new file mode 100644
index 0000000..5461592
--- /dev/null
+++ b/lib/joint.js
@@ -0,0 +1,22070 @@
+/*! JointJS v0.8.1 - JavaScript diagramming library  2014-02-24 
+
+
+This Source Code Form is subject to the terms of the Mozilla Public
+License, v. 2.0. If a copy of the MPL was not distributed with this
+file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+/*!
+ * jQuery JavaScript Library v2.0.3
+ * http://jquery.com/
+ *
+ * Includes Sizzle.js
+ * http://sizzlejs.com/
+ *
+ * Copyright 2005, 2013 jQuery Foundation, Inc. and other contributors
+ * Released under the MIT license
+ * http://jquery.org/license
+ *
+ * Date: 2013-07-03T13:30Z
+ */
+(function( window, undefined ) {
+
+// Can't do this because several apps including ASP.NET trace
+// the stack via arguments.caller.callee and Firefox dies if
+// you try to trace through "use strict" call chains. (#13335)
+// Support: Firefox 18+
+//"use strict";
+var
+	// A central reference to the root jQuery(document)
+	rootjQuery,
+
+	// The deferred used on DOM ready
+	readyList,
+
+	// Support: IE9
+	// For `typeof xmlNode.method` instead of `xmlNode.method !== undefined`
+	core_strundefined = typeof undefined,
+
+	// Use the correct document accordingly with window argument (sandbox)
+	location = window.location,
+	document = window.document,
+	docElem = document.documentElement,
+
+	// Map over jQuery in case of overwrite
+	_jQuery = window.jQuery,
+
+	// Map over the $ in case of overwrite
+	_$ = window.$,
+
+	// [[Class]] -> type pairs
+	class2type = {},
+
+	// List of deleted data cache ids, so we can reuse them
+	core_deletedIds = [],
+
+	core_version = "2.0.3",
+
+	// Save a reference to some core methods
+	core_concat = core_deletedIds.concat,
+	core_push = core_deletedIds.push,
+	core_slice = core_deletedIds.slice,
+	core_indexOf = core_deletedIds.indexOf,
+	core_toString = class2type.toString,
+	core_hasOwn = class2type.hasOwnProperty,
+	core_trim = core_version.trim,
+
+	// Define a local copy of jQuery
+	jQuery = function( selector, context ) {
+		// The jQuery object is actually just the init constructor 'enhanced'
+		return new jQuery.fn.init( selector, context, rootjQuery );
+	},
+
+	// Used for matching numbers
+	core_pnum = /[+-]?(?:\d*\.|)\d+(?:[eE][+-]?\d+|)/.source,
+
+	// Used for splitting on whitespace
+	core_rnotwhite = /\S+/g,
+
+	// A simple way to check for HTML strings
+	// Prioritize #id over <tag> to avoid XSS via location.hash (#9521)
+	// Strict HTML recognition (#11290: must start with <)
+	rquickExpr = /^(?:\s*(<[\w\W]+>)[^>]*|#([\w-]*))$/,
+
+	// Match a standalone tag
+	rsingleTag = /^<(\w+)\s*\/?>(?:<\/\1>|)$/,
+
+	// Matches dashed string for camelizing
+	rmsPrefix = /^-ms-/,
+	rdashAlpha = /-([\da-z])/gi,
+
+	// Used by jQuery.camelCase as callback to replace()
+	fcamelCase = function( all, letter ) {
+		return letter.toUpperCase();
+	},
+
+	// The ready event handler and self cleanup method
+	completed = function() {
+		document.removeEventListener( "DOMContentLoaded", completed, false );
+		window.removeEventListener( "load", completed, false );
+		jQuery.ready();
+	};
+
+jQuery.fn = jQuery.prototype = {
+	// The current version of jQuery being used
+	jquery: core_version,
+
+	constructor: jQuery,
+	init: function( selector, context, rootjQuery ) {
+		var match, elem;
+
+		// HANDLE: $(""), $(null), $(undefined), $(false)
+		if ( !selector ) {
+			return this;
+		}
+
+		// Handle HTML strings
+		if ( typeof selector === "string" ) {
+			if ( selector.charAt(0) === "<" && selector.charAt( selector.length - 1 ) === ">" && selector.length >= 3 ) {
+				// Assume that strings that start and end with <> are HTML and skip the regex check
+				match = [ null, selector, null ];
+
+			} else {
+				match = rquickExpr.exec( selector );
+			}
+
+			// Match html or make sure no context is specified for #id
+			if ( match && (match[1] || !context) ) {
+
+				// HANDLE: $(html) -> $(array)
+				if ( match[1] ) {
+					context = context instanceof jQuery ? context[0] : context;
+
+					// scripts is true for back-compat
+					jQuery.merge( this, jQuery.parseHTML(
+						match[1],
+						context && context.nodeType ? context.ownerDocument || context : document,
+						true
+					) );
+
+					// HANDLE: $(html, props)
+					if ( rsingleTag.test( match[1] ) && jQuery.isPlainObject( context ) ) {
+						for ( match in context ) {
+							// Properties of context are called as methods if possible
+							if ( jQuery.isFunction( this[ match ] ) ) {
+								this[ match ]( context[ match ] );
+
+							// ...and otherwise set as attributes
+							} else {
+								this.attr( match, context[ match ] );
+							}
+						}
+					}
+
+					return this;
+
+				// HANDLE: $(#id)
+				} else {
+					elem = document.getElementById( match[2] );
+
+					// Check parentNode to catch when Blackberry 4.6 returns
+					// nodes that are no longer in the document #6963
+					if ( elem && elem.parentNode ) {
+						// Inject the element directly into the jQuery object
+						this.length = 1;
+						this[0] = elem;
+					}
+
+					this.context = document;
+					this.selector = selector;
+					return this;
+				}
+
+			// HANDLE: $(expr, $(...))
+			} else if ( !context || context.jquery ) {
+				return ( context || rootjQuery ).find( selector );
+
+			// HANDLE: $(expr, context)
+			// (which is just equivalent to: $(context).find(expr)
+			} else {
+				return this.constructor( context ).find( selector );
+			}
+
+		// HANDLE: $(DOMElement)
+		} else if ( selector.nodeType ) {
+			this.context = this[0] = selector;
+			this.length = 1;
+			return this;
+
+		// HANDLE: $(function)
+		// Shortcut for document ready
+		} else if ( jQuery.isFunction( selector ) ) {
+			return rootjQuery.ready( selector );
+		}
+
+		if ( selector.selector !== undefined ) {
+			this.selector = selector.selector;
+			this.context = selector.context;
+		}
+
+		return jQuery.makeArray( selector, this );
+	},
+
+	// Start with an empty selector
+	selector: "",
+
+	// The default length of a jQuery object is 0
+	length: 0,
+
+	toArray: function() {
+		return core_slice.call( this );
+	},
+
+	// Get the Nth element in the matched element set OR
+	// Get the whole matched element set as a clean array
+	get: function( num ) {
+		return num == null ?
+
+			// Return a 'clean' array
+			this.toArray() :
+
+			// Return just the object
+			( num < 0 ? this[ this.length + num ] : this[ num ] );
+	},
+
+	// Take an array of elements and push it onto the stack
+	// (returning the new matched element set)
+	pushStack: function( elems ) {
+
+		// Build a new jQuery matched element set
+		var ret = jQuery.merge( this.constructor(), elems );
+
+		// Add the old object onto the stack (as a reference)
+		ret.prevObject = this;
+		ret.context = this.context;
+
+		// Return the newly-formed element set
+		return ret;
+	},
+
+	// Execute a callback for every element in the matched set.
+	// (You can seed the arguments with an array of args, but this is
+	// only used internally.)
+	each: function( callback, args ) {
+		return jQuery.each( this, callback, args );
+	},
+
+	ready: function( fn ) {
+		// Add the callback
+		jQuery.ready.promise().done( fn );
+
+		return this;
+	},
+
+	slice: function() {
+		return this.pushStack( core_slice.apply( this, arguments ) );
+	},
+
+	first: function() {
+		return this.eq( 0 );
+	},
+
+	last: function() {
+		return this.eq( -1 );
+	},
+
+	eq: function( i ) {
+		var len = this.length,
+			j = +i + ( i < 0 ? len : 0 );
+		return this.pushStack( j >= 0 && j < len ? [ this[j] ] : [] );
+	},
+
+	map: function( callback ) {
+		return this.pushStack( jQuery.map(this, function( elem, i ) {
+			return callback.call( elem, i, elem );
+		}));
+	},
+
+	end: function() {
+		return this.prevObject || this.constructor(null);
+	},
+
+	// For internal use only.
+	// Behaves like an Array's method, not like a jQuery method.
+	push: core_push,
+	sort: [].sort,
+	splice: [].splice
+};
+
+// Give the init function the jQuery prototype for later instantiation
+jQuery.fn.init.prototype = jQuery.fn;
+
+jQuery.extend = jQuery.fn.extend = function() {
+	var options, name, src, copy, copyIsArray, clone,
+		target = arguments[0] || {},
+		i = 1,
+		length = arguments.length,
+		deep = false;
+
+	// Handle a deep copy situation
+	if ( typeof target === "boolean" ) {
+		deep = target;
+		target = arguments[1] || {};
+		// skip the boolean and the target
+		i = 2;
+	}
+
+	// Handle case when target is a string or something (possible in deep copy)
+	if ( typeof target !== "object" && !jQuery.isFunction(target) ) {
+		target = {};
+	}
+
+	// extend jQuery itself if only one argument is passed
+	if ( length === i ) {
+		target = this;
+		--i;
+	}
+
+	for ( ; i < length; i++ ) {
+		// Only deal with non-null/undefined values
+		if ( (options = arguments[ i ]) != null ) {
+			// Extend the base object
+			for ( name in options ) {
+				src = target[ name ];
+				copy = options[ name ];
+
+				// Prevent never-ending loop
+				if ( target === copy ) {
+					continue;
+				}
+
+				// Recurse if we're merging plain objects or arrays
+				if ( deep && copy && ( jQuery.isPlainObject(copy) || (copyIsArray = jQuery.isArray(copy)) ) ) {
+					if ( copyIsArray ) {
+						copyIsArray = false;
+						clone = src && jQuery.isArray(src) ? src : [];
+
+					} else {
+						clone = src && jQuery.isPlainObject(src) ? src : {};
+					}
+
+					// Never move original objects, clone them
+					target[ name ] = jQuery.extend( deep, clone, copy );
+
+				// Don't bring in undefined values
+				} else if ( copy !== undefined ) {
+					target[ name ] = copy;
+				}
+			}
+		}
+	}
+
+	// Return the modified object
+	return target;
+};
+
+jQuery.extend({
+	// Unique for each copy of jQuery on the page
+	expando: "jQuery" + ( core_version + Math.random() ).replace( /\D/g, "" ),
+
+	noConflict: function( deep ) {
+		if ( window.$ === jQuery ) {
+			window.$ = _$;
+		}
+
+		if ( deep && window.jQuery === jQuery ) {
+			window.jQuery = _jQuery;
+		}
+
+		return jQuery;
+	},
+
+	// Is the DOM ready to be used? Set to true once it occurs.
+	isReady: false,
+
+	// A counter to track how many items to wait for before
+	// the ready event fires. See #6781
+	readyWait: 1,
+
+	// Hold (or release) the ready event
+	holdReady: function( hold ) {
+		if ( hold ) {
+			jQuery.readyWait++;
+		} else {
+			jQuery.ready( true );
+		}
+	},
+
+	// Handle when the DOM is ready
+	ready: function( wait ) {
+
+		// Abort if there are pending holds or we're already ready
+		if ( wait === true ? --jQuery.readyWait : jQuery.isReady ) {
+			return;
+		}
+
+		// Remember that the DOM is ready
+		jQuery.isReady = true;
+
+		// If a normal DOM Ready event fired, decrement, and wait if need be
+		if ( wait !== true && --jQuery.readyWait > 0 ) {
+			return;
+		}
+
+		// If there are functions bound, to execute
+		readyList.resolveWith( document, [ jQuery ] );
+
+		// Trigger any bound ready events
+		if ( jQuery.fn.trigger ) {
+			jQuery( document ).trigger("ready").off("ready");
+		}
+	},
+
+	// See test/unit/core.js for details concerning isFunction.
+	// Since version 1.3, DOM methods and functions like alert
+	// aren't supported. They return false on IE (#2968).
+	isFunction: function( obj ) {
+		return jQuery.type(obj) === "function";
+	},
+
+	isArray: Array.isArray,
+
+	isWindow: function( obj ) {
+		return obj != null && obj === obj.window;
+	},
+
+	isNumeric: function( obj ) {
+		return !isNaN( parseFloat(obj) ) && isFinite( obj );
+	},
+
+	type: function( obj ) {
+		if ( obj == null ) {
+			return String( obj );
+		}
+		// Support: Safari <= 5.1 (functionish RegExp)
+		return typeof obj === "object" || typeof obj === "function" ?
+			class2type[ core_toString.call(obj) ] || "object" :
+			typeof obj;
+	},
+
+	isPlainObject: function( obj ) {
+		// Not plain objects:
+		// - Any object or value whose internal [[Class]] property is not "[object Object]"
+		// - DOM nodes
+		// - window
+		if ( jQuery.type( obj ) !== "object" || obj.nodeType || jQuery.isWindow( obj ) ) {
+			return false;
+		}
+
+		// Support: Firefox <20
+		// The try/catch suppresses exceptions thrown when attempting to access
+		// the "constructor" property of certain host objects, ie. |window.location|
+		// https://bugzilla.mozilla.org/show_bug.cgi?id=814622
+		try {
+			if ( obj.constructor &&
+					!core_hasOwn.call( obj.constructor.prototype, "isPrototypeOf" ) ) {
+				return false;
+			}
+		} catch ( e ) {
+			return false;
+		}
+
+		// If the function hasn't returned already, we're confident that
+		// |obj| is a plain object, created by {} or constructed with new Object
+		return true;
+	},
+
+	isEmptyObject: function( obj ) {
+		var name;
+		for ( name in obj ) {
+			return false;
+		}
+		return true;
+	},
+
+	error: function( msg ) {
+		throw new Error( msg );
+	},
+
+	// data: string of html
+	// context (optional): If specified, the fragment will be created in this context, defaults to document
+	// keepScripts (optional): If true, will include scripts passed in the html string
+	parseHTML: function( data, context, keepScripts ) {
+		if ( !data || typeof data !== "string" ) {
+			return null;
+		}
+		if ( typeof context === "boolean" ) {
+			keepScripts = context;
+			context = false;
+		}
+		context = context || document;
+
+		var parsed = rsingleTag.exec( data ),
+			scripts = !keepScripts && [];
+
+		// Single tag
+		if ( parsed ) {
+			return [ context.createElement( parsed[1] ) ];
+		}
+
+		parsed = jQuery.buildFragment( [ data ], context, scripts );
+
+		if ( scripts ) {
+			jQuery( scripts ).remove();
+		}
+
+		return jQuery.merge( [], parsed.childNodes );
+	},
+
+	parseJSON: JSON.parse,
+
+	// Cross-browser xml parsing
+	parseXML: function( data ) {
+		var xml, tmp;
+		if ( !data || typeof data !== "string" ) {
+			return null;
+		}
+
+		// Support: IE9
+		try {
+			tmp = new DOMParser();
+			xml = tmp.parseFromString( data , "text/xml" );
+		} catch ( e ) {
+			xml = undefined;
+		}
+
+		if ( !xml || xml.getElementsByTagName( "parsererror" ).length ) {
+			jQuery.error( "Invalid XML: " + data );
+		}
+		return xml;
+	},
+
+	noop: function() {},
+
+	// Evaluates a script in a global context
+	globalEval: function( code ) {
+		var script,
+				indirect = eval;
+
+		code = jQuery.trim( code );
+
+		if ( code ) {
+			// If the code includes a valid, prologue position
+			// strict mode pragma, execute code by injecting a
+			// script tag into the document.
+			if ( code.indexOf("use strict") === 1 ) {
+				script = document.createElement("script");
+				script.text = code;
+				document.head.appendChild( script ).parentNode.removeChild( script );
+			} else {
+			// Otherwise, avoid the DOM node creation, insertion
+			// and removal by using an indirect global eval
+				indirect( code );
+			}
+		}
+	},
+
+	// Convert dashed to camelCase; used by the css and data modules
+	// Microsoft forgot to hump their vendor prefix (#9572)
+	camelCase: function( string ) {
+		return string.replace( rmsPrefix, "ms-" ).replace( rdashAlpha, fcamelCase );
+	},
+
+	nodeName: function( elem, name ) {
+		return elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase();
+	},
+
+	// args is for internal usage only
+	each: function( obj, callback, args ) {
+		var value,
+			i = 0,
+			length = obj.length,
+			isArray = isArraylike( obj );
+
+		if ( args ) {
+			if ( isArray ) {
+				for ( ; i < length; i++ ) {
+					value = callback.apply( obj[ i ], args );
+
+					if ( value === false ) {
+						break;
+					}
+				}
+			} else {
+				for ( i in obj ) {
+					value = callback.apply( obj[ i ], args );
+
+					if ( value === false ) {
+						break;
+					}
+				}
+			}
+
+		// A special, fast, case for the most common use of each
+		} else {
+			if ( isArray ) {
+				for ( ; i < length; i++ ) {
+					value = callback.call( obj[ i ], i, obj[ i ] );
+
+					if ( value === false ) {
+						break;
+					}
+				}
+			} else {
+				for ( i in obj ) {
+					value = callback.call( obj[ i ], i, obj[ i ] );
+
+					if ( value === false ) {
+						break;
+					}
+				}
+			}
+		}
+
+		return obj;
+	},
+
+	trim: function( text ) {
+		return text == null ? "" : core_trim.call( text );
+	},
+
+	// results is for internal usage only
+	makeArray: function( arr, results ) {
+		var ret = results || [];
+
+		if ( arr != null ) {
+			if ( isArraylike( Object(arr) ) ) {
+				jQuery.merge( ret,
+					typeof arr === "string" ?
+					[ arr ] : arr
+				);
+			} else {
+				core_push.call( ret, arr );
+			}
+		}
+
+		return ret;
+	},
+
+	inArray: function( elem, arr, i ) {
+		return arr == null ? -1 : core_indexOf.call( arr, elem, i );
+	},
+
+	merge: function( first, second ) {
+		var l = second.length,
+			i = first.length,
+			j = 0;
+
+		if ( typeof l === "number" ) {
+			for ( ; j < l; j++ ) {
+				first[ i++ ] = second[ j ];
+			}
+		} else {
+			while ( second[j] !== undefined ) {
+				first[ i++ ] = second[ j++ ];
+			}
+		}
+
+		first.length = i;
+
+		return first;
+	},
+
+	grep: function( elems, callback, inv ) {
+		var retVal,
+			ret = [],
+			i = 0,
+			length = elems.length;
+		inv = !!inv;
+
+		// Go through the array, only saving the items
+		// that pass the validator function
+		for ( ; i < length; i++ ) {
+			retVal = !!callback( elems[ i ], i );
+			if ( inv !== retVal ) {
+				ret.push( elems[ i ] );
+			}
+		}
+
+		return ret;
+	},
+
+	// arg is for internal usage only
+	map: function( elems, callback, arg ) {
+		var value,
+			i = 0,
+			length = elems.length,
+			isArray = isArraylike( elems ),
+			ret = [];
+
+		// Go through the array, translating each of the items to their
+		if ( isArray ) {
+			for ( ; i < length; i++ ) {
+				value = callback( elems[ i ], i, arg );
+
+				if ( value != null ) {
+					ret[ ret.length ] = value;
+				}
+			}
+
+		// Go through every key on the object,
+		} else {
+			for ( i in elems ) {
+				value = callback( elems[ i ], i, arg );
+
+				if ( value != null ) {
+					ret[ ret.length ] = value;
+				}
+			}
+		}
+
+		// Flatten any nested arrays
+		return core_concat.apply( [], ret );
+	},
+
+	// A global GUID counter for objects
+	guid: 1,
+
+	// Bind a function to a context, optionally partially applying any
+	// arguments.
+	proxy: function( fn, context ) {
+		var tmp, args, proxy;
+
+		if ( typeof context === "string" ) {
+			tmp = fn[ context ];
+			context = fn;
+			fn = tmp;
+		}
+
+		// Quick check to determine if target is callable, in the spec
+		// this throws a TypeError, but we will just return undefined.
+		if ( !jQuery.isFunction( fn ) ) {
+			return undefined;
+		}
+
+		// Simulated bind
+		args = core_slice.call( arguments, 2 );
+		proxy = function() {
+			return fn.apply( context || this, args.concat( core_slice.call( arguments ) ) );
+		};
+
+		// Set the guid of unique handler to the same of original handler, so it can be removed
+		proxy.guid = fn.guid = fn.guid || jQuery.guid++;
+
+		return proxy;
+	},
+
+	// Multifunctional method to get and set values of a collection
+	// The value/s can optionally be executed if it's a function
+	access: function( elems, fn, key, value, chainable, emptyGet, raw ) {
+		var i = 0,
+			length = elems.length,
+			bulk = key == null;
+
+		// Sets many values
+		if ( jQuery.type( key ) === "object" ) {
+			chainable = true;
+			for ( i in key ) {
+				jQuery.access( elems, fn, i, key[i], true, emptyGet, raw );
+			}
+
+		// Sets one value
+		} else if ( value !== undefined ) {
+			chainable = true;
+
+			if ( !jQuery.isFunction( value ) ) {
+				raw = true;
+			}
+
+			if ( bulk ) {
+				// Bulk operations run against the entire set
+				if ( raw ) {
+					fn.call( elems, value );
+					fn = null;
+
+				// ...except when executing function values
+				} else {
+					bulk = fn;
+					fn = function( elem, key, value ) {
+						return bulk.call( jQuery( elem ), value );
+					};
+				}
+			}
+
+			if ( fn ) {
+				for ( ; i < length; i++ ) {
+					fn( elems[i], key, raw ? value : value.call( elems[i], i, fn( elems[i], key ) ) );
+				}
+			}
+		}
+
+		return chainable ?
+			elems :
+
+			// Gets
+			bulk ?
+				fn.call( elems ) :
+				length ? fn( elems[0], key ) : emptyGet;
+	},
+
+	now: Date.now,
+
+	// A method for quickly swapping in/out CSS properties to get correct calculations.
+	// Note: this method belongs to the css module but it's needed here for the support module.
+	// If support gets modularized, this method should be moved back to the css module.
+	swap: function( elem, options, callback, args ) {
+		var ret, name,
+			old = {};
+
+		// Remember the old values, and insert the new ones
+		for ( name in options ) {
+			old[ name ] = elem.style[ name ];
+			elem.style[ name ] = options[ name ];
+		}
+
+		ret = callback.apply( elem, args || [] );
+
+		// Revert the old values
+		for ( name in options ) {
+			elem.style[ name ] = old[ name ];
+		}
+
+		return ret;
+	}
+});
+
+jQuery.ready.promise = function( obj ) {
+	if ( !readyList ) {
+
+		readyList = jQuery.Deferred();
+
+		// Catch cases where $(document).ready() is called after the browser event has already occurred.
+		// we once tried to use readyState "interactive" here, but it caused issues like the one
+		// discovered by ChrisS here: http://bugs.jquery.com/ticket/12282#comment:15
+		if ( document.readyState === "complete" ) {
+			// Handle it asynchronously to allow scripts the opportunity to delay ready
+			setTimeout( jQuery.ready );
+
+		} else {
+
+			// Use the handy event callback
+			document.addEventListener( "DOMContentLoaded", completed, false );
+
+			// A fallback to window.onload, that will always work
+			window.addEventListener( "load", completed, false );
+		}
+	}
+	return readyList.promise( obj );
+};
+
+// Populate the class2type map
+jQuery.each("Boolean Number String Function Array Date RegExp Object Error".split(" "), function(i, name) {
+	class2type[ "[object " + name + "]" ] = name.toLowerCase();
+});
+
+function isArraylike( obj ) {
+	var length = obj.length,
+		type = jQuery.type( obj );
+
+	if ( jQuery.isWindow( obj ) ) {
+		return false;
+	}
+
+	if ( obj.nodeType === 1 && length ) {
+		return true;
+	}
+
+	return type === "array" || type !== "function" &&
+		( length === 0 ||
+		typeof length === "number" && length > 0 && ( length - 1 ) in obj );
+}
+
+// All jQuery objects should point back to these
+rootjQuery = jQuery(document);
+/*!
+ * Sizzle CSS Selector Engine v1.9.4-pre
+ * http://sizzlejs.com/
+ *
+ * Copyright 2013 jQuery Foundation, Inc. and other contributors
+ * Released under the MIT license
+ * http://jquery.org/license
+ *
+ * Date: 2013-06-03
+ */
+(function( window, undefined ) {
+
+var i,
+	support,
+	cachedruns,
+	Expr,
+	getText,
+	isXML,
+	compile,
+	outermostContext,
+	sortInput,
+
+	// Local document vars
+	setDocument,
+	document,
+	docElem,
+	documentIsHTML,
+	rbuggyQSA,
+	rbuggyMatches,
+	matches,
+	contains,
+
+	// Instance-specific data
+	expando = "sizzle" + -(new Date()),
+	preferredDoc = window.document,
+	dirruns = 0,
+	done = 0,
+	classCache = createCache(),
+	tokenCache = createCache(),
+	compilerCache = createCache(),
+	hasDuplicate = false,
+	sortOrder = function( a, b ) {
+		if ( a === b ) {
+			hasDuplicate = true;
+			return 0;
+		}
+		return 0;
+	},
+
+	// General-purpose constants
+	strundefined = typeof undefined,
+	MAX_NEGATIVE = 1 << 31,
+
+	// Instance methods
+	hasOwn = ({}).hasOwnProperty,
+	arr = [],
+	pop = arr.pop,
+	push_native = arr.push,
+	push = arr.push,
+	slice = arr.slice,
+	// Use a stripped-down indexOf if we can't use a native one
+	indexOf = arr.indexOf || function( elem ) {
+		var i = 0,
+			len = this.length;
+		for ( ; i < len; i++ ) {
+			if ( this[i] === elem ) {
+				return i;
+			}
+		}
+		return -1;
+	},
+
+	booleans = "checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|ismap|loop|multiple|open|readonly|required|scoped",
+
+	// Regular expressions
+
+	// Whitespace characters http://www.w3.org/TR/css3-selectors/#whitespace
+	whitespace = "[\\x20\\t\\r\\n\\f]",
+	// http://www.w3.org/TR/css3-syntax/#characters
+	characterEncoding = "(?:\\\\.|[\\w-]|[^\\x00-\\xa0])+",
+
+	// Loosely modeled on CSS identifier characters
+	// An unquoted value should be a CSS identifier http://www.w3.org/TR/css3-selectors/#attribute-selectors
+	// Proper syntax: http://www.w3.org/TR/CSS21/syndata.html#value-def-identifier
+	identifier = characterEncoding.replace( "w", "w#" ),
+
+	// Acceptable operators http://www.w3.org/TR/selectors/#attribute-selectors
+	attributes = "\\[" + whitespace + "*(" + characterEncoding + ")" + whitespace +
+		"*(?:([*^$|!~]?=)" + whitespace + "*(?:(['\"])((?:\\\\.|[^\\\\])*?)\\3|(" + identifier + ")|)|)" + whitespace + "*\\]",
+
+	// Prefer arguments quoted,
+	//   then not containing pseudos/brackets,
+	//   then attribute selectors/non-parenthetical expressions,
+	//   then anything else
+	// These preferences are here to reduce the number of selectors
+	//   needing tokenize in the PSEUDO preFilter
+	pseudos = ":(" + characterEncoding + ")(?:\\(((['\"])((?:\\\\.|[^\\\\])*?)\\3|((?:\\\\.|[^\\\\()[\\]]|" + attributes.replace( 3, 8 ) + ")*)|.*)\\)|)",
+
+	// Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter
+	rtrim = new RegExp( "^" + whitespace + "+|((?:^|[^\\\\])(?:\\\\.)*)" + whitespace + "+$", "g" ),
+
+	rcomma = new RegExp( "^" + whitespace + "*," + whitespace + "*" ),
+	rcombinators = new RegExp( "^" + whitespace + "*([>+~]|" + whitespace + ")" + whitespace + "*" ),
+
+	rsibling = new RegExp( whitespace + "*[+~]" ),
+	rattributeQuotes = new RegExp( "=" + whitespace + "*([^\\]'\"]*)" + whitespace + "*\\]", "g" ),
+
+	rpseudo = new RegExp( pseudos ),
+	ridentifier = new RegExp( "^" + identifier + "$" ),
+
+	matchExpr = {
+		"ID": new RegExp( "^#(" + characterEncoding + ")" ),
+		"CLASS": new RegExp( "^\\.(" + characterEncoding + ")" ),
+		"TAG": new RegExp( "^(" + characterEncoding.replace( "w", "w*" ) + ")" ),
+		"ATTR": new RegExp( "^" + attributes ),
+		"PSEUDO": new RegExp( "^" + pseudos ),
+		"CHILD": new RegExp( "^:(only|first|last|nth|nth-last)-(child|of-type)(?:\\(" + whitespace +
+			"*(even|odd|(([+-]|)(\\d*)n|)" + whitespace + "*(?:([+-]|)" + whitespace +
+			"*(\\d+)|))" + whitespace + "*\\)|)", "i" ),
+		"bool": new RegExp( "^(?:" + booleans + ")$", "i" ),
+		// For use in libraries implementing .is()
+		// We use this for POS matching in `select`
+		"needsContext": new RegExp( "^" + whitespace + "*[>+~]|:(even|odd|eq|gt|lt|nth|first|last)(?:\\(" +
+			whitespace + "*((?:-\\d)?\\d*)" + whitespace + "*\\)|)(?=[^-]|$)", "i" )
+	},
+
+	rnative = /^[^{]+\{\s*\[native \w/,
+
+	// Easily-parseable/retrievable ID or TAG or CLASS selectors
+	rquickExpr = /^(?:#([\w-]+)|(\w+)|\.([\w-]+))$/,
+
+	rinputs = /^(?:input|select|textarea|button)$/i,
+	rheader = /^h\d$/i,
+
+	rescape = /'|\\/g,
+
+	// CSS escapes http://www.w3.org/TR/CSS21/syndata.html#escaped-characters
+	runescape = new RegExp( "\\\\([\\da-f]{1,6}" + whitespace + "?|(" + whitespace + ")|.)", "ig" ),
+	funescape = function( _, escaped, escapedWhitespace ) {
+		var high = "0x" + escaped - 0x10000;
+		// NaN means non-codepoint
+		// Support: Firefox
+		// Workaround erroneous numeric interpretation of +"0x"
+		return high !== high || escapedWhitespace ?
+			escaped :
+			// BMP codepoint
+			high < 0 ?
+				String.fromCharCode( high + 0x10000 ) :
+				// Supplemental Plane codepoint (surrogate pair)
+				String.fromCharCode( high >> 10 | 0xD800, high & 0x3FF | 0xDC00 );
+	};
+
+// Optimize for push.apply( _, NodeList )
+try {
+	push.apply(
+		(arr = slice.call( preferredDoc.childNodes )),
+		preferredDoc.childNodes
+	);
+	// Support: Android<4.0
+	// Detect silently failing push.apply
+	arr[ preferredDoc.childNodes.length ].nodeType;
+} catch ( e ) {
+	push = { apply: arr.length ?
+
+		// Leverage slice if possible
+		function( target, els ) {
+			push_native.apply( target, slice.call(els) );
+		} :
+
+		// Support: IE<9
+		// Otherwise append directly
+		function( target, els ) {
+			var j = target.length,
+				i = 0;
+			// Can't trust NodeList.length
+			while ( (target[j++] = els[i++]) ) {}
+			target.length = j - 1;
+		}
+	};
+}
+
+function Sizzle( selector, context, results, seed ) {
+	var match, elem, m, nodeType,
+		// QSA vars
+		i, groups, old, nid, newContext, newSelector;
+
+	if ( ( context ? context.ownerDocument || context : preferredDoc ) !== document ) {
+		setDocument( context );
+	}
+
+	context = context || document;
+	results = results || [];
+
+	if ( !selector || typeof selector !== "string" ) {
+		return results;
+	}
+
+	if ( (nodeType = context.nodeType) !== 1 && nodeType !== 9 ) {
+		return [];
+	}
+
+	if ( documentIsHTML && !seed ) {
+
+		// Shortcuts
+		if ( (match = rquickExpr.exec( selector )) ) {
+			// Speed-up: Sizzle("#ID")
+			if ( (m = match[1]) ) {
+				if ( nodeType === 9 ) {
+					elem = context.getElementById( m );
+					// Check parentNode to catch when Blackberry 4.6 returns
+					// nodes that are no longer in the document #6963
+					if ( elem && elem.parentNode ) {
+						// Handle the case where IE, Opera, and Webkit return items
+						// by name instead of ID
+						if ( elem.id === m ) {
+							results.push( elem );
+							return results;
+						}
+					} else {
+						return results;
+					}
+				} else {
+					// Context is not a document
+					if ( context.ownerDocument && (elem = context.ownerDocument.getElementById( m )) &&
+						contains( context, elem ) && elem.id === m ) {
+						results.push( elem );
+						return results;
+					}
+				}
+
+			// Speed-up: Sizzle("TAG")
+			} else if ( match[2] ) {
+				push.apply( results, context.getElementsByTagName( selector ) );
+				return results;
+
+			// Speed-up: Sizzle(".CLASS")
+			} else if ( (m = match[3]) && support.getElementsByClassName && context.getElementsByClassName ) {
+				push.apply( results, context.getElementsByClassName( m ) );
+				return results;
+			}
+		}
+
+		// QSA path
+		if ( support.qsa && (!rbuggyQSA || !rbuggyQSA.test( selector )) ) {
+			nid = old = expando;
+			newContext = context;
+			newSelector = nodeType === 9 && selector;
+
+			// qSA works strangely on Element-rooted queries
+			// We can work around this by specifying an extra ID on the root
+			// and working up from there (Thanks to Andrew Dupont for the technique)
+			// IE 8 doesn't work on object elements
+			if ( nodeType === 1 && context.nodeName.toLowerCase() !== "object" ) {
+				groups = tokenize( selector );
+
+				if ( (old = context.getAttribute("id")) ) {
+					nid = old.replace( rescape, "\\$&" );
+				} else {
+					context.setAttribute( "id", nid );
+				}
+				nid = "[id='" + nid + "'] ";
+
+				i = groups.length;
+				while ( i-- ) {
+					groups[i] = nid + toSelector( groups[i] );
+				}
+				newContext = rsibling.test( selector ) && context.parentNode || context;
+				newSelector = groups.join(",");
+			}
+
+			if ( newSelector ) {
+				try {
+					push.apply( results,
+						newContext.querySelectorAll( newSelector )
+					);
+					return results;
+				} catch(qsaError) {
+				} finally {
+					if ( !old ) {
+						context.removeAttribute("id");
+					}
+				}
+			}
+		}
+	}
+
+	// All others
+	return select( selector.replace( rtrim, "$1" ), context, results, seed );
+}
+
+/**
+ * Create key-value caches of limited size
+ * @returns {Function(string, Object)} Returns the Object data after storing it on itself with
+ *	property name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength)
+ *	deleting the oldest entry
+ */
+function createCache() {
+	var keys = [];
+
+	function cache( key, value ) {
+		// Use (key + " ") to avoid collision with native prototype properties (see Issue #157)
+		if ( keys.push( key += " " ) > Expr.cacheLength ) {
+			// Only keep the most recent entries
+			delete cache[ keys.shift() ];
+		}
+		return (cache[ key ] = value);
+	}
+	return cache;
+}
+
+/**
+ * Mark a function for special use by Sizzle
+ * @param {Function} fn The function to mark
+ */
+function markFunction( fn ) {
+	fn[ expando ] = true;
+	return fn;
+}
+
+/**
+ * Support testing using an element
+ * @param {Function} fn Passed the created div and expects a boolean result
+ */
+function assert( fn ) {
+	var div = document.createElement("div");
+
+	try {
+		return !!fn( div );
+	} catch (e) {
+		return false;
+	} finally {
+		// Remove from its parent by default
+		if ( div.parentNode ) {
+			div.parentNode.removeChild( div );
+		}
+		// release memory in IE
+		div = null;
+	}
+}
+
+/**
+ * Adds the same handler for all of the specified attrs
+ * @param {String} attrs Pipe-separated list of attributes
+ * @param {Function} handler The method that will be applied
+ */
+function addHandle( attrs, handler ) {
+	var arr = attrs.split("|"),
+		i = attrs.length;
+
+	while ( i-- ) {
+		Expr.attrHandle[ arr[i] ] = handler;
+	}
+}
+
+/**
+ * Checks document order of two siblings
+ * @param {Element} a
+ * @param {Element} b
+ * @returns {Number} Returns less than 0 if a precedes b, greater than 0 if a follows b
+ */
+function siblingCheck( a, b ) {
+	var cur = b && a,
+		diff = cur && a.nodeType === 1 && b.nodeType === 1 &&
+			( ~b.sourceIndex || MAX_NEGATIVE ) -
+			( ~a.sourceIndex || MAX_NEGATIVE );
+
+	// Use IE sourceIndex if available on both nodes
+	if ( diff ) {
+		return diff;
+	}
+
+	// Check if b follows a
+	if ( cur ) {
+		while ( (cur = cur.nextSibling) ) {
+			if ( cur === b ) {
+				return -1;
+			}
+		}
+	}
+
+	return a ? 1 : -1;
+}
+
+/**
+ * Returns a function to use in pseudos for input types
+ * @param {String} type
+ */
+function createInputPseudo( type ) {
+	return function( elem ) {
+		var name = elem.nodeName.toLowerCase();
+		return name === "input" && elem.type === type;
+	};
+}
+
+/**
+ * Returns a function to use in pseudos for buttons
+ * @param {String} type
+ */
+function createButtonPseudo( type ) {
+	return function( elem ) {
+		var name = elem.nodeName.toLowerCase();
+		return (name === "input" || name === "button") && elem.type === type;
+	};
+}
+
+/**
+ * Returns a function to use in pseudos for positionals
+ * @param {Function} fn
+ */
+function createPositionalPseudo( fn ) {
+	return markFunction(function( argument ) {
+		argument = +argument;
+		return markFunction(function( seed, matches ) {
+			var j,
+				matchIndexes = fn( [], seed.length, argument ),
+				i = matchIndexes.length;
+
+			// Match elements found at the specified indexes
+			while ( i-- ) {
+				if ( seed[ (j = matchIndexes[i]) ] ) {
+					seed[j] = !(matches[j] = seed[j]);
+				}
+			}
+		});
+	});
+}
+
+/**
+ * Detect xml
+ * @param {Element|Object} elem An element or a document
+ */
+isXML = Sizzle.isXML = function( elem ) {
+	// documentElement is verified for cases where it doesn't yet exist
+	// (such as loading iframes in IE - #4833)
+	var documentElement = elem && (elem.ownerDocument || elem).documentElement;
+	return documentElement ? documentElement.nodeName !== "HTML" : false;
+};
+
+// Expose support vars for convenience
+support = Sizzle.support = {};
+
+/**
+ * Sets document-related variables once based on the current document
+ * @param {Element|Object} [doc] An element or document object to use to set the document
+ * @returns {Object} Returns the current document
+ */
+setDocument = Sizzle.setDocument = function( node ) {
+	var doc = node ? node.ownerDocument || node : preferredDoc,
+		parent = doc.defaultView;
+
+	// If no document and documentElement is available, return
+	if ( doc === document || doc.nodeType !== 9 || !doc.documentElement ) {
+		return document;
+	}
+
+	// Set our document
+	document = doc;
+	docElem = doc.documentElement;
+
+	// Support tests
+	documentIsHTML = !isXML( doc );
+
+	// Support: IE>8
+	// If iframe document is assigned to "document" variable and if iframe has been reloaded,
+	// IE will throw "permission denied" error when accessing "document" variable, see jQuery #13936
+	// IE6-8 do not support the defaultView property so parent will be undefined
+	if ( parent && parent.attachEvent && parent !== parent.top ) {
+		parent.attachEvent( "onbeforeunload", function() {
+			setDocument();
+		});
+	}
+
+	/* Attributes
+	---------------------------------------------------------------------- */
+
+	// Support: IE<8
+	// Verify that getAttribute really returns attributes and not properties (excepting IE8 booleans)
+	support.attributes = assert(function( div ) {
+		div.className = "i";
+		return !div.getAttribute("className");
+	});
+
+	/* getElement(s)By*
+	---------------------------------------------------------------------- */
+
+	// Check if getElementsByTagName("*") returns only elements
+	support.getElementsByTagName = assert(function( div ) {
+		div.appendChild( doc.createComment("") );
+		return !div.getElementsByTagName("*").length;
+	});
+
+	// Check if getElementsByClassName can be trusted
+	support.getElementsByClassName = assert(function( div ) {
+		div.innerHTML = "<div class='a'></div><div class='a i'></div>";
+
+		// Support: Safari<4
+		// Catch class over-caching
+		div.firstChild.className = "i";
+		// Support: Opera<10
+		// Catch gEBCN failure to find non-leading classes
+		return div.getElementsByClassName("i").length === 2;
+	});
+
+	// Support: IE<10
+	// Check if getElementById returns elements by name
+	// The broken getElementById methods don't pick up programatically-set names,
+	// so use a roundabout getElementsByName test
+	support.getById = assert(function( div ) {
+		docElem.appendChild( div ).id = expando;
+		return !doc.getElementsByName || !doc.getElementsByName( expando ).length;
+	});
+
+	// ID find and filter
+	if ( support.getById ) {
+		Expr.find["ID"] = function( id, context ) {
+			if ( typeof context.getElementById !== strundefined && documentIsHTML ) {
+				var m = context.getElementById( id );
+				// Check parentNode to catch when Blackberry 4.6 returns
+				// nodes that are no longer in the document #6963
+				return m && m.parentNode ? [m] : [];
+			}
+		};
+		Expr.filter["ID"] = function( id ) {
+			var attrId = id.replace( runescape, funescape );
+			return function( elem ) {
+				return elem.getAttribute("id") === attrId;
+			};
+		};
+	} else {
+		// Support: IE6/7
+		// getElementById is not reliable as a find shortcut
+		delete Expr.find["ID"];
+
+		Expr.filter["ID"] =  function( id ) {
+			var attrId = id.replace( runescape, funescape );
+			return function( elem ) {
+				var node = typeof elem.getAttributeNode !== strundefined && elem.getAttributeNode("id");
+				return node && node.value === attrId;
+			};
+		};
+	}
+
+	// Tag
+	Expr.find["TAG"] = support.getElementsByTagName ?
+		function( tag, context ) {
+			if ( typeof context.getElementsByTagName !== strundefined ) {
+				return context.getElementsByTagName( tag );
+			}
+		} :
+		function( tag, context ) {
+			var elem,
+				tmp = [],
+				i = 0,
+				results = context.getElementsByTagName( tag );
+
+			// Filter out possible comments
+			if ( tag === "*" ) {
+				while ( (elem = results[i++]) ) {
+					if ( elem.nodeType === 1 ) {
+						tmp.push( elem );
+					}
+				}
+
+				return tmp;
+			}
+			return results;
+		};
+
+	// Class
+	Expr.find["CLASS"] = support.getElementsByClassName && function( className, context ) {
+		if ( typeof context.getElementsByClassName !== strundefined && documentIsHTML ) {
+			return context.getElementsByClassName( className );
+		}
+	};
+
+	/* QSA/matchesSelector
+	---------------------------------------------------------------------- */
+
+	// QSA and matchesSelector support
+
+	// matchesSelector(:active) reports false when true (IE9/Opera 11.5)
+	rbuggyMatches = [];
+
+	// qSa(:focus) reports false when true (Chrome 21)
+	// We allow this because of a bug in IE8/9 that throws an error
+	// whenever `document.activeElement` is accessed on an iframe
+	// So, we allow :focus to pass through QSA all the time to avoid the IE error
+	// See http://bugs.jquery.com/ticket/13378
+	rbuggyQSA = [];
+
+	if ( (support.qsa = rnative.test( doc.querySelectorAll )) ) {
+		// Build QSA regex
+		// Regex strategy adopted from Diego Perini
+		assert(function( div ) {
+			// Select is set to empty string on purpose
+			// This is to test IE's treatment of not explicitly
+			// setting a boolean content attribute,
+			// since its presence should be enough
+			// http://bugs.jquery.com/ticket/12359
+			div.innerHTML = "<select><option selected=''></option></select>";
+
+			// Support: IE8
+			// Boolean attributes and "value" are not treated correctly
+			if ( !div.querySelectorAll("[selected]").length ) {
+				rbuggyQSA.push( "\\[" + whitespace + "*(?:value|" + booleans + ")" );
+			}
+
+			// Webkit/Opera - :checked should return selected option elements
+			// http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked
+			// IE8 throws error here and will not see later tests
+			if ( !div.querySelectorAll(":checked").length ) {
+				rbuggyQSA.push(":checked");
+			}
+		});
+
+		assert(function( div ) {
+
+			// Support: Opera 10-12/IE8
+			// ^= $= *= and empty values
+			// Should not select anything
+			// Support: Windows 8 Native Apps
+			// The type attribute is restricted during .innerHTML assignment
+			var input = doc.createElement("input");
+			input.setAttribute( "type", "hidden" );
+			div.appendChild( input ).setAttribute( "t", "" );
+
+			if ( div.querySelectorAll("[t^='']").length ) {
+				rbuggyQSA.push( "[*^$]=" + whitespace + "*(?:''|\"\")" );
+			}
+
+			// FF 3.5 - :enabled/:disabled and hidden elements (hidden elements are still enabled)
+			// IE8 throws error here and will not see later tests
+			if ( !div.querySelectorAll(":enabled").length ) {
+				rbuggyQSA.push( ":enabled", ":disabled" );
+			}
+
+			// Opera 10-11 does not throw on post-comma invalid pseudos
+			div.querySelectorAll("*,:x");
+			rbuggyQSA.push(",.*:");
+		});
+	}
+
+	if ( (support.matchesSelector = rnative.test( (matches = docElem.webkitMatchesSelector ||
+		docElem.mozMatchesSelector ||
+		docElem.oMatchesSelector ||
+		docElem.msMatchesSelector) )) ) {
+
+		assert(function( div ) {
+			// Check to see if it's possible to do matchesSelector
+			// on a disconnected node (IE 9)
+			support.disconnectedMatch = matches.call( div, "div" );
+
+			// This should fail with an exception
+			// Gecko does not error, returns false instead
+			matches.call( div, "[s!='']:x" );
+			rbuggyMatches.push( "!=", pseudos );
+		});
+	}
+
+	rbuggyQSA = rbuggyQSA.length && new RegExp( rbuggyQSA.join("|") );
+	rbuggyMatches = rbuggyMatches.length && new RegExp( rbuggyMatches.join("|") );
+
+	/* Contains
+	---------------------------------------------------------------------- */
+
+	// Element contains another
+	// Purposefully does not implement inclusive descendent
+	// As in, an element does not contain itself
+	contains = rnative.test( docElem.contains ) || docElem.compareDocumentPosition ?
+		function( a, b ) {
+			var adown = a.nodeType === 9 ? a.documentElement : a,
+				bup = b && b.parentNode;
+			return a === bup || !!( bup && bup.nodeType === 1 && (
+				adown.contains ?
+					adown.contains( bup ) :
+					a.compareDocumentPosition && a.compareDocumentPosition( bup ) & 16
+			));
+		} :
+		function( a, b ) {
+			if ( b ) {
+				while ( (b = b.parentNode) ) {
+					if ( b === a ) {
+						return true;
+					}
+				}
+			}
+			return false;
+		};
+
+	/* Sorting
+	---------------------------------------------------------------------- */
+
+	// Document order sorting
+	sortOrder = docElem.compareDocumentPosition ?
+	function( a, b ) {
+
+		// Flag for duplicate removal
+		if ( a === b ) {
+			hasDuplicate = true;
+			return 0;
+		}
+
+		var compare = b.compareDocumentPosition && a.compareDocumentPosition && a.compareDocumentPosition( b );
+
+		if ( compare ) {
+			// Disconnected nodes
+			if ( compare & 1 ||
+				(!support.sortDetached && b.compareDocumentPosition( a ) === compare) ) {
+
+				// Choose the first element that is related to our preferred document
+				if ( a === doc || contains(preferredDoc, a) ) {
+					return -1;
+				}
+				if ( b === doc || contains(preferredDoc, b) ) {
+					return 1;
+				}
+
+				// Maintain original order
+				return sortInput ?
+					( indexOf.call( sortInput, a ) - indexOf.call( sortInput, b ) ) :
+					0;
+			}
+
+			return compare & 4 ? -1 : 1;
+		}
+
+		// Not directly comparable, sort on existence of method
+		return a.compareDocumentPosition ? -1 : 1;
+	} :
+	function( a, b ) {
+		var cur,
+			i = 0,
+			aup = a.parentNode,
+			bup = b.parentNode,
+			ap = [ a ],
+			bp = [ b ];
+
+		// Exit early if the nodes are identical
+		if ( a === b ) {
+			hasDuplicate = true;
+			return 0;
+
+		// Parentless nodes are either documents or disconnected
+		} else if ( !aup || !bup ) {
+			return a === doc ? -1 :
+				b === doc ? 1 :
+				aup ? -1 :
+				bup ? 1 :
+				sortInput ?
+				( indexOf.call( sortInput, a ) - indexOf.call( sortInput, b ) ) :
+				0;
+
+		// If the nodes are siblings, we can do a quick check
+		} else if ( aup === bup ) {
+			return siblingCheck( a, b );
+		}
+
+		// Otherwise we need full lists of their ancestors for comparison
+		cur = a;
+		while ( (cur = cur.parentNode) ) {
+			ap.unshift( cur );
+		}
+		cur = b;
+		while ( (cur = cur.parentNode) ) {
+			bp.unshift( cur );
+		}
+
+		// Walk down the tree looking for a discrepancy
+		while ( ap[i] === bp[i] ) {
+			i++;
+		}
+
+		return i ?
+			// Do a sibling check if the nodes have a common ancestor
+			siblingCheck( ap[i], bp[i] ) :
+
+			// Otherwise nodes in our document sort first
+			ap[i] === preferredDoc ? -1 :
+			bp[i] === preferredDoc ? 1 :
+			0;
+	};
+
+	return doc;
+};
+
+Sizzle.matches = function( expr, elements ) {
+	return Sizzle( expr, null, null, elements );
+};
+
+Sizzle.matchesSelector = function( elem, expr ) {
+	// Set document vars if needed
+	if ( ( elem.ownerDocument || elem ) !== document ) {
+		setDocument( elem );
+	}
+
+	// Make sure that attribute selectors are quoted
+	expr = expr.replace( rattributeQuotes, "='$1']" );
+
+	if ( support.matchesSelector && documentIsHTML &&
+		( !rbuggyMatches || !rbuggyMatches.test( expr ) ) &&
+		( !rbuggyQSA     || !rbuggyQSA.test( expr ) ) ) {
+
+		try {
+			var ret = matches.call( elem, expr );
+
+			// IE 9's matchesSelector returns false on disconnected nodes
+			if ( ret || support.disconnectedMatch ||
+					// As well, disconnected nodes are said to be in a document
+					// fragment in IE 9
+					elem.document && elem.document.nodeType !== 11 ) {
+				return ret;
+			}
+		} catch(e) {}
+	}
+
+	return Sizzle( expr, document, null, [elem] ).length > 0;
+};
+
+Sizzle.contains = function( context, elem ) {
+	// Set document vars if needed
+	if ( ( context.ownerDocument || context ) !== document ) {
+		setDocument( context );
+	}
+	return contains( context, elem );
+};
+
+Sizzle.attr = function( elem, name ) {
+	// Set document vars if needed
+	if ( ( elem.ownerDocument || elem ) !== document ) {
+		setDocument( elem );
+	}
+
+	var fn = Expr.attrHandle[ name.toLowerCase() ],
+		// Don't get fooled by Object.prototype properties (jQuery #13807)
+		val = fn && hasOwn.call( Expr.attrHandle, name.toLowerCase() ) ?
+			fn( elem, name, !documentIsHTML ) :
+			undefined;
+
+	return val === undefined ?
+		support.attributes || !documentIsHTML ?
+			elem.getAttribute( name ) :
+			(val = elem.getAttributeNode(name)) && val.specified ?
+				val.value :
+				null :
+		val;
+};
+
+Sizzle.error = function( msg ) {
+	throw new Error( "Syntax error, unrecognized expression: " + msg );
+};
+
+/**
+ * Document sorting and removing duplicates
+ * @param {ArrayLike} results
+ */
+Sizzle.uniqueSort = function( results ) {
+	var elem,
+		duplicates = [],
+		j = 0,
+		i = 0;
+
+	// Unless we *know* we can detect duplicates, assume their presence
+	hasDuplicate = !support.detectDuplicates;
+	sortInput = !support.sortStable && results.slice( 0 );
+	results.sort( sortOrder );
+
+	if ( hasDuplicate ) {
+		while ( (elem = results[i++]) ) {
+			if ( elem === results[ i ] ) {
+				j = duplicates.push( i );
+			}
+		}
+		while ( j-- ) {
+			results.splice( duplicates[ j ], 1 );
+		}
+	}
+
+	return results;
+};
+
+/**
+ * Utility function for retrieving the text value of an array of DOM nodes
+ * @param {Array|Element} elem
+ */
+getText = Sizzle.getText = function( elem ) {
+	var node,
+		ret = "",
+		i = 0,
+		nodeType = elem.nodeType;
+
+	if ( !nodeType ) {
+		// If no nodeType, this is expected to be an array
+		for ( ; (node = elem[i]); i++ ) {
+			// Do not traverse comment nodes
+			ret += getText( node );
+		}
+	} else if ( nodeType === 1 || nodeType === 9 || nodeType === 11 ) {
+		// Use textContent for elements
+		// innerText usage removed for consistency of new lines (see #11153)
+		if ( typeof elem.textContent === "string" ) {
+			return elem.textContent;
+		} else {
+			// Traverse its children
+			for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) {
+				ret += getText( elem );
+			}
+		}
+	} else if ( nodeType === 3 || nodeType === 4 ) {
+		return elem.nodeValue;
+	}
+	// Do not include comment or processing instruction nodes
+
+	return ret;
+};
+
+Expr = Sizzle.selectors = {
+
+	// Can be adjusted by the user
+	cacheLength: 50,
+
+	createPseudo: markFunction,
+
+	match: matchExpr,
+
+	attrHandle: {},
+
+	find: {},
+
+	relative: {
+		">": { dir: "parentNode", first: true },
+		" ": { dir: "parentNode" },
+		"+": { dir: "previousSibling", first: true },
+		"~": { dir: "previousSibling" }
+	},
+
+	preFilter: {
+		"ATTR": function( match ) {
+			match[1] = match[1].replace( runescape, funescape );
+
+			// Move the given value to match[3] whether quoted or unquoted
+			match[3] = ( match[4] || match[5] || "" ).replace( runescape, funescape );
+
+			if ( match[2] === "~=" ) {
+				match[3] = " " + match[3] + " ";
+			}
+
+			return match.slice( 0, 4 );
+		},
+
+		"CHILD": function( match ) {
+			/* matches from matchExpr["CHILD"]
+				1 type (only|nth|...)
+				2 what (child|of-type)
+				3 argument (even|odd|\d*|\d*n([+-]\d+)?|...)
+				4 xn-component of xn+y argument ([+-]?\d*n|)
+				5 sign of xn-component
+				6 x of xn-component
+				7 sign of y-component
+				8 y of y-component
+			*/
+			match[1] = match[1].toLowerCase();
+
+			if ( match[1].slice( 0, 3 ) === "nth" ) {
+				// nth-* requires argument
+				if ( !match[3] ) {
+					Sizzle.error( match[0] );
+				}
+
+				// numeric x and y parameters for Expr.filter.CHILD
+				// remember that false/true cast respectively to 0/1
+				match[4] = +( match[4] ? match[5] + (match[6] || 1) : 2 * ( match[3] === "even" || match[3] === "odd" ) );
+				match[5] = +( ( match[7] + match[8] ) || match[3] === "odd" );
+
+			// other types prohibit arguments
+			} else if ( match[3] ) {
+				Sizzle.error( match[0] );
+			}
+
+			return match;
+		},
+
+		"PSEUDO": function( match ) {
+			var excess,
+				unquoted = !match[5] && match[2];
+
+			if ( matchExpr["CHILD"].test( match[0] ) ) {
+				return null;
+			}
+
+			// Accept quoted arguments as-is
+			if ( match[3] && match[4] !== undefined ) {
+				match[2] = match[4];
+
+			// Strip excess characters from unquoted arguments
+			} else if ( unquoted && rpseudo.test( unquoted ) &&
+				// Get excess from tokenize (recursively)
+				(excess = tokenize( unquoted, true )) &&
+				// advance to the next closing parenthesis
+				(excess = unquoted.indexOf( ")", unquoted.length - excess ) - unquoted.length) ) {
+
+				// excess is a negative index
+				match[0] = match[0].slice( 0, excess );
+				match[2] = unquoted.slice( 0, excess );
+			}
+
+			// Return only captures needed by the pseudo filter method (type and argument)
+			return match.slice( 0, 3 );
+		}
+	},
+
+	filter: {
+
+		"TAG": function( nodeNameSelector ) {
+			var nodeName = nodeNameSelector.replace( runescape, funescape ).toLowerCase();
+			return nodeNameSelector === "*" ?
+				function() { return true; } :
+				function( elem ) {
+					return elem.nodeName && elem.nodeName.toLowerCase() === nodeName;
+				};
+		},
+
+		"CLASS": function( className ) {
+			var pattern = classCache[ className + " " ];
+
+			return pattern ||
+				(pattern = new RegExp( "(^|" + whitespace + ")" + className + "(" + whitespace + "|$)" )) &&
+				classCache( className, function( elem ) {
+					return pattern.test( typeof elem.className === "string" && elem.className || typeof elem.getAttribute !== strundefined && elem.getAttribute("class") || "" );
+				});
+		},
+
+		"ATTR": function( name, operator, check ) {
+			return function( elem ) {
+				var result = Sizzle.attr( elem, name );
+
+				if ( result == null ) {
+					return operator === "!=";
+				}
+				if ( !operator ) {
+					return true;
+				}
+
+				result += "";
+
+				return operator === "=" ? result === check :
+					operator === "!=" ? result !== check :
+					operator === "^=" ? check && result.indexOf( check ) === 0 :
+					operator === "*=" ? check && result.indexOf( check ) > -1 :
+					operator === "$=" ? check && result.slice( -check.length ) === check :
+					operator === "~=" ? ( " " + result + " " ).indexOf( check ) > -1 :
+					operator === "|=" ? result === check || result.slice( 0, check.length + 1 ) === check + "-" :
+					false;
+			};
+		},
+
+		"CHILD": function( type, what, argument, first, last ) {
+			var simple = type.slice( 0, 3 ) !== "nth",
+				forward = type.slice( -4 ) !== "last",
+				ofType = what === "of-type";
+
+			return first === 1 && last === 0 ?
+
+				// Shortcut for :nth-*(n)
+				function( elem ) {
+					return !!elem.parentNode;
+				} :
+
+				function( elem, context, xml ) {
+					var cache, outerCache, node, diff, nodeIndex, start,
+						dir = simple !== forward ? "nextSibling" : "previousSibling",
+						parent = elem.parentNode,
+						name = ofType && elem.nodeName.toLowerCase(),
+						useCache = !xml && !ofType;
+
+					if ( parent ) {
+
+						// :(first|last|only)-(child|of-type)
+						if ( simple ) {
+							while ( dir ) {
+								node = elem;
+								while ( (node = node[ dir ]) ) {
+									if ( ofType ? node.nodeName.toLowerCase() === name : node.nodeType === 1 ) {
+										return false;
+									}
+								}
+								// Reverse direction for :only-* (if we haven't yet done so)
+								start = dir = type === "only" && !start && "nextSibling";
+							}
+							return true;
+						}
+
+						start = [ forward ? parent.firstChild : parent.lastChild ];
+
+						// non-xml :nth-child(...) stores cache data on `parent`
+						if ( forward && useCache ) {
+							// Seek `elem` from a previously-cached index
+							outerCache = parent[ expando ] || (parent[ expando ] = {});
+							cache = outerCache[ type ] || [];
+							nodeIndex = cache[0] === dirruns && cache[1];
+							diff = cache[0] === dirruns && cache[2];
+							node = nodeIndex && parent.childNodes[ nodeIndex ];
+
+							while ( (node = ++nodeIndex && node && node[ dir ] ||
+
+								// Fallback to seeking `elem` from the start
+								(diff = nodeIndex = 0) || start.pop()) ) {
+
+								// When found, cache indexes on `parent` and break
+								if ( node.nodeType === 1 && ++diff && node === elem ) {
+									outerCache[ type ] = [ dirruns, nodeIndex, diff ];
+									break;
+								}
+							}
+
+						// Use previously-cached element index if available
+						} else if ( useCache && (cache = (elem[ expando ] || (elem[ expando ] = {}))[ type ]) && cache[0] === dirruns ) {
+							diff = cache[1];
+
+						// xml :nth-child(...) or :nth-last-child(...) or :nth(-last)?-of-type(...)
+						} else {
+							// Use the same loop as above to seek `elem` from the start
+							while ( (node = ++nodeIndex && node && node[ dir ] ||
+								(diff = nodeIndex = 0) || start.pop()) ) {
+
+								if ( ( ofType ? node.nodeName.toLowerCase() === name : node.nodeType === 1 ) && ++diff ) {
+									// Cache the index of each encountered element
+									if ( useCache ) {
+										(node[ expando ] || (node[ expando ] = {}))[ type ] = [ dirruns, diff ];
+									}
+
+									if ( node === elem ) {
+										break;
+									}
+								}
+							}
+						}
+
+						// Incorporate the offset, then check against cycle size
+						diff -= last;
+						return diff === first || ( diff % first === 0 && diff / first >= 0 );
+					}
+				};
+		},
+
+		"PSEUDO": function( pseudo, argument ) {
+			// pseudo-class names are case-insensitive
+			// http://www.w3.org/TR/selectors/#pseudo-classes
+			// Prioritize by case sensitivity in case custom pseudos are added with uppercase letters
+			// Remember that setFilters inherits from pseudos
+			var args,
+				fn = Expr.pseudos[ pseudo ] || Expr.setFilters[ pseudo.toLowerCase() ] ||
+					Sizzle.error( "unsupported pseudo: " + pseudo );
+
+			// The user may use createPseudo to indicate that
+			// arguments are needed to create the filter function
+			// just as Sizzle does
+			if ( fn[ expando ] ) {
+				return fn( argument );
+			}
+
+			// But maintain support for old signatures
+			if ( fn.length > 1 ) {
+				args = [ pseudo, pseudo, "", argument ];
+				return Expr.setFilters.hasOwnProperty( pseudo.toLowerCase() ) ?
+					markFunction(function( seed, matches ) {
+						var idx,
+							matched = fn( seed, argument ),
+							i = matched.length;
+						while ( i-- ) {
+							idx = indexOf.call( seed, matched[i] );
+							seed[ idx ] = !( matches[ idx ] = matched[i] );
+						}
+					}) :
+					function( elem ) {
+						return fn( elem, 0, args );
+					};
+			}
+
+			return fn;
+		}
+	},
+
+	pseudos: {
+		// Potentially complex pseudos
+		"not": markFunction(function( selector ) {
+			// Trim the selector passed to compile
+			// to avoid treating leading and trailing
+			// spaces as combinators
+			var input = [],
+				results = [],
+				matcher = compile( selector.replace( rtrim, "$1" ) );
+
+			return matcher[ expando ] ?
+				markFunction(function( seed, matches, context, xml ) {
+					var elem,
+						unmatched = matcher( seed, null, xml, [] ),
+						i = seed.length;
+
+					// Match elements unmatched by `matcher`
+					while ( i-- ) {
+						if ( (elem = unmatched[i]) ) {
+							seed[i] = !(matches[i] = elem);
+						}
+					}
+				}) :
+				function( elem, context, xml ) {
+					input[0] = elem;
+					matcher( input, null, xml, results );
+					return !results.pop();
+				};
+		}),
+
+		"has": markFunction(function( selector ) {
+			return function( elem ) {
+				return Sizzle( selector, elem ).length > 0;
+			};
+		}),
+
+		"contains": markFunction(function( text ) {
+			return function( elem ) {
+				return ( elem.textContent || elem.innerText || getText( elem ) ).indexOf( text ) > -1;
+			};
+		}),
+
+		// "Whether an element is represented by a :lang() selector
+		// is based solely on the element's language value
+		// being equal to the identifier C,
+		// or beginning with the identifier C immediately followed by "-".
+		// The matching of C against the element's language value is performed case-insensitively.
+		// The identifier C does not have to be a valid language name."
+		// http://www.w3.org/TR/selectors/#lang-pseudo
+		"lang": markFunction( function( lang ) {
+			// lang value must be a valid identifier
+			if ( !ridentifier.test(lang || "") ) {
+				Sizzle.error( "unsupported lang: " + lang );
+			}
+			lang = lang.replace( runescape, funescape ).toLowerCase();
+			return function( elem ) {
+				var elemLang;
+				do {
+					if ( (elemLang = documentIsHTML ?
+						elem.lang :
+						elem.getAttribute("xml:lang") || elem.getAttribute("lang")) ) {
+
+						elemLang = elemLang.toLowerCase();
+						return elemLang === lang || elemLang.indexOf( lang + "-" ) === 0;
+					}
+				} while ( (elem = elem.parentNode) && elem.nodeType === 1 );
+				return false;
+			};
+		}),
+
+		// Miscellaneous
+		"target": function( elem ) {
+			var hash = window.location && window.location.hash;
+			return hash && hash.slice( 1 ) === elem.id;
+		},
+
+		"root": function( elem ) {
+			return elem === docElem;
+		},
+
+		"focus": function( elem ) {
+			return elem === document.activeElement && (!document.hasFocus || document.hasFocus()) && !!(elem.type || elem.href || ~elem.tabIndex);
+		},
+
+		// Boolean properties
+		"enabled": function( elem ) {
+			return elem.disabled === false;
+		},
+
+		"disabled": function( elem ) {
+			return elem.disabled === true;
+		},
+
+		"checked": function( elem ) {
+			// In CSS3, :checked should return both checked and selected elements
+			// http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked
+			var nodeName = elem.nodeName.toLowerCase();
+			return (nodeName === "input" && !!elem.checked) || (nodeName === "option" && !!elem.selected);
+		},
+
+		"selected": function( elem ) {
+			// Accessing this property makes selected-by-default
+			// options in Safari work properly
+			if ( elem.parentNode ) {
+				elem.parentNode.selectedIndex;
+			}
+
+			return elem.selected === true;
+		},
+
+		// Contents
+		"empty": function( elem ) {
+			// http://www.w3.org/TR/selectors/#empty-pseudo
+			// :empty is only affected by element nodes and content nodes(including text(3), cdata(4)),
+			//   not comment, processing instructions, or others
+			// Thanks to Diego Perini for the nodeName shortcut
+			//   Greater than "@" means alpha characters (specifically not starting with "#" or "?")
+			for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) {
+				if ( elem.nodeName > "@" || elem.nodeType === 3 || elem.nodeType === 4 ) {
+					return false;
+				}
+			}
+			return true;
+		},
+
+		"parent": function( elem ) {
+			return !Expr.pseudos["empty"]( elem );
+		},
+
+		// Element/input types
+		"header": function( elem ) {
+			return rheader.test( elem.nodeName );
+		},
+
+		"input": function( elem ) {
+			return rinputs.test( elem.nodeName );
+		},
+
+		"button": function( elem ) {
+			var name = elem.nodeName.toLowerCase();
+			return name === "input" && elem.type === "button" || name === "button";
+		},
+
+		"text": function( elem ) {
+			var attr;
+			// IE6 and 7 will map elem.type to 'text' for new HTML5 types (search, etc)
+			// use getAttribute instead to test this case
+			return elem.nodeName.toLowerCase() === "input" &&
+				elem.type === "text" &&
+				( (attr = elem.getAttribute("type")) == null || attr.toLowerCase() === elem.type );
+		},
+
+		// Position-in-collection
+		"first": createPositionalPseudo(function() {
+			return [ 0 ];
+		}),
+
+		"last": createPositionalPseudo(function( matchIndexes, length ) {
+			return [ length - 1 ];
+		}),
+
+		"eq": createPositionalPseudo(function( matchIndexes, length, argument ) {
+			return [ argument < 0 ? argument + length : argument ];
+		}),
+
+		"even": createPositionalPseudo(function( matchIndexes, length ) {
+			var i = 0;
+			for ( ; i < length; i += 2 ) {
+				matchIndexes.push( i );
+			}
+			return matchIndexes;
+		}),
+
+		"odd": createPositionalPseudo(function( matchIndexes, length ) {
+			var i = 1;
+			for ( ; i < length; i += 2 ) {
+				matchIndexes.push( i );
+			}
+			return matchIndexes;
+		}),
+
+		"lt": createPositionalPseudo(function( matchIndexes, length, argument ) {
+			var i = argument < 0 ? argument + length : argument;
+			for ( ; --i >= 0; ) {
+				matchIndexes.push( i );
+			}
+			return matchIndexes;
+		}),
+
+		"gt": createPositionalPseudo(function( matchIndexes, length, argument ) {
+			var i = argument < 0 ? argument + length : argument;
+			for ( ; ++i < length; ) {
+				matchIndexes.push( i );
+			}
+			return matchIndexes;
+		})
+	}
+};
+
+Expr.pseudos["nth"] = Expr.pseudos["eq"];
+
+// Add button/input type pseudos
+for ( i in { radio: true, checkbox: true, file: true, password: true, image: true } ) {
+	Expr.pseudos[ i ] = createInputPseudo( i );
+}
+for ( i in { submit: true, reset: true } ) {
+	Expr.pseudos[ i ] = createButtonPseudo( i );
+}
+
+// Easy API for creating new setFilters
+function setFilters() {}
+setFilters.prototype = Expr.filters = Expr.pseudos;
+Expr.setFilters = new setFilters();
+
+function tokenize( selector, parseOnly ) {
+	var matched, match, tokens, type,
+		soFar, groups, preFilters,
+		cached = tokenCache[ selector + " " ];
+
+	if ( cached ) {
+		return parseOnly ? 0 : cached.slice( 0 );
+	}
+
+	soFar = selector;
+	groups = [];
+	preFilters = Expr.preFilter;
+
+	while ( soFar ) {
+
+		// Comma and first run
+		if ( !matched || (match = rcomma.exec( soFar )) ) {
+			if ( match ) {
+				// Don't consume trailing commas as valid
+				soFar = soFar.slice( match[0].length ) || soFar;
+			}
+			groups.push( tokens = [] );
+		}
+
+		matched = false;
+
+		// Combinators
+		if ( (match = rcombinators.exec( soFar )) ) {
+			matched = match.shift();
+			tokens.push({
+				value: matched,
+				// Cast descendant combinators to space
+				type: match[0].replace( rtrim, " " )
+			});
+			soFar = soFar.slice( matched.length );
+		}
+
+		// Filters
+		for ( type in Expr.filter ) {
+			if ( (match = matchExpr[ type ].exec( soFar )) && (!preFilters[ type ] ||
+				(match = preFilters[ type ]( match ))) ) {
+				matched = match.shift();
+				tokens.push({
+					value: matched,
+					type: type,
+					matches: match
+				});
+				soFar = soFar.slice( matched.length );
+			}
+		}
+
+		if ( !matched ) {
+			break;
+		}
+	}
+
+	// Return the length of the invalid excess
+	// if we're just parsing
+	// Otherwise, throw an error or return tokens
+	return parseOnly ?
+		soFar.length :
+		soFar ?
+			Sizzle.error( selector ) :
+			// Cache the tokens
+			tokenCache( selector, groups ).slice( 0 );
+}
+
+function toSelector( tokens ) {
+	var i = 0,
+		len = tokens.length,
+		selector = "";
+	for ( ; i < len; i++ ) {
+		selector += tokens[i].value;
+	}
+	return selector;
+}
+
+function addCombinator( matcher, combinator, base ) {
+	var dir = combinator.dir,
+		checkNonElements = base && dir === "parentNode",
+		doneName = done++;
+
+	return combinator.first ?
+		// Check against closest ancestor/preceding element
+		function( elem, context, xml ) {
+			while ( (elem = elem[ dir ]) ) {
+				if ( elem.nodeType === 1 || checkNonElements ) {
+					return matcher( elem, context, xml );
+				}
+			}
+		} :
+
+		// Check against all ancestor/preceding elements
+		function( elem, context, xml ) {
+			var data, cache, outerCache,
+				dirkey = dirruns + " " + doneName;
+
+			// We can't set arbitrary data on XML nodes, so they don't benefit from dir caching
+			if ( xml ) {
+				while ( (elem = elem[ dir ]) ) {
+					if ( elem.nodeType === 1 || checkNonElements ) {
+						if ( matcher( elem, context, xml ) ) {
+							return true;
+						}
+					}
+				}
+			} else {
+				while ( (elem = elem[ dir ]) ) {
+					if ( elem.nodeType === 1 || checkNonElements ) {
+						outerCache = elem[ expando ] || (elem[ expando ] = {});
+						if ( (cache = outerCache[ dir ]) && cache[0] === dirkey ) {
+							if ( (data = cache[1]) === true || data === cachedruns ) {
+								return data === true;
+							}
+						} else {
+							cache = outerCache[ dir ] = [ dirkey ];
+							cache[1] = matcher( elem, context, xml ) || cachedruns;
+							if ( cache[1] === true ) {
+								return true;
+							}
+						}
+					}
+				}
+			}
+		};
+}
+
+function elementMatcher( matchers ) {
+	return matchers.length > 1 ?
+		function( elem, context, xml ) {
+			var i = matchers.length;
+			while ( i-- ) {
+				if ( !matchers[i]( elem, context, xml ) ) {
+					return false;
+				}
+			}
+			return true;
+		} :
+		matchers[0];
+}
+
+function condense( unmatched, map, filter, context, xml ) {
+	var elem,
+		newUnmatched = [],
+		i = 0,
+		len = unmatched.length,
+		mapped = map != null;
+
+	for ( ; i < len; i++ ) {
+		if ( (elem = unmatched[i]) ) {
+			if ( !filter || filter( elem, context, xml ) ) {
+				newUnmatched.push( elem );
+				if ( mapped ) {
+					map.push( i );
+				}
+			}
+		}
+	}
+
+	return newUnmatched;
+}
+
+function setMatcher( preFilter, selector, matcher, postFilter, postFinder, postSelector ) {
+	if ( postFilter && !postFilter[ expando ] ) {
+		postFilter = setMatcher( postFilter );
+	}
+	if ( postFinder && !postFinder[ expando ] ) {
+		postFinder = setMatcher( postFinder, postSelector );
+	}
+	return markFunction(function( seed, results, context, xml ) {
+		var temp, i, elem,
+			preMap = [],
+			postMap = [],
+			preexisting = results.length,
+
+			// Get initial elements from seed or context
+			elems = seed || multipleContexts( selector || "*", context.nodeType ? [ context ] : context, [] ),
+
+			// Prefilter to get matcher input, preserving a map for seed-results synchronization
+			matcherIn = preFilter && ( seed || !selector ) ?
+				condense( elems, preMap, preFilter, context, xml ) :
+				elems,
+
+			matcherOut = matcher ?
+				// If we have a postFinder, or filtered seed, or non-seed postFilter or preexisting results,
+				postFinder || ( seed ? preFilter : preexisting || postFilter ) ?
+
+					// ...intermediate processing is necessary
+					[] :
+
+					// ...otherwise use results directly
+					results :
+				matcherIn;
+
+		// Find primary matches
+		if ( matcher ) {
+			matcher( matcherIn, matcherOut, context, xml );
+		}
+
+		// Apply postFilter
+		if ( postFilter ) {
+			temp = condense( matcherOut, postMap );
+			postFilter( temp, [], context, xml );
+
+			// Un-match failing elements by moving them back to matcherIn
+			i = temp.length;
+			while ( i-- ) {
+				if ( (elem = temp[i]) ) {
+					matcherOut[ postMap[i] ] = !(matcherIn[ postMap[i] ] = elem);
+				}
+			}
+		}
+
+		if ( seed ) {
+			if ( postFinder || preFilter ) {
+				if ( postFinder ) {
+					// Get the final matcherOut by condensing this intermediate into postFinder contexts
+					temp = [];
+					i = matcherOut.length;
+					while ( i-- ) {
+						if ( (elem = matcherOut[i]) ) {
+							// Restore matcherIn since elem is not yet a final match
+							temp.push( (matcherIn[i] = elem) );
+						}
+					}
+					postFinder( null, (matcherOut = []), temp, xml );
+				}
+
+				// Move matched elements from seed to results to keep them synchronized
+				i = matcherOut.length;
+				while ( i-- ) {
+					if ( (elem = matcherOut[i]) &&
+						(temp = postFinder ? indexOf.call( seed, elem ) : preMap[i]) > -1 ) {
+
+						seed[temp] = !(results[temp] = elem);
+					}
+				}
+			}
+
+		// Add elements to results, through postFinder if defined
+		} else {
+			matcherOut = condense(
+				matcherOut === results ?
+					matcherOut.splice( preexisting, matcherOut.length ) :
+					matcherOut
+			);
+			if ( postFinder ) {
+				postFinder( null, results, matcherOut, xml );
+			} else {
+				push.apply( results, matcherOut );
+			}
+		}
+	});
+}
+
+function matcherFromTokens( tokens ) {
+	var checkContext, matcher, j,
+		len = tokens.length,
+		leadingRelative = Expr.relative[ tokens[0].type ],
+		implicitRelative = leadingRelative || Expr.relative[" "],
+		i = leadingRelative ? 1 : 0,
+
+		// The foundational matcher ensures that elements are reachable from top-level context(s)
+		matchContext = addCombinator( function( elem ) {
+			return elem === checkContext;
+		}, implicitRelative, true ),
+		matchAnyContext = addCombinator( function( elem ) {
+			return indexOf.call( checkContext, elem ) > -1;
+		}, implicitRelative, true ),
+		matchers = [ function( elem, context, xml ) {
+			return ( !leadingRelative && ( xml || context !== outermostContext ) ) || (
+				(checkContext = context).nodeType ?
+					matchContext( elem, context, xml ) :
+					matchAnyContext( elem, context, xml ) );
+		} ];
+
+	for ( ; i < len; i++ ) {
+		if ( (matcher = Expr.relative[ tokens[i].type ]) ) {
+			matchers = [ addCombinator(elementMatcher( matchers ), matcher) ];
+		} else {
+			matcher = Expr.filter[ tokens[i].type ].apply( null, tokens[i].matches );
+
+			// Return special upon seeing a positional matcher
+			if ( matcher[ expando ] ) {
+				// Find the next relative operator (if any) for proper handling
+				j = ++i;
+				for ( ; j < len; j++ ) {
+					if ( Expr.relative[ tokens[j].type ] ) {
+						break;
+					}
+				}
+				return setMatcher(
+					i > 1 && elementMatcher( matchers ),
+					i > 1 && toSelector(
+						// If the preceding token was a descendant combinator, insert an implicit any-element `*`
+						tokens.slice( 0, i - 1 ).concat({ value: tokens[ i - 2 ].type === " " ? "*" : "" })
+					).replace( rtrim, "$1" ),
+					matcher,
+					i < j && matcherFromTokens( tokens.slice( i, j ) ),
+					j < len && matcherFromTokens( (tokens = tokens.slice( j )) ),
+					j < len && toSelector( tokens )
+				);
+			}
+			matchers.push( matcher );
+		}
+	}
+
+	return elementMatcher( matchers );
+}
+
+function matcherFromGroupMatchers( elementMatchers, setMatchers ) {
+	// A counter to specify which element is currently being matched
+	var matcherCachedRuns = 0,
+		bySet = setMatchers.length > 0,
+		byElement = elementMatchers.length > 0,
+		superMatcher = function( seed, context, xml, results, expandContext ) {
+			var elem, j, matcher,
+				setMatched = [],
+				matchedCount = 0,
+				i = "0",
+				unmatched = seed && [],
+				outermost = expandContext != null,
+				contextBackup = outermostContext,
+				// We must always have either seed elements or context
+				elems = seed || byElement && Expr.find["TAG"]( "*", expandContext && context.parentNode || context ),
+				// Use integer dirruns iff this is the outermost matcher
+				dirrunsUnique = (dirruns += contextBackup == null ? 1 : Math.random() || 0.1);
+
+			if ( outermost ) {
+				outermostContext = context !== document && context;
+				cachedruns = matcherCachedRuns;
+			}
+
+			// Add elements passing elementMatchers directly to results
+			// Keep `i` a string if there are no elements so `matchedCount` will be "00" below
+			for ( ; (elem = elems[i]) != null; i++ ) {
+				if ( byElement && elem ) {
+					j = 0;
+					while ( (matcher = elementMatchers[j++]) ) {
+						if ( matcher( elem, context, xml ) ) {
+							results.push( elem );
+							break;
+						}
+					}
+					if ( outermost ) {
+						dirruns = dirrunsUnique;
+						cachedruns = ++matcherCachedRuns;
+					}
+				}
+
+				// Track unmatched elements for set filters
+				if ( bySet ) {
+					// They will have gone through all possible matchers
+					if ( (elem = !matcher && elem) ) {
+						matchedCount--;
+					}
+
+					// Lengthen the array for every element, matched or not
+					if ( seed ) {
+						unmatched.push( elem );
+					}
+				}
+			}
+
+			// Apply set filters to unmatched elements
+			matchedCount += i;
+			if ( bySet && i !== matchedCount ) {
+				j = 0;
+				while ( (matcher = setMatchers[j++]) ) {
+					matcher( unmatched, setMatched, context, xml );
+				}
+
+				if ( seed ) {
+					// Reintegrate element matches to eliminate the need for sorting
+					if ( matchedCount > 0 ) {
+						while ( i-- ) {
+							if ( !(unmatched[i] || setMatched[i]) ) {
+								setMatched[i] = pop.call( results );
+							}
+						}
+					}
+
+					// Discard index placeholder values to get only actual matches
+					setMatched = condense( setMatched );
+				}
+
+				// Add matches to results
+				push.apply( results, setMatched );
+
+				// Seedless set matches succeeding multiple successful matchers stipulate sorting
+				if ( outermost && !seed && setMatched.length > 0 &&
+					( matchedCount + setMatchers.length ) > 1 ) {
+
+					Sizzle.uniqueSort( results );
+				}
+			}
+
+			// Override manipulation of globals by nested matchers
+			if ( outermost ) {
+				dirruns = dirrunsUnique;
+				outermostContext = contextBackup;
+			}
+
+			return unmatched;
+		};
+
+	return bySet ?
+		markFunction( superMatcher ) :
+		superMatcher;
+}
+
+compile = Sizzle.compile = function( selector, group /* Internal Use Only */ ) {
+	var i,
+		setMatchers = [],
+		elementMatchers = [],
+		cached = compilerCache[ selector + " " ];
+
+	if ( !cached ) {
+		// Generate a function of recursive functions that can be used to check each element
+		if ( !group ) {
+			group = tokenize( selector );
+		}
+		i = group.length;
+		while ( i-- ) {
+			cached = matcherFromTokens( group[i] );
+			if ( cached[ expando ] ) {
+				setMatchers.push( cached );
+			} else {
+				elementMatchers.push( cached );
+			}
+		}
+
+		// Cache the compiled function
+		cached = compilerCache( selector, matcherFromGroupMatchers( elementMatchers, setMatchers ) );
+	}
+	return cached;
+};
+
+function multipleContexts( selector, contexts, results ) {
+	var i = 0,
+		len = contexts.length;
+	for ( ; i < len; i++ ) {
+		Sizzle( selector, contexts[i], results );
+	}
+	return results;
+}
+
+function select( selector, context, results, seed ) {
+	var i, tokens, token, type, find,
+		match = tokenize( selector );
+
+	if ( !seed ) {
+		// Try to minimize operations if there is only one group
+		if ( match.length === 1 ) {
+
+			// Take a shortcut and set the context if the root selector is an ID
+			tokens = match[0] = match[0].slice( 0 );
+			if ( tokens.length > 2 && (token = tokens[0]).type === "ID" &&
+					support.getById && context.nodeType === 9 && documentIsHTML &&
+					Expr.relative[ tokens[1].type ] ) {
+
+				context = ( Expr.find["ID"]( token.matches[0].replace(runescape, funescape), context ) || [] )[0];
+				if ( !context ) {
+					return results;
+				}
+				selector = selector.slice( tokens.shift().value.length );
+			}
+
+			// Fetch a seed set for right-to-left matching
+			i = matchExpr["needsContext"].test( selector ) ? 0 : tokens.length;
+			while ( i-- ) {
+				token = tokens[i];
+
+				// Abort if we hit a combinator
+				if ( Expr.relative[ (type = token.type) ] ) {
+					break;
+				}
+				if ( (find = Expr.find[ type ]) ) {
+					// Search, expanding context for leading sibling combinators
+					if ( (seed = find(
+						token.matches[0].replace( runescape, funescape ),
+						rsibling.test( tokens[0].type ) && context.parentNode || context
+					)) ) {
+
+						// If seed is empty or no tokens remain, we can return early
+						tokens.splice( i, 1 );
+						selector = seed.length && toSelector( tokens );
+						if ( !selector ) {
+							push.apply( results, seed );
+							return results;
+						}
+
+						break;
+					}
+				}
+			}
+		}
+	}
+
+	// Compile and execute a filtering function
+	// Provide `match` to avoid retokenization if we modified the selector above
+	compile( selector, match )(
+		seed,
+		context,
+		!documentIsHTML,
+		results,
+		rsibling.test( selector )
+	);
+	return results;
+}
+
+// One-time assignments
+
+// Sort stability
+support.sortStable = expando.split("").sort( sortOrder ).join("") === expando;
+
+// Support: Chrome<14
+// Always assume duplicates if they aren't passed to the comparison function
+support.detectDuplicates = hasDuplicate;
+
+// Initialize against the default document
+setDocument();
+
+// Support: Webkit<537.32 - Safari 6.0.3/Chrome 25 (fixed in Chrome 27)
+// Detached nodes confoundingly follow *each other*
+support.sortDetached = assert(function( div1 ) {
+	// Should return 1, but returns 4 (following)
+	return div1.compareDocumentPosition( document.createElement("div") ) & 1;
+});
+
+// Support: IE<8
+// Prevent attribute/property "interpolation"
+// http://msdn.microsoft.com/en-us/library/ms536429%28VS.85%29.aspx
+if ( !assert(function( div ) {
+	div.innerHTML = "<a href='#'></a>";
+	return div.firstChild.getAttribute("href") === "#" ;
+}) ) {
+	addHandle( "type|href|height|width", function( elem, name, isXML ) {
+		if ( !isXML ) {
+			return elem.getAttribute( name, name.toLowerCase() === "type" ? 1 : 2 );
+		}
+	});
+}
+
+// Support: IE<9
+// Use defaultValue in place of getAttribute("value")
+if ( !support.attributes || !assert(function( div ) {
+	div.innerHTML = "<input/>";
+	div.firstChild.setAttribute( "value", "" );
+	return div.firstChild.getAttribute( "value" ) === "";
+}) ) {
+	addHandle( "value", function( elem, name, isXML ) {
+		if ( !isXML && elem.nodeName.toLowerCase() === "input" ) {
+			return elem.defaultValue;
+		}
+	});
+}
+
+// Support: IE<9
+// Use getAttributeNode to fetch booleans when getAttribute lies
+if ( !assert(function( div ) {
+	return div.getAttribute("disabled") == null;
+}) ) {
+	addHandle( booleans, function( elem, name, isXML ) {
+		var val;
+		if ( !isXML ) {
+			return (val = elem.getAttributeNode( name )) && val.specified ?
+				val.value :
+				elem[ name ] === true ? name.toLowerCase() : null;
+		}
+	});
+}
+
+jQuery.find = Sizzle;
+jQuery.expr = Sizzle.selectors;
+jQuery.expr[":"] = jQuery.expr.pseudos;
+jQuery.unique = Sizzle.uniqueSort;
+jQuery.text = Sizzle.getText;
+jQuery.isXMLDoc = Sizzle.isXML;
+jQuery.contains = Sizzle.contains;
+
+
+})( window );
+// String to Object options format cache
+var optionsCache = {};
+
+// Convert String-formatted options into Object-formatted ones and store in cache
+function createOptions( options ) {
+	var object = optionsCache[ options ] = {};
+	jQuery.each( options.match( core_rnotwhite ) || [], function( _, flag ) {
+		object[ flag ] = true;
+	});
+	return object;
+}
+
+/*
+ * Create a callback list using the following parameters:
+ *
+ *	options: an optional list of space-separated options that will change how
+ *			the callback list behaves or a more traditional option object
+ *
+ * By default a callback list will act like an event callback list and can be
+ * "fired" multiple times.
+ *
+ * Possible options:
+ *
+ *	once:			will ensure the callback list can only be fired once (like a Deferred)
+ *
+ *	memory:			will keep track of previous values and will call any callback added
+ *					after the list has been fired right away with the latest "memorized"
+ *					values (like a Deferred)
+ *
+ *	unique:			will ensure a callback can only be added once (no duplicate in the list)
+ *
+ *	stopOnFalse:	interrupt callings when a callback returns false
+ *
+ */
+jQuery.Callbacks = function( options ) {
+
+	// Convert options from String-formatted to Object-formatted if needed
+	// (we check in cache first)
+	options = typeof options === "string" ?
+		( optionsCache[ options ] || createOptions( options ) ) :
+		jQuery.extend( {}, options );
+
+	var // Last fire value (for non-forgettable lists)
+		memory,
+		// Flag to know if list was already fired
+		fired,
+		// Flag to know if list is currently firing
+		firing,
+		// First callback to fire (used internally by add and fireWith)
+		firingStart,
+		// End of the loop when firing
+		firingLength,
+		// Index of currently firing callback (modified by remove if needed)
+		firingIndex,
+		// Actual callback list
+		list = [],
+		// Stack of fire calls for repeatable lists
+		stack = !options.once && [],
+		// Fire callbacks
+		fire = function( data ) {
+			memory = options.memory && data;
+			fired = true;
+			firingIndex = firingStart || 0;
+			firingStart = 0;
+			firingLength = list.length;
+			firing = true;
+			for ( ; list && firingIndex < firingLength; firingIndex++ ) {
+				if ( list[ firingIndex ].apply( data[ 0 ], data[ 1 ] ) === false && options.stopOnFalse ) {
+					memory = false; // To prevent further calls using add
+					break;
+				}
+			}
+			firing = false;
+			if ( list ) {
+				if ( stack ) {
+					if ( stack.length ) {
+						fire( stack.shift() );
+					}
+				} else if ( memory ) {
+					list = [];
+				} else {
+					self.disable();
+				}
+			}
+		},
+		// Actual Callbacks object
+		self = {
+			// Add a callback or a collection of callbacks to the list
+			add: function() {
+				if ( list ) {
+					// First, we save the current length
+					var start = list.length;
+					(function add( args ) {
+						jQuery.each( args, function( _, arg ) {
+							var type = jQuery.type( arg );
+							if ( type === "function" ) {
+								if ( !options.unique || !self.has( arg ) ) {
+									list.push( arg );
+								}
+							} else if ( arg && arg.length && type !== "string" ) {
+								// Inspect recursively
+								add( arg );
+							}
+						});
+					})( arguments );
+					// Do we need to add the callbacks to the
+					// current firing batch?
+					if ( firing ) {
+						firingLength = list.length;
+					// With memory, if we're not firing then
+					// we should call right away
+					} else if ( memory ) {
+						firingStart = start;
+						fire( memory );
+					}
+				}
+				return this;
+			},
+			// Remove a callback from the list
+			remove: function() {
+				if ( list ) {
+					jQuery.each( arguments, function( _, arg ) {
+						var index;
+						while( ( index = jQuery.inArray( arg, list, index ) ) > -1 ) {
+							list.splice( index, 1 );
+							// Handle firing indexes
+							if ( firing ) {
+								if ( index <= firingLength ) {
+									firingLength--;
+								}
+								if ( index <= firingIndex ) {
+									firingIndex--;
+								}
+							}
+						}
+					});
+				}
+				return this;
+			},
+			// Check if a given callback is in the list.
+			// If no argument is given, return whether or not list has callbacks attached.
+			has: function( fn ) {
+				return fn ? jQuery.inArray( fn, list ) > -1 : !!( list && list.length );
+			},
+			// Remove all callbacks from the list
+			empty: function() {
+				list = [];
+				firingLength = 0;
+				return this;
+			},
+			// Have the list do nothing anymore
+			disable: function() {
+				list = stack = memory = undefined;
+				return this;
+			},
+			// Is it disabled?
+			disabled: function() {
+				return !list;
+			},
+			// Lock the list in its current state
+			lock: function() {
+				stack = undefined;
+				if ( !memory ) {
+					self.disable();
+				}
+				return this;
+			},
+			// Is it locked?
+			locked: function() {
+				return !stack;
+			},
+			// Call all callbacks with the given context and arguments
+			fireWith: function( context, args ) {
+				if ( list && ( !fired || stack ) ) {
+					args = args || [];
+					args = [ context, args.slice ? args.slice() : args ];
+					if ( firing ) {
+						stack.push( args );
+					} else {
+						fire( args );
+					}
+				}
+				return this;
+			},
+			// Call all the callbacks with the given arguments
+			fire: function() {
+				self.fireWith( this, arguments );
+				return this;
+			},
+			// To know if the callbacks have already been called at least once
+			fired: function() {
+				return !!fired;
+			}
+		};
+
+	return self;
+};
+jQuery.extend({
+
+	Deferred: function( func ) {
+		var tuples = [
+				// action, add listener, listener list, final state
+				[ "resolve", "done", jQuery.Callbacks("once memory"), "resolved" ],
+				[ "reject", "fail", jQuery.Callbacks("once memory"), "rejected" ],
+				[ "notify", "progress", jQuery.Callbacks("memory") ]
+			],
+			state = "pending",
+			promise = {
+				state: function() {
+					return state;
+				},
+				always: function() {
+					deferred.done( arguments ).fail( arguments );
+					return this;
+				},
+				then: function( /* fnDone, fnFail, fnProgress */ ) {
+					var fns = arguments;
+					return jQuery.Deferred(function( newDefer ) {
+						jQuery.each( tuples, function( i, tuple ) {
+							var action = tuple[ 0 ],
+								fn = jQuery.isFunction( fns[ i ] ) && fns[ i ];
+							// deferred[ done | fail | progress ] for forwarding actions to newDefer
+							deferred[ tuple[1] ](function() {
+								var returned = fn && fn.apply( this, arguments );
+								if ( returned && jQuery.isFunction( returned.promise ) ) {
+									returned.promise()
+										.done( newDefer.resolve )
+										.fail( newDefer.reject )
+										.progress( newDefer.notify );
+								} else {
+									newDefer[ action + "With" ]( this === promise ? newDefer.promise() : this, fn ? [ returned ] : arguments );
+								}
+							});
+						});
+						fns = null;
+					}).promise();
+				},
+				// Get a promise for this deferred
+				// If obj is provided, the promise aspect is added to the object
+				promise: function( obj ) {
+					return obj != null ? jQuery.extend( obj, promise ) : promise;
+				}
+			},
+			deferred = {};
+
+		// Keep pipe for back-compat
+		promise.pipe = promise.then;
+
+		// Add list-specific methods
+		jQuery.each( tuples, function( i, tuple ) {
+			var list = tuple[ 2 ],
+				stateString = tuple[ 3 ];
+
+			// promise[ done | fail | progress ] = list.add
+			promise[ tuple[1] ] = list.add;
+
+			// Handle state
+			if ( stateString ) {
+				list.add(function() {
+					// state = [ resolved | rejected ]
+					state = stateString;
+
+				// [ reject_list | resolve_list ].disable; progress_list.lock
+				}, tuples[ i ^ 1 ][ 2 ].disable, tuples[ 2 ][ 2 ].lock );
+			}
+
+			// deferred[ resolve | reject | notify ]
+			deferred[ tuple[0] ] = function() {
+				deferred[ tuple[0] + "With" ]( this === deferred ? promise : this, arguments );
+				return this;
+			};
+			deferred[ tuple[0] + "With" ] = list.fireWith;
+		});
+
+		// Make the deferred a promise
+		promise.promise( deferred );
+
+		// Call given func if any
+		if ( func ) {
+			func.call( deferred, deferred );
+		}
+
+		// All done!
+		return deferred;
+	},
+
+	// Deferred helper
+	when: function( subordinate /* , ..., subordinateN */ ) {
+		var i = 0,
+			resolveValues = core_slice.call( arguments ),
+			length = resolveValues.length,
+
+			// the count of uncompleted subordinates
+			remaining = length !== 1 || ( subordinate && jQuery.isFunction( subordinate.promise ) ) ? length : 0,
+
+			// the master Deferred. If resolveValues consist of only a single Deferred, just use that.
+			deferred = remaining === 1 ? subordinate : jQuery.Deferred(),
+
+			// Update function for both resolve and progress values
+			updateFunc = function( i, contexts, values ) {
+				return function( value ) {
+					contexts[ i ] = this;
+					values[ i ] = arguments.length > 1 ? core_slice.call( arguments ) : value;
+					if( values === progressValues ) {
+						deferred.notifyWith( contexts, values );
+					} else if ( !( --remaining ) ) {
+						deferred.resolveWith( contexts, values );
+					}
+				};
+			},
+
+			progressValues, progressContexts, resolveContexts;
+
+		// add listeners to Deferred subordinates; treat others as resolved
+		if ( length > 1 ) {
+			progressValues = new Array( length );
+			progressContexts = new Array( length );
+			resolveContexts = new Array( length );
+			for ( ; i < length; i++ ) {
+				if ( resolveValues[ i ] && jQuery.isFunction( resolveValues[ i ].promise ) ) {
+					resolveValues[ i ].promise()
+						.done( updateFunc( i, resolveContexts, resolveValues ) )
+						.fail( deferred.reject )
+						.progress( updateFunc( i, progressContexts, progressValues ) );
+				} else {
+					--remaining;
+				}
+			}
+		}
+
+		// if we're not waiting on anything, resolve the master
+		if ( !remaining ) {
+			deferred.resolveWith( resolveContexts, resolveValues );
+		}
+
+		return deferred.promise();
+	}
+});
+jQuery.support = (function( support ) {
+	var input = document.createElement("input"),
+		fragment = document.createDocumentFragment(),
+		div = document.createElement("div"),
+		select = document.createElement("select"),
+		opt = select.appendChild( document.createElement("option") );
+
+	// Finish early in limited environments
+	if ( !input.type ) {
+		return support;
+	}
+
+	input.type = "checkbox";
+
+	// Support: Safari 5.1, iOS 5.1, Android 4.x, Android 2.3
+	// Check the default checkbox/radio value ("" on old WebKit; "on" elsewhere)
+	support.checkOn = input.value !== "";
+
+	// Must access the parent to make an option select properly
+	// Support: IE9, IE10
+	support.optSelected = opt.selected;
+
+	// Will be defined later
+	support.reliableMarginRight = true;
+	support.boxSizingReliable = true;
+	support.pixelPosition = false;
+
+	// Make sure checked status is properly cloned
+	// Support: IE9, IE10
+	input.checked = true;
+	support.noCloneChecked = input.cloneNode( true ).checked;
+
+	// Make sure that the options inside disabled selects aren't marked as disabled
+	// (WebKit marks them as disabled)
+	select.disabled = true;
+	support.optDisabled = !opt.disabled;
+
+	// Check if an input maintains its value after becoming a radio
+	// Support: IE9, IE10
+	input = document.createElement("input");
+	input.value = "t";
+	input.type = "radio";
+	support.radioValue = input.value === "t";
+
+	// #11217 - WebKit loses check when the name is after the checked attribute
+	input.setAttribute( "checked", "t" );
+	input.setAttribute( "name", "t" );
+
+	fragment.appendChild( input );
+
+	// Support: Safari 5.1, Android 4.x, Android 2.3
+	// old WebKit doesn't clone checked state correctly in fragments
+	support.checkClone = fragment.cloneNode( true ).cloneNode( true ).lastChild.checked;
+
+	// Support: Firefox, Chrome, Safari
+	// Beware of CSP restrictions (https://developer.mozilla.org/en/Security/CSP)
+	support.focusinBubbles = "onfocusin" in window;
+
+	div.style.backgroundClip = "content-box";
+	div.cloneNode( true ).style.backgroundClip = "";
+	support.clearCloneStyle = div.style.backgroundClip === "content-box";
+
+	// Run tests that need a body at doc ready
+	jQuery(function() {
+		var container, marginDiv,
+			// Support: Firefox, Android 2.3 (Prefixed box-sizing versions).
+			divReset = "padding:0;margin:0;border:0;display:block;-webkit-box-sizing:content-box;-moz-box-sizing:content-box;box-sizing:content-box",
+			body = document.getElementsByTagName("body")[ 0 ];
+
+		if ( !body ) {
+			// Return for frameset docs that don't have a body
+			return;
+		}
+
+		container = document.createElement("div");
+		container.style.cssText = "border:0;width:0;height:0;position:absolute;top:0;left:-9999px;margin-top:1px";
+
+		// Check box-sizing and margin behavior.
+		body.appendChild( container ).appendChild( div );
+		div.innerHTML = "";
+		// Support: Firefox, Android 2.3 (Prefixed box-sizing versions).
+		div.style.cssText = "-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;padding:1px;border:1px;display:block;width:4px;margin-top:1%;position:absolute;top:1%";
+
+		// Workaround failing boxSizing test due to offsetWidth returning wrong value
+		// with some non-1 values of body zoom, ticket #13543
+		jQuery.swap( body, body.style.zoom != null ? { zoom: 1 } : {}, function() {
+			support.boxSizing = div.offsetWidth === 4;
+		});
+
+		// Use window.getComputedStyle because jsdom on node.js will break without it.
+		if ( window.getComputedStyle ) {
+			support.pixelPosition = ( window.getComputedStyle( div, null ) || {} ).top !== "1%";
+			support.boxSizingReliable = ( window.getComputedStyle( div, null ) || { width: "4px" } ).width === "4px";
+
+			// Support: Android 2.3
+			// Check if div with explicit width and no margin-right incorrectly
+			// gets computed margin-right based on width of container. (#3333)
+			// WebKit Bug 13343 - getComputedStyle returns wrong value for margin-right
+			marginDiv = div.appendChild( document.createElement("div") );
+			marginDiv.style.cssText = div.style.cssText = divReset;
+			marginDiv.style.marginRight = marginDiv.style.width = "0";
+			div.style.width = "1px";
+
+			support.reliableMarginRight =
+				!parseFloat( ( window.getComputedStyle( marginDiv, null ) || {} ).marginRight );
+		}
+
+		body.removeChild( container );
+	});
+
+	return support;
+})( {} );
+
+/*
+	Implementation Summary
+
+	1. Enforce API surface and semantic compatibility with 1.9.x branch
+	2. Improve the module's maintainability by reducing the storage
+		paths to a single mechanism.
+	3. Use the same single mechanism to support "private" and "user" data.
+	4. _Never_ expose "private" data to user code (TODO: Drop _data, _removeData)
+	5. Avoid exposing implementation details on user objects (eg. expando properties)
+	6. Provide a clear path for implementation upgrade to WeakMap in 2014
+*/
+var data_user, data_priv,
+	rbrace = /(?:\{[\s\S]*\}|\[[\s\S]*\])$/,
+	rmultiDash = /([A-Z])/g;
+
+function Data() {
+	// Support: Android < 4,
+	// Old WebKit does not have Object.preventExtensions/freeze method,
+	// return new empty object instead with no [[set]] accessor
+	Object.defineProperty( this.cache = {}, 0, {
+		get: function() {
+			return {};
+		}
+	});
+
+	this.expando = jQuery.expando + Math.random();
+}
+
+Data.uid = 1;
+
+Data.accepts = function( owner ) {
+	// Accepts only:
+	//  - Node
+	//    - Node.ELEMENT_NODE
+	//    - Node.DOCUMENT_NODE
+	//  - Object
+	//    - Any
+	return owner.nodeType ?
+		owner.nodeType === 1 || owner.nodeType === 9 : true;
+};
+
+Data.prototype = {
+	key: function( owner ) {
+		// We can accept data for non-element nodes in modern browsers,
+		// but we should not, see #8335.
+		// Always return the key for a frozen object.
+		if ( !Data.accepts( owner ) ) {
+			return 0;
+		}
+
+		var descriptor = {},
+			// Check if the owner object already has a cache key
+			unlock = owner[ this.expando ];
+
+		// If not, create one
+		if ( !unlock ) {
+			unlock = Data.uid++;
+
+			// Secure it in a non-enumerable, non-writable property
+			try {
+				descriptor[ this.expando ] = { value: unlock };
+				Object.defineProperties( owner, descriptor );
+
+			// Support: Android < 4
+			// Fallback to a less secure definition
+			} catch ( e ) {
+				descriptor[ this.expando ] = unlock;
+				jQuery.extend( owner, descriptor );
+			}
+		}
+
+		// Ensure the cache object
+		if ( !this.cache[ unlock ] ) {
+			this.cache[ unlock ] = {};
+		}
+
+		return unlock;
+	},
+	set: function( owner, data, value ) {
+		var prop,
+			// There may be an unlock assigned to this node,
+			// if there is no entry for this "owner", create one inline
+			// and set the unlock as though an owner entry had always existed
+			unlock = this.key( owner ),
+			cache = this.cache[ unlock ];
+
+		// Handle: [ owner, key, value ] args
+		if ( typeof data === "string" ) {
+			cache[ data ] = value;
+
+		// Handle: [ owner, { properties } ] args
+		} else {
+			// Fresh assignments by object are shallow copied
+			if ( jQuery.isEmptyObject( cache ) ) {
+				jQuery.extend( this.cache[ unlock ], data );
+			// Otherwise, copy the properties one-by-one to the cache object
+			} else {
+				for ( prop in data ) {
+					cache[ prop ] = data[ prop ];
+				}
+			}
+		}
+		return cache;
+	},
+	get: function( owner, key ) {
+		// Either a valid cache is found, or will be created.
+		// New caches will be created and the unlock returned,
+		// allowing direct access to the newly created
+		// empty data object. A valid owner object must be provided.
+		var cache = this.cache[ this.key( owner ) ];
+
+		return key === undefined ?
+			cache : cache[ key ];
+	},
+	access: function( owner, key, value ) {
+		var stored;
+		// In cases where either:
+		//
+		//   1. No key was specified
+		//   2. A string key was specified, but no value provided
+		//
+		// Take the "read" path and allow the get method to determine
+		// which value to return, respectively either:
+		//
+		//   1. The entire cache object
+		//   2. The data stored at the key
+		//
+		if ( key === undefined ||
+				((key && typeof key === "string") && value === undefined) ) {
+
+			stored = this.get( owner, key );
+
+			return stored !== undefined ?
+				stored : this.get( owner, jQuery.camelCase(key) );
+		}
+
+		// [*]When the key is not a string, or both a key and value
+		// are specified, set or extend (existing objects) with either:
+		//
+		//   1. An object of properties
+		//   2. A key and value
+		//
+		this.set( owner, key, value );
+
+		// Since the "set" path can have two possible entry points
+		// return the expected data based on which path was taken[*]
+		return value !== undefined ? value : key;
+	},
+	remove: function( owner, key ) {
+		var i, name, camel,
+			unlock = this.key( owner ),
+			cache = this.cache[ unlock ];
+
+		if ( key === undefined ) {
+			this.cache[ unlock ] = {};
+
+		} else {
+			// Support array or space separated string of keys
+			if ( jQuery.isArray( key ) ) {
+				// If "name" is an array of keys...
+				// When data is initially created, via ("key", "val") signature,
+				// keys will be converted to camelCase.
+				// Since there is no way to tell _how_ a key was added, remove
+				// both plain key and camelCase key. #12786
+				// This will only penalize the array argument path.
+				name = key.concat( key.map( jQuery.camelCase ) );
+			} else {
+				camel = jQuery.camelCase( key );
+				// Try the string as a key before any manipulation
+				if ( key in cache ) {
+					name = [ key, camel ];
+				} else {
+					// If a key with the spaces exists, use it.
+					// Otherwise, create an array by matching non-whitespace
+					name = camel;
+					name = name in cache ?
+						[ name ] : ( name.match( core_rnotwhite ) || [] );
+				}
+			}
+
+			i = name.length;
+			while ( i-- ) {
+				delete cache[ name[ i ] ];
+			}
+		}
+	},
+	hasData: function( owner ) {
+		return !jQuery.isEmptyObject(
+			this.cache[ owner[ this.expando ] ] || {}
+		);
+	},
+	discard: function( owner ) {
+		if ( owner[ this.expando ] ) {
+			delete this.cache[ owner[ this.expando ] ];
+		}
+	}
+};
+
+// These may be used throughout the jQuery core codebase
+data_user = new Data();
+data_priv = new Data();
+
+
+jQuery.extend({
+	acceptData: Data.accepts,
+
+	hasData: function( elem ) {
+		return data_user.hasData( elem ) || data_priv.hasData( elem );
+	},
+
+	data: function( elem, name, data ) {
+		return data_user.access( elem, name, data );
+	},
+
+	removeData: function( elem, name ) {
+		data_user.remove( elem, name );
+	},
+
+	// TODO: Now that all calls to _data and _removeData have been replaced
+	// with direct calls to data_priv methods, these can be deprecated.
+	_data: function( elem, name, data ) {
+		return data_priv.access( elem, name, data );
+	},
+
+	_removeData: function( elem, name ) {
+		data_priv.remove( elem, name );
+	}
+});
+
+jQuery.fn.extend({
+	data: function( key, value ) {
+		var attrs, name,
+			elem = this[ 0 ],
+			i = 0,
+			data = null;
+
+		// Gets all values
+		if ( key === undefined ) {
+			if ( this.length ) {
+				data = data_user.get( elem );
+
+				if ( elem.nodeType === 1 && !data_priv.get( elem, "hasDataAttrs" ) ) {
+					attrs = elem.attributes;
+					for ( ; i < attrs.length; i++ ) {
+						name = attrs[ i ].name;
+
+						if ( name.indexOf( "data-" ) === 0 ) {
+							name = jQuery.camelCase( name.slice(5) );
+							dataAttr( elem, name, data[ name ] );
+						}
+					}
+					data_priv.set( elem, "hasDataAttrs", true );
+				}
+			}
+
+			return data;
+		}
+
+		// Sets multiple values
+		if ( typeof key === "object" ) {
+			return this.each(function() {
+				data_user.set( this, key );
+			});
+		}
+
+		return jQuery.access( this, function( value ) {
+			var data,
+				camelKey = jQuery.camelCase( key );
+
+			// The calling jQuery object (element matches) is not empty
+			// (and therefore has an element appears at this[ 0 ]) and the
+			// `value` parameter was not undefined. An empty jQuery object
+			// will result in `undefined` for elem = this[ 0 ] which will
+			// throw an exception if an attempt to read a data cache is made.
+			if ( elem && value === undefined ) {
+				// Attempt to get data from the cache
+				// with the key as-is
+				data = data_user.get( elem, key );
+				if ( data !== undefined ) {
+					return data;
+				}
+
+				// Attempt to get data from the cache
+				// with the key camelized
+				data = data_user.get( elem, camelKey );
+				if ( data !== undefined ) {
+					return data;
+				}
+
+				// Attempt to "discover" the data in
+				// HTML5 custom data-* attrs
+				data = dataAttr( elem, camelKey, undefined );
+				if ( data !== undefined ) {
+					return data;
+				}
+
+				// We tried really hard, but the data doesn't exist.
+				return;
+			}
+
+			// Set the data...
+			this.each(function() {
+				// First, attempt to store a copy or reference of any
+				// data that might've been store with a camelCased key.
+				var data = data_user.get( this, camelKey );
+
+				// For HTML5 data-* attribute interop, we have to
+				// store property names with dashes in a camelCase form.
+				// This might not apply to all properties...*
+				data_user.set( this, camelKey, value );
+
+				// *... In the case of properties that might _actually_
+				// have dashes, we need to also store a copy of that
+				// unchanged property.
+				if ( key.indexOf("-") !== -1 && data !== undefined ) {
+					data_user.set( this, key, value );
+				}
+			});
+		}, null, value, arguments.length > 1, null, true );
+	},
+
+	removeData: function( key ) {
+		return this.each(function() {
+			data_user.remove( this, key );
+		});
+	}
+});
+
+function dataAttr( elem, key, data ) {
+	var name;
+
+	// If nothing was found internally, try to fetch any
+	// data from the HTML5 data-* attribute
+	if ( data === undefined && elem.nodeType === 1 ) {
+		name = "data-" + key.replace( rmultiDash, "-$1" ).toLowerCase();
+		data = elem.getAttribute( name );
+
+		if ( typeof data === "string" ) {
+			try {
+				data = data === "true" ? true :
+					data === "false" ? false :
+					data === "null" ? null :
+					// Only convert to a number if it doesn't change the string
+					+data + "" === data ? +data :
+					rbrace.test( data ) ? JSON.parse( data ) :
+					data;
+			} catch( e ) {}
+
+			// Make sure we set the data so it isn't changed later
+			data_user.set( elem, key, data );
+		} else {
+			data = undefined;
+		}
+	}
+	return data;
+}
+jQuery.extend({
+	queue: function( elem, type, data ) {
+		var queue;
+
+		if ( elem ) {
+			type = ( type || "fx" ) + "queue";
+			queue = data_priv.get( elem, type );
+
+			// Speed up dequeue by getting out quickly if this is just a lookup
+			if ( data ) {
+				if ( !queue || jQuery.isArray( data ) ) {
+					queue = data_priv.access( elem, type, jQuery.makeArray(data) );
+				} else {
+					queue.push( data );
+				}
+			}
+			return queue || [];
+		}
+	},
+
+	dequeue: function( elem, type ) {
+		type = type || "fx";
+
+		var queue = jQuery.queue( elem, type ),
+			startLength = queue.length,
+			fn = queue.shift(),
+			hooks = jQuery._queueHooks( elem, type ),
+			next = function() {
+				jQuery.dequeue( elem, type );
+			};
+
+		// If the fx queue is dequeued, always remove the progress sentinel
+		if ( fn === "inprogress" ) {
+			fn = queue.shift();
+			startLength--;
+		}
+
+		if ( fn ) {
+
+			// Add a progress sentinel to prevent the fx queue from being
+			// automatically dequeued
+			if ( type === "fx" ) {
+				queue.unshift( "inprogress" );
+			}
+
+			// clear up the last queue stop function
+			delete hooks.stop;
+			fn.call( elem, next, hooks );
+		}
+
+		if ( !startLength && hooks ) {
+			hooks.empty.fire();
+		}
+	},
+
+	// not intended for public consumption - generates a queueHooks object, or returns the current one
+	_queueHooks: function( elem, type ) {
+		var key = type + "queueHooks";
+		return data_priv.get( elem, key ) || data_priv.access( elem, key, {
+			empty: jQuery.Callbacks("once memory").add(function() {
+				data_priv.remove( elem, [ type + "queue", key ] );
+			})
+		});
+	}
+});
+
+jQuery.fn.extend({
+	queue: function( type, data ) {
+		var setter = 2;
+
+		if ( typeof type !== "string" ) {
+			data = type;
+			type = "fx";
+			setter--;
+		}
+
+		if ( arguments.length < setter ) {
+			return jQuery.queue( this[0], type );
+		}
+
+		return data === undefined ?
+			this :
+			this.each(function() {
+				var queue = jQuery.queue( this, type, data );
+
+				// ensure a hooks for this queue
+				jQuery._queueHooks( this, type );
+
+				if ( type === "fx" && queue[0] !== "inprogress" ) {
+					jQuery.dequeue( this, type );
+				}
+			});
+	},
+	dequeue: function( type ) {
+		return this.each(function() {
+			jQuery.dequeue( this, type );
+		});
+	},
+	// Based off of the plugin by Clint Helfers, with permission.
+	// http://blindsignals.com/index.php/2009/07/jquery-delay/
+	delay: function( time, type ) {
+		time = jQuery.fx ? jQuery.fx.speeds[ time ] || time : time;
+		type = type || "fx";
+
+		return this.queue( type, function( next, hooks ) {
+			var timeout = setTimeout( next, time );
+			hooks.stop = function() {
+				clearTimeout( timeout );
+			};
+		});
+	},
+	clearQueue: function( type ) {
+		return this.queue( type || "fx", [] );
+	},
+	// Get a promise resolved when queues of a certain type
+	// are emptied (fx is the type by default)
+	promise: function( type, obj ) {
+		var tmp,
+			count = 1,
+			defer = jQuery.Deferred(),
+			elements = this,
+			i = this.length,
+			resolve = function() {
+				if ( !( --count ) ) {
+					defer.resolveWith( elements, [ elements ] );
+				}
+			};
+
+		if ( typeof type !== "string" ) {
+			obj = type;
+			type = undefined;
+		}
+		type = type || "fx";
+
+		while( i-- ) {
+			tmp = data_priv.get( elements[ i ], type + "queueHooks" );
+			if ( tmp && tmp.empty ) {
+				count++;
+				tmp.empty.add( resolve );
+			}
+		}
+		resolve();
+		return defer.promise( obj );
+	}
+});
+var nodeHook, boolHook,
+	rclass = /[\t\r\n\f]/g,
+	rreturn = /\r/g,
+	rfocusable = /^(?:input|select|textarea|button)$/i;
+
+jQuery.fn.extend({
+	attr: function( name, value ) {
+		return jQuery.access( this, jQuery.attr, name, value, arguments.length > 1 );
+	},
+
+	removeAttr: function( name ) {
+		return this.each(function() {
+			jQuery.removeAttr( this, name );
+		});
+	},
+
+	prop: function( name, value ) {
+		return jQuery.access( this, jQuery.prop, name, value, arguments.length > 1 );
+	},
+
+	removeProp: function( name ) {
+		return this.each(function() {
+			delete this[ jQuery.propFix[ name ] || name ];
+		});
+	},
+
+	addClass: function( value ) {
+		var classes, elem, cur, clazz, j,
+			i = 0,
+			len = this.length,
+			proceed = typeof value === "string" && value;
+
+		if ( jQuery.isFunction( value ) ) {
+			return this.each(function( j ) {
+				jQuery( this ).addClass( value.call( this, j, this.className ) );
+			});
+		}
+
+		if ( proceed ) {
+			// The disjunction here is for better compressibility (see removeClass)
+			classes = ( value || "" ).match( core_rnotwhite ) || [];
+
+			for ( ; i < len; i++ ) {
+				elem = this[ i ];
+				cur = elem.nodeType === 1 && ( elem.className ?
+					( " " + elem.className + " " ).replace( rclass, " " ) :
+					" "
+				);
+
+				if ( cur ) {
+					j = 0;
+					while ( (clazz = classes[j++]) ) {
+						if ( cur.indexOf( " " + clazz + " " ) < 0 ) {
+							cur += clazz + " ";
+						}
+					}
+					elem.className = jQuery.trim( cur );
+
+				}
+			}
+		}
+
+		return this;
+	},
+
+	removeClass: function( value ) {
+		var classes, elem, cur, clazz, j,
+			i = 0,
+			len = this.length,
+			proceed = arguments.length === 0 || typeof value === "string" && value;
+
+		if ( jQuery.isFunction( value ) ) {
+			return this.each(function( j ) {
+				jQuery( this ).removeClass( value.call( this, j, this.className ) );
+			});
+		}
+		if ( proceed ) {
+			classes = ( value || "" ).match( core_rnotwhite ) || [];
+
+			for ( ; i < len; i++ ) {
+				elem = this[ i ];
+				// This expression is here for better compressibility (see addClass)
+				cur = elem.nodeType === 1 && ( elem.className ?
+					( " " + elem.className + " " ).replace( rclass, " " ) :
+					""
+				);
+
+				if ( cur ) {
+					j = 0;
+					while ( (clazz = classes[j++]) ) {
+						// Remove *all* instances
+						while ( cur.indexOf( " " + clazz + " " ) >= 0 ) {
+							cur = cur.replace( " " + clazz + " ", " " );
+						}
+					}
+					elem.className = value ? jQuery.trim( cur ) : "";
+				}
+			}
+		}
+
+		return this;
+	},
+
+	toggleClass: function( value, stateVal ) {
+		var type = typeof value;
+
+		if ( typeof stateVal === "boolean" && type === "string" ) {
+			return stateVal ? this.addClass( value ) : this.removeClass( value );
+		}
+
+		if ( jQuery.isFunction( value ) ) {
+			return this.each(function( i ) {
+				jQuery( this ).toggleClass( value.call(this, i, this.className, stateVal), stateVal );
+			});
+		}
+
+		return this.each(function() {
+			if ( type === "string" ) {
+				// toggle individual class names
+				var className,
+					i = 0,
+					self = jQuery( this ),
+					classNames = value.match( core_rnotwhite ) || [];
+
+				while ( (className = classNames[ i++ ]) ) {
+					// check each className given, space separated list
+					if ( self.hasClass( className ) ) {
+						self.removeClass( className );
+					} else {
+						self.addClass( className );
+					}
+				}
+
+			// Toggle whole class name
+			} else if ( type === core_strundefined || type === "boolean" ) {
+				if ( this.className ) {
+					// store className if set
+					data_priv.set( this, "__className__", this.className );
+				}
+
+				// If the element has a class name or if we're passed "false",
+				// then remove the whole classname (if there was one, the above saved it).
+				// Otherwise bring back whatever was previously saved (if anything),
+				// falling back to the empty string if nothing was stored.
+				this.className = this.className || value === false ? "" : data_priv.get( this, "__className__" ) || "";
+			}
+		});
+	},
+
+	hasClass: function( selector ) {
+		var className = " " + selector + " ",
+			i = 0,
+			l = this.length;
+		for ( ; i < l; i++ ) {
+			if ( this[i].nodeType === 1 && (" " + this[i].className + " ").replace(rclass, " ").indexOf( className ) >= 0 ) {
+				return true;
+			}
+		}
+
+		return false;
+	},
+
+	val: function( value ) {
+		var hooks, ret, isFunction,
+			elem = this[0];
+
+		if ( !arguments.length ) {
+			if ( elem ) {
+				hooks = jQuery.valHooks[ elem.type ] || jQuery.valHooks[ elem.nodeName.toLowerCase() ];
+
+				if ( hooks && "get" in hooks && (ret = hooks.get( elem, "value" )) !== undefined ) {
+					return ret;
+				}
+
+				ret = elem.value;
+
+				return typeof ret === "string" ?
+					// handle most common string cases
+					ret.replace(rreturn, "") :
+					// handle cases where value is null/undef or number
+					ret == null ? "" : ret;
+			}
+
+			return;
+		}
+
+		isFunction = jQuery.isFunction( value );
+
+		return this.each(function( i ) {
+			var val;
+
+			if ( this.nodeType !== 1 ) {
+				return;
+			}
+
+			if ( isFunction ) {
+				val = value.call( this, i, jQuery( this ).val() );
+			} else {
+				val = value;
+			}
+
+			// Treat null/undefined as ""; convert numbers to string
+			if ( val == null ) {
+				val = "";
+			} else if ( typeof val === "number" ) {
+				val += "";
+			} else if ( jQuery.isArray( val ) ) {
+				val = jQuery.map(val, function ( value ) {
+					return value == null ? "" : value + "";
+				});
+			}
+
+			hooks = jQuery.valHooks[ this.type ] || jQuery.valHooks[ this.nodeName.toLowerCase() ];
+
+			// If set returns undefined, fall back to normal setting
+			if ( !hooks || !("set" in hooks) || hooks.set( this, val, "value" ) === undefined ) {
+				this.value = val;
+			}
+		});
+	}
+});
+
+jQuery.extend({
+	valHooks: {
+		option: {
+			get: function( elem ) {
+				// attributes.value is undefined in Blackberry 4.7 but
+				// uses .value. See #6932
+				var val = elem.attributes.value;
+				return !val || val.specified ? elem.value : elem.text;
+			}
+		},
+		select: {
+			get: function( elem ) {
+				var value, option,
+					options = elem.options,
+					index = elem.selectedIndex,
+					one = elem.type === "select-one" || index < 0,
+					values = one ? null : [],
+					max = one ? index + 1 : options.length,
+					i = index < 0 ?
+						max :
+						one ? index : 0;
+
+				// Loop through all the selected options
+				for ( ; i < max; i++ ) {
+					option = options[ i ];
+
+					// IE6-9 doesn't update selected after form reset (#2551)
+					if ( ( option.selected || i === index ) &&
+							// Don't return options that are disabled or in a disabled optgroup
+							( jQuery.support.optDisabled ? !option.disabled : option.getAttribute("disabled") === null ) &&
+							( !option.parentNode.disabled || !jQuery.nodeName( option.parentNode, "optgroup" ) ) ) {
+
+						// Get the specific value for the option
+						value = jQuery( option ).val();
+
+						// We don't need an array for one selects
+						if ( one ) {
+							return value;
+						}
+
+						// Multi-Selects return an array
+						values.push( value );
+					}
+				}
+
+				return values;
+			},
+
+			set: function( elem, value ) {
+				var optionSet, option,
+					options = elem.options,
+					values = jQuery.makeArray( value ),
+					i = options.length;
+
+				while ( i-- ) {
+					option = options[ i ];
+					if ( (option.selected = jQuery.inArray( jQuery(option).val(), values ) >= 0) ) {
+						optionSet = true;
+					}
+				}
+
+				// force browsers to behave consistently when non-matching value is set
+				if ( !optionSet ) {
+					elem.selectedIndex = -1;
+				}
+				return values;
+			}
+		}
+	},
+
+	attr: function( elem, name, value ) {
+		var hooks, ret,
+			nType = elem.nodeType;
+
+		// don't get/set attributes on text, comment and attribute nodes
+		if ( !elem || nType === 3 || nType === 8 || nType === 2 ) {
+			return;
+		}
+
+		// Fallback to prop when attributes are not supported
+		if ( typeof elem.getAttribute === core_strundefined ) {
+			return jQuery.prop( elem, name, value );
+		}
+
+		// All attributes are lowercase
+		// Grab necessary hook if one is defined
+		if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) {
+			name = name.toLowerCase();
+			hooks = jQuery.attrHooks[ name ] ||
+				( jQuery.expr.match.bool.test( name ) ? boolHook : nodeHook );
+		}
+
+		if ( value !== undefined ) {
+
+			if ( value === null ) {
+				jQuery.removeAttr( elem, name );
+
+			} else if ( hooks && "set" in hooks && (ret = hooks.set( elem, value, name )) !== undefined ) {
+				return ret;
+
+			} else {
+				elem.setAttribute( name, value + "" );
+				return value;
+			}
+
+		} else if ( hooks && "get" in hooks && (ret = hooks.get( elem, name )) !== null ) {
+			return ret;
+
+		} else {
+			ret = jQuery.find.attr( elem, name );
+
+			// Non-existent attributes return null, we normalize to undefined
+			return ret == null ?
+				undefined :
+				ret;
+		}
+	},
+
+	removeAttr: function( elem, value ) {
+		var name, propName,
+			i = 0,
+			attrNames = value && value.match( core_rnotwhite );
+
+		if ( attrNames && elem.nodeType === 1 ) {
+			while ( (name = attrNames[i++]) ) {
+				propName = jQuery.propFix[ name ] || name;
+
+				// Boolean attributes get special treatment (#10870)
+				if ( jQuery.expr.match.bool.test( name ) ) {
+					// Set corresponding property to false
+					elem[ propName ] = false;
+				}
+
+				elem.removeAttribute( name );
+			}
+		}
+	},
+
+	attrHooks: {
+		type: {
+			set: function( elem, value ) {
+				if ( !jQuery.support.radioValue && value === "radio" && jQuery.nodeName(elem, "input") ) {
+					// Setting the type on a radio button after the value resets the value in IE6-9
+					// Reset value to default in case type is set after value during creation
+					var val = elem.value;
+					elem.setAttribute( "type", value );
+					if ( val ) {
+						elem.value = val;
+					}
+					return value;
+				}
+			}
+		}
+	},
+
+	propFix: {
+		"for": "htmlFor",
+		"class": "className"
+	},
+
+	prop: function( elem, name, value ) {
+		var ret, hooks, notxml,
+			nType = elem.nodeType;
+
+		// don't get/set properties on text, comment and attribute nodes
+		if ( !elem || nType === 3 || nType === 8 || nType === 2 ) {
+			return;
+		}
+
+		notxml = nType !== 1 || !jQuery.isXMLDoc( elem );
+
+		if ( notxml ) {
+			// Fix name and attach hooks
+			name = jQuery.propFix[ name ] || name;
+			hooks = jQuery.propHooks[ name ];
+		}
+
+		if ( value !== undefined ) {
+			return hooks && "set" in hooks && (ret = hooks.set( elem, value, name )) !== undefined ?
+				ret :
+				( elem[ name ] = value );
+
+		} else {
+			return hooks && "get" in hooks && (ret = hooks.get( elem, name )) !== null ?
+				ret :
+				elem[ name ];
+		}
+	},
+
+	propHooks: {
+		tabIndex: {
+			get: function( elem ) {
+				return elem.hasAttribute( "tabindex" ) || rfocusable.test( elem.nodeName ) || elem.href ?
+					elem.tabIndex :
+					-1;
+			}
+		}
+	}
+});
+
+// Hooks for boolean attributes
+boolHook = {
+	set: function( elem, value, name ) {
+		if ( value === false ) {
+			// Remove boolean attributes when set to false
+			jQuery.removeAttr( elem, name );
+		} else {
+			elem.setAttribute( name, name );
+		}
+		return name;
+	}
+};
+jQuery.each( jQuery.expr.match.bool.source.match( /\w+/g ), function( i, name ) {
+	var getter = jQuery.expr.attrHandle[ name ] || jQuery.find.attr;
+
+	jQuery.expr.attrHandle[ name ] = function( elem, name, isXML ) {
+		var fn = jQuery.expr.attrHandle[ name ],
+			ret = isXML ?
+				undefined :
+				/* jshint eqeqeq: false */
+				// Temporarily disable this handler to check existence
+				(jQuery.expr.attrHandle[ name ] = undefined) !=
+					getter( elem, name, isXML ) ?
+
+					name.toLowerCase() :
+					null;
+
+		// Restore handler
+		jQuery.expr.attrHandle[ name ] = fn;
+
+		return ret;
+	};
+});
+
+// Support: IE9+
+// Selectedness for an option in an optgroup can be inaccurate
+if ( !jQuery.support.optSelected ) {
+	jQuery.propHooks.selected = {
+		get: function( elem ) {
+			var parent = elem.parentNode;
+			if ( parent && parent.parentNode ) {
+				parent.parentNode.selectedIndex;
+			}
+			return null;
+		}
+	};
+}
+
+jQuery.each([
+	"tabIndex",
+	"readOnly",
+	"maxLength",
+	"cellSpacing",
+	"cellPadding",
+	"rowSpan",
+	"colSpan",
+	"useMap",
+	"frameBorder",
+	"contentEditable"
+], function() {
+	jQuery.propFix[ this.toLowerCase() ] = this;
+});
+
+// Radios and checkboxes getter/setter
+jQuery.each([ "radio", "checkbox" ], function() {
+	jQuery.valHooks[ this ] = {
+		set: function( elem, value ) {
+			if ( jQuery.isArray( value ) ) {
+				return ( elem.checked = jQuery.inArray( jQuery(elem).val(), value ) >= 0 );
+			}
+		}
+	};
+	if ( !jQuery.support.checkOn ) {
+		jQuery.valHooks[ this ].get = function( elem ) {
+			// Support: Webkit
+			// "" is returned instead of "on" if a value isn't specified
+			return elem.getAttribute("value") === null ? "on" : elem.value;
+		};
+	}
+});
+var rkeyEvent = /^key/,
+	rmouseEvent = /^(?:mouse|contextmenu)|click/,
+	rfocusMorph = /^(?:focusinfocus|focusoutblur)$/,
+	rtypenamespace = /^([^.]*)(?:\.(.+)|)$/;
+
+function returnTrue() {
+	return true;
+}
+
+function returnFalse() {
+	return false;
+}
+
+function safeActiveElement() {
+	try {
+		return document.activeElement;
+	} catch ( err ) { }
+}
+
+/*
+ * Helper functions for managing events -- not part of the public interface.
+ * Props to Dean Edwards' addEvent library for many of the ideas.
+ */
+jQuery.event = {
+
+	global: {},
+
+	add: function( elem, types, handler, data, selector ) {
+
+		var handleObjIn, eventHandle, tmp,
+			events, t, handleObj,
+			special, handlers, type, namespaces, origType,
+			elemData = data_priv.get( elem );
+
+		// Don't attach events to noData or text/comment nodes (but allow plain objects)
+		if ( !elemData ) {
+			return;
+		}
+
+		// Caller can pass in an object of custom data in lieu of the handler
+		if ( handler.handler ) {
+			handleObjIn = handler;
+			handler = handleObjIn.handler;
+			selector = handleObjIn.selector;
+		}
+
+		// Make sure that the handler has a unique ID, used to find/remove it later
+		if ( !handler.guid ) {
+			handler.guid = jQuery.guid++;
+		}
+
+		// Init the element's event structure and main handler, if this is the first
+		if ( !(events = elemData.events) ) {
+			events = elemData.events = {};
+		}
+		if ( !(eventHandle = elemData.handle) ) {
+			eventHandle = elemData.handle = function( e ) {
+				// Discard the second event of a jQuery.event.trigger() and
+				// when an event is called after a page has unloaded
+				return typeof jQuery !== core_strundefined && (!e || jQuery.event.triggered !== e.type) ?
+					jQuery.event.dispatch.apply( eventHandle.elem, arguments ) :
+					undefined;
+			};
+			// Add elem as a property of the handle fn to prevent a memory leak with IE non-native events
+			eventHandle.elem = elem;
+		}
+
+		// Handle multiple events separated by a space
+		types = ( types || "" ).match( core_rnotwhite ) || [""];
+		t = types.length;
+		while ( t-- ) {
+			tmp = rtypenamespace.exec( types[t] ) || [];
+			type = origType = tmp[1];
+			namespaces = ( tmp[2] || "" ).split( "." ).sort();
+
+			// There *must* be a type, no attaching namespace-only handlers
+			if ( !type ) {
+				continue;
+			}
+
+			// If event changes its type, use the special event handlers for the changed type
+			special = jQuery.event.special[ type ] || {};
+
+			// If selector defined, determine special event api type, otherwise given type
+			type = ( selector ? special.delegateType : special.bindType ) || type;
+
+			// Update special based on newly reset type
+			special = jQuery.event.special[ type ] || {};
+
+			// handleObj is passed to all event handlers
+			handleObj = jQuery.extend({
+				type: type,
+				origType: origType,
+				data: data,
+				handler: handler,
+				guid: handler.guid,
+				selector: selector,
+				needsContext: selector && jQuery.expr.match.needsContext.test( selector ),
+				namespace: namespaces.join(".")
+			}, handleObjIn );
+
+			// Init the event handler queue if we're the first
+			if ( !(handlers = events[ type ]) ) {
+				handlers = events[ type ] = [];
+				handlers.delegateCount = 0;
+
+				// Only use addEventListener if the special events handler returns false
+				if ( !special.setup || special.setup.call( elem, data, namespaces, eventHandle ) === false ) {
+					if ( elem.addEventListener ) {
+						elem.addEventListener( type, eventHandle, false );
+					}
+				}
+			}
+
+			if ( special.add ) {
+				special.add.call( elem, handleObj );
+
+				if ( !handleObj.handler.guid ) {
+					handleObj.handler.guid = handler.guid;
+				}
+			}
+
+			// Add to the element's handler list, delegates in front
+			if ( selector ) {
+				handlers.splice( handlers.delegateCount++, 0, handleObj );
+			} else {
+				handlers.push( handleObj );
+			}
+
+			// Keep track of which events have ever been used, for event optimization
+			jQuery.event.global[ type ] = true;
+		}
+
+		// Nullify elem to prevent memory leaks in IE
+		elem = null;
+	},
+
+	// Detach an event or set of events from an element
+	remove: function( elem, types, handler, selector, mappedTypes ) {
+
+		var j, origCount, tmp,
+			events, t, handleObj,
+			special, handlers, type, namespaces, origType,
+			elemData = data_priv.hasData( elem ) && data_priv.get( elem );
+
+		if ( !elemData || !(events = elemData.events) ) {
+			return;
+		}
+
+		// Once for each type.namespace in types; type may be omitted
+		types = ( types || "" ).match( core_rnotwhite ) || [""];
+		t = types.length;
+		while ( t-- ) {
+			tmp = rtypenamespace.exec( types[t] ) || [];
+			type = origType = tmp[1];
+			namespaces = ( tmp[2] || "" ).split( "." ).sort();
+
+			// Unbind all events (on this namespace, if provided) for the element
+			if ( !type ) {
+				for ( type in events ) {
+					jQuery.event.remove( elem, type + types[ t ], handler, selector, true );
+				}
+				continue;
+			}
+
+			special = jQuery.event.special[ type ] || {};
+			type = ( selector ? special.delegateType : special.bindType ) || type;
+			handlers = events[ type ] || [];
+			tmp = tmp[2] && new RegExp( "(^|\\.)" + namespaces.join("\\.(?:.*\\.|)") + "(\\.|$)" );
+
+			// Remove matching events
+			origCount = j = handlers.length;
+			while ( j-- ) {
+				handleObj = handlers[ j ];
+
+				if ( ( mappedTypes || origType === handleObj.origType ) &&
+					( !handler || handler.guid === handleObj.guid ) &&
+					( !tmp || tmp.test( handleObj.namespace ) ) &&
+					( !selector || selector === handleObj.selector || selector === "**" && handleObj.selector ) ) {
+					handlers.splice( j, 1 );
+
+					if ( handleObj.selector ) {
+						handlers.delegateCount--;
+					}
+					if ( special.remove ) {
+						special.remove.call( elem, handleObj );
+					}
+				}
+			}
+
+			// Remove generic event handler if we removed something and no more handlers exist
+			// (avoids potential for endless recursion during removal of special event handlers)
+			if ( origCount && !handlers.length ) {
+				if ( !special.teardown || special.teardown.call( elem, namespaces, elemData.handle ) === false ) {
+					jQuery.removeEvent( elem, type, elemData.handle );
+				}
+
+				delete events[ type ];
+			}
+		}
+
+		// Remove the expando if it's no longer used
+		if ( jQuery.isEmptyObject( events ) ) {
+			delete elemData.handle;
+			data_priv.remove( elem, "events" );
+		}
+	},
+
+	trigger: function( event, data, elem, onlyHandlers ) {
+
+		var i, cur, tmp, bubbleType, ontype, handle, special,
+			eventPath = [ elem || document ],
+			type = core_hasOwn.call( event, "type" ) ? event.type : event,
+			namespaces = core_hasOwn.call( event, "namespace" ) ? event.namespace.split(".") : [];
+
+		cur = tmp = elem = elem || document;
+
+		// Don't do events on text and comment nodes
+		if ( elem.nodeType === 3 || elem.nodeType === 8 ) {
+			return;
+		}
+
+		// focus/blur morphs to focusin/out; ensure we're not firing them right now
+		if ( rfocusMorph.test( type + jQuery.event.triggered ) ) {
+			return;
+		}
+
+		if ( type.indexOf(".") >= 0 ) {
+			// Namespaced trigger; create a regexp to match event type in handle()
+			namespaces = type.split(".");
+			type = namespaces.shift();
+			namespaces.sort();
+		}
+		ontype = type.indexOf(":") < 0 && "on" + type;
+
+		// Caller can pass in a jQuery.Event object, Object, or just an event type string
+		event = event[ jQuery.expando ] ?
+			event :
+			new jQuery.Event( type, typeof event === "object" && event );
+
+		// Trigger bitmask: & 1 for native handlers; & 2 for jQuery (always true)
+		event.isTrigger = onlyHandlers ? 2 : 3;
+		event.namespace = namespaces.join(".");
+		event.namespace_re = event.namespace ?
+			new RegExp( "(^|\\.)" + namespaces.join("\\.(?:.*\\.|)") + "(\\.|$)" ) :
+			null;
+
+		// Clean up the event in case it is being reused
+		event.result = undefined;
+		if ( !event.target ) {
+			event.target = elem;
+		}
+
+		// Clone any incoming data and prepend the event, creating the handler arg list
+		data = data == null ?
+			[ event ] :
+			jQuery.makeArray( data, [ event ] );
+
+		// Allow special events to draw outside the lines
+		special = jQuery.event.special[ type ] || {};
+		if ( !onlyHandlers && special.trigger && special.trigger.apply( elem, data ) === false ) {
+			return;
+		}
+
+		// Determine event propagation path in advance, per W3C events spec (#9951)
+		// Bubble up to document, then to window; watch for a global ownerDocument var (#9724)
+		if ( !onlyHandlers && !special.noBubble && !jQuery.isWindow( elem ) ) {
+
+			bubbleType = special.delegateType || type;
+			if ( !rfocusMorph.test( bubbleType + type ) ) {
+				cur = cur.parentNode;
+			}
+			for ( ; cur; cur = cur.parentNode ) {
+				eventPath.push( cur );
+				tmp = cur;
+			}
+
+			// Only add window if we got to document (e.g., not plain obj or detached DOM)
+			if ( tmp === (elem.ownerDocument || document) ) {
+				eventPath.push( tmp.defaultView || tmp.parentWindow || window );
+			}
+		}
+
+		// Fire handlers on the event path
+		i = 0;
+		while ( (cur = eventPath[i++]) && !event.isPropagationStopped() ) {
+
+			event.type = i > 1 ?
+				bubbleType :
+				special.bindType || type;
+
+			// jQuery handler
+			handle = ( data_priv.get( cur, "events" ) || {} )[ event.type ] && data_priv.get( cur, "handle" );
+			if ( handle ) {
+				handle.apply( cur, data );
+			}
+
+			// Native handler
+			handle = ontype && cur[ ontype ];
+			if ( handle && jQuery.acceptData( cur ) && handle.apply && handle.apply( cur, data ) === false ) {
+				event.preventDefault();
+			}
+		}
+		event.type = type;
+
+		// If nobody prevented the default action, do it now
+		if ( !onlyHandlers && !event.isDefaultPrevented() ) {
+
+			if ( (!special._default || special._default.apply( eventPath.pop(), data ) === false) &&
+				jQuery.acceptData( elem ) ) {
+
+				// Call a native DOM method on the target with the same name name as the event.
+				// Don't do default actions on window, that's where global variables be (#6170)
+				if ( ontype && jQuery.isFunction( elem[ type ] ) && !jQuery.isWindow( elem ) ) {
+
+					// Don't re-trigger an onFOO event when we call its FOO() method
+					tmp = elem[ ontype ];
+
+					if ( tmp ) {
+						elem[ ontype ] = null;
+					}
+
+					// Prevent re-triggering of the same event, since we already bubbled it above
+					jQuery.event.triggered = type;
+					elem[ type ]();
+					jQuery.event.triggered = undefined;
+
+					if ( tmp ) {
+						elem[ ontype ] = tmp;
+					}
+				}
+			}
+		}
+
+		return event.result;
+	},
+
+	dispatch: function( event ) {
+
+		// Make a writable jQuery.Event from the native event object
+		event = jQuery.event.fix( event );
+
+		var i, j, ret, matched, handleObj,
+			handlerQueue = [],
+			args = core_slice.call( arguments ),
+			handlers = ( data_priv.get( this, "events" ) || {} )[ event.type ] || [],
+			special = jQuery.event.special[ event.type ] || {};
+
+		// Use the fix-ed jQuery.Event rather than the (read-only) native event
+		args[0] = event;
+		event.delegateTarget = this;
+
+		// Call the preDispatch hook for the mapped type, and let it bail if desired
+		if ( special.preDispatch && special.preDispatch.call( this, event ) === false ) {
+			return;
+		}
+
+		// Determine handlers
+		handlerQueue = jQuery.event.handlers.call( this, event, handlers );
+
+		// Run delegates first; they may want to stop propagation beneath us
+		i = 0;
+		while ( (matched = handlerQueue[ i++ ]) && !event.isPropagationStopped() ) {
+			event.currentTarget = matched.elem;
+
+			j = 0;
+			while ( (handleObj = matched.handlers[ j++ ]) && !event.isImmediatePropagationStopped() ) {
+
+				// Triggered event must either 1) have no namespace, or
+				// 2) have namespace(s) a subset or equal to those in the bound event (both can have no namespace).
+				if ( !event.namespace_re || event.namespace_re.test( handleObj.namespace ) ) {
+
+					event.handleObj = handleObj;
+					event.data = handleObj.data;
+
+					ret = ( (jQuery.event.special[ handleObj.origType ] || {}).handle || handleObj.handler )
+							.apply( matched.elem, args );
+
+					if ( ret !== undefined ) {
+						if ( (event.result = ret) === false ) {
+							event.preventDefault();
+							event.stopPropagation();
+						}
+					}
+				}
+			}
+		}
+
+		// Call the postDispatch hook for the mapped type
+		if ( special.postDispatch ) {
+			special.postDispatch.call( this, event );
+		}
+
+		return event.result;
+	},
+
+	handlers: function( event, handlers ) {
+		var i, matches, sel, handleObj,
+			handlerQueue = [],
+			delegateCount = handlers.delegateCount,
+			cur = event.target;
+
+		// Find delegate handlers
+		// Black-hole SVG <use> instance trees (#13180)
+		// Avoid non-left-click bubbling in Firefox (#3861)
+		if ( delegateCount && cur.nodeType && (!event.button || event.type !== "click") ) {
+
+			for ( ; cur !== this; cur = cur.parentNode || this ) {
+
+				// Don't process clicks on disabled elements (#6911, #8165, #11382, #11764)
+				if ( cur.disabled !== true || event.type !== "click" ) {
+					matches = [];
+					for ( i = 0; i < delegateCount; i++ ) {
+						handleObj = handlers[ i ];
+
+						// Don't conflict with Object.prototype properties (#13203)
+						sel = handleObj.selector + " ";
+
+						if ( matches[ sel ] === undefined ) {
+							matches[ sel ] = handleObj.needsContext ?
+								jQuery( sel, this ).index( cur ) >= 0 :
+								jQuery.find( sel, this, null, [ cur ] ).length;
+						}
+						if ( matches[ sel ] ) {
+							matches.push( handleObj );
+						}
+					}
+					if ( matches.length ) {
+						handlerQueue.push({ elem: cur, handlers: matches });
+					}
+				}
+			}
+		}
+
+		// Add the remaining (directly-bound) handlers
+		if ( delegateCount < handlers.length ) {
+			handlerQueue.push({ elem: this, handlers: handlers.slice( delegateCount ) });
+		}
+
+		return handlerQueue;
+	},
+
+	// Includes some event props shared by KeyEvent and MouseEvent
+	props: "altKey bubbles cancelable ctrlKey currentTarget eventPhase metaKey relatedTarget shiftKey target timeStamp view which".split(" "),
+
+	fixHooks: {},
+
+	keyHooks: {
+		props: "char charCode key keyCode".split(" "),
+		filter: function( event, original ) {
+
+			// Add which for key events
+			if ( event.which == null ) {
+				event.which = original.charCode != null ? original.charCode : original.keyCode;
+			}
+
+			return event;
+		}
+	},
+
+	mouseHooks: {
+		props: "button buttons clientX clientY offsetX offsetY pageX pageY screenX screenY toElement".split(" "),
+		filter: function( event, original ) {
+			var eventDoc, doc, body,
+				button = original.button;
+
+			// Calculate pageX/Y if missing and clientX/Y available
+			if ( event.pageX == null && original.clientX != null ) {
+				eventDoc = event.target.ownerDocument || document;
+				doc = eventDoc.documentElement;
+				body = eventDoc.body;
+
+				event.pageX = original.clientX + ( doc && doc.scrollLeft || body && body.scrollLeft || 0 ) - ( doc && doc.clientLeft || body && body.clientLeft || 0 );
+				event.pageY = original.clientY + ( doc && doc.scrollTop  || body && body.scrollTop  || 0 ) - ( doc && doc.clientTop  || body && body.clientTop  || 0 );
+			}
+
+			// Add which for click: 1 === left; 2 === middle; 3 === right
+			// Note: button is not normalized, so don't use it
+			if ( !event.which && button !== undefined ) {
+				event.which = ( button & 1 ? 1 : ( button & 2 ? 3 : ( button & 4 ? 2 : 0 ) ) );
+			}
+
+			return event;
+		}
+	},
+
+	fix: function( event ) {
+		if ( event[ jQuery.expando ] ) {
+			return event;
+		}
+
+		// Create a writable copy of the event object and normalize some properties
+		var i, prop, copy,
+			type = event.type,
+			originalEvent = event,
+			fixHook = this.fixHooks[ type ];
+
+		if ( !fixHook ) {
+			this.fixHooks[ type ] = fixHook =
+				rmouseEvent.test( type ) ? this.mouseHooks :
+				rkeyEvent.test( type ) ? this.keyHooks :
+				{};
+		}
+		copy = fixHook.props ? this.props.concat( fixHook.props ) : this.props;
+
+		event = new jQuery.Event( originalEvent );
+
+		i = copy.length;
+		while ( i-- ) {
+			prop = copy[ i ];
+			event[ prop ] = originalEvent[ prop ];
+		}
+
+		// Support: Cordova 2.5 (WebKit) (#13255)
+		// All events should have a target; Cordova deviceready doesn't
+		if ( !event.target ) {
+			event.target = document;
+		}
+
+		// Support: Safari 6.0+, Chrome < 28
+		// Target should not be a text node (#504, #13143)
+		if ( event.target.nodeType === 3 ) {
+			event.target = event.target.parentNode;
+		}
+
+		return fixHook.filter? fixHook.filter( event, originalEvent ) : event;
+	},
+
+	special: {
+		load: {
+			// Prevent triggered image.load events from bubbling to window.load
+			noBubble: true
+		},
+		focus: {
+			// Fire native event if possible so blur/focus sequence is correct
+			trigger: function() {
+				if ( this !== safeActiveElement() && this.focus ) {
+					this.focus();
+					return false;
+				}
+			},
+			delegateType: "focusin"
+		},
+		blur: {
+			trigger: function() {
+				if ( this === safeActiveElement() && this.blur ) {
+					this.blur();
+					return false;
+				}
+			},
+			delegateType: "focusout"
+		},
+		click: {
+			// For checkbox, fire native event so checked state will be right
+			trigger: function() {
+				if ( this.type === "checkbox" && this.click && jQuery.nodeName( this, "input" ) ) {
+					this.click();
+					return false;
+				}
+			},
+
+			// For cross-browser consistency, don't fire native .click() on links
+			_default: function( event ) {
+				return jQuery.nodeName( event.target, "a" );
+			}
+		},
+
+		beforeunload: {
+			postDispatch: function( event ) {
+
+				// Support: Firefox 20+
+				// Firefox doesn't alert if the returnValue field is not set.
+				if ( event.result !== undefined ) {
+					event.originalEvent.returnValue = event.result;
+				}
+			}
+		}
+	},
+
+	simulate: function( type, elem, event, bubble ) {
+		// Piggyback on a donor event to simulate a different one.
+		// Fake originalEvent to avoid donor's stopPropagation, but if the
+		// simulated event prevents default then we do the same on the donor.
+		var e = jQuery.extend(
+			new jQuery.Event(),
+			event,
+			{
+				type: type,
+				isSimulated: true,
+				originalEvent: {}
+			}
+		);
+		if ( bubble ) {
+			jQuery.event.trigger( e, null, elem );
+		} else {
+			jQuery.event.dispatch.call( elem, e );
+		}
+		if ( e.isDefaultPrevented() ) {
+			event.preventDefault();
+		}
+	}
+};
+
+jQuery.removeEvent = function( elem, type, handle ) {
+	if ( elem.removeEventListener ) {
+		elem.removeEventListener( type, handle, false );
+	}
+};
+
+jQuery.Event = function( src, props ) {
+	// Allow instantiation without the 'new' keyword
+	if ( !(this instanceof jQuery.Event) ) {
+		return new jQuery.Event( src, props );
+	}
+
+	// Event object
+	if ( src && src.type ) {
+		this.originalEvent = src;
+		this.type = src.type;
+
+		// Events bubbling up the document may have been marked as prevented
+		// by a handler lower down the tree; reflect the correct value.
+		this.isDefaultPrevented = ( src.defaultPrevented ||
+			src.getPreventDefault && src.getPreventDefault() ) ? returnTrue : returnFalse;
+
+	// Event type
+	} else {
+		this.type = src;
+	}
+
+	// Put explicitly provided properties onto the event object
+	if ( props ) {
+		jQuery.extend( this, props );
+	}
+
+	// Create a timestamp if incoming event doesn't have one
+	this.timeStamp = src && src.timeStamp || jQuery.now();
+
+	// Mark it as fixed
+	this[ jQuery.expando ] = true;
+};
+
+// jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding
+// http://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html
+jQuery.Event.prototype = {
+	isDefaultPrevented: returnFalse,
+	isPropagationStopped: returnFalse,
+	isImmediatePropagationStopped: returnFalse,
+
+	preventDefault: function() {
+		var e = this.originalEvent;
+
+		this.isDefaultPrevented = returnTrue;
+
+		if ( e && e.preventDefault ) {
+			e.preventDefault();
+		}
+	},
+	stopPropagation: function() {
+		var e = this.originalEvent;
+
+		this.isPropagationStopped = returnTrue;
+
+		if ( e && e.stopPropagation ) {
+			e.stopPropagation();
+		}
+	},
+	stopImmediatePropagation: function() {
+		this.isImmediatePropagationStopped = returnTrue;
+		this.stopPropagation();
+	}
+};
+
+// Create mouseenter/leave events using mouseover/out and event-time checks
+// Support: Chrome 15+
+jQuery.each({
+	mouseenter: "mouseover",
+	mouseleave: "mouseout"
+}, function( orig, fix ) {
+	jQuery.event.special[ orig ] = {
+		delegateType: fix,
+		bindType: fix,
+
+		handle: function( event ) {
+			var ret,
+				target = this,
+				related = event.relatedTarget,
+				handleObj = event.handleObj;
+
+			// For mousenter/leave call the handler if related is outside the target.
+			// NB: No relatedTarget if the mouse left/entered the browser window
+			if ( !related || (related !== target && !jQuery.contains( target, related )) ) {
+				event.type = handleObj.origType;
+				ret = handleObj.handler.apply( this, arguments );
+				event.type = fix;
+			}
+			return ret;
+		}
+	};
+});
+
+// Create "bubbling" focus and blur events
+// Support: Firefox, Chrome, Safari
+if ( !jQuery.support.focusinBubbles ) {
+	jQuery.each({ focus: "focusin", blur: "focusout" }, function( orig, fix ) {
+
+		// Attach a single capturing handler while someone wants focusin/focusout
+		var attaches = 0,
+			handler = function( event ) {
+				jQuery.event.simulate( fix, event.target, jQuery.event.fix( event ), true );
+			};
+
+		jQuery.event.special[ fix ] = {
+			setup: function() {
+				if ( attaches++ === 0 ) {
+					document.addEventListener( orig, handler, true );
+				}
+			},
+			teardown: function() {
+				if ( --attaches === 0 ) {
+					document.removeEventListener( orig, handler, true );
+				}
+			}
+		};
+	});
+}
+
+jQuery.fn.extend({
+
+	on: function( types, selector, data, fn, /*INTERNAL*/ one ) {
+		var origFn, type;
+
+		// Types can be a map of types/handlers
+		if ( typeof types === "object" ) {
+			// ( types-Object, selector, data )
+			if ( typeof selector !== "string" ) {
+				// ( types-Object, data )
+				data = data || selector;
+				selector = undefined;
+			}
+			for ( type in types ) {
+				this.on( type, selector, data, types[ type ], one );
+			}
+			return this;
+		}
+
+		if ( data == null && fn == null ) {
+			// ( types, fn )
+			fn = selector;
+			data = selector = undefined;
+		} else if ( fn == null ) {
+			if ( typeof selector === "string" ) {
+				// ( types, selector, fn )
+				fn = data;
+				data = undefined;
+			} else {
+				// ( types, data, fn )
+				fn = data;
+				data = selector;
+				selector = undefined;
+			}
+		}
+		if ( fn === false ) {
+			fn = returnFalse;
+		} else if ( !fn ) {
+			return this;
+		}
+
+		if ( one === 1 ) {
+			origFn = fn;
+			fn = function( event ) {
+				// Can use an empty set, since event contains the info
+				jQuery().off( event );
+				return origFn.apply( this, arguments );
+			};
+			// Use same guid so caller can remove using origFn
+			fn.guid = origFn.guid || ( origFn.guid = jQuery.guid++ );
+		}
+		return this.each( function() {
+			jQuery.event.add( this, types, fn, data, selector );
+		});
+	},
+	one: function( types, selector, data, fn ) {
+		return this.on( types, selector, data, fn, 1 );
+	},
+	off: function( types, selector, fn ) {
+		var handleObj, type;
+		if ( types && types.preventDefault && types.handleObj ) {
+			// ( event )  dispatched jQuery.Event
+			handleObj = types.handleObj;
+			jQuery( types.delegateTarget ).off(
+				handleObj.namespace ? handleObj.origType + "." + handleObj.namespace : handleObj.origType,
+				handleObj.selector,
+				handleObj.handler
+			);
+			return this;
+		}
+		if ( typeof types === "object" ) {
+			// ( types-object [, selector] )
+			for ( type in types ) {
+				this.off( type, selector, types[ type ] );
+			}
+			return this;
+		}
+		if ( selector === false || typeof selector === "function" ) {
+			// ( types [, fn] )
+			fn = selector;
+			selector = undefined;
+		}
+		if ( fn === false ) {
+			fn = returnFalse;
+		}
+		return this.each(function() {
+			jQuery.event.remove( this, types, fn, selector );
+		});
+	},
+
+	trigger: function( type, data ) {
+		return this.each(function() {
+			jQuery.event.trigger( type, data, this );
+		});
+	},
+	triggerHandler: function( type, data ) {
+		var elem = this[0];
+		if ( elem ) {
+			return jQuery.event.trigger( type, data, elem, true );
+		}
+	}
+});
+var isSimple = /^.[^:#\[\.,]*$/,
+	rparentsprev = /^(?:parents|prev(?:Until|All))/,
+	rneedsContext = jQuery.expr.match.needsContext,
+	// methods guaranteed to produce a unique set when starting from a unique set
+	guaranteedUnique = {
+		children: true,
+		contents: true,
+		next: true,
+		prev: true
+	};
+
+jQuery.fn.extend({
+	find: function( selector ) {
+		var i,
+			ret = [],
+			self = this,
+			len = self.length;
+
+		if ( typeof selector !== "string" ) {
+			return this.pushStack( jQuery( selector ).filter(function() {
+				for ( i = 0; i < len; i++ ) {
+					if ( jQuery.contains( self[ i ], this ) ) {
+						return true;
+					}
+				}
+			}) );
+		}
+
+		for ( i = 0; i < len; i++ ) {
+			jQuery.find( selector, self[ i ], ret );
+		}
+
+		// Needed because $( selector, context ) becomes $( context ).find( selector )
+		ret = this.pushStack( len > 1 ? jQuery.unique( ret ) : ret );
+		ret.selector = this.selector ? this.selector + " " + selector : selector;
+		return ret;
+	},
+
+	has: function( target ) {
+		var targets = jQuery( target, this ),
+			l = targets.length;
+
+		return this.filter(function() {
+			var i = 0;
+			for ( ; i < l; i++ ) {
+				if ( jQuery.contains( this, targets[i] ) ) {
+					return true;
+				}
+			}
+		});
+	},
+
+	not: function( selector ) {
+		return this.pushStack( winnow(this, selector || [], true) );
+	},
+
+	filter: function( selector ) {
+		return this.pushStack( winnow(this, selector || [], false) );
+	},
+
+	is: function( selector ) {
+		return !!winnow(
+			this,
+
+			// If this is a positional/relative selector, check membership in the returned set
+			// so $("p:first").is("p:last") won't return true for a doc with two "p".
+			typeof selector === "string" && rneedsContext.test( selector ) ?
+				jQuery( selector ) :
+				selector || [],
+			false
+		).length;
+	},
+
+	closest: function( selectors, context ) {
+		var cur,
+			i = 0,
+			l = this.length,
+			matched = [],
+			pos = ( rneedsContext.test( selectors ) || typeof selectors !== "string" ) ?
+				jQuery( selectors, context || this.context ) :
+				0;
+
+		for ( ; i < l; i++ ) {
+			for ( cur = this[i]; cur && cur !== context; cur = cur.parentNode ) {
+				// Always skip document fragments
+				if ( cur.nodeType < 11 && (pos ?
+					pos.index(cur) > -1 :
+
+					// Don't pass non-elements to Sizzle
+					cur.nodeType === 1 &&
+						jQuery.find.matchesSelector(cur, selectors)) ) {
+
+					cur = matched.push( cur );
+					break;
+				}
+			}
+		}
+
+		return this.pushStack( matched.length > 1 ? jQuery.unique( matched ) : matched );
+	},
+
+	// Determine the position of an element within
+	// the matched set of elements
+	index: function( elem ) {
+
+		// No argument, return index in parent
+		if ( !elem ) {
+			return ( this[ 0 ] && this[ 0 ].parentNode ) ? this.first().prevAll().length : -1;
+		}
+
+		// index in selector
+		if ( typeof elem === "string" ) {
+			return core_indexOf.call( jQuery( elem ), this[ 0 ] );
+		}
+
+		// Locate the position of the desired element
+		return core_indexOf.call( this,
+
+			// If it receives a jQuery object, the first element is used
+			elem.jquery ? elem[ 0 ] : elem
+		);
+	},
+
+	add: function( selector, context ) {
+		var set = typeof selector === "string" ?
+				jQuery( selector, context ) :
+				jQuery.makeArray( selector && selector.nodeType ? [ selector ] : selector ),
+			all = jQuery.merge( this.get(), set );
+
+		return this.pushStack( jQuery.unique(all) );
+	},
+
+	addBack: function( selector ) {
+		return this.add( selector == null ?
+			this.prevObject : this.prevObject.filter(selector)
+		);
+	}
+});
+
+function sibling( cur, dir ) {
+	while ( (cur = cur[dir]) && cur.nodeType !== 1 ) {}
+
+	return cur;
+}
+
+jQuery.each({
+	parent: function( elem ) {
+		var parent = elem.parentNode;
+		return parent && parent.nodeType !== 11 ? parent : null;
+	},
+	parents: function( elem ) {
+		return jQuery.dir( elem, "parentNode" );
+	},
+	parentsUntil: function( elem, i, until ) {
+		return jQuery.dir( elem, "parentNode", until );
+	},
+	next: function( elem ) {
+		return sibling( elem, "nextSibling" );
+	},
+	prev: function( elem ) {
+		return sibling( elem, "previousSibling" );
+	},
+	nextAll: function( elem ) {
+		return jQuery.dir( elem, "nextSibling" );
+	},
+	prevAll: function( elem ) {
+		return jQuery.dir( elem, "previousSibling" );
+	},
+	nextUntil: function( elem, i, until ) {
+		return jQuery.dir( elem, "nextSibling", until );
+	},
+	prevUntil: function( elem, i, until ) {
+		return jQuery.dir( elem, "previousSibling", until );
+	},
+	siblings: function( elem ) {
+		return jQuery.sibling( ( elem.parentNode || {} ).firstChild, elem );
+	},
+	children: function( elem ) {
+		return jQuery.sibling( elem.firstChild );
+	},
+	contents: function( elem ) {
+		return elem.contentDocument || jQuery.merge( [], elem.childNodes );
+	}
+}, function( name, fn ) {
+	jQuery.fn[ name ] = function( until, selector ) {
+		var matched = jQuery.map( this, fn, until );
+
+		if ( name.slice( -5 ) !== "Until" ) {
+			selector = until;
+		}
+
+		if ( selector && typeof selector === "string" ) {
+			matched = jQuery.filter( selector, matched );
+		}
+
+		if ( this.length > 1 ) {
+			// Remove duplicates
+			if ( !guaranteedUnique[ name ] ) {
+				jQuery.unique( matched );
+			}
+
+			// Reverse order for parents* and prev-derivatives
+			if ( rparentsprev.test( name ) ) {
+				matched.reverse();
+			}
+		}
+
+		return this.pushStack( matched );
+	};
+});
+
+jQuery.extend({
+	filter: function( expr, elems, not ) {
+		var elem = elems[ 0 ];
+
+		if ( not ) {
+			expr = ":not(" + expr + ")";
+		}
+
+		return elems.length === 1 && elem.nodeType === 1 ?
+			jQuery.find.matchesSelector( elem, expr ) ? [ elem ] : [] :
+			jQuery.find.matches( expr, jQuery.grep( elems, function( elem ) {
+				return elem.nodeType === 1;
+			}));
+	},
+
+	dir: function( elem, dir, until ) {
+		var matched = [],
+			truncate = until !== undefined;
+
+		while ( (elem = elem[ dir ]) && elem.nodeType !== 9 ) {
+			if ( elem.nodeType === 1 ) {
+				if ( truncate && jQuery( elem ).is( until ) ) {
+					break;
+				}
+				matched.push( elem );
+			}
+		}
+		return matched;
+	},
+
+	sibling: function( n, elem ) {
+		var matched = [];
+
+		for ( ; n; n = n.nextSibling ) {
+			if ( n.nodeType === 1 && n !== elem ) {
+				matched.push( n );
+			}
+		}
+
+		return matched;
+	}
+});
+
+// Implement the identical functionality for filter and not
+function winnow( elements, qualifier, not ) {
+	if ( jQuery.isFunction( qualifier ) ) {
+		return jQuery.grep( elements, function( elem, i ) {
+			/* jshint -W018 */
+			return !!qualifier.call( elem, i, elem ) !== not;
+		});
+
+	}
+
+	if ( qualifier.nodeType ) {
+		return jQuery.grep( elements, function( elem ) {
+			return ( elem === qualifier ) !== not;
+		});
+
+	}
+
+	if ( typeof qualifier === "string" ) {
+		if ( isSimple.test( qualifier ) ) {
+			return jQuery.filter( qualifier, elements, not );
+		}
+
+		qualifier = jQuery.filter( qualifier, elements );
+	}
+
+	return jQuery.grep( elements, function( elem ) {
+		return ( core_indexOf.call( qualifier, elem ) >= 0 ) !== not;
+	});
+}
+var rxhtmlTag = /<(?!area|br|col|embed|hr|img|input|link|meta|param)(([\w:]+)[^>]*)\/>/gi,
+	rtagName = /<([\w:]+)/,
+	rhtml = /<|&#?\w+;/,
+	rnoInnerhtml = /<(?:script|style|link)/i,
+	manipulation_rcheckableType = /^(?:checkbox|radio)$/i,
+	// checked="checked" or checked
+	rchecked = /checked\s*(?:[^=]|=\s*.checked.)/i,
+	rscriptType = /^$|\/(?:java|ecma)script/i,
+	rscriptTypeMasked = /^true\/(.*)/,
+	rcleanScript = /^\s*<!(?:\[CDATA\[|--)|(?:\]\]|--)>\s*$/g,
+
+	// We have to close these tags to support XHTML (#13200)
+	wrapMap = {
+
+		// Support: IE 9
+		option: [ 1, "<select multiple='multiple'>", "</select>" ],
+
+		thead: [ 1, "<table>", "</table>" ],
+		col: [ 2, "<table><colgroup>", "</colgroup></table>" ],
+		tr: [ 2, "<table><tbody>", "</tbody></table>" ],
+		td: [ 3, "<table><tbody><tr>", "</tr></tbody></table>" ],
+
+		_default: [ 0, "", "" ]
+	};
+
+// Support: IE 9
+wrapMap.optgroup = wrapMap.option;
+
+wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead;
+wrapMap.th = wrapMap.td;
+
+jQuery.fn.extend({
+	text: function( value ) {
+		return jQuery.access( this, function( value ) {
+			return value === undefined ?
+				jQuery.text( this ) :
+				this.empty().append( ( this[ 0 ] && this[ 0 ].ownerDocument || document ).createTextNode( value ) );
+		}, null, value, arguments.length );
+	},
+
+	append: function() {
+		return this.domManip( arguments, function( elem ) {
+			if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {
+				var target = manipulationTarget( this, elem );
+				target.appendChild( elem );
+			}
+		});
+	},
+
+	prepend: function() {
+		return this.domManip( arguments, function( elem ) {
+			if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {
+				var target = manipulationTarget( this, elem );
+				target.insertBefore( elem, target.firstChild );
+			}
+		});
+	},
+
+	before: function() {
+		return this.domManip( arguments, function( elem ) {
+			if ( this.parentNode ) {
+				this.parentNode.insertBefore( elem, this );
+			}
+		});
+	},
+
+	after: function() {
+		return this.domManip( arguments, function( elem ) {
+			if ( this.parentNode ) {
+				this.parentNode.insertBefore( elem, this.nextSibling );
+			}
+		});
+	},
+
+	// keepData is for internal use only--do not document
+	remove: function( selector, keepData ) {
+		var elem,
+			elems = selector ? jQuery.filter( selector, this ) : this,
+			i = 0;
+
+		for ( ; (elem = elems[i]) != null; i++ ) {
+			if ( !keepData && elem.nodeType === 1 ) {
+				jQuery.cleanData( getAll( elem ) );
+			}
+
+			if ( elem.parentNode ) {
+				if ( keepData && jQuery.contains( elem.ownerDocument, elem ) ) {
+					setGlobalEval( getAll( elem, "script" ) );
+				}
+				elem.parentNode.removeChild( elem );
+			}
+		}
+
+		return this;
+	},
+
+	empty: function() {
+		var elem,
+			i = 0;
+
+		for ( ; (elem = this[i]) != null; i++ ) {
+			if ( elem.nodeType === 1 ) {
+
+				// Prevent memory leaks
+				jQuery.cleanData( getAll( elem, false ) );
+
+				// Remove any remaining nodes
+				elem.textContent = "";
+			}
+		}
+
+		return this;
+	},
+
+	clone: function( dataAndEvents, deepDataAndEvents ) {
+		dataAndEvents = dataAndEvents == null ? false : dataAndEvents;
+		deepDataAndEvents = deepDataAndEvents == null ? dataAndEvents : deepDataAndEvents;
+
+		return this.map( function () {
+			return jQuery.clone( this, dataAndEvents, deepDataAndEvents );
+		});
+	},
+
+	html: function( value ) {
+		return jQuery.access( this, function( value ) {
+			var elem = this[ 0 ] || {},
+				i = 0,
+				l = this.length;
+
+			if ( value === undefined && elem.nodeType === 1 ) {
+				return elem.innerHTML;
+			}
+
+			// See if we can take a shortcut and just use innerHTML
+			if ( typeof value === "string" && !rnoInnerhtml.test( value ) &&
+				!wrapMap[ ( rtagName.exec( value ) || [ "", "" ] )[ 1 ].toLowerCase() ] ) {
+
+				value = value.replace( rxhtmlTag, "<$1></$2>" );
+
+				try {
+					for ( ; i < l; i++ ) {
+						elem = this[ i ] || {};
+
+						// Remove element nodes and prevent memory leaks
+						if ( elem.nodeType === 1 ) {
+							jQuery.cleanData( getAll( elem, false ) );
+							elem.innerHTML = value;
+						}
+					}
+
+					elem = 0;
+
+				// If using innerHTML throws an exception, use the fallback method
+				} catch( e ) {}
+			}
+
+			if ( elem ) {
+				this.empty().append( value );
+			}
+		}, null, value, arguments.length );
+	},
+
+	replaceWith: function() {
+		var
+			// Snapshot the DOM in case .domManip sweeps something relevant into its fragment
+			args = jQuery.map( this, function( elem ) {
+				return [ elem.nextSibling, elem.parentNode ];
+			}),
+			i = 0;
+
+		// Make the changes, replacing each context element with the new content
+		this.domManip( arguments, function( elem ) {
+			var next = args[ i++ ],
+				parent = args[ i++ ];
+
+			if ( parent ) {
+				// Don't use the snapshot next if it has moved (#13810)
+				if ( next && next.parentNode !== parent ) {
+					next = this.nextSibling;
+				}
+				jQuery( this ).remove();
+				parent.insertBefore( elem, next );
+			}
+		// Allow new content to include elements from the context set
+		}, true );
+
+		// Force removal if there was no new content (e.g., from empty arguments)
+		return i ? this : this.remove();
+	},
+
+	detach: function( selector ) {
+		return this.remove( selector, true );
+	},
+
+	domManip: function( args, callback, allowIntersection ) {
+
+		// Flatten any nested arrays
+		args = core_concat.apply( [], args );
+
+		var fragment, first, scripts, hasScripts, node, doc,
+			i = 0,
+			l = this.length,
+			set = this,
+			iNoClone = l - 1,
+			value = args[ 0 ],
+			isFunction = jQuery.isFunction( value );
+
+		// We can't cloneNode fragments that contain checked, in WebKit
+		if ( isFunction || !( l <= 1 || typeof value !== "string" || jQuery.support.checkClone || !rchecked.test( value ) ) ) {
+			return this.each(function( index ) {
+				var self = set.eq( index );
+				if ( isFunction ) {
+					args[ 0 ] = value.call( this, index, self.html() );
+				}
+				self.domManip( args, callback, allowIntersection );
+			});
+		}
+
+		if ( l ) {
+			fragment = jQuery.buildFragment( args, this[ 0 ].ownerDocument, false, !allowIntersection && this );
+			first = fragment.firstChild;
+
+			if ( fragment.childNodes.length === 1 ) {
+				fragment = first;
+			}
+
+			if ( first ) {
+				scripts = jQuery.map( getAll( fragment, "script" ), disableScript );
+				hasScripts = scripts.length;
+
+				// Use the original fragment for the last item instead of the first because it can end up
+				// being emptied incorrectly in certain situations (#8070).
+				for ( ; i < l; i++ ) {
+					node = fragment;
+
+					if ( i !== iNoClone ) {
+						node = jQuery.clone( node, true, true );
+
+						// Keep references to cloned scripts for later restoration
+						if ( hasScripts ) {
+							// Support: QtWebKit
+							// jQuery.merge because core_push.apply(_, arraylike) throws
+							jQuery.merge( scripts, getAll( node, "script" ) );
+						}
+					}
+
+					callback.call( this[ i ], node, i );
+				}
+
+				if ( hasScripts ) {
+					doc = scripts[ scripts.length - 1 ].ownerDocument;
+
+					// Reenable scripts
+					jQuery.map( scripts, restoreScript );
+
+					// Evaluate executable scripts on first document insertion
+					for ( i = 0; i < hasScripts; i++ ) {
+						node = scripts[ i ];
+						if ( rscriptType.test( node.type || "" ) &&
+							!data_priv.access( node, "globalEval" ) && jQuery.contains( doc, node ) ) {
+
+							if ( node.src ) {
+								// Hope ajax is available...
+								jQuery._evalUrl( node.src );
+							} else {
+								jQuery.globalEval( node.textContent.replace( rcleanScript, "" ) );
+							}
+						}
+					}
+				}
+			}
+		}
+
+		return this;
+	}
+});
+
+jQuery.each({
+	appendTo: "append",
+	prependTo: "prepend",
+	insertBefore: "before",
+	insertAfter: "after",
+	replaceAll: "replaceWith"
+}, function( name, original ) {
+	jQuery.fn[ name ] = function( selector ) {
+		var elems,
+			ret = [],
+			insert = jQuery( selector ),
+			last = insert.length - 1,
+			i = 0;
+
+		for ( ; i <= last; i++ ) {
+			elems = i === last ? this : this.clone( true );
+			jQuery( insert[ i ] )[ original ]( elems );
+
+			// Support: QtWebKit
+			// .get() because core_push.apply(_, arraylike) throws
+			core_push.apply( ret, elems.get() );
+		}
+
+		return this.pushStack( ret );
+	};
+});
+
+jQuery.extend({
+	clone: function( elem, dataAndEvents, deepDataAndEvents ) {
+		var i, l, srcElements, destElements,
+			clone = elem.cloneNode( true ),
+			inPage = jQuery.contains( elem.ownerDocument, elem );
+
+		// Support: IE >= 9
+		// Fix Cloning issues
+		if ( !jQuery.support.noCloneChecked && ( elem.nodeType === 1 || elem.nodeType === 11 ) && !jQuery.isXMLDoc( elem ) ) {
+
+			// We eschew Sizzle here for performance reasons: http://jsperf.com/getall-vs-sizzle/2
+			destElements = getAll( clone );
+			srcElements = getAll( elem );
+
+			for ( i = 0, l = srcElements.length; i < l; i++ ) {
+				fixInput( srcElements[ i ], destElements[ i ] );
+			}
+		}
+
+		// Copy the events from the original to the clone
+		if ( dataAndEvents ) {
+			if ( deepDataAndEvents ) {
+				srcElements = srcElements || getAll( elem );
+				destElements = destElements || getAll( clone );
+
+				for ( i = 0, l = srcElements.length; i < l; i++ ) {
+					cloneCopyEvent( srcElements[ i ], destElements[ i ] );
+				}
+			} else {
+				cloneCopyEvent( elem, clone );
+			}
+		}
+
+		// Preserve script evaluation history
+		destElements = getAll( clone, "script" );
+		if ( destElements.length > 0 ) {
+			setGlobalEval( destElements, !inPage && getAll( elem, "script" ) );
+		}
+
+		// Return the cloned set
+		return clone;
+	},
+
+	buildFragment: function( elems, context, scripts, selection ) {
+		var elem, tmp, tag, wrap, contains, j,
+			i = 0,
+			l = elems.length,
+			fragment = context.createDocumentFragment(),
+			nodes = [];
+
+		for ( ; i < l; i++ ) {
+			elem = elems[ i ];
+
+			if ( elem || elem === 0 ) {
+
+				// Add nodes directly
+				if ( jQuery.type( elem ) === "object" ) {
+					// Support: QtWebKit
+					// jQuery.merge because core_push.apply(_, arraylike) throws
+					jQuery.merge( nodes, elem.nodeType ? [ elem ] : elem );
+
+				// Convert non-html into a text node
+				} else if ( !rhtml.test( elem ) ) {
+					nodes.push( context.createTextNode( elem ) );
+
+				// Convert html into DOM nodes
+				} else {
+					tmp = tmp || fragment.appendChild( context.createElement("div") );
+
+					// Deserialize a standard representation
+					tag = ( rtagName.exec( elem ) || ["", ""] )[ 1 ].toLowerCase();
+					wrap = wrapMap[ tag ] || wrapMap._default;
+					tmp.innerHTML = wrap[ 1 ] + elem.replace( rxhtmlTag, "<$1></$2>" ) + wrap[ 2 ];
+
+					// Descend through wrappers to the right content
+					j = wrap[ 0 ];
+					while ( j-- ) {
+						tmp = tmp.lastChild;
+					}
+
+					// Support: QtWebKit
+					// jQuery.merge because core_push.apply(_, arraylike) throws
+					jQuery.merge( nodes, tmp.childNodes );
+
+					// Remember the top-level container
+					tmp = fragment.firstChild;
+
+					// Fixes #12346
+					// Support: Webkit, IE
+					tmp.textContent = "";
+				}
+			}
+		}
+
+		// Remove wrapper from fragment
+		fragment.textContent = "";
+
+		i = 0;
+		while ( (elem = nodes[ i++ ]) ) {
+
+			// #4087 - If origin and destination elements are the same, and this is
+			// that element, do not do anything
+			if ( selection && jQuery.inArray( elem, selection ) !== -1 ) {
+				continue;
+			}
+
+			contains = jQuery.contains( elem.ownerDocument, elem );
+
+			// Append to fragment
+			tmp = getAll( fragment.appendChild( elem ), "script" );
+
+			// Preserve script evaluation history
+			if ( contains ) {
+				setGlobalEval( tmp );
+			}
+
+			// Capture executables
+			if ( scripts ) {
+				j = 0;
+				while ( (elem = tmp[ j++ ]) ) {
+					if ( rscriptType.test( elem.type || "" ) ) {
+						scripts.push( elem );
+					}
+				}
+			}
+		}
+
+		return fragment;
+	},
+
+	cleanData: function( elems ) {
+		var data, elem, events, type, key, j,
+			special = jQuery.event.special,
+			i = 0;
+
+		for ( ; (elem = elems[ i ]) !== undefined; i++ ) {
+			if ( Data.accepts( elem ) ) {
+				key = elem[ data_priv.expando ];
+
+				if ( key && (data = data_priv.cache[ key ]) ) {
+					events = Object.keys( data.events || {} );
+					if ( events.length ) {
+						for ( j = 0; (type = events[j]) !== undefined; j++ ) {
+							if ( special[ type ] ) {
+								jQuery.event.remove( elem, type );
+
+							// This is a shortcut to avoid jQuery.event.remove's overhead
+							} else {
+								jQuery.removeEvent( elem, type, data.handle );
+							}
+						}
+					}
+					if ( data_priv.cache[ key ] ) {
+						// Discard any remaining `private` data
+						delete data_priv.cache[ key ];
+					}
+				}
+			}
+			// Discard any remaining `user` data
+			delete data_user.cache[ elem[ data_user.expando ] ];
+		}
+	},
+
+	_evalUrl: function( url ) {
+		return jQuery.ajax({
+			url: url,
+			type: "GET",
+			dataType: "script",
+			async: false,
+			global: false,
+			"throws": true
+		});
+	}
+});
+
+// Support: 1.x compatibility
+// Manipulating tables requires a tbody
+function manipulationTarget( elem, content ) {
+	return jQuery.nodeName( elem, "table" ) &&
+		jQuery.nodeName( content.nodeType === 1 ? content : content.firstChild, "tr" ) ?
+
+		elem.getElementsByTagName("tbody")[0] ||
+			elem.appendChild( elem.ownerDocument.createElement("tbody") ) :
+		elem;
+}
+
+// Replace/restore the type attribute of script elements for safe DOM manipulation
+function disableScript( elem ) {
+	elem.type = (elem.getAttribute("type") !== null) + "/" + elem.type;
+	return elem;
+}
+function restoreScript( elem ) {
+	var match = rscriptTypeMasked.exec( elem.type );
+
+	if ( match ) {
+		elem.type = match[ 1 ];
+	} else {
+		elem.removeAttribute("type");
+	}
+
+	return elem;
+}
+
+// Mark scripts as having already been evaluated
+function setGlobalEval( elems, refElements ) {
+	var l = elems.length,
+		i = 0;
+
+	for ( ; i < l; i++ ) {
+		data_priv.set(
+			elems[ i ], "globalEval", !refElements || data_priv.get( refElements[ i ], "globalEval" )
+		);
+	}
+}
+
+function cloneCopyEvent( src, dest ) {
+	var i, l, type, pdataOld, pdataCur, udataOld, udataCur, events;
+
+	if ( dest.nodeType !== 1 ) {
+		return;
+	}
+
+	// 1. Copy private data: events, handlers, etc.
+	if ( data_priv.hasData( src ) ) {
+		pdataOld = data_priv.access( src );
+		pdataCur = data_priv.set( dest, pdataOld );
+		events = pdataOld.events;
+
+		if ( events ) {
+			delete pdataCur.handle;
+			pdataCur.events = {};
+
+			for ( type in events ) {
+				for ( i = 0, l = events[ type ].length; i < l; i++ ) {
+					jQuery.event.add( dest, type, events[ type ][ i ] );
+				}
+			}
+		}
+	}
+
+	// 2. Copy user data
+	if ( data_user.hasData( src ) ) {
+		udataOld = data_user.access( src );
+		udataCur = jQuery.extend( {}, udataOld );
+
+		data_user.set( dest, udataCur );
+	}
+}
+
+
+function getAll( context, tag ) {
+	var ret = context.getElementsByTagName ? context.getElementsByTagName( tag || "*" ) :
+			context.querySelectorAll ? context.querySelectorAll( tag || "*" ) :
+			[];
+
+	return tag === undefined || tag && jQuery.nodeName( context, tag ) ?
+		jQuery.merge( [ context ], ret ) :
+		ret;
+}
+
+// Support: IE >= 9
+function fixInput( src, dest ) {
+	var nodeName = dest.nodeName.toLowerCase();
+
+	// Fails to persist the checked state of a cloned checkbox or radio button.
+	if ( nodeName === "input" && manipulation_rcheckableType.test( src.type ) ) {
+		dest.checked = src.checked;
+
+	// Fails to return the selected option to the default selected state when cloning options
+	} else if ( nodeName === "input" || nodeName === "textarea" ) {
+		dest.defaultValue = src.defaultValue;
+	}
+}
+jQuery.fn.extend({
+	wrapAll: function( html ) {
+		var wrap;
+
+		if ( jQuery.isFunction( html ) ) {
+			return this.each(function( i ) {
+				jQuery( this ).wrapAll( html.call(this, i) );
+			});
+		}
+
+		if ( this[ 0 ] ) {
+
+			// The elements to wrap the target around
+			wrap = jQuery( html, this[ 0 ].ownerDocument ).eq( 0 ).clone( true );
+
+			if ( this[ 0 ].parentNode ) {
+				wrap.insertBefore( this[ 0 ] );
+			}
+
+			wrap.map(function() {
+				var elem = this;
+
+				while ( elem.firstElementChild ) {
+					elem = elem.firstElementChild;
+				}
+
+				return elem;
+			}).append( this );
+		}
+
+		return this;
+	},
+
+	wrapInner: function( html ) {
+		if ( jQuery.isFunction( html ) ) {
+			return this.each(function( i ) {
+				jQuery( this ).wrapInner( html.call(this, i) );
+			});
+		}
+
+		return this.each(function() {
+			var self = jQuery( this ),
+				contents = self.contents();
+
+			if ( contents.length ) {
+				contents.wrapAll( html );
+
+			} else {
+				self.append( html );
+			}
+		});
+	},
+
+	wrap: function( html ) {
+		var isFunction = jQuery.isFunction( html );
+
+		return this.each(function( i ) {
+			jQuery( this ).wrapAll( isFunction ? html.call(this, i) : html );
+		});
+	},
+
+	unwrap: function() {
+		return this.parent().each(function() {
+			if ( !jQuery.nodeName( this, "body" ) ) {
+				jQuery( this ).replaceWith( this.childNodes );
+			}
+		}).end();
+	}
+});
+var curCSS, iframe,
+	// swappable if display is none or starts with table except "table", "table-cell", or "table-caption"
+	// see here for display values: https://developer.mozilla.org/en-US/docs/CSS/display
+	rdisplayswap = /^(none|table(?!-c[ea]).+)/,
+	rmargin = /^margin/,
+	rnumsplit = new RegExp( "^(" + core_pnum + ")(.*)$", "i" ),
+	rnumnonpx = new RegExp( "^(" + core_pnum + ")(?!px)[a-z%]+$", "i" ),
+	rrelNum = new RegExp( "^([+-])=(" + core_pnum + ")", "i" ),
+	elemdisplay = { BODY: "block" },
+
+	cssShow = { position: "absolute", visibility: "hidden", display: "block" },
+	cssNormalTransform = {
+		letterSpacing: 0,
+		fontWeight: 400
+	},
+
+	cssExpand = [ "Top", "Right", "Bottom", "Left" ],
+	cssPrefixes = [ "Webkit", "O", "Moz", "ms" ];
+
+// return a css property mapped to a potentially vendor prefixed property
+function vendorPropName( style, name ) {
+
+	// shortcut for names that are not vendor prefixed
+	if ( name in style ) {
+		return name;
+	}
+
+	// check for vendor prefixed names
+	var capName = name.charAt(0).toUpperCase() + name.slice(1),
+		origName = name,
+		i = cssPrefixes.length;
+
+	while ( i-- ) {
+		name = cssPrefixes[ i ] + capName;
+		if ( name in style ) {
+			return name;
+		}
+	}
+
+	return origName;
+}
+
+function isHidden( elem, el ) {
+	// isHidden might be called from jQuery#filter function;
+	// in that case, element will be second argument
+	elem = el || elem;
+	return jQuery.css( elem, "display" ) === "none" || !jQuery.contains( elem.ownerDocument, elem );
+}
+
+// NOTE: we've included the "window" in window.getComputedStyle
+// because jsdom on node.js will break without it.
+function getStyles( elem ) {
+	return window.getComputedStyle( elem, null );
+}
+
+function showHide( elements, show ) {
+	var display, elem, hidden,
+		values = [],
+		index = 0,
+		length = elements.length;
+
+	for ( ; index < length; index++ ) {
+		elem = elements[ index ];
+		if ( !elem.style ) {
+			continue;
+		}
+
+		values[ index ] = data_priv.get( elem, "olddisplay" );
+		display = elem.style.display;
+		if ( show ) {
+			// Reset the inline display of this element to learn if it is
+			// being hidden by cascaded rules or not
+			if ( !values[ index ] && display === "none" ) {
+				elem.style.display = "";
+			}
+
+			// Set elements which have been overridden with display: none
+			// in a stylesheet to whatever the default browser style is
+			// for such an element
+			if ( elem.style.display === "" && isHidden( elem ) ) {
+				values[ index ] = data_priv.access( elem, "olddisplay", css_defaultDisplay(elem.nodeName) );
+			}
+		} else {
+
+			if ( !values[ index ] ) {
+				hidden = isHidden( elem );
+
+				if ( display && display !== "none" || !hidden ) {
+					data_priv.set( elem, "olddisplay", hidden ? display : jQuery.css(elem, "display") );
+				}
+			}
+		}
+	}
+
+	// Set the display of most of the elements in a second loop
+	// to avoid the constant reflow
+	for ( index = 0; index < length; index++ ) {
+		elem = elements[ index ];
+		if ( !elem.style ) {
+			continue;
+		}
+		if ( !show || elem.style.display === "none" || elem.style.display === "" ) {
+			elem.style.display = show ? values[ index ] || "" : "none";
+		}
+	}
+
+	return elements;
+}
+
+jQuery.fn.extend({
+	css: function( name, value ) {
+		return jQuery.access( this, function( elem, name, value ) {
+			var styles, len,
+				map = {},
+				i = 0;
+
+			if ( jQuery.isArray( name ) ) {
+				styles = getStyles( elem );
+				len = name.length;
+
+				for ( ; i < len; i++ ) {
+					map[ name[ i ] ] = jQuery.css( elem, name[ i ], false, styles );
+				}
+
+				return map;
+			}
+
+			return value !== undefined ?
+				jQuery.style( elem, name, value ) :
+				jQuery.css( elem, name );
+		}, name, value, arguments.length > 1 );
+	},
+	show: function() {
+		return showHide( this, true );
+	},
+	hide: function() {
+		return showHide( this );
+	},
+	toggle: function( state ) {
+		if ( typeof state === "boolean" ) {
+			return state ? this.show() : this.hide();
+		}
+
+		return this.each(function() {
+			if ( isHidden( this ) ) {
+				jQuery( this ).show();
+			} else {
+				jQuery( this ).hide();
+			}
+		});
+	}
+});
+
+jQuery.extend({
+	// Add in style property hooks for overriding the default
+	// behavior of getting and setting a style property
+	cssHooks: {
+		opacity: {
+			get: function( elem, computed ) {
+				if ( computed ) {
+					// We should always get a number back from opacity
+					var ret = curCSS( elem, "opacity" );
+					return ret === "" ? "1" : ret;
+				}
+			}
+		}
+	},
+
+	// Don't automatically add "px" to these possibly-unitless properties
+	cssNumber: {
+		"columnCount": true,
+		"fillOpacity": true,
+		"fontWeight": true,
+		"lineHeight": true,
+		"opacity": true,
+		"order": true,
+		"orphans": true,
+		"widows": true,
+		"zIndex": true,
+		"zoom": true
+	},
+
+	// Add in properties whose names you wish to fix before
+	// setting or getting the value
+	cssProps: {
+		// normalize float css property
+		"float": "cssFloat"
+	},
+
+	// Get and set the style property on a DOM Node
+	style: function( elem, name, value, extra ) {
+		// Don't set styles on text and comment nodes
+		if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style ) {
+			return;
+		}
+
+		// Make sure that we're working with the right name
+		var ret, type, hooks,
+			origName = jQuery.camelCase( name ),
+			style = elem.style;
+
+		name = jQuery.cssProps[ origName ] || ( jQuery.cssProps[ origName ] = vendorPropName( style, origName ) );
+
+		// gets hook for the prefixed version
+		// followed by the unprefixed version
+		hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];
+
+		// Check if we're setting a value
+		if ( value !== undefined ) {
+			type = typeof value;
+
+			// convert relative number strings (+= or -=) to relative numbers. #7345
+			if ( type === "string" && (ret = rrelNum.exec( value )) ) {
+				value = ( ret[1] + 1 ) * ret[2] + parseFloat( jQuery.css( elem, name ) );
+				// Fixes bug #9237
+				type = "number";
+			}
+
+			// Make sure that NaN and null values aren't set. See: #7116
+			if ( value == null || type === "number" && isNaN( value ) ) {
+				return;
+			}
+
+			// If a number was passed in, add 'px' to the (except for certain CSS properties)
+			if ( type === "number" && !jQuery.cssNumber[ origName ] ) {
+				value += "px";
+			}
+
+			// Fixes #8908, it can be done more correctly by specifying setters in cssHooks,
+			// but it would mean to define eight (for every problematic property) identical functions
+			if ( !jQuery.support.clearCloneStyle && value === "" && name.indexOf("background") === 0 ) {
+				style[ name ] = "inherit";
+			}
+
+			// If a hook was provided, use that value, otherwise just set the specified value
+			if ( !hooks || !("set" in hooks) || (value = hooks.set( elem, value, extra )) !== undefined ) {
+				style[ name ] = value;
+			}
+
+		} else {
+			// If a hook was provided get the non-computed value from there
+			if ( hooks && "get" in hooks && (ret = hooks.get( elem, false, extra )) !== undefined ) {
+				return ret;
+			}
+
+			// Otherwise just get the value from the style object
+			return style[ name ];
+		}
+	},
+
+	css: function( elem, name, extra, styles ) {
+		var val, num, hooks,
+			origName = jQuery.camelCase( name );
+
+		// Make sure that we're working with the right name
+		name = jQuery.cssProps[ origName ] || ( jQuery.cssProps[ origName ] = vendorPropName( elem.style, origName ) );
+
+		// gets hook for the prefixed version
+		// followed by the unprefixed version
+		hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];
+
+		// If a hook was provided get the computed value from there
+		if ( hooks && "get" in hooks ) {
+			val = hooks.get( elem, true, extra );
+		}
+
+		// Otherwise, if a way to get the computed value exists, use that
+		if ( val === undefined ) {
+			val = curCSS( elem, name, styles );
+		}
+
+		//convert "normal" to computed value
+		if ( val === "normal" && name in cssNormalTransform ) {
+			val = cssNormalTransform[ name ];
+		}
+
+		// Return, converting to number if forced or a qualifier was provided and val looks numeric
+		if ( extra === "" || extra ) {
+			num = parseFloat( val );
+			return extra === true || jQuery.isNumeric( num ) ? num || 0 : val;
+		}
+		return val;
+	}
+});
+
+curCSS = function( elem, name, _computed ) {
+	var width, minWidth, maxWidth,
+		computed = _computed || getStyles( elem ),
+
+		// Support: IE9
+		// getPropertyValue is only needed for .css('filter') in IE9, see #12537
+		ret = computed ? computed.getPropertyValue( name ) || computed[ name ] : undefined,
+		style = elem.style;
+
+	if ( computed ) {
+
+		if ( ret === "" && !jQuery.contains( elem.ownerDocument, elem ) ) {
+			ret = jQuery.style( elem, name );
+		}
+
+		// Support: Safari 5.1
+		// A tribute to the "awesome hack by Dean Edwards"
+		// Safari 5.1.7 (at least) returns percentage for a larger set of values, but width seems to be reliably pixels
+		// this is against the CSSOM draft spec: http://dev.w3.org/csswg/cssom/#resolved-values
+		if ( rnumnonpx.test( ret ) && rmargin.test( name ) ) {
+
+			// Remember the original values
+			width = style.width;
+			minWidth = style.minWidth;
+			maxWidth = style.maxWidth;
+
+			// Put in the new values to get a computed value out
+			style.minWidth = style.maxWidth = style.width = ret;
+			ret = computed.width;
+
+			// Revert the changed values
+			style.width = width;
+			style.minWidth = minWidth;
+			style.maxWidth = maxWidth;
+		}
+	}
+
+	return ret;
+};
+
+
+function setPositiveNumber( elem, value, subtract ) {
+	var matches = rnumsplit.exec( value );
+	return matches ?
+		// Guard against undefined "subtract", e.g., when used as in cssHooks
+		Math.max( 0, matches[ 1 ] - ( subtract || 0 ) ) + ( matches[ 2 ] || "px" ) :
+		value;
+}
+
+function augmentWidthOrHeight( elem, name, extra, isBorderBox, styles ) {
+	var i = extra === ( isBorderBox ? "border" : "content" ) ?
+		// If we already have the right measurement, avoid augmentation
+		4 :
+		// Otherwise initialize for horizontal or vertical properties
+		name === "width" ? 1 : 0,
+
+		val = 0;
+
+	for ( ; i < 4; i += 2 ) {
+		// both box models exclude margin, so add it if we want it
+		if ( extra === "margin" ) {
+			val += jQuery.css( elem, extra + cssExpand[ i ], true, styles );
+		}
+
+		if ( isBorderBox ) {
+			// border-box includes padding, so remove it if we want content
+			if ( extra === "content" ) {
+				val -= jQuery.css( elem, "padding" + cssExpand[ i ], true, styles );
+			}
+
+			// at this point, extra isn't border nor margin, so remove border
+			if ( extra !== "margin" ) {
+				val -= jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles );
+			}
+		} else {
+			// at this point, extra isn't content, so add padding
+			val += jQuery.css( elem, "padding" + cssExpand[ i ], true, styles );
+
+			// at this point, extra isn't content nor padding, so add border
+			if ( extra !== "padding" ) {
+				val += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles );
+			}
+		}
+	}
+
+	return val;
+}
+
+function getWidthOrHeight( elem, name, extra ) {
+
+	// Start with offset property, which is equivalent to the border-box value
+	var valueIsBorderBox = true,
+		val = name === "width" ? elem.offsetWidth : elem.offsetHeight,
+		styles = getStyles( elem ),
+		isBorderBox = jQuery.support.boxSizing && jQuery.css( elem, "boxSizing", false, styles ) === "border-box";
+
+	// some non-html elements return undefined for offsetWidth, so check for null/undefined
+	// svg - https://bugzilla.mozilla.org/show_bug.cgi?id=649285
+	// MathML - https://bugzilla.mozilla.org/show_bug.cgi?id=491668
+	if ( val <= 0 || val == null ) {
+		// Fall back to computed then uncomputed css if necessary
+		val = curCSS( elem, name, styles );
+		if ( val < 0 || val == null ) {
+			val = elem.style[ name ];
+		}
+
+		// Computed unit is not pixels. Stop here and return.
+		if ( rnumnonpx.test(val) ) {
+			return val;
+		}
+
+		// we need the check for style in case a browser which returns unreliable values
+		// for getComputedStyle silently falls back to the reliable elem.style
+		valueIsBorderBox = isBorderBox && ( jQuery.support.boxSizingReliable || val === elem.style[ name ] );
+
+		// Normalize "", auto, and prepare for extra
+		val = parseFloat( val ) || 0;
+	}
+
+	// use the active box-sizing model to add/subtract irrelevant styles
+	return ( val +
+		augmentWidthOrHeight(
+			elem,
+			name,
+			extra || ( isBorderBox ? "border" : "content" ),
+			valueIsBorderBox,
+			styles
+		)
+	) + "px";
+}
+
+// Try to determine the default display value of an element
+function css_defaultDisplay( nodeName ) {
+	var doc = document,
+		display = elemdisplay[ nodeName ];
+
+	if ( !display ) {
+		display = actualDisplay( nodeName, doc );
+
+		// If the simple way fails, read from inside an iframe
+		if ( display === "none" || !display ) {
+			// Use the already-created iframe if possible
+			iframe = ( iframe ||
+				jQuery("<iframe frameborder='0' width='0' height='0'/>")
+				.css( "cssText", "display:block !important" )
+			).appendTo( doc.documentElement );
+
+			// Always write a new HTML skeleton so Webkit and Firefox don't choke on reuse
+			doc = ( iframe[0].contentWindow || iframe[0].contentDocument ).document;
+			doc.write("<!doctype html><html><body>");
+			doc.close();
+
+			display = actualDisplay( nodeName, doc );
+			iframe.detach();
+		}
+
+		// Store the correct default display
+		elemdisplay[ nodeName ] = display;
+	}
+
+	return display;
+}
+
+// Called ONLY from within css_defaultDisplay
+function actualDisplay( name, doc ) {
+	var elem = jQuery( doc.createElement( name ) ).appendTo( doc.body ),
+		display = jQuery.css( elem[0], "display" );
+	elem.remove();
+	return display;
+}
+
+jQuery.each([ "height", "width" ], function( i, name ) {
+	jQuery.cssHooks[ name ] = {
+		get: function( elem, computed, extra ) {
+			if ( computed ) {
+				// certain elements can have dimension info if we invisibly show them
+				// however, it must have a current display style that would benefit from this
+				return elem.offsetWidth === 0 && rdisplayswap.test( jQuery.css( elem, "display" ) ) ?
+					jQuery.swap( elem, cssShow, function() {
+						return getWidthOrHeight( elem, name, extra );
+					}) :
+					getWidthOrHeight( elem, name, extra );
+			}
+		},
+
+		set: function( elem, value, extra ) {
+			var styles = extra && getStyles( elem );
+			return setPositiveNumber( elem, value, extra ?
+				augmentWidthOrHeight(
+					elem,
+					name,
+					extra,
+					jQuery.support.boxSizing && jQuery.css( elem, "boxSizing", false, styles ) === "border-box",
+					styles
+				) : 0
+			);
+		}
+	};
+});
+
+// These hooks cannot be added until DOM ready because the support test
+// for it is not run until after DOM ready
+jQuery(function() {
+	// Support: Android 2.3
+	if ( !jQuery.support.reliableMarginRight ) {
+		jQuery.cssHooks.marginRight = {
+			get: function( elem, computed ) {
+				if ( computed ) {
+					// Support: Android 2.3
+					// WebKit Bug 13343 - getComputedStyle returns wrong value for margin-right
+					// Work around by temporarily setting element display to inline-block
+					return jQuery.swap( elem, { "display": "inline-block" },
+						curCSS, [ elem, "marginRight" ] );
+				}
+			}
+		};
+	}
+
+	// Webkit bug: https://bugs.webkit.org/show_bug.cgi?id=29084
+	// getComputedStyle returns percent when specified for top/left/bottom/right
+	// rather than make the css module depend on the offset module, we just check for it here
+	if ( !jQuery.support.pixelPosition && jQuery.fn.position ) {
+		jQuery.each( [ "top", "left" ], function( i, prop ) {
+			jQuery.cssHooks[ prop ] = {
+				get: function( elem, computed ) {
+					if ( computed ) {
+						computed = curCSS( elem, prop );
+						// if curCSS returns percentage, fallback to offset
+						return rnumnonpx.test( computed ) ?
+							jQuery( elem ).position()[ prop ] + "px" :
+							computed;
+					}
+				}
+			};
+		});
+	}
+
+});
+
+if ( jQuery.expr && jQuery.expr.filters ) {
+	jQuery.expr.filters.hidden = function( elem ) {
+		// Support: Opera <= 12.12
+		// Opera reports offsetWidths and offsetHeights less than zero on some elements
+		return elem.offsetWidth <= 0 && elem.offsetHeight <= 0;
+	};
+
+	jQuery.expr.filters.visible = function( elem ) {
+		return !jQuery.expr.filters.hidden( elem );
+	};
+}
+
+// These hooks are used by animate to expand properties
+jQuery.each({
+	margin: "",
+	padding: "",
+	border: "Width"
+}, function( prefix, suffix ) {
+	jQuery.cssHooks[ prefix + suffix ] = {
+		expand: function( value ) {
+			var i = 0,
+				expanded = {},
+
+				// assumes a single number if not a string
+				parts = typeof value === "string" ? value.split(" ") : [ value ];
+
+			for ( ; i < 4; i++ ) {
+				expanded[ prefix + cssExpand[ i ] + suffix ] =
+					parts[ i ] || parts[ i - 2 ] || parts[ 0 ];
+			}
+
+			return expanded;
+		}
+	};
+
+	if ( !rmargin.test( prefix ) ) {
+		jQuery.cssHooks[ prefix + suffix ].set = setPositiveNumber;
+	}
+});
+var r20 = /%20/g,
+	rbracket = /\[\]$/,
+	rCRLF = /\r?\n/g,
+	rsubmitterTypes = /^(?:submit|button|image|reset|file)$/i,
+	rsubmittable = /^(?:input|select|textarea|keygen)/i;
+
+jQuery.fn.extend({
+	serialize: function() {
+		return jQuery.param( this.serializeArray() );
+	},
+	serializeArray: function() {
+		return this.map(function(){
+			// Can add propHook for "elements" to filter or add form elements
+			var elements = jQuery.prop( this, "elements" );
+			return elements ? jQuery.makeArray( elements ) : this;
+		})
+		.filter(function(){
+			var type = this.type;
+			// Use .is(":disabled") so that fieldset[disabled] works
+			return this.name && !jQuery( this ).is( ":disabled" ) &&
+				rsubmittable.test( this.nodeName ) && !rsubmitterTypes.test( type ) &&
+				( this.checked || !manipulation_rcheckableType.test( type ) );
+		})
+		.map(function( i, elem ){
+			var val = jQuery( this ).val();
+
+			return val == null ?
+				null :
+				jQuery.isArray( val ) ?
+					jQuery.map( val, function( val ){
+						return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) };
+					}) :
+					{ name: elem.name, value: val.replace( rCRLF, "\r\n" ) };
+		}).get();
+	}
+});
+
+//Serialize an array of form elements or a set of
+//key/values into a query string
+jQuery.param = function( a, traditional ) {
+	var prefix,
+		s = [],
+		add = function( key, value ) {
+			// If value is a function, invoke it and return its value
+			value = jQuery.isFunction( value ) ? value() : ( value == null ? "" : value );
+			s[ s.length ] = encodeURIComponent( key ) + "=" + encodeURIComponent( value );
+		};
+
+	// Set traditional to true for jQuery <= 1.3.2 behavior.
+	if ( traditional === undefined ) {
+		traditional = jQuery.ajaxSettings && jQuery.ajaxSettings.traditional;
+	}
+
+	// If an array was passed in, assume that it is an array of form elements.
+	if ( jQuery.isArray( a ) || ( a.jquery && !jQuery.isPlainObject( a ) ) ) {
+		// Serialize the form elements
+		jQuery.each( a, function() {
+			add( this.name, this.value );
+		});
+
+	} else {
+		// If traditional, encode the "old" way (the way 1.3.2 or older
+		// did it), otherwise encode params recursively.
+		for ( prefix in a ) {
+			buildParams( prefix, a[ prefix ], traditional, add );
+		}
+	}
+
+	// Return the resulting serialization
+	return s.join( "&" ).replace( r20, "+" );
+};
+
+function buildParams( prefix, obj, traditional, add ) {
+	var name;
+
+	if ( jQuery.isArray( obj ) ) {
+		// Serialize array item.
+		jQuery.each( obj, function( i, v ) {
+			if ( traditional || rbracket.test( prefix ) ) {
+				// Treat each array item as a scalar.
+				add( prefix, v );
+
+			} else {
+				// Item is non-scalar (array or object), encode its numeric index.
+				buildParams( prefix + "[" + ( typeof v === "object" ? i : "" ) + "]", v, traditional, add );
+			}
+		});
+
+	} else if ( !traditional && jQuery.type( obj ) === "object" ) {
+		// Serialize object item.
+		for ( name in obj ) {
+			buildParams( prefix + "[" + name + "]", obj[ name ], traditional, add );
+		}
+
+	} else {
+		// Serialize scalar item.
+		add( prefix, obj );
+	}
+}
+jQuery.each( ("blur focus focusin focusout load resize scroll unload click dblclick " +
+	"mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave " +
+	"change select submit keydown keypress keyup error contextmenu").split(" "), function( i, name ) {
+
+	// Handle event binding
+	jQuery.fn[ name ] = function( data, fn ) {
+		return arguments.length > 0 ?
+			this.on( name, null, data, fn ) :
+			this.trigger( name );
+	};
+});
+
+jQuery.fn.extend({
+	hover: function( fnOver, fnOut ) {
+		return this.mouseenter( fnOver ).mouseleave( fnOut || fnOver );
+	},
+
+	bind: function( types, data, fn ) {
+		return this.on( types, null, data, fn );
+	},
+	unbind: function( types, fn ) {
+		return this.off( types, null, fn );
+	},
+
+	delegate: function( selector, types, data, fn ) {
+		return this.on( types, selector, data, fn );
+	},
+	undelegate: function( selector, types, fn ) {
+		// ( namespace ) or ( selector, types [, fn] )
+		return arguments.length === 1 ? this.off( selector, "**" ) : this.off( types, selector || "**", fn );
+	}
+});
+var
+	// Document location
+	ajaxLocParts,
+	ajaxLocation,
+
+	ajax_nonce = jQuery.now(),
+
+	ajax_rquery = /\?/,
+	rhash = /#.*$/,
+	rts = /([?&])_=[^&]*/,
+	rheaders = /^(.*?):[ \t]*([^\r\n]*)$/mg,
+	// #7653, #8125, #8152: local protocol detection
+	rlocalProtocol = /^(?:about|app|app-storage|.+-extension|file|res|widget):$/,
+	rnoContent = /^(?:GET|HEAD)$/,
+	rprotocol = /^\/\//,
+	rurl = /^([\w.+-]+:)(?:\/\/([^\/?#:]*)(?::(\d+)|)|)/,
+
+	// Keep a copy of the old load method
+	_load = jQuery.fn.load,
+
+	/* Prefilters
+	 * 1) They are useful to introduce custom dataTypes (see ajax/jsonp.js for an example)
+	 * 2) These are called:
+	 *    - BEFORE asking for a transport
+	 *    - AFTER param serialization (s.data is a string if s.processData is true)
+	 * 3) key is the dataType
+	 * 4) the catchall symbol "*" can be used
+	 * 5) execution will start with transport dataType and THEN continue down to "*" if needed
+	 */
+	prefilters = {},
+
+	/* Transports bindings
+	 * 1) key is the dataType
+	 * 2) the catchall symbol "*" can be used
+	 * 3) selection will start with transport dataType and THEN go to "*" if needed
+	 */
+	transports = {},
+
+	// Avoid comment-prolog char sequence (#10098); must appease lint and evade compression
+	allTypes = "*/".concat("*");
+
+// #8138, IE may throw an exception when accessing
+// a field from window.location if document.domain has been set
+try {
+	ajaxLocation = location.href;
+} catch( e ) {
+	// Use the href attribute of an A element
+	// since IE will modify it given document.location
+	ajaxLocation = document.createElement( "a" );
+	ajaxLocation.href = "";
+	ajaxLocation = ajaxLocation.href;
+}
+
+// Segment location into parts
+ajaxLocParts = rurl.exec( ajaxLocation.toLowerCase() ) || [];
+
+// Base "constructor" for jQuery.ajaxPrefilter and jQuery.ajaxTransport
+function addToPrefiltersOrTransports( structure ) {
+
+	// dataTypeExpression is optional and defaults to "*"
+	return function( dataTypeExpression, func ) {
+
+		if ( typeof dataTypeExpression !== "string" ) {
+			func = dataTypeExpression;
+			dataTypeExpression = "*";
+		}
+
+		var dataType,
+			i = 0,
+			dataTypes = dataTypeExpression.toLowerCase().match( core_rnotwhite ) || [];
+
+		if ( jQuery.isFunction( func ) ) {
+			// For each dataType in the dataTypeExpression
+			while ( (dataType = dataTypes[i++]) ) {
+				// Prepend if requested
+				if ( dataType[0] === "+" ) {
+					dataType = dataType.slice( 1 ) || "*";
+					(structure[ dataType ] = structure[ dataType ] || []).unshift( func );
+
+				// Otherwise append
+				} else {
+					(structure[ dataType ] = structure[ dataType ] || []).push( func );
+				}
+			}
+		}
+	};
+}
+
+// Base inspection function for prefilters and transports
+function inspectPrefiltersOrTransports( structure, options, originalOptions, jqXHR ) {
+
+	var inspected = {},
+		seekingTransport = ( structure === transports );
+
+	function inspect( dataType ) {
+		var selected;
+		inspected[ dataType ] = true;
+		jQuery.each( structure[ dataType ] || [], function( _, prefilterOrFactory ) {
+			var dataTypeOrTransport = prefilterOrFactory( options, originalOptions, jqXHR );
+			if( typeof dataTypeOrTransport === "string" && !seekingTransport && !inspected[ dataTypeOrTransport ] ) {
+				options.dataTypes.unshift( dataTypeOrTransport );
+				inspect( dataTypeOrTransport );
+				return false;
+			} else if ( seekingTransport ) {
+				return !( selected = dataTypeOrTransport );
+			}
+		});
+		return selected;
+	}
+
+	return inspect( options.dataTypes[ 0 ] ) || !inspected[ "*" ] && inspect( "*" );
+}
+
+// A special extend for ajax options
+// that takes "flat" options (not to be deep extended)
+// Fixes #9887
+function ajaxExtend( target, src ) {
+	var key, deep,
+		flatOptions = jQuery.ajaxSettings.flatOptions || {};
+
+	for ( key in src ) {
+		if ( src[ key ] !== undefined ) {
+			( flatOptions[ key ] ? target : ( deep || (deep = {}) ) )[ key ] = src[ key ];
+		}
+	}
+	if ( deep ) {
+		jQuery.extend( true, target, deep );
+	}
+
+	return target;
+}
+
+jQuery.fn.load = function( url, params, callback ) {
+	if ( typeof url !== "string" && _load ) {
+		return _load.apply( this, arguments );
+	}
+
+	var selector, type, response,
+		self = this,
+		off = url.indexOf(" ");
+
+	if ( off >= 0 ) {
+		selector = url.slice( off );
+		url = url.slice( 0, off );
+	}
+
+	// If it's a function
+	if ( jQuery.isFunction( params ) ) {
+
+		// We assume that it's the callback
+		callback = params;
+		params = undefined;
+
+	// Otherwise, build a param string
+	} else if ( params && typeof params === "object" ) {
+		type = "POST";
+	}
+
+	// If we have elements to modify, make the request
+	if ( self.length > 0 ) {
+		jQuery.ajax({
+			url: url,
+
+			// if "type" variable is undefined, then "GET" method will be used
+			type: type,
+			dataType: "html",
+			data: params
+		}).done(function( responseText ) {
+
+			// Save response for use in complete callback
+			response = arguments;
+
+			self.html( selector ?
+
+				// If a selector was specified, locate the right elements in a dummy div
+				// Exclude scripts to avoid IE 'Permission Denied' errors
+				jQuery("<div>").append( jQuery.parseHTML( responseText ) ).find( selector ) :
+
+				// Otherwise use the full result
+				responseText );
+
+		}).complete( callback && function( jqXHR, status ) {
+			self.each( callback, response || [ jqXHR.responseText, status, jqXHR ] );
+		});
+	}
+
+	return this;
+};
+
+// Attach a bunch of functions for handling common AJAX events
+jQuery.each( [ "ajaxStart", "ajaxStop", "ajaxComplete", "ajaxError", "ajaxSuccess", "ajaxSend" ], function( i, type ){
+	jQuery.fn[ type ] = function( fn ){
+		return this.on( type, fn );
+	};
+});
+
+jQuery.extend({
+
+	// Counter for holding the number of active queries
+	active: 0,
+
+	// Last-Modified header cache for next request
+	lastModified: {},
+	etag: {},
+
+	ajaxSettings: {
+		url: ajaxLocation,
+		type: "GET",
+		isLocal: rlocalProtocol.test( ajaxLocParts[ 1 ] ),
+		global: true,
+		processData: true,
+		async: true,
+		contentType: "application/x-www-form-urlencoded; charset=UTF-8",
+		/*
+		timeout: 0,
+		data: null,
+		dataType: null,
+		username: null,
+		password: null,
+		cache: null,
+		throws: false,
+		traditional: false,
+		headers: {},
+		*/
+
+		accepts: {
+			"*": allTypes,
+			text: "text/plain",
+			html: "text/html",
+			xml: "application/xml, text/xml",
+			json: "application/json, text/javascript"
+		},
+
+		contents: {
+			xml: /xml/,
+			html: /html/,
+			json: /json/
+		},
+
+		responseFields: {
+			xml: "responseXML",
+			text: "responseText",
+			json: "responseJSON"
+		},
+
+		// Data converters
+		// Keys separate source (or catchall "*") and destination types with a single space
+		converters: {
+
+			// Convert anything to text
+			"* text": String,
+
+			// Text to html (true = no transformation)
+			"text html": true,
+
+			// Evaluate text as a json expression
+			"text json": jQuery.parseJSON,
+
+			// Parse text as xml
+			"text xml": jQuery.parseXML
+		},
+
+		// For options that shouldn't be deep extended:
+		// you can add your own custom options here if
+		// and when you create one that shouldn't be
+		// deep extended (see ajaxExtend)
+		flatOptions: {
+			url: true,
+			context: true
+		}
+	},
+
+	// Creates a full fledged settings object into target
+	// with both ajaxSettings and settings fields.
+	// If target is omitted, writes into ajaxSettings.
+	ajaxSetup: function( target, settings ) {
+		return settings ?
+
+			// Building a settings object
+			ajaxExtend( ajaxExtend( target, jQuery.ajaxSettings ), settings ) :
+
+			// Extending ajaxSettings
+			ajaxExtend( jQuery.ajaxSettings, target );
+	},
+
+	ajaxPrefilter: addToPrefiltersOrTransports( prefilters ),
+	ajaxTransport: addToPrefiltersOrTransports( transports ),
+
+	// Main method
+	ajax: function( url, options ) {
+
+		// If url is an object, simulate pre-1.5 signature
+		if ( typeof url === "object" ) {
+			options = url;
+			url = undefined;
+		}
+
+		// Force options to be an object
+		options = options || {};
+
+		var transport,
+			// URL without anti-cache param
+			cacheURL,
+			// Response headers
+			responseHeadersString,
+			responseHeaders,
+			// timeout handle
+			timeoutTimer,
+			// Cross-domain detection vars
+			parts,
+			// To know if global events are to be dispatched
+			fireGlobals,
+			// Loop variable
+			i,
+			// Create the final options object
+			s = jQuery.ajaxSetup( {}, options ),
+			// Callbacks context
+			callbackContext = s.context || s,
+			// Context for global events is callbackContext if it is a DOM node or jQuery collection
+			globalEventContext = s.context && ( callbackContext.nodeType || callbackContext.jquery ) ?
+				jQuery( callbackContext ) :
+				jQuery.event,
+			// Deferreds
+			deferred = jQuery.Deferred(),
+			completeDeferred = jQuery.Callbacks("once memory"),
+			// Status-dependent callbacks
+			statusCode = s.statusCode || {},
+			// Headers (they are sent all at once)
+			requestHeaders = {},
+			requestHeadersNames = {},
+			// The jqXHR state
+			state = 0,
+			// Default abort message
+			strAbort = "canceled",
+			// Fake xhr
+			jqXHR = {
+				readyState: 0,
+
+				// Builds headers hashtable if needed
+				getResponseHeader: function( key ) {
+					var match;
+					if ( state === 2 ) {
+						if ( !responseHeaders ) {
+							responseHeaders = {};
+							while ( (match = rheaders.exec( responseHeadersString )) ) {
+								responseHeaders[ match[1].toLowerCase() ] = match[ 2 ];
+							}
+						}
+						match = responseHeaders[ key.toLowerCase() ];
+					}
+					return match == null ? null : match;
+				},
+
+				// Raw string
+				getAllResponseHeaders: function() {
+					return state === 2 ? responseHeadersString : null;
+				},
+
+				// Caches the header
+				setRequestHeader: function( name, value ) {
+					var lname = name.toLowerCase();
+					if ( !state ) {
+						name = requestHeadersNames[ lname ] = requestHeadersNames[ lname ] || name;
+						requestHeaders[ name ] = value;
+					}
+					return this;
+				},
+
+				// Overrides response content-type header
+				overrideMimeType: function( type ) {
+					if ( !state ) {
+						s.mimeType = type;
+					}
+					return this;
+				},
+
+				// Status-dependent callbacks
+				statusCode: function( map ) {
+					var code;
+					if ( map ) {
+						if ( state < 2 ) {
+							for ( code in map ) {
+								// Lazy-add the new callback in a way that preserves old ones
+								statusCode[ code ] = [ statusCode[ code ], map[ code ] ];
+							}
+						} else {
+							// Execute the appropriate callbacks
+							jqXHR.always( map[ jqXHR.status ] );
+						}
+					}
+					return this;
+				},
+
+				// Cancel the request
+				abort: function( statusText ) {
+					var finalText = statusText || strAbort;
+					if ( transport ) {
+						transport.abort( finalText );
+					}
+					done( 0, finalText );
+					return this;
+				}
+			};
+
+		// Attach deferreds
+		deferred.promise( jqXHR ).complete = completeDeferred.add;
+		jqXHR.success = jqXHR.done;
+		jqXHR.error = jqXHR.fail;
+
+		// Remove hash character (#7531: and string promotion)
+		// Add protocol if not provided (prefilters might expect it)
+		// Handle falsy url in the settings object (#10093: consistency with old signature)
+		// We also use the url parameter if available
+		s.url = ( ( url || s.url || ajaxLocation ) + "" ).replace( rhash, "" )
+			.replace( rprotocol, ajaxLocParts[ 1 ] + "//" );
+
+		// Alias method option to type as per ticket #12004
+		s.type = options.method || options.type || s.method || s.type;
+
+		// Extract dataTypes list
+		s.dataTypes = jQuery.trim( s.dataType || "*" ).toLowerCase().match( core_rnotwhite ) || [""];
+
+		// A cross-domain request is in order when we have a protocol:host:port mismatch
+		if ( s.crossDomain == null ) {
+			parts = rurl.exec( s.url.toLowerCase() );
+			s.crossDomain = !!( parts &&
+				( parts[ 1 ] !== ajaxLocParts[ 1 ] || parts[ 2 ] !== ajaxLocParts[ 2 ] ||
+					( parts[ 3 ] || ( parts[ 1 ] === "http:" ? "80" : "443" ) ) !==
+						( ajaxLocParts[ 3 ] || ( ajaxLocParts[ 1 ] === "http:" ? "80" : "443" ) ) )
+			);
+		}
+
+		// Convert data if not already a string
+		if ( s.data && s.processData && typeof s.data !== "string" ) {
+			s.data = jQuery.param( s.data, s.traditional );
+		}
+
+		// Apply prefilters
+		inspectPrefiltersOrTransports( prefilters, s, options, jqXHR );
+
+		// If request was aborted inside a prefilter, stop there
+		if ( state === 2 ) {
+			return jqXHR;
+		}
+
+		// We can fire global events as of now if asked to
+		fireGlobals = s.global;
+
+		// Watch for a new set of requests
+		if ( fireGlobals && jQuery.active++ === 0 ) {
+			jQuery.event.trigger("ajaxStart");
+		}
+
+		// Uppercase the type
+		s.type = s.type.toUpperCase();
+
+		// Determine if request has content
+		s.hasContent = !rnoContent.test( s.type );
+
+		// Save the URL in case we're toying with the If-Modified-Since
+		// and/or If-None-Match header later on
+		cacheURL = s.url;
+
+		// More options handling for requests with no content
+		if ( !s.hasContent ) {
+
+			// If data is available, append data to url
+			if ( s.data ) {
+				cacheURL = ( s.url += ( ajax_rquery.test( cacheURL ) ? "&" : "?" ) + s.data );
+				// #9682: remove data so that it's not used in an eventual retry
+				delete s.data;
+			}
+
+			// Add anti-cache in url if needed
+			if ( s.cache === false ) {
+				s.url = rts.test( cacheURL ) ?
+
+					// If there is already a '_' parameter, set its value
+					cacheURL.replace( rts, "$1_=" + ajax_nonce++ ) :
+
+					// Otherwise add one to the end
+					cacheURL + ( ajax_rquery.test( cacheURL ) ? "&" : "?" ) + "_=" + ajax_nonce++;
+			}
+		}
+
+		// Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.
+		if ( s.ifModified ) {
+			if ( jQuery.lastModified[ cacheURL ] ) {
+				jqXHR.setRequestHeader( "If-Modified-Since", jQuery.lastModified[ cacheURL ] );
+			}
+			if ( jQuery.etag[ cacheURL ] ) {
+				jqXHR.setRequestHeader( "If-None-Match", jQuery.etag[ cacheURL ] );
+			}
+		}
+
+		// Set the correct header, if data is being sent
+		if ( s.data && s.hasContent && s.contentType !== false || options.contentType ) {
+			jqXHR.setRequestHeader( "Content-Type", s.contentType );
+		}
+
+		// Set the Accepts header for the server, depending on the dataType
+		jqXHR.setRequestHeader(
+			"Accept",
+			s.dataTypes[ 0 ] && s.accepts[ s.dataTypes[0] ] ?
+				s.accepts[ s.dataTypes[0] ] + ( s.dataTypes[ 0 ] !== "*" ? ", " + allTypes + "; q=0.01" : "" ) :
+				s.accepts[ "*" ]
+		);
+
+		// Check for headers option
+		for ( i in s.headers ) {
+			jqXHR.setRequestHeader( i, s.headers[ i ] );
+		}
+
+		// Allow custom headers/mimetypes and early abort
+		if ( s.beforeSend && ( s.beforeSend.call( callbackContext, jqXHR, s ) === false || state === 2 ) ) {
+			// Abort if not done already and return
+			return jqXHR.abort();
+		}
+
+		// aborting is no longer a cancellation
+		strAbort = "abort";
+
+		// Install callbacks on deferreds
+		for ( i in { success: 1, error: 1, complete: 1 } ) {
+			jqXHR[ i ]( s[ i ] );
+		}
+
+		// Get transport
+		transport = inspectPrefiltersOrTransports( transports, s, options, jqXHR );
+
+		// If no transport, we auto-abort
+		if ( !transport ) {
+			done( -1, "No Transport" );
+		} else {
+			jqXHR.readyState = 1;
+
+			// Send global event
+			if ( fireGlobals ) {
+				globalEventContext.trigger( "ajaxSend", [ jqXHR, s ] );
+			}
+			// Timeout
+			if ( s.async && s.timeout > 0 ) {
+				timeoutTimer = setTimeout(function() {
+					jqXHR.abort("timeout");
+				}, s.timeout );
+			}
+
+			try {
+				state = 1;
+				transport.send( requestHeaders, done );
+			} catch ( e ) {
+				// Propagate exception as error if not done
+				if ( state < 2 ) {
+					done( -1, e );
+				// Simply rethrow otherwise
+				} else {
+					throw e;
+				}
+			}
+		}
+
+		// Callback for when everything is done
+		function done( status, nativeStatusText, responses, headers ) {
+			var isSuccess, success, error, response, modified,
+				statusText = nativeStatusText;
+
+			// Called once
+			if ( state === 2 ) {
+				return;
+			}
+
+			// State is "done" now
+			state = 2;
+
+			// Clear timeout if it exists
+			if ( timeoutTimer ) {
+				clearTimeout( timeoutTimer );
+			}
+
+			// Dereference transport for early garbage collection
+			// (no matter how long the jqXHR object will be used)
+			transport = undefined;
+
+			// Cache response headers
+			responseHeadersString = headers || "";
+
+			// Set readyState
+			jqXHR.readyState = status > 0 ? 4 : 0;
+
+			// Determine if successful
+			isSuccess = status >= 200 && status < 300 || status === 304;
+
+			// Get response data
+			if ( responses ) {
+				response = ajaxHandleResponses( s, jqXHR, responses );
+			}
+
+			// Convert no matter what (that way responseXXX fields are always set)
+			response = ajaxConvert( s, response, jqXHR, isSuccess );
+
+			// If successful, handle type chaining
+			if ( isSuccess ) {
+
+				// Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.
+				if ( s.ifModified ) {
+					modified = jqXHR.getResponseHeader("Last-Modified");
+					if ( modified ) {
+						jQuery.lastModified[ cacheURL ] = modified;
+					}
+					modified = jqXHR.getResponseHeader("etag");
+					if ( modified ) {
+						jQuery.etag[ cacheURL ] = modified;
+					}
+				}
+
+				// if no content
+				if ( status === 204 || s.type === "HEAD" ) {
+					statusText = "nocontent";
+
+				// if not modified
+				} else if ( status === 304 ) {
+					statusText = "notmodified";
+
+				// If we have data, let's convert it
+				} else {
+					statusText = response.state;
+					success = response.data;
+					error = response.error;
+					isSuccess = !error;
+				}
+			} else {
+				// We extract error from statusText
+				// then normalize statusText and status for non-aborts
+				error = statusText;
+				if ( status || !statusText ) {
+					statusText = "error";
+					if ( status < 0 ) {
+						status = 0;
+					}
+				}
+			}
+
+			// Set data for the fake xhr object
+			jqXHR.status = status;
+			jqXHR.statusText = ( nativeStatusText || statusText ) + "";
+
+			// Success/Error
+			if ( isSuccess ) {
+				deferred.resolveWith( callbackContext, [ success, statusText, jqXHR ] );
+			} else {
+				deferred.rejectWith( callbackContext, [ jqXHR, statusText, error ] );
+			}
+
+			// Status-dependent callbacks
+			jqXHR.statusCode( statusCode );
+			statusCode = undefined;
+
+			if ( fireGlobals ) {
+				globalEventContext.trigger( isSuccess ? "ajaxSuccess" : "ajaxError",
+					[ jqXHR, s, isSuccess ? success : error ] );
+			}
+
+			// Complete
+			completeDeferred.fireWith( callbackContext, [ jqXHR, statusText ] );
+
+			if ( fireGlobals ) {
+				globalEventContext.trigger( "ajaxComplete", [ jqXHR, s ] );
+				// Handle the global AJAX counter
+				if ( !( --jQuery.active ) ) {
+					jQuery.event.trigger("ajaxStop");
+				}
+			}
+		}
+
+		return jqXHR;
+	},
+
+	getJSON: function( url, data, callback ) {
+		return jQuery.get( url, data, callback, "json" );
+	},
+
+	getScript: function( url, callback ) {
+		return jQuery.get( url, undefined, callback, "script" );
+	}
+});
+
+jQuery.each( [ "get", "post" ], function( i, method ) {
+	jQuery[ method ] = function( url, data, callback, type ) {
+		// shift arguments if data argument was omitted
+		if ( jQuery.isFunction( data ) ) {
+			type = type || callback;
+			callback = data;
+			data = undefined;
+		}
+
+		return jQuery.ajax({
+			url: url,
+			type: method,
+			dataType: type,
+			data: data,
+			success: callback
+		});
+	};
+});
+
+/* Handles responses to an ajax request:
+ * - finds the right dataType (mediates between content-type and expected dataType)
+ * - returns the corresponding response
+ */
+function ajaxHandleResponses( s, jqXHR, responses ) {
+
+	var ct, type, finalDataType, firstDataType,
+		contents = s.contents,
+		dataTypes = s.dataTypes;
+
+	// Remove auto dataType and get content-type in the process
+	while( dataTypes[ 0 ] === "*" ) {
+		dataTypes.shift();
+		if ( ct === undefined ) {
+			ct = s.mimeType || jqXHR.getResponseHeader("Content-Type");
+		}
+	}
+
+	// Check if we're dealing with a known content-type
+	if ( ct ) {
+		for ( type in contents ) {
+			if ( contents[ type ] && contents[ type ].test( ct ) ) {
+				dataTypes.unshift( type );
+				break;
+			}
+		}
+	}
+
+	// Check to see if we have a response for the expected dataType
+	if ( dataTypes[ 0 ] in responses ) {
+		finalDataType = dataTypes[ 0 ];
+	} else {
+		// Try convertible dataTypes
+		for ( type in responses ) {
+			if ( !dataTypes[ 0 ] || s.converters[ type + " " + dataTypes[0] ] ) {
+				finalDataType = type;
+				break;
+			}
+			if ( !firstDataType ) {
+				firstDataType = type;
+			}
+		}
+		// Or just use first one
+		finalDataType = finalDataType || firstDataType;
+	}
+
+	// If we found a dataType
+	// We add the dataType to the list if needed
+	// and return the corresponding response
+	if ( finalDataType ) {
+		if ( finalDataType !== dataTypes[ 0 ] ) {
+			dataTypes.unshift( finalDataType );
+		}
+		return responses[ finalDataType ];
+	}
+}
+
+/* Chain conversions given the request and the original response
+ * Also sets the responseXXX fields on the jqXHR instance
+ */
+function ajaxConvert( s, response, jqXHR, isSuccess ) {
+	var conv2, current, conv, tmp, prev,
+		converters = {},
+		// Work with a copy of dataTypes in case we need to modify it for conversion
+		dataTypes = s.dataTypes.slice();
+
+	// Create converters map with lowercased keys
+	if ( dataTypes[ 1 ] ) {
+		for ( conv in s.converters ) {
+			converters[ conv.toLowerCase() ] = s.converters[ conv ];
+		}
+	}
+
+	current = dataTypes.shift();
+
+	// Convert to each sequential dataType
+	while ( current ) {
+
+		if ( s.responseFields[ current ] ) {
+			jqXHR[ s.responseFields[ current ] ] = response;
+		}
+
+		// Apply the dataFilter if provided
+		if ( !prev && isSuccess && s.dataFilter ) {
+			response = s.dataFilter( response, s.dataType );
+		}
+
+		prev = current;
+		current = dataTypes.shift();
+
+		if ( current ) {
+
+		// There's only work to do if current dataType is non-auto
+			if ( current === "*" ) {
+
+				current = prev;
+
+			// Convert response if prev dataType is non-auto and differs from current
+			} else if ( prev !== "*" && prev !== current ) {
+
+				// Seek a direct converter
+				conv = converters[ prev + " " + current ] || converters[ "* " + current ];
+
+				// If none found, seek a pair
+				if ( !conv ) {
+					for ( conv2 in converters ) {
+
+						// If conv2 outputs current
+						tmp = conv2.split( " " );
+						if ( tmp[ 1 ] === current ) {
+
+							// If prev can be converted to accepted input
+							conv = converters[ prev + " " + tmp[ 0 ] ] ||
+								converters[ "* " + tmp[ 0 ] ];
+							if ( conv ) {
+								// Condense equivalence converters
+								if ( conv === true ) {
+									conv = converters[ conv2 ];
+
+								// Otherwise, insert the intermediate dataType
+								} else if ( converters[ conv2 ] !== true ) {
+									current = tmp[ 0 ];
+									dataTypes.unshift( tmp[ 1 ] );
+								}
+								break;
+							}
+						}
+					}
+				}
+
+				// Apply converter (if not an equivalence)
+				if ( conv !== true ) {
+
+					// Unless errors are allowed to bubble, catch and return them
+					if ( conv && s[ "throws" ] ) {
+						response = conv( response );
+					} else {
+						try {
+							response = conv( response );
+						} catch ( e ) {
+							return { state: "parsererror", error: conv ? e : "No conversion from " + prev + " to " + current };
+						}
+					}
+				}
+			}
+		}
+	}
+
+	return { state: "success", data: response };
+}
+// Install script dataType
+jQuery.ajaxSetup({
+	accepts: {
+		script: "text/javascript, application/javascript, application/ecmascript, application/x-ecmascript"
+	},
+	contents: {
+		script: /(?:java|ecma)script/
+	},
+	converters: {
+		"text script": function( text ) {
+			jQuery.globalEval( text );
+			return text;
+		}
+	}
+});
+
+// Handle cache's special case and crossDomain
+jQuery.ajaxPrefilter( "script", function( s ) {
+	if ( s.cache === undefined ) {
+		s.cache = false;
+	}
+	if ( s.crossDomain ) {
+		s.type = "GET";
+	}
+});
+
+// Bind script tag hack transport
+jQuery.ajaxTransport( "script", function( s ) {
+	// This transport only deals with cross domain requests
+	if ( s.crossDomain ) {
+		var script, callback;
+		return {
+			send: function( _, complete ) {
+				script = jQuery("<script>").prop({
+					async: true,
+					charset: s.scriptCharset,
+					src: s.url
+				}).on(
+					"load error",
+					callback = function( evt ) {
+						script.remove();
+						callback = null;
+						if ( evt ) {
+							complete( evt.type === "error" ? 404 : 200, evt.type );
+						}
+					}
+				);
+				document.head.appendChild( script[ 0 ] );
+			},
+			abort: function() {
+				if ( callback ) {
+					callback();
+				}
+			}
+		};
+	}
+});
+var oldCallbacks = [],
+	rjsonp = /(=)\?(?=&|$)|\?\?/;
+
+// Default jsonp settings
+jQuery.ajaxSetup({
+	jsonp: "callback",
+	jsonpCallback: function() {
+		var callback = oldCallbacks.pop() || ( jQuery.expando + "_" + ( ajax_nonce++ ) );
+		this[ callback ] = true;
+		return callback;
+	}
+});
+
+// Detect, normalize options and install callbacks for jsonp requests
+jQuery.ajaxPrefilter( "json jsonp", function( s, originalSettings, jqXHR ) {
+
+	var callbackName, overwritten, responseContainer,
+		jsonProp = s.jsonp !== false && ( rjsonp.test( s.url ) ?
+			"url" :
+			typeof s.data === "string" && !( s.contentType || "" ).indexOf("application/x-www-form-urlencoded") && rjsonp.test( s.data ) && "data"
+		);
+
+	// Handle iff the expected data type is "jsonp" or we have a parameter to set
+	if ( jsonProp || s.dataTypes[ 0 ] === "jsonp" ) {
+
+		// Get callback name, remembering preexisting value associated with it
+		callbackName = s.jsonpCallback = jQuery.isFunction( s.jsonpCallback ) ?
+			s.jsonpCallback() :
+			s.jsonpCallback;
+
+		// Insert callback into url or form data
+		if ( jsonProp ) {
+			s[ jsonProp ] = s[ jsonProp ].replace( rjsonp, "$1" + callbackName );
+		} else if ( s.jsonp !== false ) {
+			s.url += ( ajax_rquery.test( s.url ) ? "&" : "?" ) + s.jsonp + "=" + callbackName;
+		}
+
+		// Use data converter to retrieve json after script execution
+		s.converters["script json"] = function() {
+			if ( !responseContainer ) {
+				jQuery.error( callbackName + " was not called" );
+			}
+			return responseContainer[ 0 ];
+		};
+
+		// force json dataType
+		s.dataTypes[ 0 ] = "json";
+
+		// Install callback
+		overwritten = window[ callbackName ];
+		window[ callbackName ] = function() {
+			responseContainer = arguments;
+		};
+
+		// Clean-up function (fires after converters)
+		jqXHR.always(function() {
+			// Restore preexisting value
+			window[ callbackName ] = overwritten;
+
+			// Save back as free
+			if ( s[ callbackName ] ) {
+				// make sure that re-using the options doesn't screw things around
+				s.jsonpCallback = originalSettings.jsonpCallback;
+
+				// save the callback name for future use
+				oldCallbacks.push( callbackName );
+			}
+
+			// Call if it was a function and we have a response
+			if ( responseContainer && jQuery.isFunction( overwritten ) ) {
+				overwritten( responseContainer[ 0 ] );
+			}
+
+			responseContainer = overwritten = undefined;
+		});
+
+		// Delegate to script
+		return "script";
+	}
+});
+jQuery.ajaxSettings.xhr = function() {
+	try {
+		return new XMLHttpRequest();
+	} catch( e ) {}
+};
+
+var xhrSupported = jQuery.ajaxSettings.xhr(),
+	xhrSuccessStatus = {
+		// file protocol always yields status code 0, assume 200
+		0: 200,
+		// Support: IE9
+		// #1450: sometimes IE returns 1223 when it should be 204
+		1223: 204
+	},
+	// Support: IE9
+	// We need to keep track of outbound xhr and abort them manually
+	// because IE is not smart enough to do it all by itself
+	xhrId = 0,
+	xhrCallbacks = {};
+
+if ( window.ActiveXObject ) {
+	jQuery( window ).on( "unload", function() {
+		for( var key in xhrCallbacks ) {
+			xhrCallbacks[ key ]();
+		}
+		xhrCallbacks = undefined;
+	});
+}
+
+jQuery.support.cors = !!xhrSupported && ( "withCredentials" in xhrSupported );
+jQuery.support.ajax = xhrSupported = !!xhrSupported;
+
+jQuery.ajaxTransport(function( options ) {
+	var callback;
+	// Cross domain only allowed if supported through XMLHttpRequest
+	if ( jQuery.support.cors || xhrSupported && !options.crossDomain ) {
+		return {
+			send: function( headers, complete ) {
+				var i, id,
+					xhr = options.xhr();
+				xhr.open( options.type, options.url, options.async, options.username, options.password );
+				// Apply custom fields if provided
+				if ( options.xhrFields ) {
+					for ( i in options.xhrFields ) {
+						xhr[ i ] = options.xhrFields[ i ];
+					}
+				}
+				// Override mime type if needed
+				if ( options.mimeType && xhr.overrideMimeType ) {
+					xhr.overrideMimeType( options.mimeType );
+				}
+				// X-Requested-With header
+				// For cross-domain requests, seeing as conditions for a preflight are
+				// akin to a jigsaw puzzle, we simply never set it to be sure.
+				// (it can always be set on a per-request basis or even using ajaxSetup)
+				// For same-domain requests, won't change header if already provided.
+				if ( !options.crossDomain && !headers["X-Requested-With"] ) {
+					headers["X-Requested-With"] = "XMLHttpRequest";
+				}
+				// Set headers
+				for ( i in headers ) {
+					xhr.setRequestHeader( i, headers[ i ] );
+				}
+				// Callback
+				callback = function( type ) {
+					return function() {
+						if ( callback ) {
+							delete xhrCallbacks[ id ];
+							callback = xhr.onload = xhr.onerror = null;
+							if ( type === "abort" ) {
+								xhr.abort();
+							} else if ( type === "error" ) {
+								complete(
+									// file protocol always yields status 0, assume 404
+									xhr.status || 404,
+									xhr.statusText
+								);
+							} else {
+								complete(
+									xhrSuccessStatus[ xhr.status ] || xhr.status,
+									xhr.statusText,
+									// Support: IE9
+									// #11426: When requesting binary data, IE9 will throw an exception
+									// on any attempt to access responseText
+									typeof xhr.responseText === "string" ? {
+										text: xhr.responseText
+									} : undefined,
+									xhr.getAllResponseHeaders()
+								);
+							}
+						}
+					};
+				};
+				// Listen to events
+				xhr.onload = callback();
+				xhr.onerror = callback("error");
+				// Create the abort callback
+				callback = xhrCallbacks[( id = xhrId++ )] = callback("abort");
+				// Do send the request
+				// This may raise an exception which is actually
+				// handled in jQuery.ajax (so no try/catch here)
+				xhr.send( options.hasContent && options.data || null );
+			},
+			abort: function() {
+				if ( callback ) {
+					callback();
+				}
+			}
+		};
+	}
+});
+var fxNow, timerId,
+	rfxtypes = /^(?:toggle|show|hide)$/,
+	rfxnum = new RegExp( "^(?:([+-])=|)(" + core_pnum + ")([a-z%]*)$", "i" ),
+	rrun = /queueHooks$/,
+	animationPrefilters = [ defaultPrefilter ],
+	tweeners = {
+		"*": [function( prop, value ) {
+			var tween = this.createTween( prop, value ),
+				target = tween.cur(),
+				parts = rfxnum.exec( value ),
+				unit = parts && parts[ 3 ] || ( jQuery.cssNumber[ prop ] ? "" : "px" ),
+
+				// Starting value computation is required for potential unit mismatches
+				start = ( jQuery.cssNumber[ prop ] || unit !== "px" && +target ) &&
+					rfxnum.exec( jQuery.css( tween.elem, prop ) ),
+				scale = 1,
+				maxIterations = 20;
+
+			if ( start && start[ 3 ] !== unit ) {
+				// Trust units reported by jQuery.css
+				unit = unit || start[ 3 ];
+
+				// Make sure we update the tween properties later on
+				parts = parts || [];
+
+				// Iteratively approximate from a nonzero starting point
+				start = +target || 1;
+
+				do {
+					// If previous iteration zeroed out, double until we get *something*
+					// Use a string for doubling factor so we don't accidentally see scale as unchanged below
+					scale = scale || ".5";
+
+					// Adjust and apply
+					start = start / scale;
+					jQuery.style( tween.elem, prop, start + unit );
+
+				// Update scale, tolerating zero or NaN from tween.cur()
+				// And breaking the loop if scale is unchanged or perfect, or if we've just had enough
+				} while ( scale !== (scale = tween.cur() / target) && scale !== 1 && --maxIterations );
+			}
+
+			// Update tween properties
+			if ( parts ) {
+				start = tween.start = +start || +target || 0;
+				tween.unit = unit;
+				// If a +=/-= token was provided, we're doing a relative animation
+				tween.end = parts[ 1 ] ?
+					start + ( parts[ 1 ] + 1 ) * parts[ 2 ] :
+					+parts[ 2 ];
+			}
+
+			return tween;
+		}]
+	};
+
+// Animations created synchronously will run synchronously
+function createFxNow() {
+	setTimeout(function() {
+		fxNow = undefined;
+	});
+	return ( fxNow = jQuery.now() );
+}
+
+function createTween( value, prop, animation ) {
+	var tween,
+		collection = ( tweeners[ prop ] || [] ).concat( tweeners[ "*" ] ),
+		index = 0,
+		length = collection.length;
+	for ( ; index < length; index++ ) {
+		if ( (tween = collection[ index ].call( animation, prop, value )) ) {
+
+			// we're done with this property
+			return tween;
+		}
+	}
+}
+
+function Animation( elem, properties, options ) {
+	var result,
+		stopped,
+		index = 0,
+		length = animationPrefilters.length,
+		deferred = jQuery.Deferred().always( function() {
+			// don't match elem in the :animated selector
+			delete tick.elem;
+		}),
+		tick = function() {
+			if ( stopped ) {
+				return false;
+			}
+			var currentTime = fxNow || createFxNow(),
+				remaining = Math.max( 0, animation.startTime + animation.duration - currentTime ),
+				// archaic crash bug won't allow us to use 1 - ( 0.5 || 0 ) (#12497)
+				temp = remaining / animation.duration || 0,
+				percent = 1 - temp,
+				index = 0,
+				length = animation.tweens.length;
+
+			for ( ; index < length ; index++ ) {
+				animation.tweens[ index ].run( percent );
+			}
+
+			deferred.notifyWith( elem, [ animation, percent, remaining ]);
+
+			if ( percent < 1 && length ) {
+				return remaining;
+			} else {
+				deferred.resolveWith( elem, [ animation ] );
+				return false;
+			}
+		},
+		animation = deferred.promise({
+			elem: elem,
+			props: jQuery.extend( {}, properties ),
+			opts: jQuery.extend( true, { specialEasing: {} }, options ),
+			originalProperties: properties,
+			originalOptions: options,
+			startTime: fxNow || createFxNow(),
+			duration: options.duration,
+			tweens: [],
+			createTween: function( prop, end ) {
+				var tween = jQuery.Tween( elem, animation.opts, prop, end,
+						animation.opts.specialEasing[ prop ] || animation.opts.easing );
+				animation.tweens.push( tween );
+				return tween;
+			},
+			stop: function( gotoEnd ) {
+				var index = 0,
+					// if we are going to the end, we want to run all the tweens
+					// otherwise we skip this part
+					length = gotoEnd ? animation.tweens.length : 0;
+				if ( stopped ) {
+					return this;
+				}
+				stopped = true;
+				for ( ; index < length ; index++ ) {
+					animation.tweens[ index ].run( 1 );
+				}
+
+				// resolve when we played the last frame
+				// otherwise, reject
+				if ( gotoEnd ) {
+					deferred.resolveWith( elem, [ animation, gotoEnd ] );
+				} else {
+					deferred.rejectWith( elem, [ animation, gotoEnd ] );
+				}
+				return this;
+			}
+		}),
+		props = animation.props;
+
+	propFilter( props, animation.opts.specialEasing );
+
+	for ( ; index < length ; index++ ) {
+		result = animationPrefilters[ index ].call( animation, elem, props, animation.opts );
+		if ( result ) {
+			return result;
+		}
+	}
+
+	jQuery.map( props, createTween, animation );
+
+	if ( jQuery.isFunction( animation.opts.start ) ) {
+		animation.opts.start.call( elem, animation );
+	}
+
+	jQuery.fx.timer(
+		jQuery.extend( tick, {
+			elem: elem,
+			anim: animation,
+			queue: animation.opts.queue
+		})
+	);
+
+	// attach callbacks from options
+	return animation.progress( animation.opts.progress )
+		.done( animation.opts.done, animation.opts.complete )
+		.fail( animation.opts.fail )
+		.always( animation.opts.always );
+}
+
+function propFilter( props, specialEasing ) {
+	var index, name, easing, value, hooks;
+
+	// camelCase, specialEasing and expand cssHook pass
+	for ( index in props ) {
+		name = jQuery.camelCase( index );
+		easing = specialEasing[ name ];
+		value = props[ index ];
+		if ( jQuery.isArray( value ) ) {
+			easing = value[ 1 ];
+			value = props[ index ] = value[ 0 ];
+		}
+
+		if ( index !== name ) {
+			props[ name ] = value;
+			delete props[ index ];
+		}
+
+		hooks = jQuery.cssHooks[ name ];
+		if ( hooks && "expand" in hooks ) {
+			value = hooks.expand( value );
+			delete props[ name ];
+
+			// not quite $.extend, this wont overwrite keys already present.
+			// also - reusing 'index' from above because we have the correct "name"
+			for ( index in value ) {
+				if ( !( index in props ) ) {
+					props[ index ] = value[ index ];
+					specialEasing[ index ] = easing;
+				}
+			}
+		} else {
+			specialEasing[ name ] = easing;
+		}
+	}
+}
+
+jQuery.Animation = jQuery.extend( Animation, {
+
+	tweener: function( props, callback ) {
+		if ( jQuery.isFunction( props ) ) {
+			callback = props;
+			props = [ "*" ];
+		} else {
+			props = props.split(" ");
+		}
+
+		var prop,
+			index = 0,
+			length = props.length;
+
+		for ( ; index < length ; index++ ) {
+			prop = props[ index ];
+			tweeners[ prop ] = tweeners[ prop ] || [];
+			tweeners[ prop ].unshift( callback );
+		}
+	},
+
+	prefilter: function( callback, prepend ) {
+		if ( prepend ) {
+			animationPrefilters.unshift( callback );
+		} else {
+			animationPrefilters.push( callback );
+		}
+	}
+});
+
+function defaultPrefilter( elem, props, opts ) {
+	/* jshint validthis: true */
+	var prop, value, toggle, tween, hooks, oldfire,
+		anim = this,
+		orig = {},
+		style = elem.style,
+		hidden = elem.nodeType && isHidden( elem ),
+		dataShow = data_priv.get( elem, "fxshow" );
+
+	// handle queue: false promises
+	if ( !opts.queue ) {
+		hooks = jQuery._queueHooks( elem, "fx" );
+		if ( hooks.unqueued == null ) {
+			hooks.unqueued = 0;
+			oldfire = hooks.empty.fire;
+			hooks.empty.fire = function() {
+				if ( !hooks.unqueued ) {
+					oldfire();
+				}
+			};
+		}
+		hooks.unqueued++;
+
+		anim.always(function() {
+			// doing this makes sure that the complete handler will be called
+			// before this completes
+			anim.always(function() {
+				hooks.unqueued--;
+				if ( !jQuery.queue( elem, "fx" ).length ) {
+					hooks.empty.fire();
+				}
+			});
+		});
+	}
+
+	// height/width overflow pass
+	if ( elem.nodeType === 1 && ( "height" in props || "width" in props ) ) {
+		// Make sure that nothing sneaks out
+		// Record all 3 overflow attributes because IE9-10 do not
+		// change the overflow attribute when overflowX and
+		// overflowY are set to the same value
+		opts.overflow = [ style.overflow, style.overflowX, style.overflowY ];
+
+		// Set display property to inline-block for height/width
+		// animations on inline elements that are having width/height animated
+		if ( jQuery.css( elem, "display" ) === "inline" &&
+				jQuery.css( elem, "float" ) === "none" ) {
+
+			style.display = "inline-block";
+		}
+	}
+
+	if ( opts.overflow ) {
+		style.overflow = "hidden";
+		anim.always(function() {
+			style.overflow = opts.overflow[ 0 ];
+			style.overflowX = opts.overflow[ 1 ];
+			style.overflowY = opts.overflow[ 2 ];
+		});
+	}
+
+
+	// show/hide pass
+	for ( prop in props ) {
+		value = props[ prop ];
+		if ( rfxtypes.exec( value ) ) {
+			delete props[ prop ];
+			toggle = toggle || value === "toggle";
+			if ( value === ( hidden ? "hide" : "show" ) ) {
+
+				// If there is dataShow left over from a stopped hide or show and we are going to proceed with show, we should pretend to be hidden
+				if ( value === "show" && dataShow && dataShow[ prop ] !== undefined ) {
+					hidden = true;
+				} else {
+					continue;
+				}
+			}
+			orig[ prop ] = dataShow && dataShow[ prop ] || jQuery.style( elem, prop );
+		}
+	}
+
+	if ( !jQuery.isEmptyObject( orig ) ) {
+		if ( dataShow ) {
+			if ( "hidden" in dataShow ) {
+				hidden = dataShow.hidden;
+			}
+		} else {
+			dataShow = data_priv.access( elem, "fxshow", {} );
+		}
+
+		// store state if its toggle - enables .stop().toggle() to "reverse"
+		if ( toggle ) {
+			dataShow.hidden = !hidden;
+		}
+		if ( hidden ) {
+			jQuery( elem ).show();
+		} else {
+			anim.done(function() {
+				jQuery( elem ).hide();
+			});
+		}
+		anim.done(function() {
+			var prop;
+
+			data_priv.remove( elem, "fxshow" );
+			for ( prop in orig ) {
+				jQuery.style( elem, prop, orig[ prop ] );
+			}
+		});
+		for ( prop in orig ) {
+			tween = createTween( hidden ? dataShow[ prop ] : 0, prop, anim );
+
+			if ( !( prop in dataShow ) ) {
+				dataShow[ prop ] = tween.start;
+				if ( hidden ) {
+					tween.end = tween.start;
+					tween.start = prop === "width" || prop === "height" ? 1 : 0;
+				}
+			}
+		}
+	}
+}
+
+function Tween( elem, options, prop, end, easing ) {
+	return new Tween.prototype.init( elem, options, prop, end, easing );
+}
+jQuery.Tween = Tween;
+
+Tween.prototype = {
+	constructor: Tween,
+	init: function( elem, options, prop, end, easing, unit ) {
+		this.elem = elem;
+		this.prop = prop;
+		this.easing = easing || "swing";
+		this.options = options;
+		this.start = this.now = this.cur();
+		this.end = end;
+		this.unit = unit || ( jQuery.cssNumber[ prop ] ? "" : "px" );
+	},
+	cur: function() {
+		var hooks = Tween.propHooks[ this.prop ];
+
+		return hooks && hooks.get ?
+			hooks.get( this ) :
+			Tween.propHooks._default.get( this );
+	},
+	run: function( percent ) {
+		var eased,
+			hooks = Tween.propHooks[ this.prop ];
+
+		if ( this.options.duration ) {
+			this.pos = eased = jQuery.easing[ this.easing ](
+				percent, this.options.duration * percent, 0, 1, this.options.duration
+			);
+		} else {
+			this.pos = eased = percent;
+		}
+		this.now = ( this.end - this.start ) * eased + this.start;
+
+		if ( this.options.step ) {
+			this.options.step.call( this.elem, this.now, this );
+		}
+
+		if ( hooks && hooks.set ) {
+			hooks.set( this );
+		} else {
+			Tween.propHooks._default.set( this );
+		}
+		return this;
+	}
+};
+
+Tween.prototype.init.prototype = Tween.prototype;
+
+Tween.propHooks = {
+	_default: {
+		get: function( tween ) {
+			var result;
+
+			if ( tween.elem[ tween.prop ] != null &&
+				(!tween.elem.style || tween.elem.style[ tween.prop ] == null) ) {
+				return tween.elem[ tween.prop ];
+			}
+
+			// passing an empty string as a 3rd parameter to .css will automatically
+			// attempt a parseFloat and fallback to a string if the parse fails
+			// so, simple values such as "10px" are parsed to Float.
+			// complex values such as "rotate(1rad)" are returned as is.
+			result = jQuery.css( tween.elem, tween.prop, "" );
+			// Empty strings, null, undefined and "auto" are converted to 0.
+			return !result || result === "auto" ? 0 : result;
+		},
+		set: function( tween ) {
+			// use step hook for back compat - use cssHook if its there - use .style if its
+			// available and use plain properties where available
+			if ( jQuery.fx.step[ tween.prop ] ) {
+				jQuery.fx.step[ tween.prop ]( tween );
+			} else if ( tween.elem.style && ( tween.elem.style[ jQuery.cssProps[ tween.prop ] ] != null || jQuery.cssHooks[ tween.prop ] ) ) {
+				jQuery.style( tween.elem, tween.prop, tween.now + tween.unit );
+			} else {
+				tween.elem[ tween.prop ] = tween.now;
+			}
+		}
+	}
+};
+
+// Support: IE9
+// Panic based approach to setting things on disconnected nodes
+
+Tween.propHooks.scrollTop = Tween.propHooks.scrollLeft = {
+	set: function( tween ) {
+		if ( tween.elem.nodeType && tween.elem.parentNode ) {
+			tween.elem[ tween.prop ] = tween.now;
+		}
+	}
+};
+
+jQuery.each([ "toggle", "show", "hide" ], function( i, name ) {
+	var cssFn = jQuery.fn[ name ];
+	jQuery.fn[ name ] = function( speed, easing, callback ) {
+		return speed == null || typeof speed === "boolean" ?
+			cssFn.apply( this, arguments ) :
+			this.animate( genFx( name, true ), speed, easing, callback );
+	};
+});
+
+jQuery.fn.extend({
+	fadeTo: function( speed, to, easing, callback ) {
+
+		// show any hidden elements after setting opacity to 0
+		return this.filter( isHidden ).css( "opacity", 0 ).show()
+
+			// animate to the value specified
+			.end().animate({ opacity: to }, speed, easing, callback );
+	},
+	animate: function( prop, speed, easing, callback ) {
+		var empty = jQuery.isEmptyObject( prop ),
+			optall = jQuery.speed( speed, easing, callback ),
+			doAnimation = function() {
+				// Operate on a copy of prop so per-property easing won't be lost
+				var anim = Animation( this, jQuery.extend( {}, prop ), optall );
+
+				// Empty animations, or finishing resolves immediately
+				if ( empty || data_priv.get( this, "finish" ) ) {
+					anim.stop( true );
+				}
+			};
+			doAnimation.finish = doAnimation;
+
+		return empty || optall.queue === false ?
+			this.each( doAnimation ) :
+			this.queue( optall.queue, doAnimation );
+	},
+	stop: function( type, clearQueue, gotoEnd ) {
+		var stopQueue = function( hooks ) {
+			var stop = hooks.stop;
+			delete hooks.stop;
+			stop( gotoEnd );
+		};
+
+		if ( typeof type !== "string" ) {
+			gotoEnd = clearQueue;
+			clearQueue = type;
+			type = undefined;
+		}
+		if ( clearQueue && type !== false ) {
+			this.queue( type || "fx", [] );
+		}
+
+		return this.each(function() {
+			var dequeue = true,
+				index = type != null && type + "queueHooks",
+				timers = jQuery.timers,
+				data = data_priv.get( this );
+
+			if ( index ) {
+				if ( data[ index ] && data[ index ].stop ) {
+					stopQueue( data[ index ] );
+				}
+			} else {
+				for ( index in data ) {
+					if ( data[ index ] && data[ index ].stop && rrun.test( index ) ) {
+						stopQueue( data[ index ] );
+					}
+				}
+			}
+
+			for ( index = timers.length; index--; ) {
+				if ( timers[ index ].elem === this && (type == null || timers[ index ].queue === type) ) {
+					timers[ index ].anim.stop( gotoEnd );
+					dequeue = false;
+					timers.splice( index, 1 );
+				}
+			}
+
+			// start the next in the queue if the last step wasn't forced
+			// timers currently will call their complete callbacks, which will dequeue
+			// but only if they were gotoEnd
+			if ( dequeue || !gotoEnd ) {
+				jQuery.dequeue( this, type );
+			}
+		});
+	},
+	finish: function( type ) {
+		if ( type !== false ) {
+			type = type || "fx";
+		}
+		return this.each(function() {
+			var index,
+				data = data_priv.get( this ),
+				queue = data[ type + "queue" ],
+				hooks = data[ type + "queueHooks" ],
+				timers = jQuery.timers,
+				length = queue ? queue.length : 0;
+
+			// enable finishing flag on private data
+			data.finish = true;
+
+			// empty the queue first
+			jQuery.queue( this, type, [] );
+
+			if ( hooks && hooks.stop ) {
+				hooks.stop.call( this, true );
+			}
+
+			// look for any active animations, and finish them
+			for ( index = timers.length; index--; ) {
+				if ( timers[ index ].elem === this && timers[ index ].queue === type ) {
+					timers[ index ].anim.stop( true );
+					timers.splice( index, 1 );
+				}
+			}
+
+			// look for any animations in the old queue and finish them
+			for ( index = 0; index < length; index++ ) {
+				if ( queue[ index ] && queue[ index ].finish ) {
+					queue[ index ].finish.call( this );
+				}
+			}
+
+			// turn off finishing flag
+			delete data.finish;
+		});
+	}
+});
+
+// Generate parameters to create a standard animation
+function genFx( type, includeWidth ) {
+	var which,
+		attrs = { height: type },
+		i = 0;
+
+	// if we include width, step value is 1 to do all cssExpand values,
+	// if we don't include width, step value is 2 to skip over Left and Right
+	includeWidth = includeWidth? 1 : 0;
+	for( ; i < 4 ; i += 2 - includeWidth ) {
+		which = cssExpand[ i ];
+		attrs[ "margin" + which ] = attrs[ "padding" + which ] = type;
+	}
+
+	if ( includeWidth ) {
+		attrs.opacity = attrs.width = type;
+	}
+
+	return attrs;
+}
+
+// Generate shortcuts for custom animations
+jQuery.each({
+	slideDown: genFx("show"),
+	slideUp: genFx("hide"),
+	slideToggle: genFx("toggle"),
+	fadeIn: { opacity: "show" },
+	fadeOut: { opacity: "hide" },
+	fadeToggle: { opacity: "toggle" }
+}, function( name, props ) {
+	jQuery.fn[ name ] = function( speed, easing, callback ) {
+		return this.animate( props, speed, easing, callback );
+	};
+});
+
+jQuery.speed = function( speed, easing, fn ) {
+	var opt = speed && typeof speed === "object" ? jQuery.extend( {}, speed ) : {
+		complete: fn || !fn && easing ||
+			jQuery.isFunction( speed ) && speed,
+		duration: speed,
+		easing: fn && easing || easing && !jQuery.isFunction( easing ) && easing
+	};
+
+	opt.duration = jQuery.fx.off ? 0 : typeof opt.duration === "number" ? opt.duration :
+		opt.duration in jQuery.fx.speeds ? jQuery.fx.speeds[ opt.duration ] : jQuery.fx.speeds._default;
+
+	// normalize opt.queue - true/undefined/null -> "fx"
+	if ( opt.queue == null || opt.queue === true ) {
+		opt.queue = "fx";
+	}
+
+	// Queueing
+	opt.old = opt.complete;
+
+	opt.complete = function() {
+		if ( jQuery.isFunction( opt.old ) ) {
+			opt.old.call( this );
+		}
+
+		if ( opt.queue ) {
+			jQuery.dequeue( this, opt.queue );
+		}
+	};
+
+	return opt;
+};
+
+jQuery.easing = {
+	linear: function( p ) {
+		return p;
+	},
+	swing: function( p ) {
+		return 0.5 - Math.cos( p*Math.PI ) / 2;
+	}
+};
+
+jQuery.timers = [];
+jQuery.fx = Tween.prototype.init;
+jQuery.fx.tick = function() {
+	var timer,
+		timers = jQuery.timers,
+		i = 0;
+
+	fxNow = jQuery.now();
+
+	for ( ; i < timers.length; i++ ) {
+		timer = timers[ i ];
+		// Checks the timer has not already been removed
+		if ( !timer() && timers[ i ] === timer ) {
+			timers.splice( i--, 1 );
+		}
+	}
+
+	if ( !timers.length ) {
+		jQuery.fx.stop();
+	}
+	fxNow = undefined;
+};
+
+jQuery.fx.timer = function( timer ) {
+	if ( timer() && jQuery.timers.push( timer ) ) {
+		jQuery.fx.start();
+	}
+};
+
+jQuery.fx.interval = 13;
+
+jQuery.fx.start = function() {
+	if ( !timerId ) {
+		timerId = setInterval( jQuery.fx.tick, jQuery.fx.interval );
+	}
+};
+
+jQuery.fx.stop = function() {
+	clearInterval( timerId );
+	timerId = null;
+};
+
+jQuery.fx.speeds = {
+	slow: 600,
+	fast: 200,
+	// Default speed
+	_default: 400
+};
+
+// Back Compat <1.8 extension point
+jQuery.fx.step = {};
+
+if ( jQuery.expr && jQuery.expr.filters ) {
+	jQuery.expr.filters.animated = function( elem ) {
+		return jQuery.grep(jQuery.timers, function( fn ) {
+			return elem === fn.elem;
+		}).length;
+	};
+}
+jQuery.fn.offset = function( options ) {
+	if ( arguments.length ) {
+		return options === undefined ?
+			this :
+			this.each(function( i ) {
+				jQuery.offset.setOffset( this, options, i );
+			});
+	}
+
+	var docElem, win,
+		elem = this[ 0 ],
+		box = { top: 0, left: 0 },
+		doc = elem && elem.ownerDocument;
+
+	if ( !doc ) {
+		return;
+	}
+
+	docElem = doc.documentElement;
+
+	// Make sure it's not a disconnected DOM node
+	if ( !jQuery.contains( docElem, elem ) ) {
+		return box;
+	}
+
+	// If we don't have gBCR, just use 0,0 rather than error
+	// BlackBerry 5, iOS 3 (original iPhone)
+	if ( typeof elem.getBoundingClientRect !== core_strundefined ) {
+		box = elem.getBoundingClientRect();
+	}
+	win = getWindow( doc );
+	return {
+		top: box.top + win.pageYOffset - docElem.clientTop,
+		left: box.left + win.pageXOffset - docElem.clientLeft
+	};
+};
+
+jQuery.offset = {
+
+	setOffset: function( elem, options, i ) {
+		var curPosition, curLeft, curCSSTop, curTop, curOffset, curCSSLeft, calculatePosition,
+			position = jQuery.css( elem, "position" ),
+			curElem = jQuery( elem ),
+			props = {};
+
+		// Set position first, in-case top/left are set even on static elem
+		if ( position === "static" ) {
+			elem.style.position = "relative";
+		}
+
+		curOffset = curElem.offset();
+		curCSSTop = jQuery.css( elem, "top" );
+		curCSSLeft = jQuery.css( elem, "left" );
+		calculatePosition = ( position === "absolute" || position === "fixed" ) && ( curCSSTop + curCSSLeft ).indexOf("auto") > -1;
+
+		// Need to be able to calculate position if either top or left is auto and position is either absolute or fixed
+		if ( calculatePosition ) {
+			curPosition = curElem.position();
+			curTop = curPosition.top;
+			curLeft = curPosition.left;
+
+		} else {
+			curTop = parseFloat( curCSSTop ) || 0;
+			curLeft = parseFloat( curCSSLeft ) || 0;
+		}
+
+		if ( jQuery.isFunction( options ) ) {
+			options = options.call( elem, i, curOffset );
+		}
+
+		if ( options.top != null ) {
+			props.top = ( options.top - curOffset.top ) + curTop;
+		}
+		if ( options.left != null ) {
+			props.left = ( options.left - curOffset.left ) + curLeft;
+		}
+
+		if ( "using" in options ) {
+			options.using.call( elem, props );
+
+		} else {
+			curElem.css( props );
+		}
+	}
+};
+
+
+jQuery.fn.extend({
+
+	position: function() {
+		if ( !this[ 0 ] ) {
+			return;
+		}
+
+		var offsetParent, offset,
+			elem = this[ 0 ],
+			parentOffset = { top: 0, left: 0 };
+
+		// Fixed elements are offset from window (parentOffset = {top:0, left: 0}, because it is it's only offset parent
+		if ( jQuery.css( elem, "position" ) === "fixed" ) {
+			// We assume that getBoundingClientRect is available when computed position is fixed
+			offset = elem.getBoundingClientRect();
+
+		} else {
+			// Get *real* offsetParent
+			offsetParent = this.offsetParent();
+
+			// Get correct offsets
+			offset = this.offset();
+			if ( !jQuery.nodeName( offsetParent[ 0 ], "html" ) ) {
+				parentOffset = offsetParent.offset();
+			}
+
+			// Add offsetParent borders
+			parentOffset.top += jQuery.css( offsetParent[ 0 ], "borderTopWidth", true );
+			parentOffset.left += jQuery.css( offsetParent[ 0 ], "borderLeftWidth", true );
+		}
+
+		// Subtract parent offsets and element margins
+		return {
+			top: offset.top - parentOffset.top - jQuery.css( elem, "marginTop", true ),
+			left: offset.left - parentOffset.left - jQuery.css( elem, "marginLeft", true )
+		};
+	},
+
+	offsetParent: function() {
+		return this.map(function() {
+			var offsetParent = this.offsetParent || docElem;
+
+			while ( offsetParent && ( !jQuery.nodeName( offsetParent, "html" ) && jQuery.css( offsetParent, "position") === "static" ) ) {
+				offsetParent = offsetParent.offsetParent;
+			}
+
+			return offsetParent || docElem;
+		});
+	}
+});
+
+
+// Create scrollLeft and scrollTop methods
+jQuery.each( {scrollLeft: "pageXOffset", scrollTop: "pageYOffset"}, function( method, prop ) {
+	var top = "pageYOffset" === prop;
+
+	jQuery.fn[ method ] = function( val ) {
+		return jQuery.access( this, function( elem, method, val ) {
+			var win = getWindow( elem );
+
+			if ( val === undefined ) {
+				return win ? win[ prop ] : elem[ method ];
+			}
+
+			if ( win ) {
+				win.scrollTo(
+					!top ? val : window.pageXOffset,
+					top ? val : window.pageYOffset
+				);
+
+			} else {
+				elem[ method ] = val;
+			}
+		}, method, val, arguments.length, null );
+	};
+});
+
+function getWindow( elem ) {
+	return jQuery.isWindow( elem ) ? elem : elem.nodeType === 9 && elem.defaultView;
+}
+// Create innerHeight, innerWidth, height, width, outerHeight and outerWidth methods
+jQuery.each( { Height: "height", Width: "width" }, function( name, type ) {
+	jQuery.each( { padding: "inner" + name, content: type, "": "outer" + name }, function( defaultExtra, funcName ) {
+		// margin is only for outerHeight, outerWidth
+		jQuery.fn[ funcName ] = function( margin, value ) {
+			var chainable = arguments.length && ( defaultExtra || typeof margin !== "boolean" ),
+				extra = defaultExtra || ( margin === true || value === true ? "margin" : "border" );
+
+			return jQuery.access( this, function( elem, type, value ) {
+				var doc;
+
+				if ( jQuery.isWindow( elem ) ) {
+					// As of 5/8/2012 this will yield incorrect results for Mobile Safari, but there
+					// isn't a whole lot we can do. See pull request at this URL for discussion:
+					// https://github.com/jquery/jquery/pull/764
+					return elem.document.documentElement[ "client" + name ];
+				}
+
+				// Get document width or height
+				if ( elem.nodeType === 9 ) {
+					doc = elem.documentElement;
+
+					// Either scroll[Width/Height] or offset[Width/Height] or client[Width/Height],
+					// whichever is greatest
+					return Math.max(
+						elem.body[ "scroll" + name ], doc[ "scroll" + name ],
+						elem.body[ "offset" + name ], doc[ "offset" + name ],
+						doc[ "client" + name ]
+					);
+				}
+
+				return value === undefined ?
+					// Get width or height on the element, requesting but not forcing parseFloat
+					jQuery.css( elem, type, extra ) :
+
+					// Set width or height on the element
+					jQuery.style( elem, type, value, extra );
+			}, type, chainable ? margin : undefined, chainable, null );
+		};
+	});
+});
+// Limit scope pollution from any deprecated API
+// (function() {
+
+// The number of elements contained in the matched element set
+jQuery.fn.size = function() {
+	return this.length;
+};
+
+jQuery.fn.andSelf = jQuery.fn.addBack;
+
+// })();
+if ( typeof module === "object" && module && typeof module.exports === "object" ) {
+	// Expose jQuery as module.exports in loaders that implement the Node
+	// module pattern (including browserify). Do not create the global, since
+	// the user will be storing it themselves locally, and globals are frowned
+	// upon in the Node module world.
+	module.exports = jQuery;
+} else {
+	// Register as a named AMD module, since jQuery can be concatenated with other
+	// files that may use define, but not via a proper concatenation script that
+	// understands anonymous AMD modules. A named AMD is safest and most robust
+	// way to register. Lowercase jquery is used because AMD module names are
+	// derived from file names, and jQuery is normally delivered in a lowercase
+	// file name. Do this after creating the global so that if an AMD module wants
+	// to call noConflict to hide this version of jQuery, it will work.
+	if ( typeof define === "function" && define.amd ) {
+		define( "jquery", [], function () { return jQuery; } );
+	}
+}
+
+// If there is a window object, that at least has a document property,
+// define jQuery and $ identifiers
+if ( typeof window === "object" && typeof window.document === "object" ) {
+	window.jQuery = window.$ = jQuery;
+}
+
+})( window );
+
+/**
+ * @license
+ * Lo-Dash 2.2.1 (Custom Build) <http://lodash.com/>
+ * Build: `lodash modern -o ./dist/lodash.js`
+ * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
+ * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
+ * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
+ * Available under MIT license <http://lodash.com/license>
+ */
+;(function() {
+
+  /** Used as a safe reference for `undefined` in pre ES5 environments */
+  var undefined;
+
+  /** Used to pool arrays and objects used internally */
+  var arrayPool = [],
+      objectPool = [];
+
+  /** Used to generate unique IDs */
+  var idCounter = 0;
+
+  /** Used to prefix keys to avoid issues with `__proto__` and properties on `Object.prototype` */
+  var keyPrefix = +new Date + '';
+
+  /** Used as the size when optimizations are enabled for large arrays */
+  var largeArraySize = 75;
+
+  /** Used as the max size of the `arrayPool` and `objectPool` */
+  var maxPoolSize = 40;
+
+  /** Used to detect and test whitespace */
+  var whitespace = (
+    // whitespace
+    ' \t\x0B\f\xA0\ufeff' +
+
+    // line terminators
+    '\n\r\u2028\u2029' +
+
+    // unicode category "Zs" space separators
+    '\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000'
+  );
+
+  /** Used to match empty string literals in compiled template source */
+  var reEmptyStringLeading = /\b__p \+= '';/g,
+      reEmptyStringMiddle = /\b(__p \+=) '' \+/g,
+      reEmptyStringTrailing = /(__e\(.*?\)|\b__t\)) \+\n'';/g;
+
+  /**
+   * Used to match ES6 template delimiters
+   * http://people.mozilla.org/~jorendorff/es6-draft.html#sec-7.8.6
+   */
+  var reEsTemplate = /\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g;
+
+  /** Used to match regexp flags from their coerced string values */
+  var reFlags = /\w*$/;
+
+  /** Used to detected named functions */
+  var reFuncName = /^function[ \n\r\t]+\w/;
+
+  /** Used to match "interpolate" template delimiters */
+  var reInterpolate = /<%=([\s\S]+?)%>/g;
+
+  /** Used to match leading whitespace and zeros to be removed */
+  var reLeadingSpacesAndZeros = RegExp('^[' + whitespace + ']*0+(?=.$)');
+
+  /** Used to ensure capturing order of template delimiters */
+  var reNoMatch = /($^)/;
+
+  /** Used to detect functions containing a `this` reference */
+  var reThis = /\bthis\b/;
+
+  /** Used to match unescaped characters in compiled string literals */
+  var reUnescapedString = /['\n\r\t\u2028\u2029\\]/g;
+
+  /** Used to assign default `context` object properties */
+  var contextProps = [
+    'Array', 'Boolean', 'Date', 'Function', 'Math', 'Number', 'Object',
+    'RegExp', 'String', '_', 'attachEvent', 'clearTimeout', 'isFinite', 'isNaN',
+    'parseInt', 'setImmediate', 'setTimeout'
+  ];
+
+  /** Used to make template sourceURLs easier to identify */
+  var templateCounter = 0;
+
+  /** `Object#toString` result shortcuts */
+  var argsClass = '[object Arguments]',
+      arrayClass = '[object Array]',
+      boolClass = '[object Boolean]',
+      dateClass = '[object Date]',
+      funcClass = '[object Function]',
+      numberClass = '[object Number]',
+      objectClass = '[object Object]',
+      regexpClass = '[object RegExp]',
+      stringClass = '[object String]';
+
+  /** Used to identify object classifications that `_.clone` supports */
+  var cloneableClasses = {};
+  cloneableClasses[funcClass] = false;
+  cloneableClasses[argsClass] = cloneableClasses[arrayClass] =
+  cloneableClasses[boolClass] = cloneableClasses[dateClass] =
+  cloneableClasses[numberClass] = cloneableClasses[objectClass] =
+  cloneableClasses[regexpClass] = cloneableClasses[stringClass] = true;
+
+  /** Used as an internal `_.debounce` options object */
+  var debounceOptions = {
+    'leading': false,
+    'maxWait': 0,
+    'trailing': false
+  };
+
+  /** Used as the property descriptor for `__bindData__` */
+  var descriptor = {
+    'configurable': false,
+    'enumerable': false,
+    'value': null,
+    'writable': false
+  };
+
+  /** Used to determine if values are of the language type Object */
+  var objectTypes = {
+    'boolean': false,
+    'function': true,
+    'object': true,
+    'number': false,
+    'string': false,
+    'undefined': false
+  };
+
+  /** Used to escape characters for inclusion in compiled string literals */
+  var stringEscapes = {
+    '\\': '\\',
+    "'": "'",
+    '\n': 'n',
+    '\r': 'r',
+    '\t': 't',
+    '\u2028': 'u2028',
+    '\u2029': 'u2029'
+  };
+
+  /** Used as a reference to the global object */
+  var root = (objectTypes[typeof window] && window) || this;
+
+  /** Detect free variable `exports` */
+  var freeExports = objectTypes[typeof exports] && exports && !exports.nodeType && exports;
+
+  /** Detect free variable `module` */
+  var freeModule = objectTypes[typeof module] && module && !module.nodeType && module;
+
+  /** Detect the popular CommonJS extension `module.exports` */
+  var moduleExports = freeModule && freeModule.exports === freeExports && freeExports;
+
+  /** Detect free variable `global` from Node.js or Browserified code and use it as `root` */
+  var freeGlobal = objectTypes[typeof global] && global;
+  if (freeGlobal && (freeGlobal.global === freeGlobal || freeGlobal.window === freeGlobal)) {
+    root = freeGlobal;
+  }
+
+  /*--------------------------------------------------------------------------*/
+
+  /**
+   * The base implementation of `_.indexOf` without support for binary searches
+   * or `fromIndex` constraints.
+   *
+   * @private
+   * @param {Array} array The array to search.
+   * @param {*} value The value to search for.
+   * @param {number} [fromIndex=0] The index to search from.
+   * @returns {number} Returns the index of the matched value or `-1`.
+   */
+  function baseIndexOf(array, value, fromIndex) {
+    var index = (fromIndex || 0) - 1,
+        length = array ? array.length : 0;
+
+    while (++index < length) {
+      if (array[index] === value) {
+        return index;
+      }
+    }
+    return -1;
+  }
+
+  /**
+   * An implementation of `_.contains` for cache objects that mimics the return
+   * signature of `_.indexOf` by returning `0` if the value is found, else `-1`.
+   *
+   * @private
+   * @param {Object} cache The cache object to inspect.
+   * @param {*} value The value to search for.
+   * @returns {number} Returns `0` if `value` is found, else `-1`.
+   */
+  function cacheIndexOf(cache, value) {
+    var type = typeof value;
+    cache = cache.cache;
+
+    if (type == 'boolean' || value == null) {
+      return cache[value] ? 0 : -1;
+    }
+    if (type != 'number' && type != 'string') {
+      type = 'object';
+    }
+    var key = type == 'number' ? value : keyPrefix + value;
+    cache = (cache = cache[type]) && cache[key];
+
+    return type == 'object'
+      ? (cache && baseIndexOf(cache, value) > -1 ? 0 : -1)
+      : (cache ? 0 : -1);
+  }
+
+  /**
+   * Adds a given value to the corresponding cache object.
+   *
+   * @private
+   * @param {*} value The value to add to the cache.
+   */
+  function cachePush(value) {
+    var cache = this.cache,
+        type = typeof value;
+
+    if (type == 'boolean' || value == null) {
+      cache[value] = true;
+    } else {
+      if (type != 'number' && type != 'string') {
+        type = 'object';
+      }
+      var key = type == 'number' ? value : keyPrefix + value,
+          typeCache = cache[type] || (cache[type] = {});
+
+      if (type == 'object') {
+        (typeCache[key] || (typeCache[key] = [])).push(value);
+      } else {
+        typeCache[key] = true;
+      }
+    }
+  }
+
+  /**
+   * Used by `_.max` and `_.min` as the default callback when a given
+   * collection is a string value.
+   *
+   * @private
+   * @param {string} value The character to inspect.
+   * @returns {number} Returns the code unit of given character.
+   */
+  function charAtCallback(value) {
+    return value.charCodeAt(0);
+  }
+
+  /**
+   * Used by `sortBy` to compare transformed `collection` elements, stable sorting
+   * them in ascending order.
+   *
+   * @private
+   * @param {Object} a The object to compare to `b`.
+   * @param {Object} b The object to compare to `a`.
+   * @returns {number} Returns the sort order indicator of `1` or `-1`.
+   */
+  function compareAscending(a, b) {
+    var ac = a.criteria,
+        bc = b.criteria;
+
+    // ensure a stable sort in V8 and other engines
+    // http://code.google.com/p/v8/issues/detail?id=90
+    if (ac !== bc) {
+      if (ac > bc || typeof ac == 'undefined') {
+        return 1;
+      }
+      if (ac < bc || typeof bc == 'undefined') {
+        return -1;
+      }
+    }
+    // The JS engine embedded in Adobe applications like InDesign has a buggy
+    // `Array#sort` implementation that causes it, under certain circumstances,
+    // to return the same value for `a` and `b`.
+    // See https://github.com/jashkenas/underscore/pull/1247
+    return a.index - b.index;
+  }
+
+  /**
+   * Creates a cache object to optimize linear searches of large arrays.
+   *
+   * @private
+   * @param {Array} [array=[]] The array to search.
+   * @returns {null|Object} Returns the cache object or `null` if caching should not be used.
+   */
+  function createCache(array) {
+    var index = -1,
+        length = array.length,
+        first = array[0],
+        mid = array[(length / 2) | 0],
+        last = array[length - 1];
+
+    if (first && typeof first == 'object' &&
+        mid && typeof mid == 'object' && last && typeof last == 'object') {
+      return false;
+    }
+    var cache = getObject();
+    cache['false'] = cache['null'] = cache['true'] = cache['undefined'] = false;
+
+    var result = getObject();
+    result.array = array;
+    result.cache = cache;
+    result.push = cachePush;
+
+    while (++index < length) {
+      result.push(array[index]);
+    }
+    return result;
+  }
+
+  /**
+   * Used by `template` to escape characters for inclusion in compiled
+   * string literals.
+   *
+   * @private
+   * @param {string} match The matched character to escape.
+   * @returns {string} Returns the escaped character.
+   */
+  function escapeStringChar(match) {
+    return '\\' + stringEscapes[match];
+  }
+
+  /**
+   * Gets an array from the array pool or creates a new one if the pool is empty.
+   *
+   * @private
+   * @returns {Array} The array from the pool.
+   */
+  function getArray() {
+    return arrayPool.pop() || [];
+  }
+
+  /**
+   * Gets an object from the object pool or creates a new one if the pool is empty.
+   *
+   * @private
+   * @returns {Object} The object from the pool.
+   */
+  function getObject() {
+    return objectPool.pop() || {
+      'array': null,
+      'cache': null,
+      'criteria': null,
+      'false': false,
+      'index': 0,
+      'null': false,
+      'number': null,
+      'object': null,
+      'push': null,
+      'string': null,
+      'true': false,
+      'undefined': false,
+      'value': null
+    };
+  }
+
+  /**
+   * A no-operation function.
+   *
+   * @private
+   */
+  function noop() {
+    // no operation performed
+  }
+
+  /**
+   * Releases the given array back to the array pool.
+   *
+   * @private
+   * @param {Array} [array] The array to release.
+   */
+  function releaseArray(array) {
+    array.length = 0;
+    if (arrayPool.length < maxPoolSize) {
+      arrayPool.push(array);
+    }
+  }
+
+  /**
+   * Releases the given object back to the object pool.
+   *
+   * @private
+   * @param {Object} [object] The object to release.
+   */
+  function releaseObject(object) {
+    var cache = object.cache;
+    if (cache) {
+      releaseObject(cache);
+    }
+    object.array = object.cache = object.criteria = object.object = object.number = object.string = object.value = null;
+    if (objectPool.length < maxPoolSize) {
+      objectPool.push(object);
+    }
+  }
+
+  /**
+   * Slices the `collection` from the `start` index up to, but not including,
+   * the `end` index.
+   *
+   * Note: This function is used instead of `Array#slice` to support node lists
+   * in IE < 9 and to ensure dense arrays are returned.
+   *
+   * @private
+   * @param {Array|Object|string} collection The collection to slice.
+   * @param {number} start The start index.
+   * @param {number} end The end index.
+   * @returns {Array} Returns the new array.
+   */
+  function slice(array, start, end) {
+    start || (start = 0);
+    if (typeof end == 'undefined') {
+      end = array ? array.length : 0;
+    }
+    var index = -1,
+        length = end - start || 0,
+        result = Array(length < 0 ? 0 : length);
+
+    while (++index < length) {
+      result[index] = array[start + index];
+    }
+    return result;
+  }
+
+  /*--------------------------------------------------------------------------*/
+
+  /**
+   * Create a new `lodash` function using the given context object.
+   *
+   * @static
+   * @memberOf _
+   * @category Utilities
+   * @param {Object} [context=root] The context object.
+   * @returns {Function} Returns the `lodash` function.
+   */
+  function runInContext(context) {
+    // Avoid issues with some ES3 environments that attempt to use values, named
+    // after built-in constructors like `Object`, for the creation of literals.
+    // ES5 clears this up by stating that literals must use built-in constructors.
+    // See http://es5.github.io/#x11.1.5.
+    context = context ? _.defaults(root.Object(), context, _.pick(root, contextProps)) : root;
+
+    /** Native constructor references */
+    var Array = context.Array,
+        Boolean = context.Boolean,
+        Date = context.Date,
+        Function = context.Function,
+        Math = context.Math,
+        Number = context.Number,
+        Object = context.Object,
+        RegExp = context.RegExp,
+        String = context.String,
+        TypeError = context.TypeError;
+
+    /**
+     * Used for `Array` method references.
+     *
+     * Normally `Array.prototype` would suffice, however, using an array literal
+     * avoids issues in Narwhal.
+     */
+    var arrayRef = [];
+
+    /** Used for native method references */
+    var objectProto = Object.prototype;
+
+    /** Used to restore the original `_` reference in `noConflict` */
+    var oldDash = context._;
+
+    /** Used to detect if a method is native */
+    var reNative = RegExp('^' +
+      String(objectProto.valueOf)
+        .replace(/[.*+?^${}()|[\]\\]/g, '\\$&')
+        .replace(/valueOf|for [^\]]+/g, '.+?') + '$'
+    );
+
+    /** Native method shortcuts */
+    var ceil = Math.ceil,
+        clearTimeout = context.clearTimeout,
+        floor = Math.floor,
+        fnToString = Function.prototype.toString,
+        getPrototypeOf = reNative.test(getPrototypeOf = Object.getPrototypeOf) && getPrototypeOf,
+        hasOwnProperty = objectProto.hasOwnProperty,
+        now = reNative.test(now = Date.now) && now || function() { return +new Date; },
+        push = arrayRef.push,
+        setImmediate = context.setImmediate,
+        setTimeout = context.setTimeout,
+        splice = arrayRef.splice,
+        toString = objectProto.toString,
+        unshift = arrayRef.unshift;
+
+    var defineProperty = (function() {
+      try {
+        var o = {},
+            func = reNative.test(func = Object.defineProperty) && func,
+            result = func(o, o, o) && func;
+      } catch(e) { }
+      return result;
+    }());
+
+    /* Native method shortcuts for methods with the same name as other `lodash` methods */
+    var nativeBind = reNative.test(nativeBind = toString.bind) && nativeBind,
+        nativeCreate = reNative.test(nativeCreate = Object.create) && nativeCreate,
+        nativeIsArray = reNative.test(nativeIsArray = Array.isArray) && nativeIsArray,
+        nativeIsFinite = context.isFinite,
+        nativeIsNaN = context.isNaN,
+        nativeKeys = reNative.test(nativeKeys = Object.keys) && nativeKeys,
+        nativeMax = Math.max,
+        nativeMin = Math.min,
+        nativeParseInt = context.parseInt,
+        nativeRandom = Math.random,
+        nativeSlice = arrayRef.slice;
+
+    /** Detect various environments */
+    var isIeOpera = reNative.test(context.attachEvent),
+        isV8 = nativeBind && !/\n|true/.test(nativeBind + isIeOpera);
+
+    /** Used to lookup a built-in constructor by [[Class]] */
+    var ctorByClass = {};
+    ctorByClass[arrayClass] = Array;
+    ctorByClass[boolClass] = Boolean;
+    ctorByClass[dateClass] = Date;
+    ctorByClass[funcClass] = Function;
+    ctorByClass[objectClass] = Object;
+    ctorByClass[numberClass] = Number;
+    ctorByClass[regexpClass] = RegExp;
+    ctorByClass[stringClass] = String;
+
+    /*--------------------------------------------------------------------------*/
+
+    /**
+     * Creates a `lodash` object which wraps the given value to enable intuitive
+     * method chaining.
+     *
+     * In addition to Lo-Dash methods, wrappers also have the following `Array` methods:
+     * `concat`, `join`, `pop`, `push`, `reverse`, `shift`, `slice`, `sort`, `splice`,
+     * and `unshift`
+     *
+     * Chaining is supported in custom builds as long as the `value` method is
+     * implicitly or explicitly included in the build.
+     *
+     * The chainable wrapper functions are:
+     * `after`, `assign`, `bind`, `bindAll`, `bindKey`, `chain`, `compact`,
+     * `compose`, `concat`, `countBy`, `createCallback`, `curry`, `debounce`,
+     * `defaults`, `defer`, `delay`, `difference`, `filter`, `flatten`, `forEach`,
+     * `forEachRight`, `forIn`, `forInRight`, `forOwn`, `forOwnRight`, `functions`,
+     * `groupBy`, `indexBy`, `initial`, `intersection`, `invert`, `invoke`, `keys`,
+     * `map`, `max`, `memoize`, `merge`, `min`, `object`, `omit`, `once`, `pairs`,
+     * `partial`, `partialRight`, `pick`, `pluck`, `pull`, `push`, `range`, `reject`,
+     * `remove`, `rest`, `reverse`, `shuffle`, `slice`, `sort`, `sortBy`, `splice`,
+     * `tap`, `throttle`, `times`, `toArray`, `transform`, `union`, `uniq`, `unshift`,
+     * `unzip`, `values`, `where`, `without`, `wrap`, and `zip`
+     *
+     * The non-chainable wrapper functions are:
+     * `clone`, `cloneDeep`, `contains`, `escape`, `every`, `find`, `findIndex`,
+     * `findKey`, `findLast`, `findLastIndex`, `findLastKey`, `has`, `identity`,
+     * `indexOf`, `isArguments`, `isArray`, `isBoolean`, `isDate`, `isElement`,
+     * `isEmpty`, `isEqual`, `isFinite`, `isFunction`, `isNaN`, `isNull`, `isNumber`,
+     * `isObject`, `isPlainObject`, `isRegExp`, `isString`, `isUndefined`, `join`,
+     * `lastIndexOf`, `mixin`, `noConflict`, `parseInt`, `pop`, `random`, `reduce`,
+     * `reduceRight`, `result`, `shift`, `size`, `some`, `sortedIndex`, `runInContext`,
+     * `template`, `unescape`, `uniqueId`, and `value`
+     *
+     * The wrapper functions `first` and `last` return wrapped values when `n` is
+     * provided, otherwise they return unwrapped values.
+     *
+     * Explicit chaining can be enabled by using the `_.chain` method.
+     *
+     * @name _
+     * @constructor
+     * @category Chaining
+     * @param {*} value The value to wrap in a `lodash` instance.
+     * @returns {Object} Returns a `lodash` instance.
+     * @example
+     *
+     * var wrapped = _([1, 2, 3]);
+     *
+     * // returns an unwrapped value
+     * wrapped.reduce(function(sum, num) {
+     *   return sum + num;
+     * });
+     * // => 6
+     *
+     * // returns a wrapped value
+     * var squares = wrapped.map(function(num) {
+     *   return num * num;
+     * });
+     *
+     * _.isArray(squares);
+     * // => false
+     *
+     * _.isArray(squares.value());
+     * // => true
+     */
+    function lodash(value) {
+      // don't wrap if already wrapped, even if wrapped by a different `lodash` constructor
+      return (value && typeof value == 'object' && !isArray(value) && hasOwnProperty.call(value, '__wrapped__'))
+       ? value
+       : new lodashWrapper(value);
+    }
+
+    /**
+     * A fast path for creating `lodash` wrapper objects.
+     *
+     * @private
+     * @param {*} value The value to wrap in a `lodash` instance.
+     * @param {boolean} chainAll A flag to enable chaining for all methods
+     * @returns {Object} Returns a `lodash` instance.
+     */
+    function lodashWrapper(value, chainAll) {
+      this.__chain__ = !!chainAll;
+      this.__wrapped__ = value;
+    }
+    // ensure `new lodashWrapper` is an instance of `lodash`
+    lodashWrapper.prototype = lodash.prototype;
+
+    /**
+     * An object used to flag environments features.
+     *
+     * @static
+     * @memberOf _
+     * @type Object
+     */
+    var support = lodash.support = {};
+
+    /**
+     * Detect if `Function#bind` exists and is inferred to be fast (all but V8).
+     *
+     * @memberOf _.support
+     * @type boolean
+     */
+    support.fastBind = nativeBind && !isV8;
+
+    /**
+     * Detect if functions can be decompiled by `Function#toString`
+     * (all but PS3 and older Opera mobile browsers & avoided in Windows 8 apps).
+     *
+     * @memberOf _.support
+     * @type boolean
+     */
+    support.funcDecomp = !reNative.test(context.WinRTError) && reThis.test(runInContext);
+
+    /**
+     * Detect if `Function#name` is supported (all but IE).
+     *
+     * @memberOf _.support
+     * @type boolean
+     */
+    support.funcNames = typeof Function.name == 'string';
+
+    /**
+     * By default, the template delimiters used by Lo-Dash are similar to those in
+     * embedded Ruby (ERB). Change the following template settings to use alternative
+     * delimiters.
+     *
+     * @static
+     * @memberOf _
+     * @type Object
+     */
+    lodash.templateSettings = {
+
+      /**
+       * Used to detect `data` property values to be HTML-escaped.
+       *
+       * @memberOf _.templateSettings
+       * @type RegExp
+       */
+      'escape': /<%-([\s\S]+?)%>/g,
+
+      /**
+       * Used to detect code to be evaluated.
+       *
+       * @memberOf _.templateSettings
+       * @type RegExp
+       */
+      'evaluate': /<%([\s\S]+?)%>/g,
+
+      /**
+       * Used to detect `data` property values to inject.
+       *
+       * @memberOf _.templateSettings
+       * @type RegExp
+       */
+      'interpolate': reInterpolate,
+
+      /**
+       * Used to reference the data object in the template text.
+       *
+       * @memberOf _.templateSettings
+       * @type string
+       */
+      'variable': '',
+
+      /**
+       * Used to import variables into the compiled template.
+       *
+       * @memberOf _.templateSettings
+       * @type Object
+       */
+      'imports': {
+
+        /**
+         * A reference to the `lodash` function.
+         *
+         * @memberOf _.templateSettings.imports
+         * @type Function
+         */
+        '_': lodash
+      }
+    };
+
+    /*--------------------------------------------------------------------------*/
+
+    /**
+     * The base implementation of `_.clone` without argument juggling or support
+     * for `thisArg` binding.
+     *
+     * @private
+     * @param {*} value The value to clone.
+     * @param {boolean} [deep=false] Specify a deep clone.
+     * @param {Function} [callback] The function to customize cloning values.
+     * @param {Array} [stackA=[]] Tracks traversed source objects.
+     * @param {Array} [stackB=[]] Associates clones with source counterparts.
+     * @returns {*} Returns the cloned value.
+     */
+    function baseClone(value, deep, callback, stackA, stackB) {
+      if (callback) {
+        var result = callback(value);
+        if (typeof result != 'undefined') {
+          return result;
+        }
+      }
+      // inspect [[Class]]
+      var isObj = isObject(value);
+      if (isObj) {
+        var className = toString.call(value);
+        if (!cloneableClasses[className]) {
+          return value;
+        }
+        var ctor = ctorByClass[className];
+        switch (className) {
+          case boolClass:
+          case dateClass:
+            return new ctor(+value);
+
+          case numberClass:
+          case stringClass:
+            return new ctor(value);
+
+          case regexpClass:
+            result = ctor(value.source, reFlags.exec(value));
+            result.lastIndex = value.lastIndex;
+            return result;
+        }
+      } else {
+        return value;
+      }
+      var isArr = isArray(value);
+      if (deep) {
+        // check for circular references and return corresponding clone
+        var initedStack = !stackA;
+        stackA || (stackA = getArray());
+        stackB || (stackB = getArray());
+
+        var length = stackA.length;
+        while (length--) {
+          if (stackA[length] == value) {
+            return stackB[length];
+          }
+        }
+        result = isArr ? ctor(value.length) : {};
+      }
+      else {
+        result = isArr ? slice(value) : assign({}, value);
+      }
+      // add array properties assigned by `RegExp#exec`
+      if (isArr) {
+        if (hasOwnProperty.call(value, 'index')) {
+          result.index = value.index;
+        }
+        if (hasOwnProperty.call(value, 'input')) {
+          result.input = value.input;
+        }
+      }
+      // exit for shallow clone
+      if (!deep) {
+        return result;
+      }
+      // add the source value to the stack of traversed objects
+      // and associate it with its clone
+      stackA.push(value);
+      stackB.push(result);
+
+      // recursively populate clone (susceptible to call stack limits)
+      (isArr ? forEach : forOwn)(value, function(objValue, key) {
+        result[key] = baseClone(objValue, deep, callback, stackA, stackB);
+      });
+
+      if (initedStack) {
+        releaseArray(stackA);
+        releaseArray(stackB);
+      }
+      return result;
+    }
+
+    /**
+     * The base implementation of `_.createCallback` without support for creating
+     * "_.pluck" or "_.where" style callbacks.
+     *
+     * @private
+     * @param {*} [func=identity] The value to convert to a callback.
+     * @param {*} [thisArg] The `this` binding of the created callback.
+     * @param {number} [argCount] The number of arguments the callback accepts.
+     * @returns {Function} Returns a callback function.
+     */
+    function baseCreateCallback(func, thisArg, argCount) {
+      if (typeof func != 'function') {
+        return identity;
+      }
+      // exit early if there is no `thisArg`
+      if (typeof thisArg == 'undefined') {
+        return func;
+      }
+      var bindData = func.__bindData__ || (support.funcNames && !func.name);
+      if (typeof bindData == 'undefined') {
+        var source = reThis && fnToString.call(func);
+        if (!support.funcNames && source && !reFuncName.test(source)) {
+          bindData = true;
+        }
+        if (support.funcNames || !bindData) {
+          // checks if `func` references the `this` keyword and stores the result
+          bindData = !support.funcDecomp || reThis.test(source);
+          setBindData(func, bindData);
+        }
+      }
+      // exit early if there are no `this` references or `func` is bound
+      if (bindData !== true && (bindData && bindData[1] & 1)) {
+        return func;
+      }
+      switch (argCount) {
+        case 1: return function(value) {
+          return func.call(thisArg, value);
+        };
+        case 2: return function(a, b) {
+          return func.call(thisArg, a, b);
+        };
+        case 3: return function(value, index, collection) {
+          return func.call(thisArg, value, index, collection);
+        };
+        case 4: return function(accumulator, value, index, collection) {
+          return func.call(thisArg, accumulator, value, index, collection);
+        };
+      }
+      return bind(func, thisArg);
+    }
+
+    /**
+     * The base implementation of `_.flatten` without support for callback
+     * shorthands or `thisArg` binding.
+     *
+     * @private
+     * @param {Array} array The array to flatten.
+     * @param {boolean} [isShallow=false] A flag to restrict flattening to a single level.
+     * @param {boolean} [isArgArrays=false] A flag to restrict flattening to arrays and `arguments` objects.
+     * @param {number} [fromIndex=0] The index to start from.
+     * @returns {Array} Returns a new flattened array.
+     */
+    function baseFlatten(array, isShallow, isArgArrays, fromIndex) {
+      var index = (fromIndex || 0) - 1,
+          length = array ? array.length : 0,
+          result = [];
+
+      while (++index < length) {
+        var value = array[index];
+
+        if (value && typeof value == 'object' && typeof value.length == 'number'
+            && (isArray(value) || isArguments(value))) {
+          // recursively flatten arrays (susceptible to call stack limits)
+          if (!isShallow) {
+            value = baseFlatten(value, isShallow, isArgArrays);
+          }
+          var valIndex = -1,
+              valLength = value.length,
+              resIndex = result.length;
+
+          result.length += valLength;
+          while (++valIndex < valLength) {
+            result[resIndex++] = value[valIndex];
+          }
+        } else if (!isArgArrays) {
+          result.push(value);
+        }
+      }
+      return result;
+    }
+
+    /**
+     * The base implementation of `_.isEqual`, without support for `thisArg` binding,
+     * that allows partial "_.where" style comparisons.
+     *
+     * @private
+     * @param {*} a The value to compare.
+     * @param {*} b The other value to compare.
+     * @param {Function} [callback] The function to customize comparing values.
+     * @param {Function} [isWhere=false] A flag to indicate performing partial comparisons.
+     * @param {Array} [stackA=[]] Tracks traversed `a` objects.
+     * @param {Array} [stackB=[]] Tracks traversed `b` objects.
+     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
+     */
+    function baseIsEqual(a, b, callback, isWhere, stackA, stackB) {
+      // used to indicate that when comparing objects, `a` has at least the properties of `b`
+      if (callback) {
+        var result = callback(a, b);
+        if (typeof result != 'undefined') {
+          return !!result;
+        }
+      }
+      // exit early for identical values
+      if (a === b) {
+        // treat `+0` vs. `-0` as not equal
+        return a !== 0 || (1 / a == 1 / b);
+      }
+      var type = typeof a,
+          otherType = typeof b;
+
+      // exit early for unlike primitive values
+      if (a === a &&
+          !(a && objectTypes[type]) &&
+          !(b && objectTypes[otherType])) {
+        return false;
+      }
+      // exit early for `null` and `undefined` avoiding ES3's Function#call behavior
+      // http://es5.github.io/#x15.3.4.4
+      if (a == null || b == null) {
+        return a === b;
+      }
+      // compare [[Class]] names
+      var className = toString.call(a),
+          otherClass = toString.call(b);
+
+      if (className == argsClass) {
+        className = objectClass;
+      }
+      if (otherClass == argsClass) {
+        otherClass = objectClass;
+      }
+      if (className != otherClass) {
+        return false;
+      }
+      switch (className) {
+        case boolClass:
+        case dateClass:
+          // coerce dates and booleans to numbers, dates to milliseconds and booleans
+          // to `1` or `0` treating invalid dates coerced to `NaN` as not equal
+          return +a == +b;
+
+        case numberClass:
+          // treat `NaN` vs. `NaN` as equal
+          return (a != +a)
+            ? b != +b
+            // but treat `+0` vs. `-0` as not equal
+            : (a == 0 ? (1 / a == 1 / b) : a == +b);
+
+        case regexpClass:
+        case stringClass:
+          // coerce regexes to strings (http://es5.github.io/#x15.10.6.4)
+          // treat string primitives and their corresponding object instances as equal
+          return a == String(b);
+      }
+      var isArr = className == arrayClass;
+      if (!isArr) {
+        // unwrap any `lodash` wrapped values
+        if (hasOwnProperty.call(a, '__wrapped__ ') || hasOwnProperty.call(b, '__wrapped__')) {
+          return baseIsEqual(a.__wrapped__ || a, b.__wrapped__ || b, callback, isWhere, stackA, stackB);
+        }
+        // exit for functions and DOM nodes
+        if (className != objectClass) {
+          return false;
+        }
+        // in older versions of Opera, `arguments` objects have `Array` constructors
+        var ctorA = a.constructor,
+            ctorB = b.constructor;
+
+        // non `Object` object instances with different constructors are not equal
+        if (ctorA != ctorB && !(
+              isFunction(ctorA) && ctorA instanceof ctorA &&
+              isFunction(ctorB) && ctorB instanceof ctorB
+            )) {
+          return false;
+        }
+      }
+      // assume cyclic structures are equal
+      // the algorithm for detecting cyclic structures is adapted from ES 5.1
+      // section 15.12.3, abstract operation `JO` (http://es5.github.io/#x15.12.3)
+      var initedStack = !stackA;
+      stackA || (stackA = getArray());
+      stackB || (stackB = getArray());
+
+      var length = stackA.length;
+      while (length--) {
+        if (stackA[length] == a) {
+          return stackB[length] == b;
+        }
+      }
+      var size = 0;
+      result = true;
+
+      // add `a` and `b` to the stack of traversed objects
+      stackA.push(a);
+      stackB.push(b);
+
+      // recursively compare objects and arrays (susceptible to call stack limits)
+      if (isArr) {
+        length = a.length;
+        size = b.length;
+
+        // compare lengths to determine if a deep comparison is necessary
+        result = size == a.length;
+        if (!result && !isWhere) {
+          return result;
+        }
+        // deep compare the contents, ignoring non-numeric properties
+        while (size--) {
+          var index = length,
+              value = b[size];
+
+          if (isWhere) {
+            while (index--) {
+              if ((result = baseIsEqual(a[index], value, callback, isWhere, stackA, stackB))) {
+                break;
+              }
+            }
+          } else if (!(result = baseIsEqual(a[size], value, callback, isWhere, stackA, stackB))) {
+            break;
+          }
+        }
+        return result;
+      }
+      // deep compare objects using `forIn`, instead of `forOwn`, to avoid `Object.keys`
+      // which, in this case, is more costly
+      forIn(b, function(value, key, b) {
+        if (hasOwnProperty.call(b, key)) {
+          // count the number of properties.
+          size++;
+          // deep compare each property value.
+          return (result = hasOwnProperty.call(a, key) && baseIsEqual(a[key], value, callback, isWhere, stackA, stackB));
+        }
+      });
+
+      if (result && !isWhere) {
+        // ensure both objects have the same number of properties
+        forIn(a, function(value, key, a) {
+          if (hasOwnProperty.call(a, key)) {
+            // `size` will be `-1` if `a` has more properties than `b`
+            return (result = --size > -1);
+          }
+        });
+      }
+      if (initedStack) {
+        releaseArray(stackA);
+        releaseArray(stackB);
+      }
+      return result;
+    }
+
+    /**
+     * The base implementation of `_.merge` without argument juggling or support
+     * for `thisArg` binding.
+     *
+     * @private
+     * @param {Object} object The destination object.
+     * @param {Object} source The source object.
+     * @param {Function} [callback] The function to customize merging properties.
+     * @param {Array} [stackA=[]] Tracks traversed source objects.
+     * @param {Array} [stackB=[]] Associates values with source counterparts.
+     */
+    function baseMerge(object, source, callback, stackA, stackB) {
+      (isArray(source) ? forEach : forOwn)(source, function(source, key) {
+        var found,
+            isArr,
+            result = source,
+            value = object[key];
+
+        if (source && ((isArr = isArray(source)) || isPlainObject(source))) {
+          // avoid merging previously merged cyclic sources
+          var stackLength = stackA.length;
+          while (stackLength--) {
+            if ((found = stackA[stackLength] == source)) {
+              value = stackB[stackLength];
+              break;
+            }
+          }
+          if (!found) {
+            var isShallow;
+            if (callback) {
+              result = callback(value, source);
+              if ((isShallow = typeof result != 'undefined')) {
+                value = result;
+              }
+            }
+            if (!isShallow) {
+              value = isArr
+                ? (isArray(value) ? value : [])
+                : (isPlainObject(value) ? value : {});
+            }
+            // add `source` and associated `value` to the stack of traversed objects
+            stackA.push(source);
+            stackB.push(value);
+
+            // recursively merge objects and arrays (susceptible to call stack limits)
+            if (!isShallow) {
+              baseMerge(value, source, callback, stackA, stackB);
+            }
+          }
+        }
+        else {
+          if (callback) {
+            result = callback(value, source);
+            if (typeof result == 'undefined') {
+              result = source;
+            }
+          }
+          if (typeof result != 'undefined') {
+            value = result;
+          }
+        }
+        object[key] = value;
+      });
+    }
+
+    /**
+     * The base implementation of `_.uniq` without support for callback shorthands
+     * or `thisArg` binding.
+     *
+     * @private
+     * @param {Array} array The array to process.
+     * @param {boolean} [isSorted=false] A flag to indicate that `array` is sorted.
+     * @param {Function} [callback] The function called per iteration.
+     * @returns {Array} Returns a duplicate-value-free array.
+     */
+    function baseUniq(array, isSorted, callback) {
+      var index = -1,
+          indexOf = getIndexOf(),
+          length = array ? array.length : 0,
+          result = [];
+
+      var isLarge = !isSorted && length >= largeArraySize && indexOf === baseIndexOf,
+          seen = (callback || isLarge) ? getArray() : result;
+
+      if (isLarge) {
+        var cache = createCache(seen);
+        if (cache) {
+          indexOf = cacheIndexOf;
+          seen = cache;
+        } else {
+          isLarge = false;
+          seen = callback ? seen : (releaseArray(seen), result);
+        }
+      }
+      while (++index < length) {
+        var value = array[index],
+            computed = callback ? callback(value, index, array) : value;
+
+        if (isSorted
+              ? !index || seen[seen.length - 1] !== computed
+              : indexOf(seen, computed) < 0
+            ) {
+          if (callback || isLarge) {
+            seen.push(computed);
+          }
+          result.push(value);
+        }
+      }
+      if (isLarge) {
+        releaseArray(seen.array);
+        releaseObject(seen);
+      } else if (callback) {
+        releaseArray(seen);
+      }
+      return result;
+    }
+
+    /**
+     * Creates a function that aggregates a collection, creating an object composed
+     * of keys generated from the results of running each element of the collection
+     * through a callback. The given `setter` function sets the keys and values
+     * of the composed object.
+     *
+     * @private
+     * @param {Function} setter The setter function.
+     * @returns {Function} Returns the new aggregator function.
+     */
+    function createAggregator(setter) {
+      return function(collection, callback, thisArg) {
+        var result = {};
+        callback = lodash.createCallback(callback, thisArg, 3);
+
+        var index = -1,
+            length = collection ? collection.length : 0;
+
+        if (typeof length == 'number') {
+          while (++index < length) {
+            var value = collection[index];
+            setter(result, value, callback(value, index, collection), collection);
+          }
+        } else {
+          forOwn(collection, function(value, key, collection) {
+            setter(result, value, callback(value, key, collection), collection);
+          });
+        }
+        return result;
+      };
+    }
+
+    /**
+     * Creates a function that, when called, either curries or invokes `func`
+     * with an optional `this` binding and partially applied arguments.
+     *
+     * @private
+     * @param {Function|string} func The function or method name to reference.
+     * @param {number} bitmask The bitmask of method flags to compose.
+     *  The bitmask may be composed of the following flags:
+     *  1 - `_.bind`
+     *  2 - `_.bindKey`
+     *  4 - `_.curry`
+     *  8 - `_.curry` (bound)
+     *  16 - `_.partial`
+     *  32 - `_.partialRight`
+     * @param {Array} [partialArgs] An array of arguments to prepend to those
+     *  provided to the new function.
+     * @param {Array} [partialRightArgs] An array of arguments to append to those
+     *  provided to the new function.
+     * @param {*} [thisArg] The `this` binding of `func`.
+     * @param {number} [arity] The arity of `func`.
+     * @returns {Function} Returns the new bound function.
+     */
+    function createBound(func, bitmask, partialArgs, partialRightArgs, thisArg, arity) {
+      var isBind = bitmask & 1,
+          isBindKey = bitmask & 2,
+          isCurry = bitmask & 4,
+          isCurryBound = bitmask & 8,
+          isPartial = bitmask & 16,
+          isPartialRight = bitmask & 32,
+          key = func;
+
+      if (!isBindKey && !isFunction(func)) {
+        throw new TypeError;
+      }
+      if (isPartial && !partialArgs.length) {
+        bitmask &= ~16;
+        isPartial = partialArgs = false;
+      }
+      if (isPartialRight && !partialRightArgs.length) {
+        bitmask &= ~32;
+        isPartialRight = partialRightArgs = false;
+      }
+      var bindData = func && func.__bindData__;
+      if (bindData) {
+        if (isBind && !(bindData[1] & 1)) {
+          bindData[4] = thisArg;
+        }
+        if (!isBind && bindData[1] & 1) {
+          bitmask |= 8;
+        }
+        if (isCurry && !(bindData[1] & 4)) {
+          bindData[5] = arity;
+        }
+        if (isPartial) {
+          push.apply(bindData[2] || (bindData[2] = []), partialArgs);
+        }
+        if (isPartialRight) {
+          push.apply(bindData[3] || (bindData[3] = []), partialRightArgs);
+        }
+        bindData[1] |= bitmask;
+        return createBound.apply(null, bindData);
+      }
+      // use `Function#bind` if it exists and is fast
+      // (in V8 `Function#bind` is slower except when partially applied)
+      if (isBind && !(isBindKey || isCurry || isPartialRight) &&
+          (support.fastBind || (nativeBind && isPartial))) {
+        if (isPartial) {
+          var args = [thisArg];
+          push.apply(args, partialArgs);
+        }
+        var bound = isPartial
+          ? nativeBind.apply(func, args)
+          : nativeBind.call(func, thisArg);
+      }
+      else {
+        bound = function() {
+          // `Function#bind` spec
+          // http://es5.github.io/#x15.3.4.5
+          var args = arguments,
+              thisBinding = isBind ? thisArg : this;
+
+          if (isCurry || isPartial || isPartialRight) {
+            args = nativeSlice.call(args);
+            if (isPartial) {
+              unshift.apply(args, partialArgs);
+            }
+            if (isPartialRight) {
+              push.apply(args, partialRightArgs);
+            }
+            if (isCurry && args.length < arity) {
+              bitmask |= 16 & ~32;
+              return createBound(func, (isCurryBound ? bitmask : bitmask & ~3), args, null, thisArg, arity);
+            }
+          }
+          if (isBindKey) {
+            func = thisBinding[key];
+          }
+          if (this instanceof bound) {
+            // ensure `new bound` is an instance of `func`
+            thisBinding = createObject(func.prototype);
+
+            // mimic the constructor's `return` behavior
+            // http://es5.github.io/#x13.2.2
+            var result = func.apply(thisBinding, args);
+            return isObject(result) ? result : thisBinding;
+          }
+          return func.apply(thisBinding, args);
+        };
+      }
+      setBindData(bound, nativeSlice.call(arguments));
+      return bound;
+    }
+
+    /**
+     * Creates a new object with the specified `prototype`.
+     *
+     * @private
+     * @param {Object} prototype The prototype object.
+     * @returns {Object} Returns the new object.
+     */
+    function createObject(prototype) {
+      return isObject(prototype) ? nativeCreate(prototype) : {};
+    }
+    // fallback for browsers without `Object.create`
+    if (!nativeCreate) {
+      createObject = function(prototype) {
+        if (isObject(prototype)) {
+          noop.prototype = prototype;
+          var result = new noop;
+          noop.prototype = null;
+        }
+        return result || {};
+      };
+    }
+
+    /**
+     * Used by `escape` to convert characters to HTML entities.
+     *
+     * @private
+     * @param {string} match The matched character to escape.
+     * @returns {string} Returns the escaped character.
+     */
+    function escapeHtmlChar(match) {
+      return htmlEscapes[match];
+    }
+
+    /**
+     * Gets the appropriate "indexOf" function. If the `_.indexOf` method is
+     * customized, this method returns the custom method, otherwise it returns
+     * the `baseIndexOf` function.
+     *
+     * @private
+     * @returns {Function} Returns the "indexOf" function.
+     */
+    function getIndexOf() {
+      var result = (result = lodash.indexOf) === indexOf ? baseIndexOf : result;
+      return result;
+    }
+
+    /**
+     * Sets `this` binding data on a given function.
+     *
+     * @private
+     * @param {Function} func The function to set data on.
+     * @param {*} value The value to set.
+     */
+    var setBindData = !defineProperty ? noop : function(func, value) {
+      descriptor.value = value;
+      defineProperty(func, '__bindData__', descriptor);
+    };
+
+    /**
+     * A fallback implementation of `isPlainObject` which checks if a given value
+     * is an object created by the `Object` constructor, assuming objects created
+     * by the `Object` constructor have no inherited enumerable properties and that
+     * there are no `Object.prototype` extensions.
+     *
+     * @private
+     * @param {*} value The value to check.
+     * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.
+     */
+    function shimIsPlainObject(value) {
+      var ctor,
+          result;
+
+      // avoid non Object objects, `arguments` objects, and DOM elements
+      if (!(value && toString.call(value) == objectClass) ||
+          (ctor = value.constructor, isFunction(ctor) && !(ctor instanceof ctor))) {
+        return false;
+      }
+      // In most environments an object's own properties are iterated before
+      // its inherited properties. If the last iterated property is an object's
+      // own property then there are no inherited enumerable properties.
+      forIn(value, function(value, key) {
+        result = key;
+      });
+      return typeof result == 'undefined' || hasOwnProperty.call(value, result);
+    }
+
+    /**
+     * Used by `unescape` to convert HTML entities to characters.
+     *
+     * @private
+     * @param {string} match The matched character to unescape.
+     * @returns {string} Returns the unescaped character.
+     */
+    function unescapeHtmlChar(match) {
+      return htmlUnescapes[match];
+    }
+
+    /*--------------------------------------------------------------------------*/
+
+    /**
+     * Checks if `value` is an `arguments` object.
+     *
+     * @static
+     * @memberOf _
+     * @category Objects
+     * @param {*} value The value to check.
+     * @returns {boolean} Returns `true` if the `value` is an `arguments` object, else `false`.
+     * @example
+     *
+     * (function() { return _.isArguments(arguments); })(1, 2, 3);
+     * // => true
+     *
+     * _.isArguments([1, 2, 3]);
+     * // => false
+     */
+    function isArguments(value) {
+      return value && typeof value == 'object' && typeof value.length == 'number' &&
+        toString.call(value) == argsClass || false;
+    }
+
+    /**
+     * Checks if `value` is an array.
+     *
+     * @static
+     * @memberOf _
+     * @type Function
+     * @category Objects
+     * @param {*} value The value to check.
+     * @returns {boolean} Returns `true` if the `value` is an array, else `false`.
+     * @example
+     *
+     * (function() { return _.isArray(arguments); })();
+     * // => false
+     *
+     * _.isArray([1, 2, 3]);
+     * // => true
+     */
+    var isArray = nativeIsArray || function(value) {
+      return value && typeof value == 'object' && typeof value.length == 'number' &&
+        toString.call(value) == arrayClass || false;
+    };
+
+    /**
+     * A fallback implementation of `Object.keys` which produces an array of the
+     * given object's own enumerable property names.
+     *
+     * @private
+     * @type Function
+     * @param {Object} object The object to inspect.
+     * @returns {Array} Returns an array of property names.
+     */
+    var shimKeys = function(object) {
+      var index, iterable = object, result = [];
+      if (!iterable) return result;
+      if (!(objectTypes[typeof object])) return result;
+        for (index in iterable) {
+          if (hasOwnProperty.call(iterable, index)) {
+            result.push(index);
+          }
+        }
+      return result
+    };
+
+    /**
+     * Creates an array composed of the own enumerable property names of an object.
+     *
+     * @static
+     * @memberOf _
+     * @category Objects
+     * @param {Object} object The object to inspect.
+     * @returns {Array} Returns an array of property names.
+     * @example
+     *
+     * _.keys({ 'one': 1, 'two': 2, 'three': 3 });
+     * // => ['one', 'two', 'three'] (property order is not guaranteed across environments)
+     */
+    var keys = !nativeKeys ? shimKeys : function(object) {
+      if (!isObject(object)) {
+        return [];
+      }
+      return nativeKeys(object);
+    };
+
+    /**
+     * Used to convert characters to HTML entities:
+     *
+     * Though the `>` character is escaped for symmetry, characters like `>` and `/`
+     * don't require escaping in HTML and have no special meaning unless they're part
+     * of a tag or an unquoted attribute value.
+     * http://mathiasbynens.be/notes/ambiguous-ampersands (under "semi-related fun fact")
+     */
+    var htmlEscapes = {
+      '&': '&amp;',
+      '<': '&lt;',
+      '>': '&gt;',
+      '"': '&quot;',
+      "'": '&#39;'
+    };
+
+    /** Used to convert HTML entities to characters */
+    var htmlUnescapes = invert(htmlEscapes);
+
+    /** Used to match HTML entities and HTML characters */
+    var reEscapedHtml = RegExp('(' + keys(htmlUnescapes).join('|') + ')', 'g'),
+        reUnescapedHtml = RegExp('[' + keys(htmlEscapes).join('') + ']', 'g');
+
+    /*--------------------------------------------------------------------------*/
+
+    /**
+     * Assigns own enumerable properties of source object(s) to the destination
+     * object. Subsequent sources will overwrite property assignments of previous
+     * sources. If a callback is provided it will be executed to produce the
+     * assigned values. The callback is bound to `thisArg` and invoked with two
+     * arguments; (objectValue, sourceValue).
+     *
+     * @static
+     * @memberOf _
+     * @type Function
+     * @alias extend
+     * @category Objects
+     * @param {Object} object The destination object.
+     * @param {...Object} [source] The source objects.
+     * @param {Function} [callback] The function to customize assigning values.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {Object} Returns the destination object.
+     * @example
+     *
+     * _.assign({ 'name': 'moe' }, { 'age': 40 });
+     * // => { 'name': 'moe', 'age': 40 }
+     *
+     * var defaults = _.partialRight(_.assign, function(a, b) {
+     *   return typeof a == 'undefined' ? b : a;
+     * });
+     *
+     * var food = { 'name': 'apple' };
+     * defaults(food, { 'name': 'banana', 'type': 'fruit' });
+     * // => { 'name': 'apple', 'type': 'fruit' }
+     */
+    var assign = function(object, source, guard) {
+      var index, iterable = object, result = iterable;
+      if (!iterable) return result;
+      var args = arguments,
+          argsIndex = 0,
+          argsLength = typeof guard == 'number' ? 2 : args.length;
+      if (argsLength > 3 && typeof args[argsLength - 2] == 'function') {
+        var callback = baseCreateCallback(args[--argsLength - 1], args[argsLength--], 2);
+      } else if (argsLength > 2 && typeof args[argsLength - 1] == 'function') {
+        callback = args[--argsLength];
+      }
+      while (++argsIndex < argsLength) {
+        iterable = args[argsIndex];
+        if (iterable && objectTypes[typeof iterable]) {
+        var ownIndex = -1,
+            ownProps = objectTypes[typeof iterable] && keys(iterable),
+            length = ownProps ? ownProps.length : 0;
+
+        while (++ownIndex < length) {
+          index = ownProps[ownIndex];
+          result[index] = callback ? callback(result[index], iterable[index]) : iterable[index];
+        }
+        }
+      }
+      return result
+    };
+
+    /**
+     * Creates a clone of `value`. If `deep` is `true` nested objects will also
+     * be cloned, otherwise they will be assigned by reference. If a callback
+     * is provided it will be executed to produce the cloned values. If the
+     * callback returns `undefined` cloning will be handled by the method instead.
+     * The callback is bound to `thisArg` and invoked with one argument; (value).
+     *
+     * @static
+     * @memberOf _
+     * @category Objects
+     * @param {*} value The value to clone.
+     * @param {boolean} [deep=false] Specify a deep clone.
+     * @param {Function} [callback] The function to customize cloning values.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {*} Returns the cloned value.
+     * @example
+     *
+     * var stooges = [
+     *   { 'name': 'moe', 'age': 40 },
+     *   { 'name': 'larry', 'age': 50 }
+     * ];
+     *
+     * var shallow = _.clone(stooges);
+     * shallow[0] === stooges[0];
+     * // => true
+     *
+     * var deep = _.clone(stooges, true);
+     * deep[0] === stooges[0];
+     * // => false
+     *
+     * _.mixin({
+     *   'clone': _.partialRight(_.clone, function(value) {
+     *     return _.isElement(value) ? value.cloneNode(false) : undefined;
+     *   })
+     * });
+     *
+     * var clone = _.clone(document.body);
+     * clone.childNodes.length;
+     * // => 0
+     */
+    function clone(value, deep, callback, thisArg) {
+      // allows working with "Collections" methods without using their `index`
+      // and `collection` arguments for `deep` and `callback`
+      if (typeof deep != 'boolean' && deep != null) {
+        thisArg = callback;
+        callback = deep;
+        deep = false;
+      }
+      return baseClone(value, deep, typeof callback == 'function' && baseCreateCallback(callback, thisArg, 1));
+    }
+
+    /**
+     * Creates a deep clone of `value`. If a callback is provided it will be
+     * executed to produce the cloned values. If the callback returns `undefined`
+     * cloning will be handled by the method instead. The callback is bound to
+     * `thisArg` and invoked with one argument; (value).
+     *
+     * Note: This method is loosely based on the structured clone algorithm. Functions
+     * and DOM nodes are **not** cloned. The enumerable properties of `arguments` objects and
+     * objects created by constructors other than `Object` are cloned to plain `Object` objects.
+     * See http://www.w3.org/TR/html5/infrastructure.html#internal-structured-cloning-algorithm.
+     *
+     * @static
+     * @memberOf _
+     * @category Objects
+     * @param {*} value The value to deep clone.
+     * @param {Function} [callback] The function to customize cloning values.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {*} Returns the deep cloned value.
+     * @example
+     *
+     * var stooges = [
+     *   { 'name': 'moe', 'age': 40 },
+     *   { 'name': 'larry', 'age': 50 }
+     * ];
+     *
+     * var deep = _.cloneDeep(stooges);
+     * deep[0] === stooges[0];
+     * // => false
+     *
+     * var view = {
+     *   'label': 'docs',
+     *   'node': element
+     * };
+     *
+     * var clone = _.cloneDeep(view, function(value) {
+     *   return _.isElement(value) ? value.cloneNode(true) : undefined;
+     * });
+     *
+     * clone.node == view.node;
+     * // => false
+     */
+    function cloneDeep(value, callback, thisArg) {
+      return baseClone(value, true, typeof callback == 'function' && baseCreateCallback(callback, thisArg, 1));
+    }
+
+    /**
+     * Assigns own enumerable properties of source object(s) to the destination
+     * object for all destination properties that resolve to `undefined`. Once a
+     * property is set, additional defaults of the same property will be ignored.
+     *
+     * @static
+     * @memberOf _
+     * @type Function
+     * @category Objects
+     * @param {Object} object The destination object.
+     * @param {...Object} [source] The source objects.
+     * @param- {Object} [guard] Allows working with `_.reduce` without using its
+     *  `key` and `object` arguments as sources.
+     * @returns {Object} Returns the destination object.
+     * @example
+     *
+     * var food = { 'name': 'apple' };
+     * _.defaults(food, { 'name': 'banana', 'type': 'fruit' });
+     * // => { 'name': 'apple', 'type': 'fruit' }
+     */
+    var defaults = function(object, source, guard) {
+      var index, iterable = object, result = iterable;
+      if (!iterable) return result;
+      var args = arguments,
+          argsIndex = 0,
+          argsLength = typeof guard == 'number' ? 2 : args.length;
+      while (++argsIndex < argsLength) {
+        iterable = args[argsIndex];
+        if (iterable && objectTypes[typeof iterable]) {
+        var ownIndex = -1,
+            ownProps = objectTypes[typeof iterable] && keys(iterable),
+            length = ownProps ? ownProps.length : 0;
+
+        while (++ownIndex < length) {
+          index = ownProps[ownIndex];
+          if (typeof result[index] == 'undefined') result[index] = iterable[index];
+        }
+        }
+      }
+      return result
+    };
+
+    /**
+     * This method is like `_.findIndex` except that it returns the key of the
+     * first element that passes the callback check, instead of the element itself.
+     *
+     * @static
+     * @memberOf _
+     * @category Objects
+     * @param {Object} object The object to search.
+     * @param {Function|Object|string} [callback=identity] The function called per
+     *  iteration. If a property name or object is provided it will be used to
+     *  create a "_.pluck" or "_.where" style callback, respectively.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {string|undefined} Returns the key of the found element, else `undefined`.
+     * @example
+     *
+     * _.findKey({ 'a': 1, 'b': 2, 'c': 3, 'd': 4 }, function(num) {
+     *   return num % 2 == 0;
+     * });
+     * // => 'b' (property order is not guaranteed across environments)
+     */
+    function findKey(object, callback, thisArg) {
+      var result;
+      callback = lodash.createCallback(callback, thisArg, 3);
+      forOwn(object, function(value, key, object) {
+        if (callback(value, key, object)) {
+          result = key;
+          return false;
+        }
+      });
+      return result;
+    }
+
+    /**
+     * This method is like `_.findKey` except that it iterates over elements
+     * of a `collection` in the opposite order.
+     *
+     * @static
+     * @memberOf _
+     * @category Objects
+     * @param {Object} object The object to search.
+     * @param {Function|Object|string} [callback=identity] The function called per
+     *  iteration. If a property name or object is provided it will be used to
+     *  create a "_.pluck" or "_.where" style callback, respectively.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {string|undefined} Returns the key of the found element, else `undefined`.
+     * @example
+     *
+     * _.findLastKey({ 'a': 1, 'b': 2, 'c': 3, 'd': 4 }, function(num) {
+     *   return num % 2 == 1;
+     * });
+     * // => returns `c`, assuming `_.findKey` returns `a`
+     */
+    function findLastKey(object, callback, thisArg) {
+      var result;
+      callback = lodash.createCallback(callback, thisArg, 3);
+      forOwnRight(object, function(value, key, object) {
+        if (callback(value, key, object)) {
+          result = key;
+          return false;
+        }
+      });
+      return result;
+    }
+
+    /**
+     * Iterates over own and inherited enumerable properties of an object,
+     * executing the callback for each property. The callback is bound to `thisArg`
+     * and invoked with three arguments; (value, key, object). Callbacks may exit
+     * iteration early by explicitly returning `false`.
+     *
+     * @static
+     * @memberOf _
+     * @type Function
+     * @category Objects
+     * @param {Object} object The object to iterate over.
+     * @param {Function} [callback=identity] The function called per iteration.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {Object} Returns `object`.
+     * @example
+     *
+     * function Dog(name) {
+     *   this.name = name;
+     * }
+     *
+     * Dog.prototype.bark = function() {
+     *   console.log('Woof, woof!');
+     * };
+     *
+     * _.forIn(new Dog('Dagny'), function(value, key) {
+     *   console.log(key);
+     * });
+     * // => logs 'bark' and 'name' (property order is not guaranteed across environments)
+     */
+    var forIn = function(collection, callback, thisArg) {
+      var index, iterable = collection, result = iterable;
+      if (!iterable) return result;
+      if (!objectTypes[typeof iterable]) return result;
+      callback = callback && typeof thisArg == 'undefined' ? callback : baseCreateCallback(callback, thisArg, 3);
+        for (index in iterable) {
+          if (callback(iterable[index], index, collection) === false) return result;
+        }
+      return result
+    };
+
+    /**
+     * This method is like `_.forIn` except that it iterates over elements
+     * of a `collection` in the opposite order.
+     *
+     * @static
+     * @memberOf _
+     * @category Objects
+     * @param {Object} object The object to iterate over.
+     * @param {Function} [callback=identity] The function called per iteration.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {Object} Returns `object`.
+     * @example
+     *
+     * function Dog(name) {
+     *   this.name = name;
+     * }
+     *
+     * Dog.prototype.bark = function() {
+     *   console.log('Woof, woof!');
+     * };
+     *
+     * _.forInRight(new Dog('Dagny'), function(value, key) {
+     *   console.log(key);
+     * });
+     * // => logs 'name' and 'bark' assuming `_.forIn ` logs 'bark' and 'name'
+     */
+    function forInRight(object, callback, thisArg) {
+      var pairs = [];
+
+      forIn(object, function(value, key) {
+        pairs.push(key, value);
+      });
+
+      var length = pairs.length;
+      callback = baseCreateCallback(callback, thisArg, 3);
+      while (length--) {
+        if (callback(pairs[length--], pairs[length], object) === false) {
+          break;
+        }
+      }
+      return object;
+    }
+
+    /**
+     * Iterates over own enumerable properties of an object, executing the callback
+     * for each property. The callback is bound to `thisArg` and invoked with three
+     * arguments; (value, key, object). Callbacks may exit iteration early by
+     * explicitly returning `false`.
+     *
+     * @static
+     * @memberOf _
+     * @type Function
+     * @category Objects
+     * @param {Object} object The object to iterate over.
+     * @param {Function} [callback=identity] The function called per iteration.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {Object} Returns `object`.
+     * @example
+     *
+     * _.forOwn({ '0': 'zero', '1': 'one', 'length': 2 }, function(num, key) {
+     *   console.log(key);
+     * });
+     * // => logs '0', '1', and 'length' (property order is not guaranteed across environments)
+     */
+    var forOwn = function(collection, callback, thisArg) {
+      var index, iterable = collection, result = iterable;
+      if (!iterable) return result;
+      if (!objectTypes[typeof iterable]) return result;
+      callback = callback && typeof thisArg == 'undefined' ? callback : baseCreateCallback(callback, thisArg, 3);
+        var ownIndex = -1,
+            ownProps = objectTypes[typeof iterable] && keys(iterable),
+            length = ownProps ? ownProps.length : 0;
+
+        while (++ownIndex < length) {
+          index = ownProps[ownIndex];
+          if (callback(iterable[index], index, collection) === false) return result;
+        }
+      return result
+    };
+
+    /**
+     * This method is like `_.forOwn` except that it iterates over elements
+     * of a `collection` in the opposite order.
+     *
+     * @static
+     * @memberOf _
+     * @category Objects
+     * @param {Object} object The object to iterate over.
+     * @param {Function} [callback=identity] The function called per iteration.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {Object} Returns `object`.
+     * @example
+     *
+     * _.forOwnRight({ '0': 'zero', '1': 'one', 'length': 2 }, function(num, key) {
+     *   console.log(key);
+     * });
+     * // => logs 'length', '1', and '0' assuming `_.forOwn` logs '0', '1', and 'length'
+     */
+    function forOwnRight(object, callback, thisArg) {
+      var props = keys(object),
+          length = props.length;
+
+      callback = baseCreateCallback(callback, thisArg, 3);
+      while (length--) {
+        var key = props[length];
+        if (callback(object[key], key, object) === false) {
+          break;
+        }
+      }
+      return object;
+    }
+
+    /**
+     * Creates a sorted array of property names of all enumerable properties,
+     * own and inherited, of `object` that have function values.
+     *
+     * @static
+     * @memberOf _
+     * @alias methods
+     * @category Objects
+     * @param {Object} object The object to inspect.
+     * @returns {Array} Returns an array of property names that have function values.
+     * @example
+     *
+     * _.functions(_);
+     * // => ['all', 'any', 'bind', 'bindAll', 'clone', 'compact', 'compose', ...]
+     */
+    function functions(object) {
+      var result = [];
+      forIn(object, function(value, key) {
+        if (isFunction(value)) {
+          result.push(key);
+        }
+      });
+      return result.sort();
+    }
+
+    /**
+     * Checks if the specified object `property` exists and is a direct property,
+     * instead of an inherited property.
+     *
+     * @static
+     * @memberOf _
+     * @category Objects
+     * @param {Object} object The object to check.
+     * @param {string} property The property to check for.
+     * @returns {boolean} Returns `true` if key is a direct property, else `false`.
+     * @example
+     *
+     * _.has({ 'a': 1, 'b': 2, 'c': 3 }, 'b');
+     * // => true
+     */
+    function has(object, property) {
+      return object ? hasOwnProperty.call(object, property) : false;
+    }
+
+    /**
+     * Creates an object composed of the inverted keys and values of the given object.
+     *
+     * @static
+     * @memberOf _
+     * @category Objects
+     * @param {Object} object The object to invert.
+     * @returns {Object} Returns the created inverted object.
+     * @example
+     *
+     *  _.invert({ 'first': 'moe', 'second': 'larry' });
+     * // => { 'moe': 'first', 'larry': 'second' }
+     */
+    function invert(object) {
+      var index = -1,
+          props = keys(object),
+          length = props.length,
+          result = {};
+
+      while (++index < length) {
+        var key = props[index];
+        result[object[key]] = key;
+      }
+      return result;
+    }
+
+    /**
+     * Checks if `value` is a boolean value.
+     *
+     * @static
+     * @memberOf _
+     * @category Objects
+     * @param {*} value The value to check.
+     * @returns {boolean} Returns `true` if the `value` is a boolean value, else `false`.
+     * @example
+     *
+     * _.isBoolean(null);
+     * // => false
+     */
+    function isBoolean(value) {
+      return value === true || value === false || toString.call(value) == boolClass;
+    }
+
+    /**
+     * Checks if `value` is a date.
+     *
+     * @static
+     * @memberOf _
+     * @category Objects
+     * @param {*} value The value to check.
+     * @returns {boolean} Returns `true` if the `value` is a date, else `false`.
+     * @example
+     *
+     * _.isDate(new Date);
+     * // => true
+     */
+    function isDate(value) {
+      return value ? (typeof value == 'object' && toString.call(value) == dateClass) : false;
+    }
+
+    /**
+     * Checks if `value` is a DOM element.
+     *
+     * @static
+     * @memberOf _
+     * @category Objects
+     * @param {*} value The value to check.
+     * @returns {boolean} Returns `true` if the `value` is a DOM element, else `false`.
+     * @example
+     *
+     * _.isElement(document.body);
+     * // => true
+     */
+    function isElement(value) {
+      return value ? value.nodeType === 1 : false;
+    }
+
+    /**
+     * Checks if `value` is empty. Arrays, strings, or `arguments` objects with a
+     * length of `0` and objects with no own enumerable properties are considered
+     * "empty".
+     *
+     * @static
+     * @memberOf _
+     * @category Objects
+     * @param {Array|Object|string} value The value to inspect.
+     * @returns {boolean} Returns `true` if the `value` is empty, else `false`.
+     * @example
+     *
+     * _.isEmpty([1, 2, 3]);
+     * // => false
+     *
+     * _.isEmpty({});
+     * // => true
+     *
+     * _.isEmpty('');
+     * // => true
+     */
+    function isEmpty(value) {
+      var result = true;
+      if (!value) {
+        return result;
+      }
+      var className = toString.call(value),
+          length = value.length;
+
+      if ((className == arrayClass || className == stringClass || className == argsClass ) ||
+          (className == objectClass && typeof length == 'number' && isFunction(value.splice))) {
+        return !length;
+      }
+      forOwn(value, function() {
+        return (result = false);
+      });
+      return result;
+    }
+
+    /**
+     * Performs a deep comparison between two values to determine if they are
+     * equivalent to each other. If a callback is provided it will be executed
+     * to compare values. If the callback returns `undefined` comparisons will
+     * be handled by the method instead. The callback is bound to `thisArg` and
+     * invoked with two arguments; (a, b).
+     *
+     * @static
+     * @memberOf _
+     * @category Objects
+     * @param {*} a The value to compare.
+     * @param {*} b The other value to compare.
+     * @param {Function} [callback] The function to customize comparing values.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
+     * @example
+     *
+     * var moe = { 'name': 'moe', 'age': 40 };
+     * var copy = { 'name': 'moe', 'age': 40 };
+     *
+     * moe == copy;
+     * // => false
+     *
+     * _.isEqual(moe, copy);
+     * // => true
+     *
+     * var words = ['hello', 'goodbye'];
+     * var otherWords = ['hi', 'goodbye'];
+     *
+     * _.isEqual(words, otherWords, function(a, b) {
+     *   var reGreet = /^(?:hello|hi)$/i,
+     *       aGreet = _.isString(a) && reGreet.test(a),
+     *       bGreet = _.isString(b) && reGreet.test(b);
+     *
+     *   return (aGreet || bGreet) ? (aGreet == bGreet) : undefined;
+     * });
+     * // => true
+     */
+    function isEqual(a, b, callback, thisArg) {
+      return baseIsEqual(a, b, typeof callback == 'function' && baseCreateCallback(callback, thisArg, 2));
+    }
+
+    /**
+     * Checks if `value` is, or can be coerced to, a finite number.
+     *
+     * Note: This is not the same as native `isFinite` which will return true for
+     * booleans and empty strings. See http://es5.github.io/#x15.1.2.5.
+     *
+     * @static
+     * @memberOf _
+     * @category Objects
+     * @param {*} value The value to check.
+     * @returns {boolean} Returns `true` if the `value` is finite, else `false`.
+     * @example
+     *
+     * _.isFinite(-101);
+     * // => true
+     *
+     * _.isFinite('10');
+     * // => true
+     *
+     * _.isFinite(true);
+     * // => false
+     *
+     * _.isFinite('');
+     * // => false
+     *
+     * _.isFinite(Infinity);
+     * // => false
+     */
+    function isFinite(value) {
+      return nativeIsFinite(value) && !nativeIsNaN(parseFloat(value));
+    }
+
+    /**
+     * Checks if `value` is a function.
+     *
+     * @static
+     * @memberOf _
+     * @category Objects
+     * @param {*} value The value to check.
+     * @returns {boolean} Returns `true` if the `value` is a function, else `false`.
+     * @example
+     *
+     * _.isFunction(_);
+     * // => true
+     */
+    function isFunction(value) {
+      return typeof value == 'function';
+    }
+
+    /**
+     * Checks if `value` is the language type of Object.
+     * (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
+     *
+     * @static
+     * @memberOf _
+     * @category Objects
+     * @param {*} value The value to check.
+     * @returns {boolean} Returns `true` if the `value` is an object, else `false`.
+     * @example
+     *
+     * _.isObject({});
+     * // => true
+     *
+     * _.isObject([1, 2, 3]);
+     * // => true
+     *
+     * _.isObject(1);
+     * // => false
+     */
+    function isObject(value) {
+      // check if the value is the ECMAScript language type of Object
+      // http://es5.github.io/#x8
+      // and avoid a V8 bug
+      // http://code.google.com/p/v8/issues/detail?id=2291
+      return !!(value && objectTypes[typeof value]);
+    }
+
+    /**
+     * Checks if `value` is `NaN`.
+     *
+     * Note: This is not the same as native `isNaN` which will return `true` for
+     * `undefined` and other non-numeric values. See http://es5.github.io/#x15.1.2.4.
+     *
+     * @static
+     * @memberOf _
+     * @category Objects
+     * @param {*} value The value to check.
+     * @returns {boolean} Returns `true` if the `value` is `NaN`, else `false`.
+     * @example
+     *
+     * _.isNaN(NaN);
+     * // => true
+     *
+     * _.isNaN(new Number(NaN));
+     * // => true
+     *
+     * isNaN(undefined);
+     * // => true
+     *
+     * _.isNaN(undefined);
+     * // => false
+     */
+    function isNaN(value) {
+      // `NaN` as a primitive is the only value that is not equal to itself
+      // (perform the [[Class]] check first to avoid errors with some host objects in IE)
+      return isNumber(value) && value != +value;
+    }
+
+    /**
+     * Checks if `value` is `null`.
+     *
+     * @static
+     * @memberOf _
+     * @category Objects
+     * @param {*} value The value to check.
+     * @returns {boolean} Returns `true` if the `value` is `null`, else `false`.
+     * @example
+     *
+     * _.isNull(null);
+     * // => true
+     *
+     * _.isNull(undefined);
+     * // => false
+     */
+    function isNull(value) {
+      return value === null;
+    }
+
+    /**
+     * Checks if `value` is a number.
+     *
+     * Note: `NaN` is considered a number. See http://es5.github.io/#x8.5.
+     *
+     * @static
+     * @memberOf _
+     * @category Objects
+     * @param {*} value The value to check.
+     * @returns {boolean} Returns `true` if the `value` is a number, else `false`.
+     * @example
+     *
+     * _.isNumber(8.4 * 5);
+     * // => true
+     */
+    function isNumber(value) {
+      return typeof value == 'number' || toString.call(value) == numberClass;
+    }
+
+    /**
+     * Checks if `value` is an object created by the `Object` constructor.
+     *
+     * @static
+     * @memberOf _
+     * @category Objects
+     * @param {*} value The value to check.
+     * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.
+     * @example
+     *
+     * function Stooge(name, age) {
+     *   this.name = name;
+     *   this.age = age;
+     * }
+     *
+     * _.isPlainObject(new Stooge('moe', 40));
+     * // => false
+     *
+     * _.isPlainObject([1, 2, 3]);
+     * // => false
+     *
+     * _.isPlainObject({ 'name': 'moe', 'age': 40 });
+     * // => true
+     */
+    var isPlainObject = function(value) {
+      if (!(value && toString.call(value) == objectClass)) {
+        return false;
+      }
+      var valueOf = value.valueOf,
+          objProto = typeof valueOf == 'function' && (objProto = getPrototypeOf(valueOf)) && getPrototypeOf(objProto);
+
+      return objProto
+        ? (value == objProto || getPrototypeOf(value) == objProto)
+        : shimIsPlainObject(value);
+    };
+
+    /**
+     * Checks if `value` is a regular expression.
+     *
+     * @static
+     * @memberOf _
+     * @category Objects
+     * @param {*} value The value to check.
+     * @returns {boolean} Returns `true` if the `value` is a regular expression, else `false`.
+     * @example
+     *
+     * _.isRegExp(/moe/);
+     * // => true
+     */
+    function isRegExp(value) {
+      return value ? (typeof value == 'object' && toString.call(value) == regexpClass) : false;
+    }
+
+    /**
+     * Checks if `value` is a string.
+     *
+     * @static
+     * @memberOf _
+     * @category Objects
+     * @param {*} value The value to check.
+     * @returns {boolean} Returns `true` if the `value` is a string, else `false`.
+     * @example
+     *
+     * _.isString('moe');
+     * // => true
+     */
+    function isString(value) {
+      return typeof value == 'string' || toString.call(value) == stringClass;
+    }
+
+    /**
+     * Checks if `value` is `undefined`.
+     *
+     * @static
+     * @memberOf _
+     * @category Objects
+     * @param {*} value The value to check.
+     * @returns {boolean} Returns `true` if the `value` is `undefined`, else `false`.
+     * @example
+     *
+     * _.isUndefined(void 0);
+     * // => true
+     */
+    function isUndefined(value) {
+      return typeof value == 'undefined';
+    }
+
+    /**
+     * Recursively merges own enumerable properties of the source object(s), that
+     * don't resolve to `undefined` into the destination object. Subsequent sources
+     * will overwrite property assignments of previous sources. If a callback is
+     * provided it will be executed to produce the merged values of the destination
+     * and source properties. If the callback returns `undefined` merging will
+     * be handled by the method instead. The callback is bound to `thisArg` and
+     * invoked with two arguments; (objectValue, sourceValue).
+     *
+     * @static
+     * @memberOf _
+     * @category Objects
+     * @param {Object} object The destination object.
+     * @param {...Object} [source] The source objects.
+     * @param {Function} [callback] The function to customize merging properties.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {Object} Returns the destination object.
+     * @example
+     *
+     * var names = {
+     *   'stooges': [
+     *     { 'name': 'moe' },
+     *     { 'name': 'larry' }
+     *   ]
+     * };
+     *
+     * var ages = {
+     *   'stooges': [
+     *     { 'age': 40 },
+     *     { 'age': 50 }
+     *   ]
+     * };
+     *
+     * _.merge(names, ages);
+     * // => { 'stooges': [{ 'name': 'moe', 'age': 40 }, { 'name': 'larry', 'age': 50 }] }
+     *
+     * var food = {
+     *   'fruits': ['apple'],
+     *   'vegetables': ['beet']
+     * };
+     *
+     * var otherFood = {
+     *   'fruits': ['banana'],
+     *   'vegetables': ['carrot']
+     * };
+     *
+     * _.merge(food, otherFood, function(a, b) {
+     *   return _.isArray(a) ? a.concat(b) : undefined;
+     * });
+     * // => { 'fruits': ['apple', 'banana'], 'vegetables': ['beet', 'carrot] }
+     */
+    function merge(object) {
+      var args = arguments,
+          length = 2;
+
+      if (!isObject(object)) {
+        return object;
+      }
+      // allows working with `_.reduce` and `_.reduceRight` without using
+      // their `index` and `collection` arguments
+      if (typeof args[2] != 'number') {
+        length = args.length;
+      }
+      if (length > 3 && typeof args[length - 2] == 'function') {
+        var callback = baseCreateCallback(args[--length - 1], args[length--], 2);
+      } else if (length > 2 && typeof args[length - 1] == 'function') {
+        callback = args[--length];
+      }
+      var sources = nativeSlice.call(arguments, 1, length),
+          index = -1,
+          stackA = getArray(),
+          stackB = getArray();
+
+      while (++index < length) {
+        baseMerge(object, sources[index], callback, stackA, stackB);
+      }
+      releaseArray(stackA);
+      releaseArray(stackB);
+      return object;
+    }
+
+    /**
+     * Creates a shallow clone of `object` excluding the specified properties.
+     * Property names may be specified as individual arguments or as arrays of
+     * property names. If a callback is provided it will be executed for each
+     * property of `object` omitting the properties the callback returns truey
+     * for. The callback is bound to `thisArg` and invoked with three arguments;
+     * (value, key, object).
+     *
+     * @static
+     * @memberOf _
+     * @category Objects
+     * @param {Object} object The source object.
+     * @param {Function|...string|string[]} [callback] The properties to omit or the
+     *  function called per iteration.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {Object} Returns an object without the omitted properties.
+     * @example
+     *
+     * _.omit({ 'name': 'moe', 'age': 40 }, 'age');
+     * // => { 'name': 'moe' }
+     *
+     * _.omit({ 'name': 'moe', 'age': 40 }, function(value) {
+     *   return typeof value == 'number';
+     * });
+     * // => { 'name': 'moe' }
+     */
+    function omit(object, callback, thisArg) {
+      var indexOf = getIndexOf(),
+          isFunc = typeof callback == 'function',
+          result = {};
+
+      if (isFunc) {
+        callback = lodash.createCallback(callback, thisArg, 3);
+      } else {
+        var props = baseFlatten(arguments, true, false, 1);
+      }
+      forIn(object, function(value, key, object) {
+        if (isFunc
+              ? !callback(value, key, object)
+              : indexOf(props, key) < 0
+            ) {
+          result[key] = value;
+        }
+      });
+      return result;
+    }
+
+    /**
+     * Creates a two dimensional array of an object's key-value pairs,
+     * i.e. `[[key1, value1], [key2, value2]]`.
+     *
+     * @static
+     * @memberOf _
+     * @category Objects
+     * @param {Object} object The object to inspect.
+     * @returns {Array} Returns new array of key-value pairs.
+     * @example
+     *
+     * _.pairs({ 'moe': 30, 'larry': 40 });
+     * // => [['moe', 30], ['larry', 40]] (property order is not guaranteed across environments)
+     */
+    function pairs(object) {
+      var index = -1,
+          props = keys(object),
+          length = props.length,
+          result = Array(length);
+
+      while (++index < length) {
+        var key = props[index];
+        result[index] = [key, object[key]];
+      }
+      return result;
+    }
+
+    /**
+     * Creates a shallow clone of `object` composed of the specified properties.
+     * Property names may be specified as individual arguments or as arrays of
+     * property names. If a callback is provided it will be executed for each
+     * property of `object` picking the properties the callback returns truey
+     * for. The callback is bound to `thisArg` and invoked with three arguments;
+     * (value, key, object).
+     *
+     * @static
+     * @memberOf _
+     * @category Objects
+     * @param {Object} object The source object.
+     * @param {Function|...string|string[]} [callback] The function called per
+     *  iteration or property names to pick, specified as individual property
+     *  names or arrays of property names.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {Object} Returns an object composed of the picked properties.
+     * @example
+     *
+     * _.pick({ 'name': 'moe', '_userid': 'moe1' }, 'name');
+     * // => { 'name': 'moe' }
+     *
+     * _.pick({ 'name': 'moe', '_userid': 'moe1' }, function(value, key) {
+     *   return key.charAt(0) != '_';
+     * });
+     * // => { 'name': 'moe' }
+     */
+    function pick(object, callback, thisArg) {
+      var result = {};
+      if (typeof callback != 'function') {
+        var index = -1,
+            props = baseFlatten(arguments, true, false, 1),
+            length = isObject(object) ? props.length : 0;
+
+        while (++index < length) {
+          var key = props[index];
+          if (key in object) {
+            result[key] = object[key];
+          }
+        }
+      } else {
+        callback = lodash.createCallback(callback, thisArg, 3);
+        forIn(object, function(value, key, object) {
+          if (callback(value, key, object)) {
+            result[key] = value;
+          }
+        });
+      }
+      return result;
+    }
+
+    /**
+     * An alternative to `_.reduce` this method transforms `object` to a new
+     * `accumulator` object which is the result of running each of its elements
+     * through a callback, with each callback execution potentially mutating
+     * the `accumulator` object. The callback is bound to `thisArg` and invoked
+     * with four arguments; (accumulator, value, key, object). Callbacks may exit
+     * iteration early by explicitly returning `false`.
+     *
+     * @static
+     * @memberOf _
+     * @category Objects
+     * @param {Array|Object} collection The collection to iterate over.
+     * @param {Function} [callback=identity] The function called per iteration.
+     * @param {*} [accumulator] The custom accumulator value.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {*} Returns the accumulated value.
+     * @example
+     *
+     * var squares = _.transform([1, 2, 3, 4, 5, 6, 7, 8, 9, 10], function(result, num) {
+     *   num *= num;
+     *   if (num % 2) {
+     *     return result.push(num) < 3;
+     *   }
+     * });
+     * // => [1, 9, 25]
+     *
+     * var mapped = _.transform({ 'a': 1, 'b': 2, 'c': 3 }, function(result, num, key) {
+     *   result[key] = num * 3;
+     * });
+     * // => { 'a': 3, 'b': 6, 'c': 9 }
+     */
+    function transform(object, callback, accumulator, thisArg) {
+      var isArr = isArray(object);
+      callback = baseCreateCallback(callback, thisArg, 4);
+
+      if (accumulator == null) {
+        if (isArr) {
+          accumulator = [];
+        } else {
+          var ctor = object && object.constructor,
+              proto = ctor && ctor.prototype;
+
+          accumulator = createObject(proto);
+        }
+      }
+      (isArr ? forEach : forOwn)(object, function(value, index, object) {
+        return callback(accumulator, value, index, object);
+      });
+      return accumulator;
+    }
+
+    /**
+     * Creates an array composed of the own enumerable property values of `object`.
+     *
+     * @static
+     * @memberOf _
+     * @category Objects
+     * @param {Object} object The object to inspect.
+     * @returns {Array} Returns an array of property values.
+     * @example
+     *
+     * _.values({ 'one': 1, 'two': 2, 'three': 3 });
+     * // => [1, 2, 3] (property order is not guaranteed across environments)
+     */
+    function values(object) {
+      var index = -1,
+          props = keys(object),
+          length = props.length,
+          result = Array(length);
+
+      while (++index < length) {
+        result[index] = object[props[index]];
+      }
+      return result;
+    }
+
+    /*--------------------------------------------------------------------------*/
+
+    /**
+     * Creates an array of elements from the specified indexes, or keys, of the
+     * `collection`. Indexes may be specified as individual arguments or as arrays
+     * of indexes.
+     *
+     * @static
+     * @memberOf _
+     * @category Collections
+     * @param {Array|Object|string} collection The collection to iterate over.
+     * @param {...(number|number[]|string|string[])} [index] The indexes of `collection`
+     *   to retrieve, specified as individual indexes or arrays of indexes.
+     * @returns {Array} Returns a new array of elements corresponding to the
+     *  provided indexes.
+     * @example
+     *
+     * _.at(['a', 'b', 'c', 'd', 'e'], [0, 2, 4]);
+     * // => ['a', 'c', 'e']
+     *
+     * _.at(['moe', 'larry', 'curly'], 0, 2);
+     * // => ['moe', 'curly']
+     */
+    function at(collection) {
+      var args = arguments,
+          index = -1,
+          props = baseFlatten(args, true, false, 1),
+          length = (args[2] && args[2][args[1]] === collection) ? 1 : props.length,
+          result = Array(length);
+
+      while(++index < length) {
+        result[index] = collection[props[index]];
+      }
+      return result;
+    }
+
+    /**
+     * Checks if a given value is present in a collection using strict equality
+     * for comparisons, i.e. `===`. If `fromIndex` is negative, it is used as the
+     * offset from the end of the collection.
+     *
+     * @static
+     * @memberOf _
+     * @alias include
+     * @category Collections
+     * @param {Array|Object|string} collection The collection to iterate over.
+     * @param {*} target The value to check for.
+     * @param {number} [fromIndex=0] The index to search from.
+     * @returns {boolean} Returns `true` if the `target` element is found, else `false`.
+     * @example
+     *
+     * _.contains([1, 2, 3], 1);
+     * // => true
+     *
+     * _.contains([1, 2, 3], 1, 2);
+     * // => false
+     *
+     * _.contains({ 'name': 'moe', 'age': 40 }, 'moe');
+     * // => true
+     *
+     * _.contains('curly', 'ur');
+     * // => true
+     */
+    function contains(collection, target, fromIndex) {
+      var index = -1,
+          indexOf = getIndexOf(),
+          length = collection ? collection.length : 0,
+          result = false;
+
+      fromIndex = (fromIndex < 0 ? nativeMax(0, length + fromIndex) : fromIndex) || 0;
+      if (isArray(collection)) {
+        result = indexOf(collection, target, fromIndex) > -1;
+      } else if (typeof length == 'number') {
+        result = (isString(collection) ? collection.indexOf(target, fromIndex) : indexOf(collection, target, fromIndex)) > -1;
+      } else {
+        forOwn(collection, function(value) {
+          if (++index >= fromIndex) {
+            return !(result = value === target);
+          }
+        });
+      }
+      return result;
+    }
+
+    /**
+     * Creates an object composed of keys generated from the results of running
+     * each element of `collection` through the callback. The corresponding value
+     * of each key is the number of times the key was returned by the callback.
+     * The callback is bound to `thisArg` and invoked with three arguments;
+     * (value, index|key, collection).
+     *
+     * If a property name is provided for `callback` the created "_.pluck" style
+     * callback will return the property value of the given element.
+     *
+     * If an object is provided for `callback` the created "_.where" style callback
+     * will return `true` for elements that have the properties of the given object,
+     * else `false`.
+     *
+     * @static
+     * @memberOf _
+     * @category Collections
+     * @param {Array|Object|string} collection The collection to iterate over.
+     * @param {Function|Object|string} [callback=identity] The function called
+     *  per iteration. If a property name or object is provided it will be used
+     *  to create a "_.pluck" or "_.where" style callback, respectively.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {Object} Returns the composed aggregate object.
+     * @example
+     *
+     * _.countBy([4.3, 6.1, 6.4], function(num) { return Math.floor(num); });
+     * // => { '4': 1, '6': 2 }
+     *
+     * _.countBy([4.3, 6.1, 6.4], function(num) { return this.floor(num); }, Math);
+     * // => { '4': 1, '6': 2 }
+     *
+     * _.countBy(['one', 'two', 'three'], 'length');
+     * // => { '3': 2, '5': 1 }
+     */
+    var countBy = createAggregator(function(result, value, key) {
+      (hasOwnProperty.call(result, key) ? result[key]++ : result[key] = 1);
+    });
+
+    /**
+     * Checks if the given callback returns truey value for **all** elements of
+     * a collection. The callback is bound to `thisArg` and invoked with three
+     * arguments; (value, index|key, collection).
+     *
+     * If a property name is provided for `callback` the created "_.pluck" style
+     * callback will return the property value of the given element.
+     *
+     * If an object is provided for `callback` the created "_.where" style callback
+     * will return `true` for elements that have the properties of the given object,
+     * else `false`.
+     *
+     * @static
+     * @memberOf _
+     * @alias all
+     * @category Collections
+     * @param {Array|Object|string} collection The collection to iterate over.
+     * @param {Function|Object|string} [callback=identity] The function called
+     *  per iteration. If a property name or object is provided it will be used
+     *  to create a "_.pluck" or "_.where" style callback, respectively.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {boolean} Returns `true` if all elements passed the callback check,
+     *  else `false`.
+     * @example
+     *
+     * _.every([true, 1, null, 'yes'], Boolean);
+     * // => false
+     *
+     * var stooges = [
+     *   { 'name': 'moe', 'age': 40 },
+     *   { 'name': 'larry', 'age': 50 }
+     * ];
+     *
+     * // using "_.pluck" callback shorthand
+     * _.every(stooges, 'age');
+     * // => true
+     *
+     * // using "_.where" callback shorthand
+     * _.every(stooges, { 'age': 50 });
+     * // => false
+     */
+    function every(collection, callback, thisArg) {
+      var result = true;
+      callback = lodash.createCallback(callback, thisArg, 3);
+
+      var index = -1,
+          length = collection ? collection.length : 0;
+
+      if (typeof length == 'number') {
+        while (++index < length) {
+          if (!(result = !!callback(collection[index], index, collection))) {
+            break;
+          }
+        }
+      } else {
+        forOwn(collection, function(value, index, collection) {
+          return (result = !!callback(value, index, collection));
+        });
+      }
+      return result;
+    }
+
+    /**
+     * Iterates over elements of a collection, returning an array of all elements
+     * the callback returns truey for. The callback is bound to `thisArg` and
+     * invoked with three arguments; (value, index|key, collection).
+     *
+     * If a property name is provided for `callback` the created "_.pluck" style
+     * callback will return the property value of the given element.
+     *
+     * If an object is provided for `callback` the created "_.where" style callback
+     * will return `true` for elements that have the properties of the given object,
+     * else `false`.
+     *
+     * @static
+     * @memberOf _
+     * @alias select
+     * @category Collections
+     * @param {Array|Object|string} collection The collection to iterate over.
+     * @param {Function|Object|string} [callback=identity] The function called
+     *  per iteration. If a property name or object is provided it will be used
+     *  to create a "_.pluck" or "_.where" style callback, respectively.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {Array} Returns a new array of elements that passed the callback check.
+     * @example
+     *
+     * var evens = _.filter([1, 2, 3, 4, 5, 6], function(num) { return num % 2 == 0; });
+     * // => [2, 4, 6]
+     *
+     * var food = [
+     *   { 'name': 'apple',  'organic': false, 'type': 'fruit' },
+     *   { 'name': 'carrot', 'organic': true,  'type': 'vegetable' }
+     * ];
+     *
+     * // using "_.pluck" callback shorthand
+     * _.filter(food, 'organic');
+     * // => [{ 'name': 'carrot', 'organic': true, 'type': 'vegetable' }]
+     *
+     * // using "_.where" callback shorthand
+     * _.filter(food, { 'type': 'fruit' });
+     * // => [{ 'name': 'apple', 'organic': false, 'type': 'fruit' }]
+     */
+    function filter(collection, callback, thisArg) {
+      var result = [];
+      callback = lodash.createCallback(callback, thisArg, 3);
+
+      var index = -1,
+          length = collection ? collection.length : 0;
+
+      if (typeof length == 'number') {
+        while (++index < length) {
+          var value = collection[index];
+          if (callback(value, index, collection)) {
+            result.push(value);
+          }
+        }
+      } else {
+        forOwn(collection, function(value, index, collection) {
+          if (callback(value, index, collection)) {
+            result.push(value);
+          }
+        });
+      }
+      return result;
+    }
+
+    /**
+     * Iterates over elements of a collection, returning the first element that
+     * the callback returns truey for. The callback is bound to `thisArg` and
+     * invoked with three arguments; (value, index|key, collection).
+     *
+     * If a property name is provided for `callback` the created "_.pluck" style
+     * callback will return the property value of the given element.
+     *
+     * If an object is provided for `callback` the created "_.where" style callback
+     * will return `true` for elements that have the properties of the given object,
+     * else `false`.
+     *
+     * @static
+     * @memberOf _
+     * @alias detect, findWhere
+     * @category Collections
+     * @param {Array|Object|string} collection The collection to iterate over.
+     * @param {Function|Object|string} [callback=identity] The function called
+     *  per iteration. If a property name or object is provided it will be used
+     *  to create a "_.pluck" or "_.where" style callback, respectively.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {*} Returns the found element, else `undefined`.
+     * @example
+     *
+     * _.find([1, 2, 3, 4], function(num) {
+     *   return num % 2 == 0;
+     * });
+     * // => 2
+     *
+     * var food = [
+     *   { 'name': 'apple',  'organic': false, 'type': 'fruit' },
+     *   { 'name': 'banana', 'organic': true,  'type': 'fruit' },
+     *   { 'name': 'beet',   'organic': false, 'type': 'vegetable' }
+     * ];
+     *
+     * // using "_.where" callback shorthand
+     * _.find(food, { 'type': 'vegetable' });
+     * // => { 'name': 'beet', 'organic': false, 'type': 'vegetable' }
+     *
+     * // using "_.pluck" callback shorthand
+     * _.find(food, 'organic');
+     * // => { 'name': 'banana', 'organic': true, 'type': 'fruit' }
+     */
+    function find(collection, callback, thisArg) {
+      callback = lodash.createCallback(callback, thisArg, 3);
+
+      var index = -1,
+          length = collection ? collection.length : 0;
+
+      if (typeof length == 'number') {
+        while (++index < length) {
+          var value = collection[index];
+          if (callback(value, index, collection)) {
+            return value;
+          }
+        }
+      } else {
+        var result;
+        forOwn(collection, function(value, index, collection) {
+          if (callback(value, index, collection)) {
+            result = value;
+            return false;
+          }
+        });
+        return result;
+      }
+    }
+
+    /**
+     * This method is like `_.find` except that it iterates over elements
+     * of a `collection` from right to left.
+     *
+     * @static
+     * @memberOf _
+     * @category Collections
+     * @param {Array|Object|string} collection The collection to iterate over.
+     * @param {Function|Object|string} [callback=identity] The function called
+     *  per iteration. If a property name or object is provided it will be used
+     *  to create a "_.pluck" or "_.where" style callback, respectively.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {*} Returns the found element, else `undefined`.
+     * @example
+     *
+     * _.findLast([1, 2, 3, 4], function(num) {
+     *   return num % 2 == 1;
+     * });
+     * // => 3
+     */
+    function findLast(collection, callback, thisArg) {
+      var result;
+      callback = lodash.createCallback(callback, thisArg, 3);
+      forEachRight(collection, function(value, index, collection) {
+        if (callback(value, index, collection)) {
+          result = value;
+          return false;
+        }
+      });
+      return result;
+    }
+
+    /**
+     * Iterates over elements of a collection, executing the callback for each
+     * element. The callback is bound to `thisArg` and invoked with three arguments;
+     * (value, index|key, collection). Callbacks may exit iteration early by
+     * explicitly returning `false`.
+     *
+     * @static
+     * @memberOf _
+     * @alias each
+     * @category Collections
+     * @param {Array|Object|string} collection The collection to iterate over.
+     * @param {Function} [callback=identity] The function called per iteration.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {Array|Object|string} Returns `collection`.
+     * @example
+     *
+     * _([1, 2, 3]).forEach(function(num) { console.log(num); }).join(',');
+     * // => logs each number and returns '1,2,3'
+     *
+     * _.forEach({ 'one': 1, 'two': 2, 'three': 3 }, function(num) { console.log(num); });
+     * // => logs each number and returns the object (property order is not guaranteed across environments)
+     */
+    function forEach(collection, callback, thisArg) {
+      var index = -1,
+          length = collection ? collection.length : 0;
+
+      callback = callback && typeof thisArg == 'undefined' ? callback : baseCreateCallback(callback, thisArg, 3);
+      if (typeof length == 'number') {
+        while (++index < length) {
+          if (callback(collection[index], index, collection) === false) {
+            break;
+          }
+        }
+      } else {
+        forOwn(collection, callback);
+      }
+      return collection;
+    }
+
+    /**
+     * This method is like `_.forEach` except that it iterates over elements
+     * of a `collection` from right to left.
+     *
+     * @static
+     * @memberOf _
+     * @alias eachRight
+     * @category Collections
+     * @param {Array|Object|string} collection The collection to iterate over.
+     * @param {Function} [callback=identity] The function called per iteration.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {Array|Object|string} Returns `collection`.
+     * @example
+     *
+     * _([1, 2, 3]).forEachRight(function(num) { console.log(num); }).join(',');
+     * // => logs each number from right to left and returns '3,2,1'
+     */
+    function forEachRight(collection, callback, thisArg) {
+      var length = collection ? collection.length : 0;
+      callback = callback && typeof thisArg == 'undefined' ? callback : baseCreateCallback(callback, thisArg, 3);
+      if (typeof length == 'number') {
+        while (length--) {
+          if (callback(collection[length], length, collection) === false) {
+            break;
+          }
+        }
+      } else {
+        var props = keys(collection);
+        length = props.length;
+        forOwn(collection, function(value, key, collection) {
+          key = props ? props[--length] : --length;
+          return callback(collection[key], key, collection);
+        });
+      }
+      return collection;
+    }
+
+    /**
+     * Creates an object composed of keys generated from the results of running
+     * each element of a collection through the callback. The corresponding value
+     * of each key is an array of the elements responsible for generating the key.
+     * The callback is bound to `thisArg` and invoked with three arguments;
+     * (value, index|key, collection).
+     *
+     * If a property name is provided for `callback` the created "_.pluck" style
+     * callback will return the property value of the given element.
+     *
+     * If an object is provided for `callback` the created "_.where" style callback
+     * will return `true` for elements that have the properties of the given object,
+     * else `false`
+     *
+     * @static
+     * @memberOf _
+     * @category Collections
+     * @param {Array|Object|string} collection The collection to iterate over.
+     * @param {Function|Object|string} [callback=identity] The function called
+     *  per iteration. If a property name or object is provided it will be used
+     *  to create a "_.pluck" or "_.where" style callback, respectively.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {Object} Returns the composed aggregate object.
+     * @example
+     *
+     * _.groupBy([4.2, 6.1, 6.4], function(num) { return Math.floor(num); });
+     * // => { '4': [4.2], '6': [6.1, 6.4] }
+     *
+     * _.groupBy([4.2, 6.1, 6.4], function(num) { return this.floor(num); }, Math);
+     * // => { '4': [4.2], '6': [6.1, 6.4] }
+     *
+     * // using "_.pluck" callback shorthand
+     * _.groupBy(['one', 'two', 'three'], 'length');
+     * // => { '3': ['one', 'two'], '5': ['three'] }
+     */
+    var groupBy = createAggregator(function(result, value, key) {
+      (hasOwnProperty.call(result, key) ? result[key] : result[key] = []).push(value);
+    });
+
+    /**
+     * Creates an object composed of keys generated from the results of running
+     * each element of the collection through the given callback. The corresponding
+     * value of each key is the last element responsible for generating the key.
+     * The callback is bound to `thisArg` and invoked with three arguments;
+     * (value, index|key, collection).
+     *
+     * If a property name is provided for `callback` the created "_.pluck" style
+     * callback will return the property value of the given element.
+     *
+     * If an object is provided for `callback` the created "_.where" style callback
+     * will return `true` for elements that have the properties of the given object,
+     * else `false`.
+     *
+     * @static
+     * @memberOf _
+     * @category Collections
+     * @param {Array|Object|string} collection The collection to iterate over.
+     * @param {Function|Object|string} [callback=identity] The function called
+     *  per iteration. If a property name or object is provided it will be used
+     *  to create a "_.pluck" or "_.where" style callback, respectively.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {Object} Returns the composed aggregate object.
+     * @example
+     *
+     * var keys = [
+     *   { 'dir': 'left', 'code': 97 },
+     *   { 'dir': 'right', 'code': 100 }
+     * ];
+     *
+     * _.indexBy(keys, 'dir');
+     * // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } }
+     *
+     * _.indexBy(keys, function(key) { return String.fromCharCode(key.code); });
+     * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } }
+     *
+     * _.indexBy(stooges, function(key) { this.fromCharCode(key.code); }, String);
+     * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } }
+     */
+    var indexBy = createAggregator(function(result, value, key) {
+      result[key] = value;
+    });
+
+    /**
+     * Invokes the method named by `methodName` on each element in the `collection`
+     * returning an array of the results of each invoked method. Additional arguments
+     * will be provided to each invoked method. If `methodName` is a function it
+     * will be invoked for, and `this` bound to, each element in the `collection`.
+     *
+     * @static
+     * @memberOf _
+     * @category Collections
+     * @param {Array|Object|string} collection The collection to iterate over.
+     * @param {Function|string} methodName The name of the method to invoke or
+     *  the function invoked per iteration.
+     * @param {...*} [arg] Arguments to invoke the method with.
+     * @returns {Array} Returns a new array of the results of each invoked method.
+     * @example
+     *
+     * _.invoke([[5, 1, 7], [3, 2, 1]], 'sort');
+     * // => [[1, 5, 7], [1, 2, 3]]
+     *
+     * _.invoke([123, 456], String.prototype.split, '');
+     * // => [['1', '2', '3'], ['4', '5', '6']]
+     */
+    function invoke(collection, methodName) {
+      var args = nativeSlice.call(arguments, 2),
+          index = -1,
+          isFunc = typeof methodName == 'function',
+          length = collection ? collection.length : 0,
+          result = Array(typeof length == 'number' ? length : 0);
+
+      forEach(collection, function(value) {
+        result[++index] = (isFunc ? methodName : value[methodName]).apply(value, args);
+      });
+      return result;
+    }
+
+    /**
+     * Creates an array of values by running each element in the collection
+     * through the callback. The callback is bound to `thisArg` and invoked with
+     * three arguments; (value, index|key, collection).
+     *
+     * If a property name is provided for `callback` the created "_.pluck" style
+     * callback will return the property value of the given element.
+     *
+     * If an object is provided for `callback` the created "_.where" style callback
+     * will return `true` for elements that have the properties of the given object,
+     * else `false`.
+     *
+     * @static
+     * @memberOf _
+     * @alias collect
+     * @category Collections
+     * @param {Array|Object|string} collection The collection to iterate over.
+     * @param {Function|Object|string} [callback=identity] The function called
+     *  per iteration. If a property name or object is provided it will be used
+     *  to create a "_.pluck" or "_.where" style callback, respectively.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {Array} Returns a new array of the results of each `callback` execution.
+     * @example
+     *
+     * _.map([1, 2, 3], function(num) { return num * 3; });
+     * // => [3, 6, 9]
+     *
+     * _.map({ 'one': 1, 'two': 2, 'three': 3 }, function(num) { return num * 3; });
+     * // => [3, 6, 9] (property order is not guaranteed across environments)
+     *
+     * var stooges = [
+     *   { 'name': 'moe', 'age': 40 },
+     *   { 'name': 'larry', 'age': 50 }
+     * ];
+     *
+     * // using "_.pluck" callback shorthand
+     * _.map(stooges, 'name');
+     * // => ['moe', 'larry']
+     */
+    function map(collection, callback, thisArg) {
+      var index = -1,
+          length = collection ? collection.length : 0;
+
+      callback = lodash.createCallback(callback, thisArg, 3);
+      if (typeof length == 'number') {
+        var result = Array(length);
+        while (++index < length) {
+          result[index] = callback(collection[index], index, collection);
+        }
+      } else {
+        result = [];
+        forOwn(collection, function(value, key, collection) {
+          result[++index] = callback(value, key, collection);
+        });
+      }
+      return result;
+    }
+
+    /**
+     * Retrieves the maximum value of a collection. If the collection is empty or
+     * falsey `-Infinity` is returned. If a callback is provided it will be executed
+     * for each value in the collection to generate the criterion by which the value
+     * is ranked. The callback is bound to `thisArg` and invoked with three
+     * arguments; (value, index, collection).
+     *
+     * If a property name is provided for `callback` the created "_.pluck" style
+     * callback will return the property value of the given element.
+     *
+     * If an object is provided for `callback` the created "_.where" style callback
+     * will return `true` for elements that have the properties of the given object,
+     * else `false`.
+     *
+     * @static
+     * @memberOf _
+     * @category Collections
+     * @param {Array|Object|string} collection The collection to iterate over.
+     * @param {Function|Object|string} [callback=identity] The function called
+     *  per iteration. If a property name or object is provided it will be used
+     *  to create a "_.pluck" or "_.where" style callback, respectively.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {*} Returns the maximum value.
+     * @example
+     *
+     * _.max([4, 2, 8, 6]);
+     * // => 8
+     *
+     * var stooges = [
+     *   { 'name': 'moe', 'age': 40 },
+     *   { 'name': 'larry', 'age': 50 }
+     * ];
+     *
+     * _.max(stooges, function(stooge) { return stooge.age; });
+     * // => { 'name': 'larry', 'age': 50 };
+     *
+     * // using "_.pluck" callback shorthand
+     * _.max(stooges, 'age');
+     * // => { 'name': 'larry', 'age': 50 };
+     */
+    function max(collection, callback, thisArg) {
+      var computed = -Infinity,
+          result = computed;
+
+      if (!callback && isArray(collection)) {
+        var index = -1,
+            length = collection.length;
+
+        while (++index < length) {
+          var value = collection[index];
+          if (value > result) {
+            result = value;
+          }
+        }
+      } else {
+        callback = (!callback && isString(collection))
+          ? charAtCallback
+          : lodash.createCallback(callback, thisArg, 3);
+
+        forEach(collection, function(value, index, collection) {
+          var current = callback(value, index, collection);
+          if (current > computed) {
+            computed = current;
+            result = value;
+          }
+        });
+      }
+      return result;
+    }
+
+    /**
+     * Retrieves the minimum value of a collection. If the collection is empty or
+     * falsey `Infinity` is returned. If a callback is provided it will be executed
+     * for each value in the collection to generate the criterion by which the value
+     * is ranked. The callback is bound to `thisArg` and invoked with three
+     * arguments; (value, index, collection).
+     *
+     * If a property name is provided for `callback` the created "_.pluck" style
+     * callback will return the property value of the given element.
+     *
+     * If an object is provided for `callback` the created "_.where" style callback
+     * will return `true` for elements that have the properties of the given object,
+     * else `false`.
+     *
+     * @static
+     * @memberOf _
+     * @category Collections
+     * @param {Array|Object|string} collection The collection to iterate over.
+     * @param {Function|Object|string} [callback=identity] The function called
+     *  per iteration. If a property name or object is provided it will be used
+     *  to create a "_.pluck" or "_.where" style callback, respectively.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {*} Returns the minimum value.
+     * @example
+     *
+     * _.min([4, 2, 8, 6]);
+     * // => 2
+     *
+     * var stooges = [
+     *   { 'name': 'moe', 'age': 40 },
+     *   { 'name': 'larry', 'age': 50 }
+     * ];
+     *
+     * _.min(stooges, function(stooge) { return stooge.age; });
+     * // => { 'name': 'moe', 'age': 40 };
+     *
+     * // using "_.pluck" callback shorthand
+     * _.min(stooges, 'age');
+     * // => { 'name': 'moe', 'age': 40 };
+     */
+    function min(collection, callback, thisArg) {
+      var computed = Infinity,
+          result = computed;
+
+      if (!callback && isArray(collection)) {
+        var index = -1,
+            length = collection.length;
+
+        while (++index < length) {
+          var value = collection[index];
+          if (value < result) {
+            result = value;
+          }
+        }
+      } else {
+        callback = (!callback && isString(collection))
+          ? charAtCallback
+          : lodash.createCallback(callback, thisArg, 3);
+
+        forEach(collection, function(value, index, collection) {
+          var current = callback(value, index, collection);
+          if (current < computed) {
+            computed = current;
+            result = value;
+          }
+        });
+      }
+      return result;
+    }
+
+    /**
+     * Retrieves the value of a specified property from all elements in the `collection`.
+     *
+     * @static
+     * @memberOf _
+     * @type Function
+     * @category Collections
+     * @param {Array|Object|string} collection The collection to iterate over.
+     * @param {string} property The property to pluck.
+     * @returns {Array} Returns a new array of property values.
+     * @example
+     *
+     * var stooges = [
+     *   { 'name': 'moe', 'age': 40 },
+     *   { 'name': 'larry', 'age': 50 }
+     * ];
+     *
+     * _.pluck(stooges, 'name');
+     * // => ['moe', 'larry']
+     */
+    function pluck(collection, property) {
+      var index = -1,
+          length = collection ? collection.length : 0;
+
+      if (typeof length == 'number') {
+        var result = Array(length);
+        while (++index < length) {
+          result[index] = collection[index][property];
+        }
+      }
+      return result || map(collection, property);
+    }
+
+    /**
+     * Reduces a collection to a value which is the accumulated result of running
+     * each element in the collection through the callback, where each successive
+     * callback execution consumes the return value of the previous execution. If
+     * `accumulator` is not provided the first element of the collection will be
+     * used as the initial `accumulator` value. The callback is bound to `thisArg`
+     * and invoked with four arguments; (accumulator, value, index|key, collection).
+     *
+     * @static
+     * @memberOf _
+     * @alias foldl, inject
+     * @category Collections
+     * @param {Array|Object|string} collection The collection to iterate over.
+     * @param {Function} [callback=identity] The function called per iteration.
+     * @param {*} [accumulator] Initial value of the accumulator.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {*} Returns the accumulated value.
+     * @example
+     *
+     * var sum = _.reduce([1, 2, 3], function(sum, num) {
+     *   return sum + num;
+     * });
+     * // => 6
+     *
+     * var mapped = _.reduce({ 'a': 1, 'b': 2, 'c': 3 }, function(result, num, key) {
+     *   result[key] = num * 3;
+     *   return result;
+     * }, {});
+     * // => { 'a': 3, 'b': 6, 'c': 9 }
+     */
+    function reduce(collection, callback, accumulator, thisArg) {
+      if (!collection) return accumulator;
+      var noaccum = arguments.length < 3;
+      callback = baseCreateCallback(callback, thisArg, 4);
+
+      var index = -1,
+          length = collection.length;
+
+      if (typeof length == 'number') {
+        if (noaccum) {
+          accumulator = collection[++index];
+        }
+        while (++index < length) {
+          accumulator = callback(accumulator, collection[index], index, collection);
+        }
+      } else {
+        forOwn(collection, function(value, index, collection) {
+          accumulator = noaccum
+            ? (noaccum = false, value)
+            : callback(accumulator, value, index, collection)
+        });
+      }
+      return accumulator;
+    }
+
+    /**
+     * This method is like `_.reduce` except that it iterates over elements
+     * of a `collection` from right to left.
+     *
+     * @static
+     * @memberOf _
+     * @alias foldr
+     * @category Collections
+     * @param {Array|Object|string} collection The collection to iterate over.
+     * @param {Function} [callback=identity] The function called per iteration.
+     * @param {*} [accumulator] Initial value of the accumulator.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {*} Returns the accumulated value.
+     * @example
+     *
+     * var list = [[0, 1], [2, 3], [4, 5]];
+     * var flat = _.reduceRight(list, function(a, b) { return a.concat(b); }, []);
+     * // => [4, 5, 2, 3, 0, 1]
+     */
+    function reduceRight(collection, callback, accumulator, thisArg) {
+      var noaccum = arguments.length < 3;
+      callback = baseCreateCallback(callback, thisArg, 4);
+      forEachRight(collection, function(value, index, collection) {
+        accumulator = noaccum
+          ? (noaccum = false, value)
+          : callback(accumulator, value, index, collection);
+      });
+      return accumulator;
+    }
+
+    /**
+     * The opposite of `_.filter` this method returns the elements of a
+     * collection that the callback does **not** return truey for.
+     *
+     * If a property name is provided for `callback` the created "_.pluck" style
+     * callback will return the property value of the given element.
+     *
+     * If an object is provided for `callback` the created "_.where" style callback
+     * will return `true` for elements that have the properties of the given object,
+     * else `false`.
+     *
+     * @static
+     * @memberOf _
+     * @category Collections
+     * @param {Array|Object|string} collection The collection to iterate over.
+     * @param {Function|Object|string} [callback=identity] The function called
+     *  per iteration. If a property name or object is provided it will be used
+     *  to create a "_.pluck" or "_.where" style callback, respectively.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {Array} Returns a new array of elements that failed the callback check.
+     * @example
+     *
+     * var odds = _.reject([1, 2, 3, 4, 5, 6], function(num) { return num % 2 == 0; });
+     * // => [1, 3, 5]
+     *
+     * var food = [
+     *   { 'name': 'apple',  'organic': false, 'type': 'fruit' },
+     *   { 'name': 'carrot', 'organic': true,  'type': 'vegetable' }
+     * ];
+     *
+     * // using "_.pluck" callback shorthand
+     * _.reject(food, 'organic');
+     * // => [{ 'name': 'apple', 'organic': false, 'type': 'fruit' }]
+     *
+     * // using "_.where" callback shorthand
+     * _.reject(food, { 'type': 'fruit' });
+     * // => [{ 'name': 'carrot', 'organic': true, 'type': 'vegetable' }]
+     */
+    function reject(collection, callback, thisArg) {
+      callback = lodash.createCallback(callback, thisArg, 3);
+      return filter(collection, function(value, index, collection) {
+        return !callback(value, index, collection);
+      });
+    }
+
+    /**
+     * Retrieves a random element or `n` random elements from a collection.
+     *
+     * @static
+     * @memberOf _
+     * @category Collections
+     * @param {Array|Object|string} collection The collection to sample.
+     * @param {number} [n] The number of elements to sample.
+     * @param- {Object} [guard] Allows working with functions, like `_.map`,
+     *  without using their `key` and `object` arguments as sources.
+     * @returns {Array} Returns the random sample(s) of `collection`.
+     * @example
+     *
+     * _.sample([1, 2, 3, 4]);
+     * // => 2
+     *
+     * _.sample([1, 2, 3, 4], 2);
+     * // => [3, 1]
+     */
+    function sample(collection, n, guard) {
+      var length = collection ? collection.length : 0;
+      if (typeof length != 'number') {
+        collection = values(collection);
+      }
+      if (n == null || guard) {
+        return collection ? collection[random(length - 1)] : undefined;
+      }
+      var result = shuffle(collection);
+      result.length = nativeMin(nativeMax(0, n), result.length);
+      return result;
+    }
+
+    /**
+     * Creates an array of shuffled values, using a version of the Fisher-Yates
+     * shuffle. See http://en.wikipedia.org/wiki/Fisher-Yates_shuffle.
+     *
+     * @static
+     * @memberOf _
+     * @category Collections
+     * @param {Array|Object|string} collection The collection to shuffle.
+     * @returns {Array} Returns a new shuffled collection.
+     * @example
+     *
+     * _.shuffle([1, 2, 3, 4, 5, 6]);
+     * // => [4, 1, 6, 3, 5, 2]
+     */
+    function shuffle(collection) {
+      var index = -1,
+          length = collection ? collection.length : 0,
+          result = Array(typeof length == 'number' ? length : 0);
+
+      forEach(collection, function(value) {
+        var rand = random(++index);
+        result[index] = result[rand];
+        result[rand] = value;
+      });
+      return result;
+    }
+
+    /**
+     * Gets the size of the `collection` by returning `collection.length` for arrays
+     * and array-like objects or the number of own enumerable properties for objects.
+     *
+     * @static
+     * @memberOf _
+     * @category Collections
+     * @param {Array|Object|string} collection The collection to inspect.
+     * @returns {number} Returns `collection.length` or number of own enumerable properties.
+     * @example
+     *
+     * _.size([1, 2]);
+     * // => 2
+     *
+     * _.size({ 'one': 1, 'two': 2, 'three': 3 });
+     * // => 3
+     *
+     * _.size('curly');
+     * // => 5
+     */
+    function size(collection) {
+      var length = collection ? collection.length : 0;
+      return typeof length == 'number' ? length : keys(collection).length;
+    }
+
+    /**
+     * Checks if the callback returns a truey value for **any** element of a
+     * collection. The function returns as soon as it finds a passing value and
+     * does not iterate over the entire collection. The callback is bound to
+     * `thisArg` and invoked with three arguments; (value, index|key, collection).
+     *
+     * If a property name is provided for `callback` the created "_.pluck" style
+     * callback will return the property value of the given element.
+     *
+     * If an object is provided for `callback` the created "_.where" style callback
+     * will return `true` for elements that have the properties of the given object,
+     * else `false`.
+     *
+     * @static
+     * @memberOf _
+     * @alias any
+     * @category Collections
+     * @param {Array|Object|string} collection The collection to iterate over.
+     * @param {Function|Object|string} [callback=identity] The function called
+     *  per iteration. If a property name or object is provided it will be used
+     *  to create a "_.pluck" or "_.where" style callback, respectively.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {boolean} Returns `true` if any element passed the callback check,
+     *  else `false`.
+     * @example
+     *
+     * _.some([null, 0, 'yes', false], Boolean);
+     * // => true
+     *
+     * var food = [
+     *   { 'name': 'apple',  'organic': false, 'type': 'fruit' },
+     *   { 'name': 'carrot', 'organic': true,  'type': 'vegetable' }
+     * ];
+     *
+     * // using "_.pluck" callback shorthand
+     * _.some(food, 'organic');
+     * // => true
+     *
+     * // using "_.where" callback shorthand
+     * _.some(food, { 'type': 'meat' });
+     * // => false
+     */
+    function some(collection, callback, thisArg) {
+      var result;
+      callback = lodash.createCallback(callback, thisArg, 3);
+
+      var index = -1,
+          length = collection ? collection.length : 0;
+
+      if (typeof length == 'number') {
+        while (++index < length) {
+          if ((result = callback(collection[index], index, collection))) {
+            break;
+          }
+        }
+      } else {
+        forOwn(collection, function(value, index, collection) {
+          return !(result = callback(value, index, collection));
+        });
+      }
+      return !!result;
+    }
+
+    /**
+     * Creates an array of elements, sorted in ascending order by the results of
+     * running each element in a collection through the callback. This method
+     * performs a stable sort, that is, it will preserve the original sort order
+     * of equal elements. The callback is bound to `thisArg` and invoked with
+     * three arguments; (value, index|key, collection).
+     *
+     * If a property name is provided for `callback` the created "_.pluck" style
+     * callback will return the property value of the given element.
+     *
+     * If an object is provided for `callback` the created "_.where" style callback
+     * will return `true` for elements that have the properties of the given object,
+     * else `false`.
+     *
+     * @static
+     * @memberOf _
+     * @category Collections
+     * @param {Array|Object|string} collection The collection to iterate over.
+     * @param {Function|Object|string} [callback=identity] The function called
+     *  per iteration. If a property name or object is provided it will be used
+     *  to create a "_.pluck" or "_.where" style callback, respectively.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {Array} Returns a new array of sorted elements.
+     * @example
+     *
+     * _.sortBy([1, 2, 3], function(num) { return Math.sin(num); });
+     * // => [3, 1, 2]
+     *
+     * _.sortBy([1, 2, 3], function(num) { return this.sin(num); }, Math);
+     * // => [3, 1, 2]
+     *
+     * // using "_.pluck" callback shorthand
+     * _.sortBy(['banana', 'strawberry', 'apple'], 'length');
+     * // => ['apple', 'banana', 'strawberry']
+     */
+    function sortBy(collection, callback, thisArg) {
+      var index = -1,
+          length = collection ? collection.length : 0,
+          result = Array(typeof length == 'number' ? length : 0);
+
+      callback = lodash.createCallback(callback, thisArg, 3);
+      forEach(collection, function(value, key, collection) {
+        var object = result[++index] = getObject();
+        object.criteria = callback(value, key, collection);
+        object.index = index;
+        object.value = value;
+      });
+
+      length = result.length;
+      result.sort(compareAscending);
+      while (length--) {
+        var object = result[length];
+        result[length] = object.value;
+        releaseObject(object);
+      }
+      return result;
+    }
+
+    /**
+     * Converts the `collection` to an array.
+     *
+     * @static
+     * @memberOf _
+     * @category Collections
+     * @param {Array|Object|string} collection The collection to convert.
+     * @returns {Array} Returns the new converted array.
+     * @example
+     *
+     * (function() { return _.toArray(arguments).slice(1); })(1, 2, 3, 4);
+     * // => [2, 3, 4]
+     */
+    function toArray(collection) {
+      if (collection && typeof collection.length == 'number') {
+        return slice(collection);
+      }
+      return values(collection);
+    }
+
+    /**
+     * Performs a deep comparison of each element in a `collection` to the given
+     * `properties` object, returning an array of all elements that have equivalent
+     * property values.
+     *
+     * @static
+     * @memberOf _
+     * @type Function
+     * @category Collections
+     * @param {Array|Object|string} collection The collection to iterate over.
+     * @param {Object} properties The object of property values to filter by.
+     * @returns {Array} Returns a new array of elements that have the given properties.
+     * @example
+     *
+     * var stooges = [
+     *   { 'name': 'curly', 'age': 30, 'quotes': ['Oh, a wise guy, eh?', 'Poifect!'] },
+     *   { 'name': 'moe', 'age': 40, 'quotes': ['Spread out!', 'You knucklehead!'] }
+     * ];
+     *
+     * _.where(stooges, { 'age': 40 });
+     * // => [{ 'name': 'moe', 'age': 40, 'quotes': ['Spread out!', 'You knucklehead!'] }]
+     *
+     * _.where(stooges, { 'quotes': ['Poifect!'] });
+     * // => [{ 'name': 'curly', 'age': 30, 'quotes': ['Oh, a wise guy, eh?', 'Poifect!'] }]
+     */
+    var where = filter;
+
+    /*--------------------------------------------------------------------------*/
+
+    /**
+     * Creates an array with all falsey values removed. The values `false`, `null`,
+     * `0`, `""`, `undefined`, and `NaN` are all falsey.
+     *
+     * @static
+     * @memberOf _
+     * @category Arrays
+     * @param {Array} array The array to compact.
+     * @returns {Array} Returns a new array of filtered values.
+     * @example
+     *
+     * _.compact([0, 1, false, 2, '', 3]);
+     * // => [1, 2, 3]
+     */
+    function compact(array) {
+      var index = -1,
+          length = array ? array.length : 0,
+          result = [];
+
+      while (++index < length) {
+        var value = array[index];
+        if (value) {
+          result.push(value);
+        }
+      }
+      return result;
+    }
+
+    /**
+     * Creates an array excluding all values of the provided arrays using strict
+     * equality for comparisons, i.e. `===`.
+     *
+     * @static
+     * @memberOf _
+     * @category Arrays
+     * @param {Array} array The array to process.
+     * @param {...Array} [array] The arrays of values to exclude.
+     * @returns {Array} Returns a new array of filtered values.
+     * @example
+     *
+     * _.difference([1, 2, 3, 4, 5], [5, 2, 10]);
+     * // => [1, 3, 4]
+     */
+    function difference(array) {
+      var index = -1,
+          indexOf = getIndexOf(),
+          length = array ? array.length : 0,
+          seen = baseFlatten(arguments, true, true, 1),
+          result = [];
+
+      var isLarge = length >= largeArraySize && indexOf === baseIndexOf;
+
+      if (isLarge) {
+        var cache = createCache(seen);
+        if (cache) {
+          indexOf = cacheIndexOf;
+          seen = cache;
+        } else {
+          isLarge = false;
+        }
+      }
+      while (++index < length) {
+        var value = array[index];
+        if (indexOf(seen, value) < 0) {
+          result.push(value);
+        }
+      }
+      if (isLarge) {
+        releaseObject(seen);
+      }
+      return result;
+    }
+
+    /**
+     * This method is like `_.find` except that it returns the index of the first
+     * element that passes the callback check, instead of the element itself.
+     *
+     * @static
+     * @memberOf _
+     * @category Arrays
+     * @param {Array} array The array to search.
+     * @param {Function|Object|string} [callback=identity] The function called
+     *  per iteration. If a property name or object is provided it will be used
+     *  to create a "_.pluck" or "_.where" style callback, respectively.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {number} Returns the index of the found element, else `-1`.
+     * @example
+     *
+     * _.findIndex(['apple', 'banana', 'beet'], function(food) {
+     *   return /^b/.test(food);
+     * });
+     * // => 1
+     */
+    function findIndex(array, callback, thisArg) {
+      var index = -1,
+          length = array ? array.length : 0;
+
+      callback = lodash.createCallback(callback, thisArg, 3);
+      while (++index < length) {
+        if (callback(array[index], index, array)) {
+          return index;
+        }
+      }
+      return -1;
+    }
+
+    /**
+     * This method is like `_.findIndex` except that it iterates over elements
+     * of a `collection` from right to left.
+     *
+     * @static
+     * @memberOf _
+     * @category Arrays
+     * @param {Array} array The array to search.
+     * @param {Function|Object|string} [callback=identity] The function called
+     *  per iteration. If a property name or object is provided it will be used
+     *  to create a "_.pluck" or "_.where" style callback, respectively.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {number} Returns the index of the found element, else `-1`.
+     * @example
+     *
+     * _.findLastIndex(['apple', 'banana', 'beet'], function(food) {
+     *   return /^b/.test(food);
+     * });
+     * // => 2
+     */
+    function findLastIndex(array, callback, thisArg) {
+      var length = array ? array.length : 0;
+      callback = lodash.createCallback(callback, thisArg, 3);
+      while (length--) {
+        if (callback(array[length], length, array)) {
+          return length;
+        }
+      }
+      return -1;
+    }
+
+    /**
+     * Gets the first element or first `n` elements of an array. If a callback
+     * is provided elements at the beginning of the array are returned as long
+     * as the callback returns truey. The callback is bound to `thisArg` and
+     * invoked with three arguments; (value, index, array).
+     *
+     * If a property name is provided for `callback` the created "_.pluck" style
+     * callback will return the property value of the given element.
+     *
+     * If an object is provided for `callback` the created "_.where" style callback
+     * will return `true` for elements that have the properties of the given object,
+     * else `false`.
+     *
+     * @static
+     * @memberOf _
+     * @alias head, take
+     * @category Arrays
+     * @param {Array} array The array to query.
+     * @param {Function|Object|number|string} [callback] The function called
+     *  per element or the number of elements to return. If a property name or
+     *  object is provided it will be used to create a "_.pluck" or "_.where"
+     *  style callback, respectively.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {*} Returns the first element(s) of `array`.
+     * @example
+     *
+     * _.first([1, 2, 3]);
+     * // => 1
+     *
+     * _.first([1, 2, 3], 2);
+     * // => [1, 2]
+     *
+     * _.first([1, 2, 3], function(num) {
+     *   return num < 3;
+     * });
+     * // => [1, 2]
+     *
+     * var food = [
+     *   { 'name': 'banana', 'organic': true },
+     *   { 'name': 'beet',   'organic': false },
+     * ];
+     *
+     * // using "_.pluck" callback shorthand
+     * _.first(food, 'organic');
+     * // => [{ 'name': 'banana', 'organic': true }]
+     *
+     * var food = [
+     *   { 'name': 'apple',  'type': 'fruit' },
+     *   { 'name': 'banana', 'type': 'fruit' },
+     *   { 'name': 'beet',   'type': 'vegetable' }
+     * ];
+     *
+     * // using "_.where" callback shorthand
+     * _.first(food, { 'type': 'fruit' });
+     * // => [{ 'name': 'apple', 'type': 'fruit' }, { 'name': 'banana', 'type': 'fruit' }]
+     */
+    function first(array, callback, thisArg) {
+      var n = 0,
+          length = array ? array.length : 0;
+
+      if (typeof callback != 'number' && callback != null) {
+        var index = -1;
+        callback = lodash.createCallback(callback, thisArg, 3);
+        while (++index < length && callback(array[index], index, array)) {
+          n++;
+        }
+      } else {
+        n = callback;
+        if (n == null || thisArg) {
+          return array ? array[0] : undefined;
+        }
+      }
+      return slice(array, 0, nativeMin(nativeMax(0, n), length));
+    }
+
+    /**
+     * Flattens a nested array (the nesting can be to any depth). If `isShallow`
+     * is truey, the array will only be flattened a single level. If a callback
+     * is provided each element of the array is passed through the callback before
+     * flattening. The callback is bound to `thisArg` and invoked with three
+     * arguments; (value, index, array).
+     *
+     * If a property name is provided for `callback` the created "_.pluck" style
+     * callback will return the property value of the given element.
+     *
+     * If an object is provided for `callback` the created "_.where" style callback
+     * will return `true` for elements that have the properties of the given object,
+     * else `false`.
+     *
+     * @static
+     * @memberOf _
+     * @category Arrays
+     * @param {Array} array The array to flatten.
+     * @param {boolean} [isShallow=false] A flag to restrict flattening to a single level.
+     * @param {Function|Object|string} [callback=identity] The function called
+     *  per iteration. If a property name or object is provided it will be used
+     *  to create a "_.pluck" or "_.where" style callback, respectively.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {Array} Returns a new flattened array.
+     * @example
+     *
+     * _.flatten([1, [2], [3, [[4]]]]);
+     * // => [1, 2, 3, 4];
+     *
+     * _.flatten([1, [2], [3, [[4]]]], true);
+     * // => [1, 2, 3, [[4]]];
+     *
+     * var stooges = [
+     *   { 'name': 'curly', 'quotes': ['Oh, a wise guy, eh?', 'Poifect!'] },
+     *   { 'name': 'moe', 'quotes': ['Spread out!', 'You knucklehead!'] }
+     * ];
+     *
+     * // using "_.pluck" callback shorthand
+     * _.flatten(stooges, 'quotes');
+     * // => ['Oh, a wise guy, eh?', 'Poifect!', 'Spread out!', 'You knucklehead!']
+     */
+    function flatten(array, isShallow, callback, thisArg) {
+      // juggle arguments
+      if (typeof isShallow != 'boolean' && isShallow != null) {
+        thisArg = callback;
+        callback = !(thisArg && thisArg[isShallow] === array) ? isShallow : null;
+        isShallow = false;
+      }
+      if (callback != null) {
+        array = map(array, callback, thisArg);
+      }
+      return baseFlatten(array, isShallow);
+    }
+
+    /**
+     * Gets the index at which the first occurrence of `value` is found using
+     * strict equality for comparisons, i.e. `===`. If the array is already sorted
+     * providing `true` for `fromIndex` will run a faster binary search.
+     *
+     * @static
+     * @memberOf _
+     * @category Arrays
+     * @param {Array} array The array to search.
+     * @param {*} value The value to search for.
+     * @param {boolean|number} [fromIndex=0] The index to search from or `true`
+     *  to perform a binary search on a sorted array.
+     * @returns {number} Returns the index of the matched value or `-1`.
+     * @example
+     *
+     * _.indexOf([1, 2, 3, 1, 2, 3], 2);
+     * // => 1
+     *
+     * _.indexOf([1, 2, 3, 1, 2, 3], 2, 3);
+     * // => 4
+     *
+     * _.indexOf([1, 1, 2, 2, 3, 3], 2, true);
+     * // => 2
+     */
+    function indexOf(array, value, fromIndex) {
+      if (typeof fromIndex == 'number') {
+        var length = array ? array.length : 0;
+        fromIndex = (fromIndex < 0 ? nativeMax(0, length + fromIndex) : fromIndex || 0);
+      } else if (fromIndex) {
+        var index = sortedIndex(array, value);
+        return array[index] === value ? index : -1;
+      }
+      return baseIndexOf(array, value, fromIndex);
+    }
+
+    /**
+     * Gets all but the last element or last `n` elements of an array. If a
+     * callback is provided elements at the end of the array are excluded from
+     * the result as long as the callback returns truey. The callback is bound
+     * to `thisArg` and invoked with three arguments; (value, index, array).
+     *
+     * If a property name is provided for `callback` the created "_.pluck" style
+     * callback will return the property value of the given element.
+     *
+     * If an object is provided for `callback` the created "_.where" style callback
+     * will return `true` for elements that have the properties of the given object,
+     * else `false`.
+     *
+     * @static
+     * @memberOf _
+     * @category Arrays
+     * @param {Array} array The array to query.
+     * @param {Function|Object|number|string} [callback=1] The function called
+     *  per element or the number of elements to exclude. If a property name or
+     *  object is provided it will be used to create a "_.pluck" or "_.where"
+     *  style callback, respectively.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {Array} Returns a slice of `array`.
+     * @example
+     *
+     * _.initial([1, 2, 3]);
+     * // => [1, 2]
+     *
+     * _.initial([1, 2, 3], 2);
+     * // => [1]
+     *
+     * _.initial([1, 2, 3], function(num) {
+     *   return num > 1;
+     * });
+     * // => [1]
+     *
+     * var food = [
+     *   { 'name': 'beet',   'organic': false },
+     *   { 'name': 'carrot', 'organic': true }
+     * ];
+     *
+     * // using "_.pluck" callback shorthand
+     * _.initial(food, 'organic');
+     * // => [{ 'name': 'beet',   'organic': false }]
+     *
+     * var food = [
+     *   { 'name': 'banana', 'type': 'fruit' },
+     *   { 'name': 'beet',   'type': 'vegetable' },
+     *   { 'name': 'carrot', 'type': 'vegetable' }
+     * ];
+     *
+     * // using "_.where" callback shorthand
+     * _.initial(food, { 'type': 'vegetable' });
+     * // => [{ 'name': 'banana', 'type': 'fruit' }]
+     */
+    function initial(array, callback, thisArg) {
+      var n = 0,
+          length = array ? array.length : 0;
+
+      if (typeof callback != 'number' && callback != null) {
+        var index = length;
+        callback = lodash.createCallback(callback, thisArg, 3);
+        while (index-- && callback(array[index], index, array)) {
+          n++;
+        }
+      } else {
+        n = (callback == null || thisArg) ? 1 : callback || n;
+      }
+      return slice(array, 0, nativeMin(nativeMax(0, length - n), length));
+    }
+
+    /**
+     * Creates an array of unique values present in all provided arrays using
+     * strict equality for comparisons, i.e. `===`.
+     *
+     * @static
+     * @memberOf _
+     * @category Arrays
+     * @param {...Array} [array] The arrays to inspect.
+     * @returns {Array} Returns an array of composite values.
+     * @example
+     *
+     * _.intersection([1, 2, 3], [101, 2, 1, 10], [2, 1]);
+     * // => [1, 2]
+     */
+    function intersection(array) {
+      var args = arguments,
+          argsLength = args.length,
+          argsIndex = -1,
+          caches = getArray(),
+          index = -1,
+          indexOf = getIndexOf(),
+          length = array ? array.length : 0,
+          result = [],
+          seen = getArray();
+
+      while (++argsIndex < argsLength) {
+        var value = args[argsIndex];
+        caches[argsIndex] = indexOf === baseIndexOf &&
+          (value ? value.length : 0) >= largeArraySize &&
+          createCache(argsIndex ? args[argsIndex] : seen);
+      }
+      outer:
+      while (++index < length) {
+        var cache = caches[0];
+        value = array[index];
+
+        if ((cache ? cacheIndexOf(cache, value) : indexOf(seen, value)) < 0) {
+          argsIndex = argsLength;
+          (cache || seen).push(value);
+          while (--argsIndex) {
+            cache = caches[argsIndex];
+            if ((cache ? cacheIndexOf(cache, value) : indexOf(args[argsIndex], value)) < 0) {
+              continue outer;
+            }
+          }
+          result.push(value);
+        }
+      }
+      while (argsLength--) {
+        cache = caches[argsLength];
+        if (cache) {
+          releaseObject(cache);
+        }
+      }
+      releaseArray(caches);
+      releaseArray(seen);
+      return result;
+    }
+
+    /**
+     * Gets the last element or last `n` elements of an array. If a callback is
+     * provided elements at the end of the array are returned as long as the
+     * callback returns truey. The callback is bound to `thisArg` and invoked
+     * with three arguments; (value, index, array).
+     *
+     * If a property name is provided for `callback` the created "_.pluck" style
+     * callback will return the property value of the given element.
+     *
+     * If an object is provided for `callback` the created "_.where" style callback
+     * will return `true` for elements that have the properties of the given object,
+     * else `false`.
+     *
+     * @static
+     * @memberOf _
+     * @category Arrays
+     * @param {Array} array The array to query.
+     * @param {Function|Object|number|string} [callback] The function called
+     *  per element or the number of elements to return. If a property name or
+     *  object is provided it will be used to create a "_.pluck" or "_.where"
+     *  style callback, respectively.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {*} Returns the last element(s) of `array`.
+     * @example
+     *
+     * _.last([1, 2, 3]);
+     * // => 3
+     *
+     * _.last([1, 2, 3], 2);
+     * // => [2, 3]
+     *
+     * _.last([1, 2, 3], function(num) {
+     *   return num > 1;
+     * });
+     * // => [2, 3]
+     *
+     * var food = [
+     *   { 'name': 'beet',   'organic': false },
+     *   { 'name': 'carrot', 'organic': true }
+     * ];
+     *
+     * // using "_.pluck" callback shorthand
+     * _.last(food, 'organic');
+     * // => [{ 'name': 'carrot', 'organic': true }]
+     *
+     * var food = [
+     *   { 'name': 'banana', 'type': 'fruit' },
+     *   { 'name': 'beet',   'type': 'vegetable' },
+     *   { 'name': 'carrot', 'type': 'vegetable' }
+     * ];
+     *
+     * // using "_.where" callback shorthand
+     * _.last(food, { 'type': 'vegetable' });
+     * // => [{ 'name': 'beet', 'type': 'vegetable' }, { 'name': 'carrot', 'type': 'vegetable' }]
+     */
+    function last(array, callback, thisArg) {
+      var n = 0,
+          length = array ? array.length : 0;
+
+      if (typeof callback != 'number' && callback != null) {
+        var index = length;
+        callback = lodash.createCallback(callback, thisArg, 3);
+        while (index-- && callback(array[index], index, array)) {
+          n++;
+        }
+      } else {
+        n = callback;
+        if (n == null || thisArg) {
+          return array ? array[length - 1] : undefined;
+        }
+      }
+      return slice(array, nativeMax(0, length - n));
+    }
+
+    /**
+     * Gets the index at which the last occurrence of `value` is found using strict
+     * equality for comparisons, i.e. `===`. If `fromIndex` is negative, it is used
+     * as the offset from the end of the collection.
+     *
+     * @static
+     * @memberOf _
+     * @category Arrays
+     * @param {Array} array The array to search.
+     * @param {*} value The value to search for.
+     * @param {number} [fromIndex=array.length-1] The index to search from.
+     * @returns {number} Returns the index of the matched value or `-1`.
+     * @example
+     *
+     * _.lastIndexOf([1, 2, 3, 1, 2, 3], 2);
+     * // => 4
+     *
+     * _.lastIndexOf([1, 2, 3, 1, 2, 3], 2, 3);
+     * // => 1
+     */
+    function lastIndexOf(array, value, fromIndex) {
+      var index = array ? array.length : 0;
+      if (typeof fromIndex == 'number') {
+        index = (fromIndex < 0 ? nativeMax(0, index + fromIndex) : nativeMin(fromIndex, index - 1)) + 1;
+      }
+      while (index--) {
+        if (array[index] === value) {
+          return index;
+        }
+      }
+      return -1;
+    }
+
+    /**
+     * Removes all provided values from the given array using strict equality for
+     * comparisons, i.e. `===`.
+     *
+     * @static
+     * @memberOf _
+     * @category Arrays
+     * @param {Array} array The array to modify.
+     * @param {...*} [value] The values to remove.
+     * @returns {Array} Returns `array`.
+     * @example
+     *
+     * var array = [1, 2, 3, 1, 2, 3];
+     * _.pull(array, 2, 3);
+     * console.log(array);
+     * // => [1, 1]
+     */
+    function pull(array) {
+      var args = arguments,
+          argsIndex = 0,
+          argsLength = args.length,
+          length = array ? array.length : 0;
+
+      while (++argsIndex < argsLength) {
+        var index = -1,
+            value = args[argsIndex];
+        while (++index < length) {
+          if (array[index] === value) {
+            splice.call(array, index--, 1);
+            length--;
+          }
+        }
+      }
+      return array;
+    }
+
+    /**
+     * Creates an array of numbers (positive and/or negative) progressing from
+     * `start` up to but not including `end`. If `start` is less than `stop` a
+     * zero-length range is created unless a negative `step` is specified.
+     *
+     * @static
+     * @memberOf _
+     * @category Arrays
+     * @param {number} [start=0] The start of the range.
+     * @param {number} end The end of the range.
+     * @param {number} [step=1] The value to increment or decrement by.
+     * @returns {Array} Returns a new range array.
+     * @example
+     *
+     * _.range(10);
+     * // => [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
+     *
+     * _.range(1, 11);
+     * // => [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
+     *
+     * _.range(0, 30, 5);
+     * // => [0, 5, 10, 15, 20, 25]
+     *
+     * _.range(0, -10, -1);
+     * // => [0, -1, -2, -3, -4, -5, -6, -7, -8, -9]
+     *
+     * _.range(1, 4, 0);
+     * // => [1, 1, 1]
+     *
+     * _.range(0);
+     * // => []
+     */
+    function range(start, end, step) {
+      start = +start || 0;
+      step = typeof step == 'number' ? step : (+step || 1);
+
+      if (end == null) {
+        end = start;
+        start = 0;
+      }
+      // use `Array(length)` so engines, like Chakra and V8, avoid slower modes
+      // http://youtu.be/XAqIpGU8ZZk#t=17m25s
+      var index = -1,
+          length = nativeMax(0, ceil((end - start) / (step || 1))),
+          result = Array(length);
+
+      while (++index < length) {
+        result[index] = start;
+        start += step;
+      }
+      return result;
+    }
+
+    /**
+     * Removes all elements from an array that the callback returns truey for
+     * and returns an array of removed elements. The callback is bound to `thisArg`
+     * and invoked with three arguments; (value, index, array).
+     *
+     * If a property name is provided for `callback` the created "_.pluck" style
+     * callback will return the property value of the given element.
+     *
+     * If an object is provided for `callback` the created "_.where" style callback
+     * will return `true` for elements that have the properties of the given object,
+     * else `false`.
+     *
+     * @static
+     * @memberOf _
+     * @category Arrays
+     * @param {Array} array The array to modify.
+     * @param {Function|Object|string} [callback=identity] The function called
+     *  per iteration. If a property name or object is provided it will be used
+     *  to create a "_.pluck" or "_.where" style callback, respectively.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {Array} Returns a new array of removed elements.
+     * @example
+     *
+     * var array = [1, 2, 3, 4, 5, 6];
+     * var evens = _.remove(array, function(num) { return num % 2 == 0; });
+     *
+     * console.log(array);
+     * // => [1, 3, 5]
+     *
+     * console.log(evens);
+     * // => [2, 4, 6]
+     */
+    function remove(array, callback, thisArg) {
+      var index = -1,
+          length = array ? array.length : 0,
+          result = [];
+
+      callback = lodash.createCallback(callback, thisArg, 3);
+      while (++index < length) {
+        var value = array[index];
+        if (callback(value, index, array)) {
+          result.push(value);
+          splice.call(array, index--, 1);
+          length--;
+        }
+      }
+      return result;
+    }
+
+    /**
+     * The opposite of `_.initial` this method gets all but the first element or
+     * first `n` elements of an array. If a callback function is provided elements
+     * at the beginning of the array are excluded from the result as long as the
+     * callback returns truey. The callback is bound to `thisArg` and invoked
+     * with three arguments; (value, index, array).
+     *
+     * If a property name is provided for `callback` the created "_.pluck" style
+     * callback will return the property value of the given element.
+     *
+     * If an object is provided for `callback` the created "_.where" style callback
+     * will return `true` for elements that have the properties of the given object,
+     * else `false`.
+     *
+     * @static
+     * @memberOf _
+     * @alias drop, tail
+     * @category Arrays
+     * @param {Array} array The array to query.
+     * @param {Function|Object|number|string} [callback=1] The function called
+     *  per element or the number of elements to exclude. If a property name or
+     *  object is provided it will be used to create a "_.pluck" or "_.where"
+     *  style callback, respectively.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {Array} Returns a slice of `array`.
+     * @example
+     *
+     * _.rest([1, 2, 3]);
+     * // => [2, 3]
+     *
+     * _.rest([1, 2, 3], 2);
+     * // => [3]
+     *
+     * _.rest([1, 2, 3], function(num) {
+     *   return num < 3;
+     * });
+     * // => [3]
+     *
+     * var food = [
+     *   { 'name': 'banana', 'organic': true },
+     *   { 'name': 'beet',   'organic': false },
+     * ];
+     *
+     * // using "_.pluck" callback shorthand
+     * _.rest(food, 'organic');
+     * // => [{ 'name': 'beet', 'organic': false }]
+     *
+     * var food = [
+     *   { 'name': 'apple',  'type': 'fruit' },
+     *   { 'name': 'banana', 'type': 'fruit' },
+     *   { 'name': 'beet',   'type': 'vegetable' }
+     * ];
+     *
+     * // using "_.where" callback shorthand
+     * _.rest(food, { 'type': 'fruit' });
+     * // => [{ 'name': 'beet', 'type': 'vegetable' }]
+     */
+    function rest(array, callback, thisArg) {
+      if (typeof callback != 'number' && callback != null) {
+        var n = 0,
+            index = -1,
+            length = array ? array.length : 0;
+
+        callback = lodash.createCallback(callback, thisArg, 3);
+        while (++index < length && callback(array[index], index, array)) {
+          n++;
+        }
+      } else {
+        n = (callback == null || thisArg) ? 1 : nativeMax(0, callback);
+      }
+      return slice(array, n);
+    }
+
+    /**
+     * Uses a binary search to determine the smallest index at which a value
+     * should be inserted into a given sorted array in order to maintain the sort
+     * order of the array. If a callback is provided it will be executed for
+     * `value` and each element of `array` to compute their sort ranking. The
+     * callback is bound to `thisArg` and invoked with one argument; (value).
+     *
+     * If a property name is provided for `callback` the created "_.pluck" style
+     * callback will return the property value of the given element.
+     *
+     * If an object is provided for `callback` the created "_.where" style callback
+     * will return `true` for elements that have the properties of the given object,
+     * else `false`.
+     *
+     * @static
+     * @memberOf _
+     * @category Arrays
+     * @param {Array} array The array to inspect.
+     * @param {*} value The value to evaluate.
+     * @param {Function|Object|string} [callback=identity] The function called
+     *  per iteration. If a property name or object is provided it will be used
+     *  to create a "_.pluck" or "_.where" style callback, respectively.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {number} Returns the index at which `value` should be inserted
+     *  into `array`.
+     * @example
+     *
+     * _.sortedIndex([20, 30, 50], 40);
+     * // => 2
+     *
+     * // using "_.pluck" callback shorthand
+     * _.sortedIndex([{ 'x': 20 }, { 'x': 30 }, { 'x': 50 }], { 'x': 40 }, 'x');
+     * // => 2
+     *
+     * var dict = {
+     *   'wordToNumber': { 'twenty': 20, 'thirty': 30, 'fourty': 40, 'fifty': 50 }
+     * };
+     *
+     * _.sortedIndex(['twenty', 'thirty', 'fifty'], 'fourty', function(word) {
+     *   return dict.wordToNumber[word];
+     * });
+     * // => 2
+     *
+     * _.sortedIndex(['twenty', 'thirty', 'fifty'], 'fourty', function(word) {
+     *   return this.wordToNumber[word];
+     * }, dict);
+     * // => 2
+     */
+    function sortedIndex(array, value, callback, thisArg) {
+      var low = 0,
+          high = array ? array.length : low;
+
+      // explicitly reference `identity` for better inlining in Firefox
+      callback = callback ? lodash.createCallback(callback, thisArg, 1) : identity;
+      value = callback(value);
+
+      while (low < high) {
+        var mid = (low + high) >>> 1;
+        (callback(array[mid]) < value)
+          ? low = mid + 1
+          : high = mid;
+      }
+      return low;
+    }
+
+    /**
+     * Creates an array of unique values, in order, of the provided arrays using
+     * strict equality for comparisons, i.e. `===`.
+     *
+     * @static
+     * @memberOf _
+     * @category Arrays
+     * @param {...Array} [array] The arrays to inspect.
+     * @returns {Array} Returns an array of composite values.
+     * @example
+     *
+     * _.union([1, 2, 3], [101, 2, 1, 10], [2, 1]);
+     * // => [1, 2, 3, 101, 10]
+     */
+    function union(array) {
+      return baseUniq(baseFlatten(arguments, true, true));
+    }
+
+    /**
+     * Creates a duplicate-value-free version of an array using strict equality
+     * for comparisons, i.e. `===`. If the array is sorted, providing
+     * `true` for `isSorted` will use a faster algorithm. If a callback is provided
+     * each element of `array` is passed through the callback before uniqueness
+     * is computed. The callback is bound to `thisArg` and invoked with three
+     * arguments; (value, index, array).
+     *
+     * If a property name is provided for `callback` the created "_.pluck" style
+     * callback will return the property value of the given element.
+     *
+     * If an object is provided for `callback` the created "_.where" style callback
+     * will return `true` for elements that have the properties of the given object,
+     * else `false`.
+     *
+     * @static
+     * @memberOf _
+     * @alias unique
+     * @category Arrays
+     * @param {Array} array The array to process.
+     * @param {boolean} [isSorted=false] A flag to indicate that `array` is sorted.
+     * @param {Function|Object|string} [callback=identity] The function called
+     *  per iteration. If a property name or object is provided it will be used
+     *  to create a "_.pluck" or "_.where" style callback, respectively.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {Array} Returns a duplicate-value-free array.
+     * @example
+     *
+     * _.uniq([1, 2, 1, 3, 1]);
+     * // => [1, 2, 3]
+     *
+     * _.uniq([1, 1, 2, 2, 3], true);
+     * // => [1, 2, 3]
+     *
+     * _.uniq(['A', 'b', 'C', 'a', 'B', 'c'], function(letter) { return letter.toLowerCase(); });
+     * // => ['A', 'b', 'C']
+     *
+     * _.uniq([1, 2.5, 3, 1.5, 2, 3.5], function(num) { return this.floor(num); }, Math);
+     * // => [1, 2.5, 3]
+     *
+     * // using "_.pluck" callback shorthand
+     * _.uniq([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');
+     * // => [{ 'x': 1 }, { 'x': 2 }]
+     */
+    function uniq(array, isSorted, callback, thisArg) {
+      // juggle arguments
+      if (typeof isSorted != 'boolean' && isSorted != null) {
+        thisArg = callback;
+        callback = !(thisArg && thisArg[isSorted] === array) ? isSorted : null;
+        isSorted = false;
+      }
+      if (callback != null) {
+        callback = lodash.createCallback(callback, thisArg, 3);
+      }
+      return baseUniq(array, isSorted, callback);
+    }
+
+    /**
+     * Creates an array excluding all provided values using strict equality for
+     * comparisons, i.e. `===`.
+     *
+     * @static
+     * @memberOf _
+     * @category Arrays
+     * @param {Array} array The array to filter.
+     * @param {...*} [value] The values to exclude.
+     * @returns {Array} Returns a new array of filtered values.
+     * @example
+     *
+     * _.without([1, 2, 1, 0, 3, 1, 4], 0, 1);
+     * // => [2, 3, 4]
+     */
+    function without(array) {
+      return difference(array, nativeSlice.call(arguments, 1));
+    }
+
+    /**
+     * Creates an array of grouped elements, the first of which contains the first
+     * elements of the given arrays, the second of which contains the second
+     * elements of the given arrays, and so on.
+     *
+     * @static
+     * @memberOf _
+     * @alias unzip
+     * @category Arrays
+     * @param {...Array} [array] Arrays to process.
+     * @returns {Array} Returns a new array of grouped elements.
+     * @example
+     *
+     * _.zip(['moe', 'larry'], [30, 40], [true, false]);
+     * // => [['moe', 30, true], ['larry', 40, false]]
+     */
+    function zip() {
+      var array = arguments.length > 1 ? arguments : arguments[0],
+          index = -1,
+          length = array ? max(pluck(array, 'length')) : 0,
+          result = Array(length < 0 ? 0 : length);
+
+      while (++index < length) {
+        result[index] = pluck(array, index);
+      }
+      return result;
+    }
+
+    /**
+     * Creates an object composed from arrays of `keys` and `values`. Provide
+     * either a single two dimensional array, i.e. `[[key1, value1], [key2, value2]]`
+     * or two arrays, one of `keys` and one of corresponding `values`.
+     *
+     * @static
+     * @memberOf _
+     * @alias object
+     * @category Arrays
+     * @param {Array} keys The array of keys.
+     * @param {Array} [values=[]] The array of values.
+     * @returns {Object} Returns an object composed of the given keys and
+     *  corresponding values.
+     * @example
+     *
+     * _.zipObject(['moe', 'larry'], [30, 40]);
+     * // => { 'moe': 30, 'larry': 40 }
+     */
+    function zipObject(keys, values) {
+      var index = -1,
+          length = keys ? keys.length : 0,
+          result = {};
+
+      while (++index < length) {
+        var key = keys[index];
+        if (values) {
+          result[key] = values[index];
+        } else if (key) {
+          result[key[0]] = key[1];
+        }
+      }
+      return result;
+    }
+
+    /*--------------------------------------------------------------------------*/
+
+    /**
+     * Creates a function that executes `func`, with  the `this` binding and
+     * arguments of the created function, only after being called `n` times.
+     *
+     * @static
+     * @memberOf _
+     * @category Functions
+     * @param {number} n The number of times the function must be called before
+     *  `func` is executed.
+     * @param {Function} func The function to restrict.
+     * @returns {Function} Returns the new restricted function.
+     * @example
+     *
+     * var saves = ['profile', 'settings'];
+     *
+     * var done = _.after(saves.length, function() {
+     *   console.log('Done saving!');
+     * });
+     *
+     * _.forEach(saves, function(type) {
+     *   asyncSave({ 'type': type, 'complete': done });
+     * });
+     * // => logs 'Done saving!', after all saves have completed
+     */
+    function after(n, func) {
+      if (!isFunction(func)) {
+        throw new TypeError;
+      }
+      return function() {
+        if (--n < 1) {
+          return func.apply(this, arguments);
+        }
+      };
+    }
+
+    /**
+     * Creates a function that, when called, invokes `func` with the `this`
+     * binding of `thisArg` and prepends any additional `bind` arguments to those
+     * provided to the bound function.
+     *
+     * @static
+     * @memberOf _
+     * @category Functions
+     * @param {Function} func The function to bind.
+     * @param {*} [thisArg] The `this` binding of `func`.
+     * @param {...*} [arg] Arguments to be partially applied.
+     * @returns {Function} Returns the new bound function.
+     * @example
+     *
+     * var func = function(greeting) {
+     *   return greeting + ' ' + this.name;
+     * };
+     *
+     * func = _.bind(func, { 'name': 'moe' }, 'hi');
+     * func();
+     * // => 'hi moe'
+     */
+    function bind(func, thisArg) {
+      return arguments.length > 2
+        ? createBound(func, 17, nativeSlice.call(arguments, 2), null, thisArg)
+        : createBound(func, 1, null, null, thisArg);
+    }
+
+    /**
+     * Binds methods of an object to the object itself, overwriting the existing
+     * method. Method names may be specified as individual arguments or as arrays
+     * of method names. If no method names are provided all the function properties
+     * of `object` will be bound.
+     *
+     * @static
+     * @memberOf _
+     * @category Functions
+     * @param {Object} object The object to bind and assign the bound methods to.
+     * @param {...string} [methodName] The object method names to
+     *  bind, specified as individual method names or arrays of method names.
+     * @returns {Object} Returns `object`.
+     * @example
+     *
+     * var view = {
+     *  'label': 'docs',
+     *  'onClick': function() { console.log('clicked ' + this.label); }
+     * };
+     *
+     * _.bindAll(view);
+     * jQuery('#docs').on('click', view.onClick);
+     * // => logs 'clicked docs', when the button is clicked
+     */
+    function bindAll(object) {
+      var funcs = arguments.length > 1 ? baseFlatten(arguments, true, false, 1) : functions(object),
+          index = -1,
+          length = funcs.length;
+
+      while (++index < length) {
+        var key = funcs[index];
+        object[key] = createBound(object[key], 1, null, null, object);
+      }
+      return object;
+    }
+
+    /**
+     * Creates a function that, when called, invokes the method at `object[key]`
+     * and prepends any additional `bindKey` arguments to those provided to the bound
+     * function. This method differs from `_.bind` by allowing bound functions to
+     * reference methods that will be redefined or don't yet exist.
+     * See http://michaux.ca/articles/lazy-function-definition-pattern.
+     *
+     * @static
+     * @memberOf _
+     * @category Functions
+     * @param {Object} object The object the method belongs to.
+     * @param {string} key The key of the method.
+     * @param {...*} [arg] Arguments to be partially applied.
+     * @returns {Function} Returns the new bound function.
+     * @example
+     *
+     * var object = {
+     *   'name': 'moe',
+     *   'greet': function(greeting) {
+     *     return greeting + ' ' + this.name;
+     *   }
+     * };
+     *
+     * var func = _.bindKey(object, 'greet', 'hi');
+     * func();
+     * // => 'hi moe'
+     *
+     * object.greet = function(greeting) {
+     *   return greeting + ', ' + this.name + '!';
+     * };
+     *
+     * func();
+     * // => 'hi, moe!'
+     */
+    function bindKey(object, key) {
+      return arguments.length > 2
+        ? createBound(key, 19, nativeSlice.call(arguments, 2), null, object)
+        : createBound(key, 3, null, null, object);
+    }
+
+    /**
+     * Creates a function that is the composition of the provided functions,
+     * where each function consumes the return value of the function that follows.
+     * For example, composing the functions `f()`, `g()`, and `h()` produces `f(g(h()))`.
+     * Each function is executed with the `this` binding of the composed function.
+     *
+     * @static
+     * @memberOf _
+     * @category Functions
+     * @param {...Function} [func] Functions to compose.
+     * @returns {Function} Returns the new composed function.
+     * @example
+     *
+     * var realNameMap = {
+     *   'curly': 'jerome'
+     * };
+     *
+     * var format = function(name) {
+     *   name = realNameMap[name.toLowerCase()] || name;
+     *   return name.charAt(0).toUpperCase() + name.slice(1).toLowerCase();
+     * };
+     *
+     * var greet = function(formatted) {
+     *   return 'Hiya ' + formatted + '!';
+     * };
+     *
+     * var welcome = _.compose(greet, format);
+     * welcome('curly');
+     * // => 'Hiya Jerome!'
+     */
+    function compose() {
+      var funcs = arguments,
+          length = funcs.length;
+
+      while (length--) {
+        if (!isFunction(funcs[length])) {
+          throw new TypeError;
+        }
+      }
+      return function() {
+        var args = arguments,
+            length = funcs.length;
+
+        while (length--) {
+          args = [funcs[length].apply(this, args)];
+        }
+        return args[0];
+      };
+    }
+
+    /**
+     * Produces a callback bound to an optional `thisArg`. If `func` is a property
+     * name the created callback will return the property value for a given element.
+     * If `func` is an object the created callback will return `true` for elements
+     * that contain the equivalent object properties, otherwise it will return `false`.
+     *
+     * @static
+     * @memberOf _
+     * @category Functions
+     * @param {*} [func=identity] The value to convert to a callback.
+     * @param {*} [thisArg] The `this` binding of the created callback.
+     * @param {number} [argCount] The number of arguments the callback accepts.
+     * @returns {Function} Returns a callback function.
+     * @example
+     *
+     * var stooges = [
+     *   { 'name': 'moe', 'age': 40 },
+     *   { 'name': 'larry', 'age': 50 }
+     * ];
+     *
+     * // wrap to create custom callback shorthands
+     * _.createCallback = _.wrap(_.createCallback, function(func, callback, thisArg) {
+     *   var match = /^(.+?)__([gl]t)(.+)$/.exec(callback);
+     *   return !match ? func(callback, thisArg) : function(object) {
+     *     return match[2] == 'gt' ? object[match[1]] > match[3] : object[match[1]] < match[3];
+     *   };
+     * });
+     *
+     * _.filter(stooges, 'age__gt45');
+     * // => [{ 'name': 'larry', 'age': 50 }]
+     */
+    function createCallback(func, thisArg, argCount) {
+      var type = typeof func;
+      if (func == null || type == 'function') {
+        return baseCreateCallback(func, thisArg, argCount);
+      }
+      // handle "_.pluck" style callback shorthands
+      if (type != 'object') {
+        return function(object) {
+          return object[func];
+        };
+      }
+      var props = keys(func),
+          key = props[0],
+          a = func[key];
+
+      // handle "_.where" style callback shorthands
+      if (props.length == 1 && a === a && !isObject(a)) {
+        // fast path the common case of providing an object with a single
+        // property containing a primitive value
+        return function(object) {
+          var b = object[key];
+          return a === b && (a !== 0 || (1 / a == 1 / b));
+        };
+      }
+      return function(object) {
+        var length = props.length,
+            result = false;
+
+        while (length--) {
+          if (!(result = baseIsEqual(object[props[length]], func[props[length]], null, true))) {
+            break;
+          }
+        }
+        return result;
+      };
+    }
+
+    /**
+     * Creates a function which accepts one or more arguments of `func` that when
+     * invoked either executes `func` returning its result, if all `func` arguments
+     * have been provided, or returns a function that accepts one or more of the
+     * remaining `func` arguments, and so on. The arity of `func` can be specified
+     * if `func.length` is not sufficient.
+     *
+     * @static
+     * @memberOf _
+     * @category Functions
+     * @param {Function} func The function to curry.
+     * @param {number} [arity=func.length] The arity of `func`.
+     * @returns {Function} Returns the new curried function.
+     * @example
+     *
+     * var curried = _.curry(function(a, b, c) {
+     *   console.log(a + b + c);
+     * });
+     *
+     * curried(1)(2)(3);
+     * // => 6
+     *
+     * curried(1, 2)(3);
+     * // => 6
+     *
+     * curried(1, 2, 3);
+     * // => 6
+     */
+    function curry(func, arity) {
+      arity = typeof arity == 'number' ? arity : (+arity || func.length);
+      return createBound(func, 4, null, null, null, arity);
+    }
+
+    /**
+     * Creates a function that will delay the execution of `func` until after
+     * `wait` milliseconds have elapsed since the last time it was invoked.
+     * Provide an options object to indicate that `func` should be invoked on
+     * the leading and/or trailing edge of the `wait` timeout. Subsequent calls
+     * to the debounced function will return the result of the last `func` call.
+     *
+     * Note: If `leading` and `trailing` options are `true` `func` will be called
+     * on the trailing edge of the timeout only if the the debounced function is
+     * invoked more than once during the `wait` timeout.
+     *
+     * @static
+     * @memberOf _
+     * @category Functions
+     * @param {Function} func The function to debounce.
+     * @param {number} wait The number of milliseconds to delay.
+     * @param {Object} [options] The options object.
+     * @param {boolean} [options.leading=false] Specify execution on the leading edge of the timeout.
+     * @param {number} [options.maxWait] The maximum time `func` is allowed to be delayed before it's called.
+     * @param {boolean} [options.trailing=true] Specify execution on the trailing edge of the timeout.
+     * @returns {Function} Returns the new debounced function.
+     * @example
+     *
+     * // avoid costly calculations while the window size is in flux
+     * var lazyLayout = _.debounce(calculateLayout, 150);
+     * jQuery(window).on('resize', lazyLayout);
+     *
+     * // execute `sendMail` when the click event is fired, debouncing subsequent calls
+     * jQuery('#postbox').on('click', _.debounce(sendMail, 300, {
+     *   'leading': true,
+     *   'trailing': false
+     * });
+     *
+     * // ensure `batchLog` is executed once after 1 second of debounced calls
+     * var source = new EventSource('/stream');
+     * source.addEventListener('message', _.debounce(batchLog, 250, {
+     *   'maxWait': 1000
+     * }, false);
+     */
+    function debounce(func, wait, options) {
+      var args,
+          maxTimeoutId,
+          result,
+          stamp,
+          thisArg,
+          timeoutId,
+          trailingCall,
+          lastCalled = 0,
+          maxWait = false,
+          trailing = true;
+
+      if (!isFunction(func)) {
+        throw new TypeError;
+      }
+      wait = nativeMax(0, wait) || 0;
+      if (options === true) {
+        var leading = true;
+        trailing = false;
+      } else if (isObject(options)) {
+        leading = options.leading;
+        maxWait = 'maxWait' in options && (nativeMax(wait, options.maxWait) || 0);
+        trailing = 'trailing' in options ? options.trailing : trailing;
+      }
+      var delayed = function() {
+        var remaining = wait - (now() - stamp);
+        if (remaining <= 0) {
+          if (maxTimeoutId) {
+            clearTimeout(maxTimeoutId);
+          }
+          var isCalled = trailingCall;
+          maxTimeoutId = timeoutId = trailingCall = undefined;
+          if (isCalled) {
+            lastCalled = now();
+            result = func.apply(thisArg, args);
+          }
+        } else {
+          timeoutId = setTimeout(delayed, remaining);
+        }
+      };
+
+      var maxDelayed = function() {
+        if (timeoutId) {
+          clearTimeout(timeoutId);
+        }
+        maxTimeoutId = timeoutId = trailingCall = undefined;
+        if (trailing || (maxWait !== wait)) {
+          lastCalled = now();
+          result = func.apply(thisArg, args);
+        }
+      };
+
+      return function() {
+        args = arguments;
+        stamp = now();
+        thisArg = this;
+        trailingCall = trailing && (timeoutId || !leading);
+
+        if (maxWait === false) {
+          var leadingCall = leading && !timeoutId;
+        } else {
+          if (!maxTimeoutId && !leading) {
+            lastCalled = stamp;
+          }
+          var remaining = maxWait - (stamp - lastCalled);
+          if (remaining <= 0) {
+            if (maxTimeoutId) {
+              maxTimeoutId = clearTimeout(maxTimeoutId);
+            }
+            lastCalled = stamp;
+            result = func.apply(thisArg, args);
+          }
+          else if (!maxTimeoutId) {
+            maxTimeoutId = setTimeout(maxDelayed, remaining);
+          }
+        }
+        if (!timeoutId && wait !== maxWait) {
+          timeoutId = setTimeout(delayed, wait);
+        }
+        if (leadingCall) {
+          result = func.apply(thisArg, args);
+        }
+        return result;
+      };
+    }
+
+    /**
+     * Defers executing the `func` function until the current call stack has cleared.
+     * Additional arguments will be provided to `func` when it is invoked.
+     *
+     * @static
+     * @memberOf _
+     * @category Functions
+     * @param {Function} func The function to defer.
+     * @param {...*} [arg] Arguments to invoke the function with.
+     * @returns {number} Returns the timer id.
+     * @example
+     *
+     * _.defer(function() { console.log('deferred'); });
+     * // returns from the function before 'deferred' is logged
+     */
+    function defer(func) {
+      if (!isFunction(func)) {
+        throw new TypeError;
+      }
+      var args = nativeSlice.call(arguments, 1);
+      return setTimeout(function() { func.apply(undefined, args); }, 1);
+    }
+    // use `setImmediate` if available in Node.js
+    if (isV8 && moduleExports && typeof setImmediate == 'function') {
+      defer = function(func) {
+        if (!isFunction(func)) {
+          throw new TypeError;
+        }
+        return setImmediate.apply(context, arguments);
+      };
+    }
+
+    /**
+     * Executes the `func` function after `wait` milliseconds. Additional arguments
+     * will be provided to `func` when it is invoked.
+     *
+     * @static
+     * @memberOf _
+     * @category Functions
+     * @param {Function} func The function to delay.
+     * @param {number} wait The number of milliseconds to delay execution.
+     * @param {...*} [arg] Arguments to invoke the function with.
+     * @returns {number} Returns the timer id.
+     * @example
+     *
+     * var log = _.bind(console.log, console);
+     * _.delay(log, 1000, 'logged later');
+     * // => 'logged later' (Appears after one second.)
+     */
+    function delay(func, wait) {
+      if (!isFunction(func)) {
+        throw new TypeError;
+      }
+      var args = nativeSlice.call(arguments, 2);
+      return setTimeout(function() { func.apply(undefined, args); }, wait);
+    }
+
+    /**
+     * Creates a function that memoizes the result of `func`. If `resolver` is
+     * provided it will be used to determine the cache key for storing the result
+     * based on the arguments provided to the memoized function. By default, the
+     * first argument provided to the memoized function is used as the cache key.
+     * The `func` is executed with the `this` binding of the memoized function.
+     * The result cache is exposed as the `cache` property on the memoized function.
+     *
+     * @static
+     * @memberOf _
+     * @category Functions
+     * @param {Function} func The function to have its output memoized.
+     * @param {Function} [resolver] A function used to resolve the cache key.
+     * @returns {Function} Returns the new memoizing function.
+     * @example
+     *
+     * var fibonacci = _.memoize(function(n) {
+     *   return n < 2 ? n : fibonacci(n - 1) + fibonacci(n - 2);
+     * });
+     *
+     * var data = {
+     *   'moe': { 'name': 'moe', 'age': 40 },
+     *   'curly': { 'name': 'curly', 'age': 60 }
+     * };
+     *
+     * // modifying the result cache
+     * var stooge = _.memoize(function(name) { return data[name]; }, _.identity);
+     * stooge('curly');
+     * // => { 'name': 'curly', 'age': 60 }
+     *
+     * stooge.cache.curly.name = 'jerome';
+     * stooge('curly');
+     * // => { 'name': 'jerome', 'age': 60 }
+     */
+    function memoize(func, resolver) {
+      if (!isFunction(func)) {
+        throw new TypeError;
+      }
+      var memoized = function() {
+        var cache = memoized.cache,
+            key = resolver ? resolver.apply(this, arguments) : keyPrefix + arguments[0];
+
+        return hasOwnProperty.call(cache, key)
+          ? cache[key]
+          : (cache[key] = func.apply(this, arguments));
+      }
+      memoized.cache = {};
+      return memoized;
+    }
+
+    /**
+     * Creates a function that is restricted to execute `func` once. Repeat calls to
+     * the function will return the value of the first call. The `func` is executed
+     * with the `this` binding of the created function.
+     *
+     * @static
+     * @memberOf _
+     * @category Functions
+     * @param {Function} func The function to restrict.
+     * @returns {Function} Returns the new restricted function.
+     * @example
+     *
+     * var initialize = _.once(createApplication);
+     * initialize();
+     * initialize();
+     * // `initialize` executes `createApplication` once
+     */
+    function once(func) {
+      var ran,
+          result;
+
+      if (!isFunction(func)) {
+        throw new TypeError;
+      }
+      return function() {
+        if (ran) {
+          return result;
+        }
+        ran = true;
+        result = func.apply(this, arguments);
+
+        // clear the `func` variable so the function may be garbage collected
+        func = null;
+        return result;
+      };
+    }
+
+    /**
+     * Creates a function that, when called, invokes `func` with any additional
+     * `partial` arguments prepended to those provided to the new function. This
+     * method is similar to `_.bind` except it does **not** alter the `this` binding.
+     *
+     * @static
+     * @memberOf _
+     * @category Functions
+     * @param {Function} func The function to partially apply arguments to.
+     * @param {...*} [arg] Arguments to be partially applied.
+     * @returns {Function} Returns the new partially applied function.
+     * @example
+     *
+     * var greet = function(greeting, name) { return greeting + ' ' + name; };
+     * var hi = _.partial(greet, 'hi');
+     * hi('moe');
+     * // => 'hi moe'
+     */
+    function partial(func) {
+      return createBound(func, 16, nativeSlice.call(arguments, 1));
+    }
+
+    /**
+     * This method is like `_.partial` except that `partial` arguments are
+     * appended to those provided to the new function.
+     *
+     * @static
+     * @memberOf _
+     * @category Functions
+     * @param {Function} func The function to partially apply arguments to.
+     * @param {...*} [arg] Arguments to be partially applied.
+     * @returns {Function} Returns the new partially applied function.
+     * @example
+     *
+     * var defaultsDeep = _.partialRight(_.merge, _.defaults);
+     *
+     * var options = {
+     *   'variable': 'data',
+     *   'imports': { 'jq': $ }
+     * };
+     *
+     * defaultsDeep(options, _.templateSettings);
+     *
+     * options.variable
+     * // => 'data'
+     *
+     * options.imports
+     * // => { '_': _, 'jq': $ }
+     */
+    function partialRight(func) {
+      return createBound(func, 32, null, nativeSlice.call(arguments, 1));
+    }
+
+    /**
+     * Creates a function that, when executed, will only call the `func` function
+     * at most once per every `wait` milliseconds. Provide an options object to
+     * indicate that `func` should be invoked on the leading and/or trailing edge
+     * of the `wait` timeout. Subsequent calls to the throttled function will
+     * return the result of the last `func` call.
+     *
+     * Note: If `leading` and `trailing` options are `true` `func` will be called
+     * on the trailing edge of the timeout only if the the throttled function is
+     * invoked more than once during the `wait` timeout.
+     *
+     * @static
+     * @memberOf _
+     * @category Functions
+     * @param {Function} func The function to throttle.
+     * @param {number} wait The number of milliseconds to throttle executions to.
+     * @param {Object} [options] The options object.
+     * @param {boolean} [options.leading=true] Specify execution on the leading edge of the timeout.
+     * @param {boolean} [options.trailing=true] Specify execution on the trailing edge of the timeout.
+     * @returns {Function} Returns the new throttled function.
+     * @example
+     *
+     * // avoid excessively updating the position while scrolling
+     * var throttled = _.throttle(updatePosition, 100);
+     * jQuery(window).on('scroll', throttled);
+     *
+     * // execute `renewToken` when the click event is fired, but not more than once every 5 minutes
+     * jQuery('.interactive').on('click', _.throttle(renewToken, 300000, {
+     *   'trailing': false
+     * }));
+     */
+    function throttle(func, wait, options) {
+      var leading = true,
+          trailing = true;
+
+      if (!isFunction(func)) {
+        throw new TypeError;
+      }
+      if (options === false) {
+        leading = false;
+      } else if (isObject(options)) {
+        leading = 'leading' in options ? options.leading : leading;
+        trailing = 'trailing' in options ? options.trailing : trailing;
+      }
+      debounceOptions.leading = leading;
+      debounceOptions.maxWait = wait;
+      debounceOptions.trailing = trailing;
+
+      var result = debounce(func, wait, debounceOptions);
+      return result;
+    }
+
+    /**
+     * Creates a function that provides `value` to the wrapper function as its
+     * first argument. Additional arguments provided to the function are appended
+     * to those provided to the wrapper function. The wrapper is executed with
+     * the `this` binding of the created function.
+     *
+     * @static
+     * @memberOf _
+     * @category Functions
+     * @param {*} value The value to wrap.
+     * @param {Function} wrapper The wrapper function.
+     * @returns {Function} Returns the new function.
+     * @example
+     *
+     * var hello = function(name) { return 'hello ' + name; };
+     * hello = _.wrap(hello, function(func) {
+     *   return 'before, ' + func('moe') + ', after';
+     * });
+     * hello();
+     * // => 'before, hello moe, after'
+     */
+    function wrap(value, wrapper) {
+      if (!isFunction(wrapper)) {
+        throw new TypeError;
+      }
+      return function() {
+        var args = [value];
+        push.apply(args, arguments);
+        return wrapper.apply(this, args);
+      };
+    }
+
+    /*--------------------------------------------------------------------------*/
+
+    /**
+     * Converts the characters `&`, `<`, `>`, `"`, and `'` in `string` to their
+     * corresponding HTML entities.
+     *
+     * @static
+     * @memberOf _
+     * @category Utilities
+     * @param {string} string The string to escape.
+     * @returns {string} Returns the escaped string.
+     * @example
+     *
+     * _.escape('Moe, Larry & Curly');
+     * // => 'Moe, Larry &amp; Curly'
+     */
+    function escape(string) {
+      return string == null ? '' : String(string).replace(reUnescapedHtml, escapeHtmlChar);
+    }
+
+    /**
+     * This method returns the first argument provided to it.
+     *
+     * @static
+     * @memberOf _
+     * @category Utilities
+     * @param {*} value Any value.
+     * @returns {*} Returns `value`.
+     * @example
+     *
+     * var moe = { 'name': 'moe' };
+     * moe === _.identity(moe);
+     * // => true
+     */
+    function identity(value) {
+      return value;
+    }
+
+    /**
+     * Adds function properties of a source object to the `lodash` function and
+     * chainable wrapper.
+     *
+     * @static
+     * @memberOf _
+     * @category Utilities
+     * @param {Object} object The object of function properties to add to `lodash`.
+     * @param {Object} object The object of function properties to add to `lodash`.
+     * @example
+     *
+     * _.mixin({
+     *   'capitalize': function(string) {
+     *     return string.charAt(0).toUpperCase() + string.slice(1).toLowerCase();
+     *   }
+     * });
+     *
+     * _.capitalize('moe');
+     * // => 'Moe'
+     *
+     * _('moe').capitalize();
+     * // => 'Moe'
+     */
+    function mixin(object, source) {
+      var ctor = object,
+          isFunc = !source || isFunction(ctor);
+
+      if (!source) {
+        ctor = lodashWrapper;
+        source = object;
+        object = lodash;
+      }
+      forEach(functions(source), function(methodName) {
+        var func = object[methodName] = source[methodName];
+        if (isFunc) {
+          ctor.prototype[methodName] = function() {
+            var value = this.__wrapped__,
+                args = [value];
+
+            push.apply(args, arguments);
+            var result = func.apply(object, args);
+            if (value && typeof value == 'object' && value === result) {
+              return this;
+            }
+            result = new ctor(result);
+            result.__chain__ = this.__chain__;
+            return result;
+          };
+        }
+      });
+    }
+
+    /**
+     * Reverts the '_' variable to its previous value and returns a reference to
+     * the `lodash` function.
+     *
+     * @static
+     * @memberOf _
+     * @category Utilities
+     * @returns {Function} Returns the `lodash` function.
+     * @example
+     *
+     * var lodash = _.noConflict();
+     */
+    function noConflict() {
+      context._ = oldDash;
+      return this;
+    }
+
+    /**
+     * Converts the given value into an integer of the specified radix.
+     * If `radix` is `undefined` or `0` a `radix` of `10` is used unless the
+     * `value` is a hexadecimal, in which case a `radix` of `16` is used.
+     *
+     * Note: This method avoids differences in native ES3 and ES5 `parseInt`
+     * implementations. See http://es5.github.io/#E.
+     *
+     * @static
+     * @memberOf _
+     * @category Utilities
+     * @param {string} value The value to parse.
+     * @param {number} [radix] The radix used to interpret the value to parse.
+     * @returns {number} Returns the new integer value.
+     * @example
+     *
+     * _.parseInt('08');
+     * // => 8
+     */
+    var parseInt = nativeParseInt(whitespace + '08') == 8 ? nativeParseInt : function(value, radix) {
+      // Firefox and Opera still follow the ES3 specified implementation of `parseInt`
+      return nativeParseInt(isString(value) ? value.replace(reLeadingSpacesAndZeros, '') : value, radix || 0);
+    };
+
+    /**
+     * Produces a random number between `min` and `max` (inclusive). If only one
+     * argument is provided a number between `0` and the given number will be
+     * returned. If `floating` is truey or either `min` or `max` are floats a
+     * floating-point number will be returned instead of an integer.
+     *
+     * @static
+     * @memberOf _
+     * @category Utilities
+     * @param {number} [min=0] The minimum possible value.
+     * @param {number} [max=1] The maximum possible value.
+     * @param {boolean} [floating=false] Specify returning a floating-point number.
+     * @returns {number} Returns a random number.
+     * @example
+     *
+     * _.random(0, 5);
+     * // => an integer between 0 and 5
+     *
+     * _.random(5);
+     * // => also an integer between 0 and 5
+     *
+     * _.random(5, true);
+     * // => a floating-point number between 0 and 5
+     *
+     * _.random(1.2, 5.2);
+     * // => a floating-point number between 1.2 and 5.2
+     */
+    function random(min, max, floating) {
+      var noMin = min == null,
+          noMax = max == null;
+
+      if (floating == null) {
+        if (typeof min == 'boolean' && noMax) {
+          floating = min;
+          min = 1;
+        }
+        else if (!noMax && typeof max == 'boolean') {
+          floating = max;
+          noMax = true;
+        }
+      }
+      if (noMin && noMax) {
+        max = 1;
+      }
+      min = +min || 0;
+      if (noMax) {
+        max = min;
+        min = 0;
+      } else {
+        max = +max || 0;
+      }
+      var rand = nativeRandom();
+      return (floating || min % 1 || max % 1)
+        ? nativeMin(min + (rand * (max - min + parseFloat('1e-' + ((rand +'').length - 1)))), max)
+        : min + floor(rand * (max - min + 1));
+    }
+
+    /**
+     * Resolves the value of `property` on `object`. If `property` is a function
+     * it will be invoked with the `this` binding of `object` and its result returned,
+     * else the property value is returned. If `object` is falsey then `undefined`
+     * is returned.
+     *
+     * @static
+     * @memberOf _
+     * @category Utilities
+     * @param {Object} object The object to inspect.
+     * @param {string} property The property to get the value of.
+     * @returns {*} Returns the resolved value.
+     * @example
+     *
+     * var object = {
+     *   'cheese': 'crumpets',
+     *   'stuff': function() {
+     *     return 'nonsense';
+     *   }
+     * };
+     *
+     * _.result(object, 'cheese');
+     * // => 'crumpets'
+     *
+     * _.result(object, 'stuff');
+     * // => 'nonsense'
+     */
+    function result(object, property) {
+      if (object) {
+        var value = object[property];
+        return isFunction(value) ? object[property]() : value;
+      }
+    }
+
+    /**
+     * A micro-templating method that handles arbitrary delimiters, preserves
+     * whitespace, and correctly escapes quotes within interpolated code.
+     *
+     * Note: In the development build, `_.template` utilizes sourceURLs for easier
+     * debugging. See http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl
+     *
+     * For more information on precompiling templates see:
+     * http://lodash.com/#custom-builds
+     *
+     * For more information on Chrome extension sandboxes see:
+     * http://developer.chrome.com/stable/extensions/sandboxingEval.html
+     *
+     * @static
+     * @memberOf _
+     * @category Utilities
+     * @param {string} text The template text.
+     * @param {Object} data The data object used to populate the text.
+     * @param {Object} [options] The options object.
+     * @param {RegExp} [options.escape] The "escape" delimiter.
+     * @param {RegExp} [options.evaluate] The "evaluate" delimiter.
+     * @param {Object} [options.imports] An object to import into the template as local variables.
+     * @param {RegExp} [options.interpolate] The "interpolate" delimiter.
+     * @param {string} [sourceURL] The sourceURL of the template's compiled source.
+     * @param {string} [variable] The data object variable name.
+     * @returns {Function|string} Returns a compiled function when no `data` object
+     *  is given, else it returns the interpolated text.
+     * @example
+     *
+     * // using the "interpolate" delimiter to create a compiled template
+     * var compiled = _.template('hello <%= name %>');
+     * compiled({ 'name': 'moe' });
+     * // => 'hello moe'
+     *
+     * // using the "escape" delimiter to escape HTML in data property values
+     * _.template('<b><%- value %></b>', { 'value': '<script>' });
+     * // => '<b>&lt;script&gt;</b>'
+     *
+     * // using the "evaluate" delimiter to generate HTML
+     * var list = '<% _.forEach(people, function(name) { %><li><%- name %></li><% }); %>';
+     * _.template(list, { 'people': ['moe', 'larry'] });
+     * // => '<li>moe</li><li>larry</li>'
+     *
+     * // using the ES6 delimiter as an alternative to the default "interpolate" delimiter
+     * _.template('hello ${ name }', { 'name': 'curly' });
+     * // => 'hello curly'
+     *
+     * // using the internal `print` function in "evaluate" delimiters
+     * _.template('<% print("hello " + name); %>!', { 'name': 'larry' });
+     * // => 'hello larry!'
+     *
+     * // using a custom template delimiters
+     * _.templateSettings = {
+     *   'interpolate': /{{([\s\S]+?)}}/g
+     * };
+     *
+     * _.template('hello {{ name }}!', { 'name': 'mustache' });
+     * // => 'hello mustache!'
+     *
+     * // using the `imports` option to import jQuery
+     * var list = '<% $.each(people, function(name) { %><li><%- name %></li><% }); %>';
+     * _.template(list, { 'people': ['moe', 'larry'] }, { 'imports': { '$': jQuery } });
+     * // => '<li>moe</li><li>larry</li>'
+     *
+     * // using the `sourceURL` option to specify a custom sourceURL for the template
+     * var compiled = _.template('hello <%= name %>', null, { 'sourceURL': '/basic/greeting.jst' });
+     * compiled(data);
+     * // => find the source of "greeting.jst" under the Sources tab or Resources panel of the web inspector
+     *
+     * // using the `variable` option to ensure a with-statement isn't used in the compiled template
+     * var compiled = _.template('hi <%= data.name %>!', null, { 'variable': 'data' });
+     * compiled.source;
+     * // => function(data) {
+     *   var __t, __p = '', __e = _.escape;
+     *   __p += 'hi ' + ((__t = ( data.name )) == null ? '' : __t) + '!';
+     *   return __p;
+     * }
+     *
+     * // using the `source` property to inline compiled templates for meaningful
+     * // line numbers in error messages and a stack trace
+     * fs.writeFileSync(path.join(cwd, 'jst.js'), '\
+     *   var JST = {\
+     *     "main": ' + _.template(mainText).source + '\
+     *   };\
+     * ');
+     */
+    function template(text, data, options) {
+      // based on John Resig's `tmpl` implementation
+      // http://ejohn.org/blog/javascript-micro-templating/
+      // and Laura Doktorova's doT.js
+      // https://github.com/olado/doT
+      var settings = lodash.templateSettings;
+      text || (text = '');
+
+      // avoid missing dependencies when `iteratorTemplate` is not defined
+      options = defaults({}, options, settings);
+
+      var imports = defaults({}, options.imports, settings.imports),
+          importsKeys = keys(imports),
+          importsValues = values(imports);
+
+      var isEvaluating,
+          index = 0,
+          interpolate = options.interpolate || reNoMatch,
+          source = "__p += '";
+
+      // compile the regexp to match each delimiter
+      var reDelimiters = RegExp(
+        (options.escape || reNoMatch).source + '|' +
+        interpolate.source + '|' +
+        (interpolate === reInterpolate ? reEsTemplate : reNoMatch).source + '|' +
+        (options.evaluate || reNoMatch).source + '|$'
+      , 'g');
+
+      text.replace(reDelimiters, function(match, escapeValue, interpolateValue, esTemplateValue, evaluateValue, offset) {
+        interpolateValue || (interpolateValue = esTemplateValue);
+
+        // escape characters that cannot be included in string literals
+        source += text.slice(index, offset).replace(reUnescapedString, escapeStringChar);
+
+        // replace delimiters with snippets
+        if (escapeValue) {
+          source += "' +\n__e(" + escapeValue + ") +\n'";
+        }
+        if (evaluateValue) {
+          isEvaluating = true;
+          source += "';\n" + evaluateValue + ";\n__p += '";
+        }
+        if (interpolateValue) {
+          source += "' +\n((__t = (" + interpolateValue + ")) == null ? '' : __t) +\n'";
+        }
+        index = offset + match.length;
+
+        // the JS engine embedded in Adobe products requires returning the `match`
+        // string in order to produce the correct `offset` value
+        return match;
+      });
+
+      source += "';\n";
+
+      // if `variable` is not specified, wrap a with-statement around the generated
+      // code to add the data object to the top of the scope chain
+      var variable = options.variable,
+          hasVariable = variable;
+
+      if (!hasVariable) {
+        variable = 'obj';
+        source = 'with (' + variable + ') {\n' + source + '\n}\n';
+      }
+      // cleanup code by stripping empty strings
+      source = (isEvaluating ? source.replace(reEmptyStringLeading, '') : source)
+        .replace(reEmptyStringMiddle, '$1')
+        .replace(reEmptyStringTrailing, '$1;');
+
+      // frame code as the function body
+      source = 'function(' + variable + ') {\n' +
+        (hasVariable ? '' : variable + ' || (' + variable + ' = {});\n') +
+        "var __t, __p = '', __e = _.escape" +
+        (isEvaluating
+          ? ', __j = Array.prototype.join;\n' +
+            "function print() { __p += __j.call(arguments, '') }\n"
+          : ';\n'
+        ) +
+        source +
+        'return __p\n}';
+
+      // Use a sourceURL for easier debugging.
+      // http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl
+      var sourceURL = '\n/*\n//# sourceURL=' + (options.sourceURL || '/lodash/template/source[' + (templateCounter++) + ']') + '\n*/';
+
+      try {
+        var result = Function(importsKeys, 'return ' + source + sourceURL).apply(undefined, importsValues);
+      } catch(e) {
+        e.source = source;
+        throw e;
+      }
+      if (data) {
+        return result(data);
+      }
+      // provide the compiled function's source by its `toString` method, in
+      // supported environments, or the `source` property as a convenience for
+      // inlining compiled templates during the build process
+      result.source = source;
+      return result;
+    }
+
+    /**
+     * Executes the callback `n` times, returning an array of the results
+     * of each callback execution. The callback is bound to `thisArg` and invoked
+     * with one argument; (index).
+     *
+     * @static
+     * @memberOf _
+     * @category Utilities
+     * @param {number} n The number of times to execute the callback.
+     * @param {Function} callback The function called per iteration.
+     * @param {*} [thisArg] The `this` binding of `callback`.
+     * @returns {Array} Returns an array of the results of each `callback` execution.
+     * @example
+     *
+     * var diceRolls = _.times(3, _.partial(_.random, 1, 6));
+     * // => [3, 6, 4]
+     *
+     * _.times(3, function(n) { mage.castSpell(n); });
+     * // => calls `mage.castSpell(n)` three times, passing `n` of `0`, `1`, and `2` respectively
+     *
+     * _.times(3, function(n) { this.cast(n); }, mage);
+     * // => also calls `mage.castSpell(n)` three times
+     */
+    function times(n, callback, thisArg) {
+      n = (n = +n) > -1 ? n : 0;
+      var index = -1,
+          result = Array(n);
+
+      callback = baseCreateCallback(callback, thisArg, 1);
+      while (++index < n) {
+        result[index] = callback(index);
+      }
+      return result;
+    }
+
+    /**
+     * The inverse of `_.escape` this method converts the HTML entities
+     * `&amp;`, `&lt;`, `&gt;`, `&quot;`, and `&#39;` in `string` to their
+     * corresponding characters.
+     *
+     * @static
+     * @memberOf _
+     * @category Utilities
+     * @param {string} string The string to unescape.
+     * @returns {string} Returns the unescaped string.
+     * @example
+     *
+     * _.unescape('Moe, Larry &amp; Curly');
+     * // => 'Moe, Larry & Curly'
+     */
+    function unescape(string) {
+      return string == null ? '' : String(string).replace(reEscapedHtml, unescapeHtmlChar);
+    }
+
+    /**
+     * Generates a unique ID. If `prefix` is provided the ID will be appended to it.
+     *
+     * @static
+     * @memberOf _
+     * @category Utilities
+     * @param {string} [prefix] The value to prefix the ID with.
+     * @returns {string} Returns the unique ID.
+     * @example
+     *
+     * _.uniqueId('contact_');
+     * // => 'contact_104'
+     *
+     * _.uniqueId();
+     * // => '105'
+     */
+    function uniqueId(prefix) {
+      var id = ++idCounter;
+      return String(prefix == null ? '' : prefix) + id;
+    }
+
+    /*--------------------------------------------------------------------------*/
+
+    /**
+     * Creates a `lodash` object that wraps the given value with explicit
+     * method chaining enabled.
+     *
+     * @static
+     * @memberOf _
+     * @category Chaining
+     * @param {*} value The value to wrap.
+     * @returns {Object} Returns the wrapper object.
+     * @example
+     *
+     * var stooges = [
+     *   { 'name': 'moe', 'age': 40 },
+     *   { 'name': 'larry', 'age': 50 },
+     *   { 'name': 'curly', 'age': 60 }
+     * ];
+     *
+     * var youngest = _.chain(stooges)
+     *     .sortBy('age')
+     *     .map(function(stooge) { return stooge.name + ' is ' + stooge.age; })
+     *     .first()
+     *     .value();
+     * // => 'moe is 40'
+     */
+    function chain(value) {
+      value = new lodashWrapper(value);
+      value.__chain__ = true;
+      return value;
+    }
+
+    /**
+     * Invokes `interceptor` with the `value` as the first argument and then
+     * returns `value`. The purpose of this method is to "tap into" a method
+     * chain in order to perform operations on intermediate results within
+     * the chain.
+     *
+     * @static
+     * @memberOf _
+     * @category Chaining
+     * @param {*} value The value to provide to `interceptor`.
+     * @param {Function} interceptor The function to invoke.
+     * @returns {*} Returns `value`.
+     * @example
+     *
+     * _([1, 2, 3, 4])
+     *  .filter(function(num) { return num % 2 == 0; })
+     *  .tap(function(array) { console.log(array); })
+     *  .map(function(num) { return num * num; })
+     *  .value();
+     * // => // [2, 4] (logged)
+     * // => [4, 16]
+     */
+    function tap(value, interceptor) {
+      interceptor(value);
+      return value;
+    }
+
+    /**
+     * Enables explicit method chaining on the wrapper object.
+     *
+     * @name chain
+     * @memberOf _
+     * @category Chaining
+     * @returns {*} Returns the wrapper object.
+     * @example
+     *
+     * var stooges = [
+     *   { 'name': 'moe', 'age': 40 },
+     *   { 'name': 'larry', 'age': 50 }
+     * ];
+     *
+     * // without explicit chaining
+     * _(stooges).first();
+     * // => { 'name': 'moe', 'age': 40 }
+     *
+     * // with explicit chaining
+     * _(stooges).chain()
+     *   .first()
+     *   .pick('age')
+     *   .value()
+     * // => { 'age': 40 }
+     */
+    function wrapperChain() {
+      this.__chain__ = true;
+      return this;
+    }
+
+    /**
+     * Produces the `toString` result of the wrapped value.
+     *
+     * @name toString
+     * @memberOf _
+     * @category Chaining
+     * @returns {string} Returns the string result.
+     * @example
+     *
+     * _([1, 2, 3]).toString();
+     * // => '1,2,3'
+     */
+    function wrapperToString() {
+      return String(this.__wrapped__);
+    }
+
+    /**
+     * Extracts the wrapped value.
+     *
+     * @name valueOf
+     * @memberOf _
+     * @alias value
+     * @category Chaining
+     * @returns {*} Returns the wrapped value.
+     * @example
+     *
+     * _([1, 2, 3]).valueOf();
+     * // => [1, 2, 3]
+     */
+    function wrapperValueOf() {
+      return this.__wrapped__;
+    }
+
+    /*--------------------------------------------------------------------------*/
+
+    // add functions that return wrapped values when chaining
+    lodash.after = after;
+    lodash.assign = assign;
+    lodash.at = at;
+    lodash.bind = bind;
+    lodash.bindAll = bindAll;
+    lodash.bindKey = bindKey;
+    lodash.chain = chain;
+    lodash.compact = compact;
+    lodash.compose = compose;
+    lodash.countBy = countBy;
+    lodash.createCallback = createCallback;
+    lodash.curry = curry;
+    lodash.debounce = debounce;
+    lodash.defaults = defaults;
+    lodash.defer = defer;
+    lodash.delay = delay;
+    lodash.difference = difference;
+    lodash.filter = filter;
+    lodash.flatten = flatten;
+    lodash.forEach = forEach;
+    lodash.forEachRight = forEachRight;
+    lodash.forIn = forIn;
+    lodash.forInRight = forInRight;
+    lodash.forOwn = forOwn;
+    lodash.forOwnRight = forOwnRight;
+    lodash.functions = functions;
+    lodash.groupBy = groupBy;
+    lodash.indexBy = indexBy;
+    lodash.initial = initial;
+    lodash.intersection = intersection;
+    lodash.invert = invert;
+    lodash.invoke = invoke;
+    lodash.keys = keys;
+    lodash.map = map;
+    lodash.max = max;
+    lodash.memoize = memoize;
+    lodash.merge = merge;
+    lodash.min = min;
+    lodash.omit = omit;
+    lodash.once = once;
+    lodash.pairs = pairs;
+    lodash.partial = partial;
+    lodash.partialRight = partialRight;
+    lodash.pick = pick;
+    lodash.pluck = pluck;
+    lodash.pull = pull;
+    lodash.range = range;
+    lodash.reject = reject;
+    lodash.remove = remove;
+    lodash.rest = rest;
+    lodash.shuffle = shuffle;
+    lodash.sortBy = sortBy;
+    lodash.tap = tap;
+    lodash.throttle = throttle;
+    lodash.times = times;
+    lodash.toArray = toArray;
+    lodash.transform = transform;
+    lodash.union = union;
+    lodash.uniq = uniq;
+    lodash.values = values;
+    lodash.where = where;
+    lodash.without = without;
+    lodash.wrap = wrap;
+    lodash.zip = zip;
+    lodash.zipObject = zipObject;
+
+    // add aliases
+    lodash.collect = map;
+    lodash.drop = rest;
+    lodash.each = forEach;
+    lodash.eachRight = forEachRight;
+    lodash.extend = assign;
+    lodash.methods = functions;
+    lodash.object = zipObject;
+    lodash.select = filter;
+    lodash.tail = rest;
+    lodash.unique = uniq;
+    lodash.unzip = zip;
+
+    // add functions to `lodash.prototype`
+    mixin(lodash);
+
+    /*--------------------------------------------------------------------------*/
+
+    // add functions that return unwrapped values when chaining
+    lodash.clone = clone;
+    lodash.cloneDeep = cloneDeep;
+    lodash.contains = contains;
+    lodash.escape = escape;
+    lodash.every = every;
+    lodash.find = find;
+    lodash.findIndex = findIndex;
+    lodash.findKey = findKey;
+    lodash.findLast = findLast;
+    lodash.findLastIndex = findLastIndex;
+    lodash.findLastKey = findLastKey;
+    lodash.has = has;
+    lodash.identity = identity;
+    lodash.indexOf = indexOf;
+    lodash.isArguments = isArguments;
+    lodash.isArray = isArray;
+    lodash.isBoolean = isBoolean;
+    lodash.isDate = isDate;
+    lodash.isElement = isElement;
+    lodash.isEmpty = isEmpty;
+    lodash.isEqual = isEqual;
+    lodash.isFinite = isFinite;
+    lodash.isFunction = isFunction;
+    lodash.isNaN = isNaN;
+    lodash.isNull = isNull;
+    lodash.isNumber = isNumber;
+    lodash.isObject = isObject;
+    lodash.isPlainObject = isPlainObject;
+    lodash.isRegExp = isRegExp;
+    lodash.isString = isString;
+    lodash.isUndefined = isUndefined;
+    lodash.lastIndexOf = lastIndexOf;
+    lodash.mixin = mixin;
+    lodash.noConflict = noConflict;
+    lodash.parseInt = parseInt;
+    lodash.random = random;
+    lodash.reduce = reduce;
+    lodash.reduceRight = reduceRight;
+    lodash.result = result;
+    lodash.runInContext = runInContext;
+    lodash.size = size;
+    lodash.some = some;
+    lodash.sortedIndex = sortedIndex;
+    lodash.template = template;
+    lodash.unescape = unescape;
+    lodash.uniqueId = uniqueId;
+
+    // add aliases
+    lodash.all = every;
+    lodash.any = some;
+    lodash.detect = find;
+    lodash.findWhere = find;
+    lodash.foldl = reduce;
+    lodash.foldr = reduceRight;
+    lodash.include = contains;
+    lodash.inject = reduce;
+
+    forOwn(lodash, function(func, methodName) {
+      if (!lodash.prototype[methodName]) {
+        lodash.prototype[methodName] = function() {
+          var args = [this.__wrapped__],
+              chainAll = this.__chain__;
+
+          push.apply(args, arguments);
+          var result = func.apply(lodash, args);
+          return chainAll
+            ? new lodashWrapper(result, chainAll)
+            : result;
+        };
+      }
+    });
+
+    /*--------------------------------------------------------------------------*/
+
+    // add functions capable of returning wrapped and unwrapped values when chaining
+    lodash.first = first;
+    lodash.last = last;
+    lodash.sample = sample;
+
+    // add aliases
+    lodash.take = first;
+    lodash.head = first;
+
+    forOwn(lodash, function(func, methodName) {
+      var callbackable = methodName !== 'sample';
+      if (!lodash.prototype[methodName]) {
+        lodash.prototype[methodName]= function(n, guard) {
+          var chainAll = this.__chain__,
+              result = func(this.__wrapped__, n, guard);
+
+          return !chainAll && (n == null || (guard && !(callbackable && typeof n == 'function')))
+            ? result
+            : new lodashWrapper(result, chainAll);
+        };
+      }
+    });
+
+    /*--------------------------------------------------------------------------*/
+
+    /**
+     * The semantic version number.
+     *
+     * @static
+     * @memberOf _
+     * @type string
+     */
+    lodash.VERSION = '2.2.1';
+
+    // add "Chaining" functions to the wrapper
+    lodash.prototype.chain = wrapperChain;
+    lodash.prototype.toString = wrapperToString;
+    lodash.prototype.value = wrapperValueOf;
+    lodash.prototype.valueOf = wrapperValueOf;
+
+    // add `Array` functions that return unwrapped values
+    forEach(['join', 'pop', 'shift'], function(methodName) {
+      var func = arrayRef[methodName];
+      lodash.prototype[methodName] = function() {
+        var chainAll = this.__chain__,
+            result = func.apply(this.__wrapped__, arguments);
+
+        return chainAll
+          ? new lodashWrapper(result, chainAll)
+          : result;
+      };
+    });
+
+    // add `Array` functions that return the wrapped value
+    forEach(['push', 'reverse', 'sort', 'unshift'], function(methodName) {
+      var func = arrayRef[methodName];
+      lodash.prototype[methodName] = function() {
+        func.apply(this.__wrapped__, arguments);
+        return this;
+      };
+    });
+
+    // add `Array` functions that return new wrapped values
+    forEach(['concat', 'slice', 'splice'], function(methodName) {
+      var func = arrayRef[methodName];
+      lodash.prototype[methodName] = function() {
+        return new lodashWrapper(func.apply(this.__wrapped__, arguments), this.__chain__);
+      };
+    });
+
+    return lodash;
+  }
+
+  /*--------------------------------------------------------------------------*/
+
+  // expose Lo-Dash
+  var _ = runInContext();
+
+  // some AMD build optimizers, like r.js, check for condition patterns like the following:
+  if (typeof define == 'function' && typeof define.amd == 'object' && define.amd) {
+    // Expose Lo-Dash to the global object even when an AMD loader is present in
+    // case Lo-Dash was injected by a third-party script and not intended to be
+    // loaded as a module. The global assignment can be reverted in the Lo-Dash
+    // module by its `noConflict()` method.
+    root._ = _;
+
+    // define as an anonymous module so, through path mapping, it can be
+    // referenced as the "underscore" module
+    define(function() {
+      return _;
+    });
+  }
+  // check for `exports` after `define` in case a build optimizer adds an `exports` object
+  else if (freeExports && freeModule) {
+    // in Node.js or RingoJS
+    if (moduleExports) {
+      (freeModule.exports = _)._ = _;
+    }
+    // in Narwhal or Rhino -require
+    else {
+      freeExports._ = _;
+    }
+  }
+  else {
+    // in a browser or Rhino
+    root._ = _;
+  }
+}.call(this));
+
+//     Backbone.js 1.0.0
+
+//     (c) 2010-2013 Jeremy Ashkenas, DocumentCloud Inc.
+//     Backbone may be freely distributed under the MIT license.
+//     For all details and documentation:
+//     http://backbonejs.org
+
+(function(){
+
+  // Initial Setup
+  // -------------
+
+  // Save a reference to the global object (`window` in the browser, `exports`
+  // on the server).
+  var root = this;
+
+  // Save the previous value of the `Backbone` variable, so that it can be
+  // restored later on, if `noConflict` is used.
+  var previousBackbone = root.Backbone;
+
+  // Create local references to array methods we'll want to use later.
+  var array = [];
+  var push = array.push;
+  var slice = array.slice;
+  var splice = array.splice;
+
+  // The top-level namespace. All public Backbone classes and modules will
+  // be attached to this. Exported for both the browser and the server.
+  var Backbone;
+  if (typeof exports !== 'undefined') {
+    Backbone = exports;
+  } else {
+    Backbone = root.Backbone = {};
+  }
+
+  // Current version of the library. Keep in sync with `package.json`.
+  Backbone.VERSION = '1.0.0';
+
+  // Require Underscore, if we're on the server, and it's not already present.
+  var _ = root._;
+  if (!_ && (typeof require !== 'undefined')) _ = require('underscore');
+
+  // For Backbone's purposes, jQuery, Zepto, Ender, or My Library (kidding) owns
+  // the `$` variable.
+  Backbone.$ = root.jQuery || root.Zepto || root.ender || root.$;
+
+  // Runs Backbone.js in *noConflict* mode, returning the `Backbone` variable
+  // to its previous owner. Returns a reference to this Backbone object.
+  Backbone.noConflict = function() {
+    root.Backbone = previousBackbone;
+    return this;
+  };
+
+  // Turn on `emulateHTTP` to support legacy HTTP servers. Setting this option
+  // will fake `"PUT"` and `"DELETE"` requests via the `_method` parameter and
+  // set a `X-Http-Method-Override` header.
+  Backbone.emulateHTTP = false;
+
+  // Turn on `emulateJSON` to support legacy servers that can't deal with direct
+  // `application/json` requests ... will encode the body as
+  // `application/x-www-form-urlencoded` instead and will send the model in a
+  // form param named `model`.
+  Backbone.emulateJSON = false;
+
+  // Backbone.Events
+  // ---------------
+
+  // A module that can be mixed in to *any object* in order to provide it with
+  // custom events. You may bind with `on` or remove with `off` callback
+  // functions to an event; `trigger`-ing an event fires all callbacks in
+  // succession.
+  //
+  //     var object = {};
+  //     _.extend(object, Backbone.Events);
+  //     object.on('expand', function(){ alert('expanded'); });
+  //     object.trigger('expand');
+  //
+  var Events = Backbone.Events = {
+
+    // Bind an event to a `callback` function. Passing `"all"` will bind
+    // the callback to all events fired.
+    on: function(name, callback, context) {
+      if (!eventsApi(this, 'on', name, [callback, context]) || !callback) return this;
+      this._events || (this._events = {});
+      var events = this._events[name] || (this._events[name] = []);
+      events.push({callback: callback, context: context, ctx: context || this});
+      return this;
+    },
+
+    // Bind an event to only be triggered a single time. After the first time
+    // the callback is invoked, it will be removed.
+    once: function(name, callback, context) {
+      if (!eventsApi(this, 'once', name, [callback, context]) || !callback) return this;
+      var self = this;
+      var once = _.once(function() {
+        self.off(name, once);
+        callback.apply(this, arguments);
+      });
+      once._callback = callback;
+      return this.on(name, once, context);
+    },
+
+    // Remove one or many callbacks. If `context` is null, removes all
+    // callbacks with that function. If `callback` is null, removes all
+    // callbacks for the event. If `name` is null, removes all bound
+    // callbacks for all events.
+    off: function(name, callback, context) {
+      var retain, ev, events, names, i, l, j, k;
+      if (!this._events || !eventsApi(this, 'off', name, [callback, context])) return this;
+      if (!name && !callback && !context) {
+        this._events = {};
+        return this;
+      }
+
+      names = name ? [name] : _.keys(this._events);
+      for (i = 0, l = names.length; i < l; i++) {
+        name = names[i];
+        if (events = this._events[name]) {
+          this._events[name] = retain = [];
+          if (callback || context) {
+            for (j = 0, k = events.length; j < k; j++) {
+              ev = events[j];
+              if ((callback && callback !== ev.callback && callback !== ev.callback._callback) ||
+                  (context && context !== ev.context)) {
+                retain.push(ev);
+              }
+            }
+          }
+          if (!retain.length) delete this._events[name];
+        }
+      }
+
+      return this;
+    },
+
+    // Trigger one or many events, firing all bound callbacks. Callbacks are
+    // passed the same arguments as `trigger` is, apart from the event name
+    // (unless you're listening on `"all"`, which will cause your callback to
+    // receive the true name of the event as the first argument).
+    trigger: function(name) {
+      if (!this._events) return this;
+      var args = slice.call(arguments, 1);
+      if (!eventsApi(this, 'trigger', name, args)) return this;
+      var events = this._events[name];
+      var allEvents = this._events.all;
+      if (events) triggerEvents(events, args);
+      if (allEvents) triggerEvents(allEvents, arguments);
+      return this;
+    },
+
+    // Tell this object to stop listening to either specific events ... or
+    // to every object it's currently listening to.
+    stopListening: function(obj, name, callback) {
+      var listeners = this._listeners;
+      if (!listeners) return this;
+      var deleteListener = !name && !callback;
+      if (typeof name === 'object') callback = this;
+      if (obj) (listeners = {})[obj._listenerId] = obj;
+      for (var id in listeners) {
+        listeners[id].off(name, callback, this);
+        if (deleteListener) delete this._listeners[id];
+      }
+      return this;
+    }
+
+  };
+
+  // Regular expression used to split event strings.
+  var eventSplitter = /\s+/;
+
+  // Implement fancy features of the Events API such as multiple event
+  // names `"change blur"` and jQuery-style event maps `{change: action}`
+  // in terms of the existing API.
+  var eventsApi = function(obj, action, name, rest) {
+    if (!name) return true;
+
+    // Handle event maps.
+    if (typeof name === 'object') {
+      for (var key in name) {
+        obj[action].apply(obj, [key, name[key]].concat(rest));
+      }
+      return false;
+    }
+
+    // Handle space separated event names.
+    if (eventSplitter.test(name)) {
+      var names = name.split(eventSplitter);
+      for (var i = 0, l = names.length; i < l; i++) {
+        obj[action].apply(obj, [names[i]].concat(rest));
+      }
+      return false;
+    }
+
+    return true;
+  };
+
+  // A difficult-to-believe, but optimized internal dispatch function for
+  // triggering events. Tries to keep the usual cases speedy (most internal
+  // Backbone events have 3 arguments).
+  var triggerEvents = function(events, args) {
+    var ev, i = -1, l = events.length, a1 = args[0], a2 = args[1], a3 = args[2];
+    switch (args.length) {
+      case 0: while (++i < l) (ev = events[i]).callback.call(ev.ctx); return;
+      case 1: while (++i < l) (ev = events[i]).callback.call(ev.ctx, a1); return;
+      case 2: while (++i < l) (ev = events[i]).callback.call(ev.ctx, a1, a2); return;
+      case 3: while (++i < l) (ev = events[i]).callback.call(ev.ctx, a1, a2, a3); return;
+      default: while (++i < l) (ev = events[i]).callback.apply(ev.ctx, args);
+    }
+  };
+
+  var listenMethods = {listenTo: 'on', listenToOnce: 'once'};
+
+  // Inversion-of-control versions of `on` and `once`. Tell *this* object to
+  // listen to an event in another object ... keeping track of what it's
+  // listening to.
+  _.each(listenMethods, function(implementation, method) {
+    Events[method] = function(obj, name, callback) {
+      var listeners = this._listeners || (this._listeners = {});
+      var id = obj._listenerId || (obj._listenerId = _.uniqueId('l'));
+      listeners[id] = obj;
+      if (typeof name === 'object') callback = this;
+      obj[implementation](name, callback, this);
+      return this;
+    };
+  });
+
+  // Aliases for backwards compatibility.
+  Events.bind   = Events.on;
+  Events.unbind = Events.off;
+
+  // Allow the `Backbone` object to serve as a global event bus, for folks who
+  // want global "pubsub" in a convenient place.
+  _.extend(Backbone, Events);
+
+  // Backbone.Model
+  // --------------
+
+  // Backbone **Models** are the basic data object in the framework --
+  // frequently representing a row in a table in a database on your server.
+  // A discrete chunk of data and a bunch of useful, related methods for
+  // performing computations and transformations on that data.
+
+  // Create a new model with the specified attributes. A client id (`cid`)
+  // is automatically generated and assigned for you.
+  var Model = Backbone.Model = function(attributes, options) {
+    var defaults;
+    var attrs = attributes || {};
+    options || (options = {});
+    this.cid = _.uniqueId('c');
+    this.attributes = {};
+    _.extend(this, _.pick(options, modelOptions));
+    if (options.parse) attrs = this.parse(attrs, options) || {};
+    if (defaults = _.result(this, 'defaults')) {
+      attrs = _.defaults({}, attrs, defaults);
+    }
+    this.set(attrs, options);
+    this.changed = {};
+    this.initialize.apply(this, arguments);
+  };
+
+  // A list of options to be attached directly to the model, if provided.
+  var modelOptions = ['url', 'urlRoot', 'collection'];
+
+  // Attach all inheritable methods to the Model prototype.
+  _.extend(Model.prototype, Events, {
+
+    // A hash of attributes whose current and previous value differ.
+    changed: null,
+
+    // The value returned during the last failed validation.
+    validationError: null,
+
+    // The default name for the JSON `id` attribute is `"id"`. MongoDB and
+    // CouchDB users may want to set this to `"_id"`.
+    idAttribute: 'id',
+
+    // Initialize is an empty function by default. Override it with your own
+    // initialization logic.
+    initialize: function(){},
+
+    // Return a copy of the model's `attributes` object.
+    toJSON: function(options) {
+      return _.clone(this.attributes);
+    },
+
+    // Proxy `Backbone.sync` by default -- but override this if you need
+    // custom syncing semantics for *this* particular model.
+    sync: function() {
+      return Backbone.sync.apply(this, arguments);
+    },
+
+    // Get the value of an attribute.
+    get: function(attr) {
+      return this.attributes[attr];
+    },
+
+    // Get the HTML-escaped value of an attribute.
+    escape: function(attr) {
+      return _.escape(this.get(attr));
+    },
+
+    // Returns `true` if the attribute contains a value that is not null
+    // or undefined.
+    has: function(attr) {
+      return this.get(attr) != null;
+    },
+
+    // Set a hash of model attributes on the object, firing `"change"`. This is
+    // the core primitive operation of a model, updating the data and notifying
+    // anyone who needs to know about the change in state. The heart of the beast.
+    set: function(key, val, options) {
+      var attr, attrs, unset, changes, silent, changing, prev, current;
+      if (key == null) return this;
+
+      // Handle both `"key", value` and `{key: value}` -style arguments.
+      if (typeof key === 'object') {
+        attrs = key;
+        options = val;
+      } else {
+        (attrs = {})[key] = val;
+      }
+
+      options || (options = {});
+
+      // Run validation.
+      if (!this._validate(attrs, options)) return false;
+
+      // Extract attributes and options.
+      unset           = options.unset;
+      silent          = options.silent;
+      changes         = [];
+      changing        = this._changing;
+      this._changing  = true;
+
+      if (!changing) {
+        this._previousAttributes = _.clone(this.attributes);
+        this.changed = {};
+      }
+      current = this.attributes, prev = this._previousAttributes;
+
+      // Check for changes of `id`.
+      if (this.idAttribute in attrs) this.id = attrs[this.idAttribute];
+
+      // For each `set` attribute, update or delete the current value.
+      for (attr in attrs) {
+        val = attrs[attr];
+        if (!_.isEqual(current[attr], val)) changes.push(attr);
+        if (!_.isEqual(prev[attr], val)) {
+          this.changed[attr] = val;
+        } else {
+          delete this.changed[attr];
+        }
+        unset ? delete current[attr] : current[attr] = val;
+      }
+
+      // Trigger all relevant attribute changes.
+      if (!silent) {
+        if (changes.length) this._pending = true;
+        for (var i = 0, l = changes.length; i < l; i++) {
+          this.trigger('change:' + changes[i], this, current[changes[i]], options);
+        }
+      }
+
+      // You might be wondering why there's a `while` loop here. Changes can
+      // be recursively nested within `"change"` events.
+      if (changing) return this;
+      if (!silent) {
+        while (this._pending) {
+          this._pending = false;
+          this.trigger('change', this, options);
+        }
+      }
+      this._pending = false;
+      this._changing = false;
+      return this;
+    },
+
+    // Remove an attribute from the model, firing `"change"`. `unset` is a noop
+    // if the attribute doesn't exist.
+    unset: function(attr, options) {
+      return this.set(attr, void 0, _.extend({}, options, {unset: true}));
+    },
+
+    // Clear all attributes on the model, firing `"change"`.
+    clear: function(options) {
+      var attrs = {};
+      for (var key in this.attributes) attrs[key] = void 0;
+      return this.set(attrs, _.extend({}, options, {unset: true}));
+    },
+
+    // Determine if the model has changed since the last `"change"` event.
+    // If you specify an attribute name, determine if that attribute has changed.
+    hasChanged: function(attr) {
+      if (attr == null) return !_.isEmpty(this.changed);
+      return _.has(this.changed, attr);
+    },
+
+    // Return an object containing all the attributes that have changed, or
+    // false if there are no changed attributes. Useful for determining what
+    // parts of a view need to be updated and/or what attributes need to be
+    // persisted to the server. Unset attributes will be set to undefined.
+    // You can also pass an attributes object to diff against the model,
+    // determining if there *would be* a change.
+    changedAttributes: function(diff) {
+      if (!diff) return this.hasChanged() ? _.clone(this.changed) : false;
+      var val, changed = false;
+      var old = this._changing ? this._previousAttributes : this.attributes;
+      for (var attr in diff) {
+        if (_.isEqual(old[attr], (val = diff[attr]))) continue;
+        (changed || (changed = {}))[attr] = val;
+      }
+      return changed;
+    },
+
+    // Get the previous value of an attribute, recorded at the time the last
+    // `"change"` event was fired.
+    previous: function(attr) {
+      if (attr == null || !this._previousAttributes) return null;
+      return this._previousAttributes[attr];
+    },
+
+    // Get all of the attributes of the model at the time of the previous
+    // `"change"` event.
+    previousAttributes: function() {
+      return _.clone(this._previousAttributes);
+    },
+
+    // Fetch the model from the server. If the server's representation of the
+    // model differs from its current attributes, they will be overridden,
+    // triggering a `"change"` event.
+    fetch: function(options) {
+      options = options ? _.clone(options) : {};
+      if (options.parse === void 0) options.parse = true;
+      var model = this;
+      var success = options.success;
+      options.success = function(resp) {
+        if (!model.set(model.parse(resp, options), options)) return false;
+        if (success) success(model, resp, options);
+        model.trigger('sync', model, resp, options);
+      };
+      wrapError(this, options);
+      return this.sync('read', this, options);
+    },
+
+    // Set a hash of model attributes, and sync the model to the server.
+    // If the server returns an attributes hash that differs, the model's
+    // state will be `set` again.
+    save: function(key, val, options) {
+      var attrs, method, xhr, attributes = this.attributes;
+
+      // Handle both `"key", value` and `{key: value}` -style arguments.
+      if (key == null || typeof key === 'object') {
+        attrs = key;
+        options = val;
+      } else {
+        (attrs = {})[key] = val;
+      }
+
+      // If we're not waiting and attributes exist, save acts as `set(attr).save(null, opts)`.
+      if (attrs && (!options || !options.wait) && !this.set(attrs, options)) return false;
+
+      options = _.extend({validate: true}, options);
+
+      // Do not persist invalid models.
+      if (!this._validate(attrs, options)) return false;
+
+      // Set temporary attributes if `{wait: true}`.
+      if (attrs && options.wait) {
+        this.attributes = _.extend({}, attributes, attrs);
+      }
+
+      // After a successful server-side save, the client is (optionally)
+      // updated with the server-side state.
+      if (options.parse === void 0) options.parse = true;
+      var model = this;
+      var success = options.success;
+      options.success = function(resp) {
+        // Ensure attributes are restored during synchronous saves.
+        model.attributes = attributes;
+        var serverAttrs = model.parse(resp, options);
+        if (options.wait) serverAttrs = _.extend(attrs || {}, serverAttrs);
+        if (_.isObject(serverAttrs) && !model.set(serverAttrs, options)) {
+          return false;
+        }
+        if (success) success(model, resp, options);
+        model.trigger('sync', model, resp, options);
+      };
+      wrapError(this, options);
+
+      method = this.isNew() ? 'create' : (options.patch ? 'patch' : 'update');
+      if (method === 'patch') options.attrs = attrs;
+      xhr = this.sync(method, this, options);
+
+      // Restore attributes.
+      if (attrs && options.wait) this.attributes = attributes;
+
+      return xhr;
+    },
+
+    // Destroy this model on the server if it was already persisted.
+    // Optimistically removes the model from its collection, if it has one.
+    // If `wait: true` is passed, waits for the server to respond before removal.
+    destroy: function(options) {
+      options = options ? _.clone(options) : {};
+      var model = this;
+      var success = options.success;
+
+      var destroy = function() {
+        model.trigger('destroy', model, model.collection, options);
+      };
+
+      options.success = function(resp) {
+        if (options.wait || model.isNew()) destroy();
+        if (success) success(model, resp, options);
+        if (!model.isNew()) model.trigger('sync', model, resp, options);
+      };
+
+      if (this.isNew()) {
+        options.success();
+        return false;
+      }
+      wrapError(this, options);
+
+      var xhr = this.sync('delete', this, options);
+      if (!options.wait) destroy();
+      return xhr;
+    },
+
+    // Default URL for the model's representation on the server -- if you're
+    // using Backbone's restful methods, override this to change the endpoint
+    // that will be called.
+    url: function() {
+      var base = _.result(this, 'urlRoot') || _.result(this.collection, 'url') || urlError();
+      if (this.isNew()) return base;
+      return base + (base.charAt(base.length - 1) === '/' ? '' : '/') + encodeURIComponent(this.id);
+    },
+
+    // **parse** converts a response into the hash of attributes to be `set` on
+    // the model. The default implementation is just to pass the response along.
+    parse: function(resp, options) {
+      return resp;
+    },
+
+    // Create a new model with identical attributes to this one.
+    clone: function() {
+      return new this.constructor(this.attributes);
+    },
+
+    // A model is new if it has never been saved to the server, and lacks an id.
+    isNew: function() {
+      return this.id == null;
+    },
+
+    // Check if the model is currently in a valid state.
+    isValid: function(options) {
+      return this._validate({}, _.extend(options || {}, { validate: true }));
+    },
+
+    // Run validation against the next complete set of model attributes,
+    // returning `true` if all is well. Otherwise, fire an `"invalid"` event.
+    _validate: function(attrs, options) {
+      if (!options.validate || !this.validate) return true;
+      attrs = _.extend({}, this.attributes, attrs);
+      var error = this.validationError = this.validate(attrs, options) || null;
+      if (!error) return true;
+      this.trigger('invalid', this, error, _.extend(options || {}, {validationError: error}));
+      return false;
+    }
+
+  });
+
+  // Underscore methods that we want to implement on the Model.
+  var modelMethods = ['keys', 'values', 'pairs', 'invert', 'pick', 'omit'];
+
+  // Mix in each Underscore method as a proxy to `Model#attributes`.
+  _.each(modelMethods, function(method) {
+    Model.prototype[method] = function() {
+      var args = slice.call(arguments);
+      args.unshift(this.attributes);
+      return _[method].apply(_, args);
+    };
+  });
+
+  // Backbone.Collection
+  // -------------------
+
+  // If models tend to represent a single row of data, a Backbone Collection is
+  // more analagous to a table full of data ... or a small slice or page of that
+  // table, or a collection of rows that belong together for a particular reason
+  // -- all of the messages in this particular folder, all of the documents
+  // belonging to this particular author, and so on. Collections maintain
+  // indexes of their models, both in order, and for lookup by `id`.
+
+  // Create a new **Collection**, perhaps to contain a specific type of `model`.
+  // If a `comparator` is specified, the Collection will maintain
+  // its models in sort order, as they're added and removed.
+  var Collection = Backbone.Collection = function(models, options) {
+    options || (options = {});
+    if (options.url) this.url = options.url;
+    if (options.model) this.model = options.model;
+    if (options.comparator !== void 0) this.comparator = options.comparator;
+    this._reset();
+    this.initialize.apply(this, arguments);
+    if (models) this.reset(models, _.extend({silent: true}, options));
+  };
+
+  // Default options for `Collection#set`.
+  var setOptions = {add: true, remove: true, merge: true};
+  var addOptions = {add: true, merge: false, remove: false};
+
+  // Define the Collection's inheritable methods.
+  _.extend(Collection.prototype, Events, {
+
+    // The default model for a collection is just a **Backbone.Model**.
+    // This should be overridden in most cases.
+    model: Model,
+
+    // Initialize is an empty function by default. Override it with your own
+    // initialization logic.
+    initialize: function(){},
+
+    // The JSON representation of a Collection is an array of the
+    // models' attributes.
+    toJSON: function(options) {
+      return this.map(function(model){ return model.toJSON(options); });
+    },
+
+    // Proxy `Backbone.sync` by default.
+    sync: function() {
+      return Backbone.sync.apply(this, arguments);
+    },
+
+    // Add a model, or list of models to the set.
+    add: function(models, options) {
+      return this.set(models, _.defaults(options || {}, addOptions));
+    },
+
+    // Remove a model, or a list of models from the set.
+    remove: function(models, options) {
+      models = _.isArray(models) ? models.slice() : [models];
+      options || (options = {});
+      var i, l, index, model;
+      for (i = 0, l = models.length; i < l; i++) {
+        model = this.get(models[i]);
+        if (!model) continue;
+        delete this._byId[model.id];
+        delete this._byId[model.cid];
+        index = this.indexOf(model);
+        this.models.splice(index, 1);
+        this.length--;
+        if (!options.silent) {
+          options.index = index;
+          model.trigger('remove', model, this, options);
+        }
+        this._removeReference(model);
+      }
+      return this;
+    },
+
+    // Update a collection by `set`-ing a new list of models, adding new ones,
+    // removing models that are no longer present, and merging models that
+    // already exist in the collection, as necessary. Similar to **Model#set**,
+    // the core operation for updating the data contained by the collection.
+    set: function(models, options) {
+      options = _.defaults(options || {}, setOptions);
+      if (options.parse) models = this.parse(models, options);
+      if (!_.isArray(models)) models = models ? [models] : [];
+      var i, l, model, attrs, existing, sort;
+      var at = options.at;
+      var sortable = this.comparator && (at == null) && options.sort !== false;
+      var sortAttr = _.isString(this.comparator) ? this.comparator : null;
+      var toAdd = [], toRemove = [], modelMap = {};
+
+      // Turn bare objects into model references, and prevent invalid models
+      // from being added.
+      for (i = 0, l = models.length; i < l; i++) {
+        if (!(model = this._prepareModel(models[i], options))) continue;
+
+        // If a duplicate is found, prevent it from being added and
+        // optionally merge it into the existing model.
+        if (existing = this.get(model)) {
+          if (options.remove) modelMap[existing.cid] = true;
+          if (options.merge) {
+            existing.set(model.attributes, options);
+            if (sortable && !sort && existing.hasChanged(sortAttr)) sort = true;
+          }
+
+        // This is a new model, push it to the `toAdd` list.
+        } else if (options.add) {
+          toAdd.push(model);
+
+          // Listen to added models' events, and index models for lookup by
+          // `id` and by `cid`.
+          model.on('all', this._onModelEvent, this);
+          this._byId[model.cid] = model;
+          if (model.id != null) this._byId[model.id] = model;
+        }
+      }
+
+      // Remove nonexistent models if appropriate.
+      if (options.remove) {
+        for (i = 0, l = this.length; i < l; ++i) {
+          if (!modelMap[(model = this.models[i]).cid]) toRemove.push(model);
+        }
+        if (toRemove.length) this.remove(toRemove, options);
+      }
+
+      // See if sorting is needed, update `length` and splice in new models.
+      if (toAdd.length) {
+        if (sortable) sort = true;
+        this.length += toAdd.length;
+        if (at != null) {
+          splice.apply(this.models, [at, 0].concat(toAdd));
+        } else {
+          push.apply(this.models, toAdd);
+        }
+      }
+
+      // Silently sort the collection if appropriate.
+      if (sort) this.sort({silent: true});
+
+      if (options.silent) return this;
+
+      // Trigger `add` events.
+      for (i = 0, l = toAdd.length; i < l; i++) {
+        (model = toAdd[i]).trigger('add', model, this, options);
+      }
+
+      // Trigger `sort` if the collection was sorted.
+      if (sort) this.trigger('sort', this, options);
+      return this;
+    },
+
+    // When you have more items than you want to add or remove individually,
+    // you can reset the entire set with a new list of models, without firing
+    // any granular `add` or `remove` events. Fires `reset` when finished.
+    // Useful for bulk operations and optimizations.
+    reset: function(models, options) {
+      options || (options = {});
+      for (var i = 0, l = this.models.length; i < l; i++) {
+        this._removeReference(this.models[i]);
+      }
+      options.previousModels = this.models;
+      this._reset();
+      this.add(models, _.extend({silent: true}, options));
+      if (!options.silent) this.trigger('reset', this, options);
+      return this;
+    },
+
+    // Add a model to the end of the collection.
+    push: function(model, options) {
+      model = this._prepareModel(model, options);
+      this.add(model, _.extend({at: this.length}, options));
+      return model;
+    },
+
+    // Remove a model from the end of the collection.
+    pop: function(options) {
+      var model = this.at(this.length - 1);
+      this.remove(model, options);
+      return model;
+    },
+
+    // Add a model to the beginning of the collection.
+    unshift: function(model, options) {
+      model = this._prepareModel(model, options);
+      this.add(model, _.extend({at: 0}, options));
+      return model;
+    },
+
+    // Remove a model from the beginning of the collection.
+    shift: function(options) {
+      var model = this.at(0);
+      this.remove(model, options);
+      return model;
+    },
+
+    // Slice out a sub-array of models from the collection.
+    slice: function(begin, end) {
+      return this.models.slice(begin, end);
+    },
+
+    // Get a model from the set by id.
+    get: function(obj) {
+      if (obj == null) return void 0;
+      return this._byId[obj.id != null ? obj.id : obj.cid || obj];
+    },
+
+    // Get the model at the given index.
+    at: function(index) {
+      return this.models[index];
+    },
+
+    // Return models with matching attributes. Useful for simple cases of
+    // `filter`.
+    where: function(attrs, first) {
+      if (_.isEmpty(attrs)) return first ? void 0 : [];
+      return this[first ? 'find' : 'filter'](function(model) {
+        for (var key in attrs) {
+          if (attrs[key] !== model.get(key)) return false;
+        }
+        return true;
+      });
+    },
+
+    // Return the first model with matching attributes. Useful for simple cases
+    // of `find`.
+    findWhere: function(attrs) {
+      return this.where(attrs, true);
+    },
+
+    // Force the collection to re-sort itself. You don't need to call this under
+    // normal circumstances, as the set will maintain sort order as each item
+    // is added.
+    sort: function(options) {
+      if (!this.comparator) throw new Error('Cannot sort a set without a comparator');
+      options || (options = {});
+
+      // Run sort based on type of `comparator`.
+      if (_.isString(this.comparator) || this.comparator.length === 1) {
+        this.models = this.sortBy(this.comparator, this);
+      } else {
+        this.models.sort(_.bind(this.comparator, this));
+      }
+
+      if (!options.silent) this.trigger('sort', this, options);
+      return this;
+    },
+
+    // Figure out the smallest index at which a model should be inserted so as
+    // to maintain order.
+    sortedIndex: function(model, value, context) {
+      value || (value = this.comparator);
+      var iterator = _.isFunction(value) ? value : function(model) {
+        return model.get(value);
+      };
+      return _.sortedIndex(this.models, model, iterator, context);
+    },
+
+    // Pluck an attribute from each model in the collection.
+    pluck: function(attr) {
+      return _.invoke(this.models, 'get', attr);
+    },
+
+    // Fetch the default set of models for this collection, resetting the
+    // collection when they arrive. If `reset: true` is passed, the response
+    // data will be passed through the `reset` method instead of `set`.
+    fetch: function(options) {
+      options = options ? _.clone(options) : {};
+      if (options.parse === void 0) options.parse = true;
+      var success = options.success;
+      var collection = this;
+      options.success = function(resp) {
+        var method = options.reset ? 'reset' : 'set';
+        collection[method](resp, options);
+        if (success) success(collection, resp, options);
+        collection.trigger('sync', collection, resp, options);
+      };
+      wrapError(this, options);
+      return this.sync('read', this, options);
+    },
+
+    // Create a new instance of a model in this collection. Add the model to the
+    // collection immediately, unless `wait: true` is passed, in which case we
+    // wait for the server to agree.
+    create: function(model, options) {
+      options = options ? _.clone(options) : {};
+      if (!(model = this._prepareModel(model, options))) return false;
+      if (!options.wait) this.add(model, options);
+      var collection = this;
+      var success = options.success;
+      options.success = function(resp) {
+        if (options.wait) collection.add(model, options);
+        if (success) success(model, resp, options);
+      };
+      model.save(null, options);
+      return model;
+    },
+
+    // **parse** converts a response into a list of models to be added to the
+    // collection. The default implementation is just to pass it through.
+    parse: function(resp, options) {
+      return resp;
+    },
+
+    // Create a new collection with an identical list of models as this one.
+    clone: function() {
+      return new this.constructor(this.models);
+    },
+
+    // Private method to reset all internal state. Called when the collection
+    // is first initialized or reset.
+    _reset: function() {
+      this.length = 0;
+      this.models = [];
+      this._byId  = {};
+    },
+
+    // Prepare a hash of attributes (or other model) to be added to this
+    // collection.
+    _prepareModel: function(attrs, options) {
+      if (attrs instanceof Model) {
+        if (!attrs.collection) attrs.collection = this;
+        return attrs;
+      }
+      options || (options = {});
+      options.collection = this;
+      var model = new this.model(attrs, options);
+      if (!model._validate(attrs, options)) {
+        this.trigger('invalid', this, attrs, options);
+        return false;
+      }
+      return model;
+    },
+
+    // Internal method to sever a model's ties to a collection.
+    _removeReference: function(model) {
+      if (this === model.collection) delete model.collection;
+      model.off('all', this._onModelEvent, this);
+    },
+
+    // Internal method called every time a model in the set fires an event.
+    // Sets need to update their indexes when models change ids. All other
+    // events simply proxy through. "add" and "remove" events that originate
+    // in other collections are ignored.
+    _onModelEvent: function(event, model, collection, options) {
+      if ((event === 'add' || event === 'remove') && collection !== this) return;
+      if (event === 'destroy') this.remove(model, options);
+      if (model && event === 'change:' + model.idAttribute) {
+        delete this._byId[model.previous(model.idAttribute)];
+        if (model.id != null) this._byId[model.id] = model;
+      }
+      this.trigger.apply(this, arguments);
+    }
+
+  });
+
+  // Underscore methods that we want to implement on the Collection.
+  // 90% of the core usefulness of Backbone Collections is actually implemented
+  // right here:
+  var methods = ['forEach', 'each', 'map', 'collect', 'reduce', 'foldl',
+    'inject', 'reduceRight', 'foldr', 'find', 'detect', 'filter', 'select',
+    'reject', 'every', 'all', 'some', 'any', 'include', 'contains', 'invoke',
+    'max', 'min', 'toArray', 'size', 'first', 'head', 'take', 'initial', 'rest',
+    'tail', 'drop', 'last', 'without', 'indexOf', 'shuffle', 'lastIndexOf',
+    'isEmpty', 'chain'];
+
+  // Mix in each Underscore method as a proxy to `Collection#models`.
+  _.each(methods, function(method) {
+    Collection.prototype[method] = function() {
+      var args = slice.call(arguments);
+      args.unshift(this.models);
+      return _[method].apply(_, args);
+    };
+  });
+
+  // Underscore methods that take a property name as an argument.
+  var attributeMethods = ['groupBy', 'countBy', 'sortBy'];
+
+  // Use attributes instead of properties.
+  _.each(attributeMethods, function(method) {
+    Collection.prototype[method] = function(value, context) {
+      var iterator = _.isFunction(value) ? value : function(model) {
+        return model.get(value);
+      };
+      return _[method](this.models, iterator, context);
+    };
+  });
+
+  // Backbone.View
+  // -------------
+
+  // Backbone Views are almost more convention than they are actual code. A View
+  // is simply a JavaScript object that represents a logical chunk of UI in the
+  // DOM. This might be a single item, an entire list, a sidebar or panel, or
+  // even the surrounding frame which wraps your whole app. Defining a chunk of
+  // UI as a **View** allows you to define your DOM events declaratively, without
+  // having to worry about render order ... and makes it easy for the view to
+  // react to specific changes in the state of your models.
+
+  // Creating a Backbone.View creates its initial element outside of the DOM,
+  // if an existing element is not provided...
+  var View = Backbone.View = function(options) {
+    this.cid = _.uniqueId('view');
+    this._configure(options || {});
+    this._ensureElement();
+    this.initialize.apply(this, arguments);
+    this.delegateEvents();
+  };
+
+  // Cached regex to split keys for `delegate`.
+  var delegateEventSplitter = /^(\S+)\s*(.*)$/;
+
+  // List of view options to be merged as properties.
+  var viewOptions = ['model', 'collection', 'el', 'id', 'attributes', 'className', 'tagName', 'events'];
+
+  // Set up all inheritable **Backbone.View** properties and methods.
+  _.extend(View.prototype, Events, {
+
+    // The default `tagName` of a View's element is `"div"`.
+    tagName: 'div',
+
+    // jQuery delegate for element lookup, scoped to DOM elements within the
+    // current view. This should be prefered to global lookups where possible.
+    $: function(selector) {
+      return this.$el.find(selector);
+    },
+
+    // Initialize is an empty function by default. Override it with your own
+    // initialization logic.
+    initialize: function(){},
+
+    // **render** is the core function that your view should override, in order
+    // to populate its element (`this.el`), with the appropriate HTML. The
+    // convention is for **render** to always return `this`.
+    render: function() {
+      return this;
+    },
+
+    // Remove this view by taking the element out of the DOM, and removing any
+    // applicable Backbone.Events listeners.
+    remove: function() {
+      this.$el.remove();
+      this.stopListening();
+      return this;
+    },
+
+    // Change the view's element (`this.el` property), including event
+    // re-delegation.
+    setElement: function(element, delegate) {
+      if (this.$el) this.undelegateEvents();
+      this.$el = element instanceof Backbone.$ ? element : Backbone.$(element);
+      this.el = this.$el[0];
+      if (delegate !== false) this.delegateEvents();
+      return this;
+    },
+
+    // Set callbacks, where `this.events` is a hash of
+    //
+    // *{"event selector": "callback"}*
+    //
+    //     {
+    //       'mousedown .title':  'edit',
+    //       'click .button':     'save'
+    //       'click .open':       function(e) { ... }
+    //     }
+    //
+    // pairs. Callbacks will be bound to the view, with `this` set properly.
+    // Uses event delegation for efficiency.
+    // Omitting the selector binds the event to `this.el`.
+    // This only works for delegate-able events: not `focus`, `blur`, and
+    // not `change`, `submit`, and `reset` in Internet Explorer.
+    delegateEvents: function(events) {
+      if (!(events || (events = _.result(this, 'events')))) return this;
+      this.undelegateEvents();
+      for (var key in events) {
+        var method = events[key];
+        if (!_.isFunction(method)) method = this[events[key]];
+        if (!method) continue;
+
+        var match = key.match(delegateEventSplitter);
+        var eventName = match[1], selector = match[2];
+        method = _.bind(method, this);
+        eventName += '.delegateEvents' + this.cid;
+        if (selector === '') {
+          this.$el.on(eventName, method);
+        } else {
+          this.$el.on(eventName, selector, method);
+        }
+      }
+      return this;
+    },
+
+    // Clears all callbacks previously bound to the view with `delegateEvents`.
+    // You usually don't need to use this, but may wish to if you have multiple
+    // Backbone views attached to the same DOM element.
+    undelegateEvents: function() {
+      this.$el.off('.delegateEvents' + this.cid);
+      return this;
+    },
+
+    // Performs the initial configuration of a View with a set of options.
+    // Keys with special meaning *(e.g. model, collection, id, className)* are
+    // attached directly to the view.  See `viewOptions` for an exhaustive
+    // list.
+    _configure: function(options) {
+      if (this.options) options = _.extend({}, _.result(this, 'options'), options);
+      _.extend(this, _.pick(options, viewOptions));
+      this.options = options;
+    },
+
+    // Ensure that the View has a DOM element to render into.
+    // If `this.el` is a string, pass it through `$()`, take the first
+    // matching element, and re-assign it to `el`. Otherwise, create
+    // an element from the `id`, `className` and `tagName` properties.
+    _ensureElement: function() {
+      if (!this.el) {
+        var attrs = _.extend({}, _.result(this, 'attributes'));
+        if (this.id) attrs.id = _.result(this, 'id');
+        if (this.className) attrs['class'] = _.result(this, 'className');
+        var $el = Backbone.$('<' + _.result(this, 'tagName') + '>').attr(attrs);
+        this.setElement($el, false);
+      } else {
+        this.setElement(_.result(this, 'el'), false);
+      }
+    }
+
+  });
+
+  // Backbone.sync
+  // -------------
+
+  // Override this function to change the manner in which Backbone persists
+  // models to the server. You will be passed the type of request, and the
+  // model in question. By default, makes a RESTful Ajax request
+  // to the model's `url()`. Some possible customizations could be:
+  //
+  // * Use `setTimeout` to batch rapid-fire updates into a single request.
+  // * Send up the models as XML instead of JSON.
+  // * Persist models via WebSockets instead of Ajax.
+  //
+  // Turn on `Backbone.emulateHTTP` in order to send `PUT` and `DELETE` requests
+  // as `POST`, with a `_method` parameter containing the true HTTP method,
+  // as well as all requests with the body as `application/x-www-form-urlencoded`
+  // instead of `application/json` with the model in a param named `model`.
+  // Useful when interfacing with server-side languages like **PHP** that make
+  // it difficult to read the body of `PUT` requests.
+  Backbone.sync = function(method, model, options) {
+    var type = methodMap[method];
+
+    // Default options, unless specified.
+    _.defaults(options || (options = {}), {
+      emulateHTTP: Backbone.emulateHTTP,
+      emulateJSON: Backbone.emulateJSON
+    });
+
+    // Default JSON-request options.
+    var params = {type: type, dataType: 'json'};
+
+    // Ensure that we have a URL.
+    if (!options.url) {
+      params.url = _.result(model, 'url') || urlError();
+    }
+
+    // Ensure that we have the appropriate request data.
+    if (options.data == null && model && (method === 'create' || method === 'update' || method === 'patch')) {
+      params.contentType = 'application/json';
+      params.data = JSON.stringify(options.attrs || model.toJSON(options));
+    }
+
+    // For older servers, emulate JSON by encoding the request into an HTML-form.
+    if (options.emulateJSON) {
+      params.contentType = 'application/x-www-form-urlencoded';
+      params.data = params.data ? {model: params.data} : {};
+    }
+
+    // For older servers, emulate HTTP by mimicking the HTTP method with `_method`
+    // And an `X-HTTP-Method-Override` header.
+    if (options.emulateHTTP && (type === 'PUT' || type === 'DELETE' || type === 'PATCH')) {
+      params.type = 'POST';
+      if (options.emulateJSON) params.data._method = type;
+      var beforeSend = options.beforeSend;
+      options.beforeSend = function(xhr) {
+        xhr.setRequestHeader('X-HTTP-Method-Override', type);
+        if (beforeSend) return beforeSend.apply(this, arguments);
+      };
+    }
+
+    // Don't process data on a non-GET request.
+    if (params.type !== 'GET' && !options.emulateJSON) {
+      params.processData = false;
+    }
+
+    // If we're sending a `PATCH` request, and we're in an old Internet Explorer
+    // that still has ActiveX enabled by default, override jQuery to use that
+    // for XHR instead. Remove this line when jQuery supports `PATCH` on IE8.
+    if (params.type === 'PATCH' && window.ActiveXObject &&
+          !(window.external && window.external.msActiveXFilteringEnabled)) {
+      params.xhr = function() {
+        return new ActiveXObject("Microsoft.XMLHTTP");
+      };
+    }
+
+    // Make the request, allowing the user to override any Ajax options.
+    var xhr = options.xhr = Backbone.ajax(_.extend(params, options));
+    model.trigger('request', model, xhr, options);
+    return xhr;
+  };
+
+  // Map from CRUD to HTTP for our default `Backbone.sync` implementation.
+  var methodMap = {
+    'create': 'POST',
+    'update': 'PUT',
+    'patch':  'PATCH',
+    'delete': 'DELETE',
+    'read':   'GET'
+  };
+
+  // Set the default implementation of `Backbone.ajax` to proxy through to `$`.
+  // Override this if you'd like to use a different library.
+  Backbone.ajax = function() {
+    return Backbone.$.ajax.apply(Backbone.$, arguments);
+  };
+
+  // Backbone.Router
+  // ---------------
+
+  // Routers map faux-URLs to actions, and fire events when routes are
+  // matched. Creating a new one sets its `routes` hash, if not set statically.
+  var Router = Backbone.Router = function(options) {
+    options || (options = {});
+    if (options.routes) this.routes = options.routes;
+    this._bindRoutes();
+    this.initialize.apply(this, arguments);
+  };
+
+  // Cached regular expressions for matching named param parts and splatted
+  // parts of route strings.
+  var optionalParam = /\((.*?)\)/g;
+  var namedParam    = /(\(\?)?:\w+/g;
+  var splatParam    = /\*\w+/g;
+  var escapeRegExp  = /[\-{}\[\]+?.,\\\^$|#\s]/g;
+
+  // Set up all inheritable **Backbone.Router** properties and methods.
+  _.extend(Router.prototype, Events, {
+
+    // Initialize is an empty function by default. Override it with your own
+    // initialization logic.
+    initialize: function(){},
+
+    // Manually bind a single named route to a callback. For example:
+    //
+    //     this.route('search/:query/p:num', 'search', function(query, num) {
+    //       ...
+    //     });
+    //
+    route: function(route, name, callback) {
+      if (!_.isRegExp(route)) route = this._routeToRegExp(route);
+      if (_.isFunction(name)) {
+        callback = name;
+        name = '';
+      }
+      if (!callback) callback = this[name];
+      var router = this;
+      Backbone.history.route(route, function(fragment) {
+        var args = router._extractParameters(route, fragment);
+        callback && callback.apply(router, args);
+        router.trigger.apply(router, ['route:' + name].concat(args));
+        router.trigger('route', name, args);
+        Backbone.history.trigger('route', router, name, args);
+      });
+      return this;
+    },
+
+    // Simple proxy to `Backbone.history` to save a fragment into the history.
+    navigate: function(fragment, options) {
+      Backbone.history.navigate(fragment, options);
+      return this;
+    },
+
+    // Bind all defined routes to `Backbone.history`. We have to reverse the
+    // order of the routes here to support behavior where the most general
+    // routes can be defined at the bottom of the route map.
+    _bindRoutes: function() {
+      if (!this.routes) return;
+      this.routes = _.result(this, 'routes');
+      var route, routes = _.keys(this.routes);
+      while ((route = routes.pop()) != null) {
+        this.route(route, this.routes[route]);
+      }
+    },
+
+    // Convert a route string into a regular expression, suitable for matching
+    // against the current location hash.
+    _routeToRegExp: function(route) {
+      route = route.replace(escapeRegExp, '\\$&')
+                   .replace(optionalParam, '(?:$1)?')
+                   .replace(namedParam, function(match, optional){
+                     return optional ? match : '([^\/]+)';
+                   })
+                   .replace(splatParam, '(.*?)');
+      return new RegExp('^' + route + '$');
+    },
+
+    // Given a route, and a URL fragment that it matches, return the array of
+    // extracted decoded parameters. Empty or unmatched parameters will be
+    // treated as `null` to normalize cross-browser behavior.
+    _extractParameters: function(route, fragment) {
+      var params = route.exec(fragment).slice(1);
+      return _.map(params, function(param) {
+        return param ? decodeURIComponent(param) : null;
+      });
+    }
+
+  });
+
+  // Backbone.History
+  // ----------------
+
+  // Handles cross-browser history management, based on either
+  // [pushState](http://diveintohtml5.info/history.html) and real URLs, or
+  // [onhashchange](https://developer.mozilla.org/en-US/docs/DOM/window.onhashchange)
+  // and URL fragments. If the browser supports neither (old IE, natch),
+  // falls back to polling.
+  var History = Backbone.History = function() {
+    this.handlers = [];
+    _.bindAll(this, 'checkUrl');
+
+    // Ensure that `History` can be used outside of the browser.
+    if (typeof window !== 'undefined') {
+      this.location = window.location;
+      this.history = window.history;
+    }
+  };
+
+  // Cached regex for stripping a leading hash/slash and trailing space.
+  var routeStripper = /^[#\/]|\s+$/g;
+
+  // Cached regex for stripping leading and trailing slashes.
+  var rootStripper = /^\/+|\/+$/g;
+
+  // Cached regex for detecting MSIE.
+  var isExplorer = /msie [\w.]+/;
+
+  // Cached regex for removing a trailing slash.
+  var trailingSlash = /\/$/;
+
+  // Has the history handling already been started?
+  History.started = false;
+
+  // Set up all inheritable **Backbone.History** properties and methods.
+  _.extend(History.prototype, Events, {
+
+    // The default interval to poll for hash changes, if necessary, is
+    // twenty times a second.
+    interval: 50,
+
+    // Gets the true hash value. Cannot use location.hash directly due to bug
+    // in Firefox where location.hash will always be decoded.
+    getHash: function(window) {
+      var match = (window || this).location.href.match(/#(.*)$/);
+      return match ? match[1] : '';
+    },
+
+    // Get the cross-browser normalized URL fragment, either from the URL,
+    // the hash, or the override.
+    getFragment: function(fragment, forcePushState) {
+      if (fragment == null) {
+        if (this._hasPushState || !this._wantsHashChange || forcePushState) {
+          fragment = this.location.pathname;
+          var root = this.root.replace(trailingSlash, '');
+          if (!fragment.indexOf(root)) fragment = fragment.substr(root.length);
+        } else {
+          fragment = this.getHash();
+        }
+      }
+      return fragment.replace(routeStripper, '');
+    },
+
+    // Start the hash change handling, returning `true` if the current URL matches
+    // an existing route, and `false` otherwise.
+    start: function(options) {
+      if (History.started) throw new Error("Backbone.history has already been started");
+      History.started = true;
+
+      // Figure out the initial configuration. Do we need an iframe?
+      // Is pushState desired ... is it available?
+      this.options          = _.extend({}, {root: '/'}, this.options, options);
+      this.root             = this.options.root;
+      this._wantsHashChange = this.options.hashChange !== false;
+      this._wantsPushState  = !!this.options.pushState;
+      this._hasPushState    = !!(this.options.pushState && this.history && this.history.pushState);
+      var fragment          = this.getFragment();
+      var docMode           = document.documentMode;
+      var oldIE             = (isExplorer.exec(navigator.userAgent.toLowerCase()) && (!docMode || docMode <= 7));
+
+      // Normalize root to always include a leading and trailing slash.
+      this.root = ('/' + this.root + '/').replace(rootStripper, '/');
+
+      if (oldIE && this._wantsHashChange) {
+        this.iframe = Backbone.$('<iframe src="javascript:0" tabindex="-1" />').hide().appendTo('body')[0].contentWindow;
+        this.navigate(fragment);
+      }
+
+      // Depending on whether we're using pushState or hashes, and whether
+      // 'onhashchange' is supported, determine how we check the URL state.
+      if (this._hasPushState) {
+        Backbone.$(window).on('popstate', this.checkUrl);
+      } else if (this._wantsHashChange && ('onhashchange' in window) && !oldIE) {
+        Backbone.$(window).on('hashchange', this.checkUrl);
+      } else if (this._wantsHashChange) {
+        this._checkUrlInterval = setInterval(this.checkUrl, this.interval);
+      }
+
+      // Determine if we need to change the base url, for a pushState link
+      // opened by a non-pushState browser.
+      this.fragment = fragment;
+      var loc = this.location;
+      var atRoot = loc.pathname.replace(/[^\/]$/, '$&/') === this.root;
+
+      // If we've started off with a route from a `pushState`-enabled browser,
+      // but we're currently in a browser that doesn't support it...
+      if (this._wantsHashChange && this._wantsPushState && !this._hasPushState && !atRoot) {
+        this.fragment = this.getFragment(null, true);
+        this.location.replace(this.root + this.location.search + '#' + this.fragment);
+        // Return immediately as browser will do redirect to new url
+        return true;
+
+      // Or if we've started out with a hash-based route, but we're currently
+      // in a browser where it could be `pushState`-based instead...
+      } else if (this._wantsPushState && this._hasPushState && atRoot && loc.hash) {
+        this.fragment = this.getHash().replace(routeStripper, '');
+        this.history.replaceState({}, document.title, this.root + this.fragment + loc.search);
+      }
+
+      if (!this.options.silent) return this.loadUrl();
+    },
+
+    // Disable Backbone.history, perhaps temporarily. Not useful in a real app,
+    // but possibly useful for unit testing Routers.
+    stop: function() {
+      Backbone.$(window).off('popstate', this.checkUrl).off('hashchange', this.checkUrl);
+      clearInterval(this._checkUrlInterval);
+      History.started = false;
+    },
+
+    // Add a route to be tested when the fragment changes. Routes added later
+    // may override previous routes.
+    route: function(route, callback) {
+      this.handlers.unshift({route: route, callback: callback});
+    },
+
+    // Checks the current URL to see if it has changed, and if it has,
+    // calls `loadUrl`, normalizing across the hidden iframe.
+    checkUrl: function(e) {
+      var current = this.getFragment();
+      if (current === this.fragment && this.iframe) {
+        current = this.getFragment(this.getHash(this.iframe));
+      }
+      if (current === this.fragment) return false;
+      if (this.iframe) this.navigate(current);
+      this.loadUrl() || this.loadUrl(this.getHash());
+    },
+
+    // Attempt to load the current URL fragment. If a route succeeds with a
+    // match, returns `true`. If no defined routes matches the fragment,
+    // returns `false`.
+    loadUrl: function(fragmentOverride) {
+      var fragment = this.fragment = this.getFragment(fragmentOverride);
+      var matched = _.any(this.handlers, function(handler) {
+        if (handler.route.test(fragment)) {
+          handler.callback(fragment);
+          return true;
+        }
+      });
+      return matched;
+    },
+
+    // Save a fragment into the hash history, or replace the URL state if the
+    // 'replace' option is passed. You are responsible for properly URL-encoding
+    // the fragment in advance.
+    //
+    // The options object can contain `trigger: true` if you wish to have the
+    // route callback be fired (not usually desirable), or `replace: true`, if
+    // you wish to modify the current URL without adding an entry to the history.
+    navigate: function(fragment, options) {
+      if (!History.started) return false;
+      if (!options || options === true) options = {trigger: options};
+      fragment = this.getFragment(fragment || '');
+      if (this.fragment === fragment) return;
+      this.fragment = fragment;
+      var url = this.root + fragment;
+
+      // If pushState is available, we use it to set the fragment as a real URL.
+      if (this._hasPushState) {
+        this.history[options.replace ? 'replaceState' : 'pushState']({}, document.title, url);
+
+      // If hash changes haven't been explicitly disabled, update the hash
+      // fragment to store history.
+      } else if (this._wantsHashChange) {
+        this._updateHash(this.location, fragment, options.replace);
+        if (this.iframe && (fragment !== this.getFragment(this.getHash(this.iframe)))) {
+          // Opening and closing the iframe tricks IE7 and earlier to push a
+          // history entry on hash-tag change.  When replace is true, we don't
+          // want this.
+          if(!options.replace) this.iframe.document.open().close();
+          this._updateHash(this.iframe.location, fragment, options.replace);
+        }
+
+      // If you've told us that you explicitly don't want fallback hashchange-
+      // based history, then `navigate` becomes a page refresh.
+      } else {
+        return this.location.assign(url);
+      }
+      if (options.trigger) this.loadUrl(fragment);
+    },
+
+    // Update the hash location, either replacing the current entry, or adding
+    // a new one to the browser history.
+    _updateHash: function(location, fragment, replace) {
+      if (replace) {
+        var href = location.href.replace(/(javascript:|#).*$/, '');
+        location.replace(href + '#' + fragment);
+      } else {
+        // Some browsers require that `hash` contains a leading #.
+        location.hash = '#' + fragment;
+      }
+    }
+
+  });
+
+  // Create the default Backbone.history.
+  Backbone.history = new History;
+
+  // Helpers
+  // -------
+
+  // Helper function to correctly set up the prototype chain, for subclasses.
+  // Similar to `goog.inherits`, but uses a hash of prototype properties and
+  // class properties to be extended.
+  var extend = function(protoProps, staticProps) {
+    var parent = this;
+    var child;
+
+    // The constructor function for the new subclass is either defined by you
+    // (the "constructor" property in your `extend` definition), or defaulted
+    // by us to simply call the parent's constructor.
+    if (protoProps && _.has(protoProps, 'constructor')) {
+      child = protoProps.constructor;
+    } else {
+      child = function(){ return parent.apply(this, arguments); };
+    }
+
+    // Add static properties to the constructor function, if supplied.
+    _.extend(child, parent, staticProps);
+
+    // Set the prototype chain to inherit from `parent`, without calling
+    // `parent`'s constructor function.
+    var Surrogate = function(){ this.constructor = child; };
+    Surrogate.prototype = parent.prototype;
+    child.prototype = new Surrogate;
+
+    // Add prototype properties (instance properties) to the subclass,
+    // if supplied.
+    if (protoProps) _.extend(child.prototype, protoProps);
+
+    // Set a convenience property in case the parent's prototype is needed
+    // later.
+    child.__super__ = parent.prototype;
+
+    return child;
+  };
+
+  // Set up inheritance for the model, collection, router, view and history.
+  Model.extend = Collection.extend = Router.extend = View.extend = History.extend = extend;
+
+  // Throw an error when a URL is needed, and none is supplied.
+  var urlError = function() {
+    throw new Error('A "url" property or function must be specified');
+  };
+
+  // Wrap an optional error callback with a fallback error event.
+  var wrapError = function (model, options) {
+    var error = options.error;
+    options.error = function(resp) {
+      if (error) error(model, resp, options);
+      model.trigger('error', model, resp, options);
+    };
+  };
+
+}).call(this);
+
+/**
+ * jQuery.fn.sortElements
+ * --------------
+ * @author James Padolsey (http://james.padolsey.com)
+ * @version 0.11
+ * @updated 18-MAR-2010
+ * --------------
+ * @param Function comparator:
+ *   Exactly the same behaviour as [1,2,3].sort(comparator)
+ *   
+ * @param Function getSortable
+ *   A function that should return the element that is
+ *   to be sorted. The comparator will run on the
+ *   current collection, but you may want the actual
+ *   resulting sort to occur on a parent or another
+ *   associated element.
+ *   
+ *   E.g. $('td').sortElements(comparator, function(){
+ *      return this.parentNode; 
+ *   })
+ *   
+ *   The <td>'s parent (<tr>) will be sorted instead
+ *   of the <td> itself.
+ */
+jQuery.fn.sortElements = (function(){
+    
+    var sort = [].sort;
+    
+    return function(comparator, getSortable) {
+        
+        getSortable = getSortable || function(){return this;};
+        
+        var placements = this.map(function(){
+            
+            var sortElement = getSortable.call(this),
+                parentNode = sortElement.parentNode,
+                
+                // Since the element itself will change position, we have
+                // to have some way of storing it's original position in
+                // the DOM. The easiest way is to have a 'flag' node:
+                nextSibling = parentNode.insertBefore(
+                    document.createTextNode(''),
+                    sortElement.nextSibling
+                );
+            
+            return function() {
+                
+                if (parentNode === this) {
+                    throw new Error(
+                        "You can't sort elements if any one is a descendant of another."
+                    );
+                }
+                
+                // Insert before flag:
+                parentNode.insertBefore(this, nextSibling);
+                // Remove flag:
+                parentNode.removeChild(nextSibling);
+                
+            };
+            
+        });
+       
+        return sort.call(this, comparator).each(function(i){
+            placements[i].call(getSortable.call(this));
+        });
+        
+    };
+    
+})();
+//      JointJS library.
+//      (c) 2011-2013 client IO
+
+if (typeof exports === 'object') {
+
+    var _ = require('lodash');
+}
+
+
+// Global namespace.
+
+var joint = {
+
+    // `joint.dia` namespace.
+    dia: {},
+
+    // `joint.ui` namespace.
+    ui: {},
+
+    // `joint.layout` namespace.
+    layout: {},
+
+    // `joint.shapes` namespace.
+    shapes: {},
+
+    // `joint.format` namespace.
+    format: {},
+
+    util: {
+
+        // Return a simple hash code from a string. See http://werxltd.com/wp/2010/05/13/javascript-implementation-of-javas-string-hashcode-method/.
+        hashCode: function(str) {
+
+            var hash = 0;
+            if (str.length == 0) return hash;
+            for (var i = 0; i < str.length; i++) {
+                var c = str.charCodeAt(i);
+                hash = ((hash << 5) - hash) + c;
+                hash = hash & hash; // Convert to 32bit integer
+            }
+            return hash;
+        },
+
+        getByPath: function(obj, path, delim) {
+            
+            delim = delim || '.';
+            var keys = path.split(delim);
+            var key;
+            
+            while (keys.length) {
+                key = keys.shift();
+                if (key in obj) {
+                    obj = obj[key];
+                } else {
+                    return undefined;
+                }
+            }
+            return obj;
+        },
+
+        setByPath: function(obj, path, value, delim) {
+
+            delim = delim || '.';
+
+            var keys = path.split(delim);
+            var diver = obj;
+            var i = 0;
+
+            if (path.indexOf(delim) > -1) {
+
+                for (var len = keys.length; i < len - 1; i++) {
+                    // diver creates an empty object if there is no nested object under such a key.
+                    // This means that one can populate an empty nested object with setByPath().
+                    diver = diver[keys[i]] || (diver[keys[i]] = {});
+                }
+                diver[keys[len - 1]] = value;
+            } else {
+                obj[path] = value;
+            }
+            return obj;
+        },
+
+        flattenObject: function(obj, delim, stop) {
+            
+            delim = delim || '.';
+            var ret = {};
+	    
+	    for (var key in obj) {
+		if (!obj.hasOwnProperty(key)) continue;
+
+                var shouldGoDeeper = typeof obj[key] === 'object';
+                if (shouldGoDeeper && stop && stop(obj[key])) {
+                    shouldGoDeeper = false;
+                }
+                
+		if (shouldGoDeeper) {
+		    var flatObject = this.flattenObject(obj[key], delim, stop);
+		    for (var flatKey in flatObject) {
+			if (!flatObject.hasOwnProperty(flatKey)) continue;
+			
+			ret[key + delim + flatKey] = flatObject[flatKey];
+		    }
+		} else {
+		    ret[key] = obj[key];
+		}
+	    }
+	    return ret;
+        },
+
+        uuid: function() {
+
+            // credit: http://stackoverflow.com/posts/2117523/revisions
+            
+            return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
+                var r = Math.random()*16|0, v = c == 'x' ? r : (r&0x3|0x8);
+                return v.toString(16);
+            });
+        },
+
+        // Generate global unique id for obj and store it as a property of the object.
+        guid: function(obj) {
+            
+            this.guid.id = this.guid.id || 1;
+            obj.id = (obj.id === undefined ? 'j_' + this.guid.id++ : obj.id);
+            return obj.id;
+        },
+
+        // Copy all the properties to the first argument from the following arguments.
+        // All the properties will be overwritten by the properties from the following
+        // arguments. Inherited properties are ignored.
+        mixin: function() {
+            
+            var target = arguments[0];
+            
+            for (var i = 1, l = arguments.length; i < l; i++) {
+                
+                var extension = arguments[i];
+                
+                // Only functions and objects can be mixined.
+
+                if ((Object(extension) !== extension) &&
+                    !_.isFunction(extension) &&
+                    (extension === null || extension === undefined)) {
+
+                    continue;
+                }
+
+                _.each(extension, function(copy, key) {
+                    
+                    if (this.mixin.deep && (Object(copy) === copy)) {
+
+                        if (!target[key]) {
+
+                            target[key] = _.isArray(copy) ? [] : {};
+                        }
+                        
+                        this.mixin(target[key], copy);
+                        return;
+                    }
+                    
+                    if (target[key] !== copy) {
+                        
+                        if (!this.mixin.supplement || !target.hasOwnProperty(key)) {
+                            
+	                    target[key] = copy;
+                        }
+
+                    }
+                    
+                }, this);
+            }
+            
+            return target;
+        },
+
+        // Copy all properties to the first argument from the following
+        // arguments only in case if they don't exists in the first argument.
+        // All the function propererties in the first argument will get
+        // additional property base pointing to the extenders same named
+        // property function's call method.
+        supplement: function() {
+
+            this.mixin.supplement = true;
+            var ret = this.mixin.apply(this, arguments);
+            this.mixin.supplement = false;
+            return ret;
+        },
+
+        // Same as `mixin()` but deep version.
+        deepMixin: function() {
+            
+            this.mixin.deep = true;
+            var ret = this.mixin.apply(this, arguments);
+            this.mixin.deep = false;
+            return ret;
+        },
+
+        // Same as `supplement()` but deep version.
+        deepSupplement: function() {
+            
+            this.mixin.deep = this.mixin.supplement = true;
+            var ret = this.mixin.apply(this, arguments);
+            this.mixin.deep = this.mixin.supplement = false;
+            return ret;
+        },
+
+        normalizeEvent: function(evt) {
+
+            return (evt.originalEvent && evt.originalEvent.changedTouches && evt.originalEvent.changedTouches.length) ? evt.originalEvent.changedTouches[0] : evt;
+        },
+
+	nextFrame:(function() {
+
+	    var raf;
+	    var client = typeof window != 'undefined';
+
+	    if (client) {
+
+		raf = window.requestAnimationFrame       ||
+		      window.webkitRequestAnimationFrame ||
+	              window.mozRequestAnimationFrame    ||
+		      window.oRequestAnimationFrame      ||
+		      window.msRequestAnimationFrame;
+
+	    }
+
+	    if (!raf) {
+
+		var lastTime = 0;
+
+		raf = function(callback) {
+
+		    var currTime = new Date().getTime();
+		    var timeToCall = Math.max(0, 16 - (currTime - lastTime));
+		    var id = setTimeout(function() { callback(currTime + timeToCall); }, timeToCall);
+		    lastTime = currTime + timeToCall;
+		    return id;
+
+		};
+	    }
+
+	    return client ? _.bind(raf, window) : raf;
+	})(),
+
+	cancelFrame: (function() {
+
+	    var caf;
+	    var client = typeof window != 'undefined';
+
+	    if (client) {
+
+		caf = window.cancelAnimationFrame              ||
+		      window.webkitCancelAnimationFrame        ||
+	              window.webkitCancelRequestAnimationFrame ||
+		      window.msCancelAnimationFrame            ||
+	              window.msCancelRequestAnimationFrame     ||
+		      window.oCancelAnimationFrame             ||
+	              window.oCancelRequestAnimationFrame      ||
+	              window.mozCancelAnimationFrame           ||
+		      window.mozCancelRequestAnimationFrame;
+
+	    }
+
+	    caf = caf || clearTimeout;
+
+	    return client ? _.bind(caf, window) : caf;
+	})(),
+
+	timing: {
+
+	    linear: function(t) {
+		return t;
+	    },
+
+	    quad: function(t) {
+		return t * t;
+	    },
+
+	    cubic: function(t) {
+		return t * t * t;
+	    },
+
+	    inout: function(t) {
+		if (t <= 0) return 0;
+		if (t >= 1) return 1;
+		var t2 = t * t, t3 = t2 * t;
+		return 4 * (t < .5 ? t3 : 3 * (t - t2) + t3 - .75);
+	    },
+
+	    exponential: function(t) {
+		return Math.pow(2, 10 * (t - 1));
+	    },
+
+	    bounce: function(t) {
+		for(var a = 0, b = 1; 1; a += b, b /= 2) {
+		    if (t >= (7 - 4 * a) / 11) {
+			var q = (11 - 6 * a - 11 * t) / 4;
+			return -q * q + b * b;
+		    }
+		}
+	    },
+
+	    reverse: function(f) {
+		return function(t) {
+		    return 1 - f(1 - t)
+		}
+	    },
+
+	    reflect: function(f) {
+		return function(t) {
+		    return .5 * (t < .5 ? f(2 * t) : (2 - f(2 - 2 * t)));
+		};
+	    },
+
+	    clamp: function(f,n,x) {
+		n = n || 0;
+		x = x || 1;
+		return function(t) {
+		    var r = f(t);
+		    return r < n ? n : r > x ? x : r;
+		}
+	    },
+
+	    back: function(s) {
+		if (!s) s = 1.70158;
+		return function(t) {
+		    return t * t * ((s + 1) * t - s);
+		};
+	    },
+
+	    elastic: function(x) {
+		if (!x) x = 1.5;
+		return function(t) {
+		    return Math.pow(2, 10 * (t - 1)) * Math.cos(20*Math.PI*x/3*t);
+		}
+	    }
+
+	},
+
+	interpolate: {
+
+	    number: function(a, b) {
+		var d = b - a;
+		return function(t) { return a + d * t; };
+	    },
+
+	    object: function(a, b) {
+		var s = _.keys(a);
+		return function(t) {
+		    var i, p, r = {};
+		    for (i = s.length - 1; i != -1; i--) {
+			p = s[i];
+			r[p] = a[p] + (b[p] - a[p]) * t;
+		    }
+		    return  r;
+		}
+	    },
+
+	    hexColor: function(a, b) {
+
+		var ca = parseInt(a.slice(1), 16), cb = parseInt(b.slice(1), 16);
+
+		var ra = ca & 0x0000ff, rd = (cb & 0x0000ff) - ra;
+		var ga = ca & 0x00ff00, gd = (cb & 0x00ff00) - ga;
+		var ba = ca & 0xff0000, bd = (cb & 0xff0000) - ba;
+
+		return function(t) {
+		    return '#' + (1 << 24 |(ra + rd * t)|(ga + gd * t)|(ba + bd * t)).toString(16).slice(1);
+		};
+	    },
+
+	    unit: function(a, b) {
+
+		var r = /(-?[0-9]*.[0-9]*)(px|em|cm|mm|in|pt|pc|%)/;
+
+		var ma = r.exec(a), mb = r.exec(b);
+		var p = mb[1].indexOf('.'), f = p > 0 ? mb[1].length - p - 1 : 0;
+		var a = +ma[1], d = +mb[1] - a, u = ma[2];
+
+		return function(t) {
+		    return (a + d * t).toFixed(f) + u;
+		}
+	    }
+	},
+
+        // SVG filters.
+        filter: {
+
+            // `x` ... horizontal blur
+            // `y` ... vertical blur (optional)
+            blur: function(args) {
+                
+                var x = _.isFinite(args.x) ? args.x : 2;
+
+                return _.template('<filter><feGaussianBlur stdDeviation="${stdDeviation}"/></filter>', {
+                    stdDeviation: _.isFinite(args.y) ? [x, args.y] : x
+                });
+            },
+
+            // `dx` ... horizontal shift
+            // `dy` ... vertical shift
+            // `blur` ... blur
+            // `color` ... color
+            dropShadow: function(args) {
+                
+                return _.template('<filter><feGaussianBlur in="SourceAlpha" stdDeviation="${blur}"/><feOffset dx="${dx}" dy="${dy}" result="offsetblur"/><feFlood flood-color="${color}"/><feComposite in2="offsetblur" operator="in"/><feMerge><feMergeNode/><feMergeNode in="SourceGraphic"/></feMerge></filter>', {
+                    dx: args.dx || 0,
+                    dy: args.dy || 0,
+                    color: args.color || 'black',
+                    blur: _.isFinite(args.blur) ? args.blur : 4
+                });
+            },
+
+            // `amount` ... the proportion of the conversion. A value of 1 is completely grayscale. A value of 0 leaves the input unchanged.
+            grayscale: function(args) {
+
+                var amount = _.isFinite(args.amount) ? args.amount : 1;
+                
+                return _.template('<filter><feColorMatrix type="matrix" values="${a} ${b} ${c} 0 0 ${d} ${e} ${f} 0 0 ${g} ${b} ${h} 0 0 0 0 0 1 0"/></filter>', {
+                    a: 0.2126 + 0.7874 * (1 - amount),
+                    b: 0.7152 - 0.7152 * (1 - amount),
+                    c: 0.0722 - 0.0722 * (1 - amount),
+                    d: 0.2126 - 0.2126 * (1 - amount),
+                    e: 0.7152 + 0.2848 * (1 - amount),
+                    f: 0.0722 - 0.0722 * (1 - amount),
+                    g: 0.2126 - 0.2126 * (1 - amount),
+                    h: 0.0722 + 0.9278 * (1 - amount)
+                });
+            },
+
+            // `amount` ... the proportion of the conversion. A value of 1 is completely sepia. A value of 0 leaves the input unchanged.
+            sepia: function(args) {
+
+                var amount = _.isFinite(args.amount) ? args.amount : 1;
+
+                return _.template('<filter><feColorMatrix type="matrix" values="${a} ${b} ${c} 0 0 ${d} ${e} ${f} 0 0 ${g} ${h} ${i} 0 0 0 0 0 1 0"/></filter>', {
+                    a: 0.393 + 0.607 * (1 - amount),
+                    b: 0.769 - 0.769 * (1 - amount),
+                    c: 0.189 - 0.189 * (1 - amount),
+                    d: 0.349 - 0.349 * (1 - amount),
+                    e: 0.686 + 0.314 * (1 - amount),
+                    f: 0.168 - 0.168 * (1 - amount),
+                    g: 0.272 - 0.272 * (1 - amount),
+                    h: 0.534 - 0.534 * (1 - amount),
+                    i: 0.131 + 0.869 * (1 - amount)
+                });
+            },
+
+            // `amount` ... the proportion of the conversion. A value of 0 is completely un-saturated. A value of 1 leaves the input unchanged.
+            saturate: function(args) {
+
+                var amount = _.isFinite(args.amount) ? args.amount : 1;
+
+                return _.template('<filter><feColorMatrix type="saturate" values="${amount}"/></filter>', {
+                    amount: 1 - amount
+                });
+            },
+
+            // `angle` ...  the number of degrees around the color circle the input samples will be adjusted.
+            hueRotate: function(args) {
+
+                return _.template('<filter><feColorMatrix type="hueRotate" values="${angle}"/></filter>', {
+                    angle: args.angle || 0
+                });
+            },
+
+            // `amount` ... the proportion of the conversion. A value of 1 is completely inverted. A value of 0 leaves the input unchanged.
+            invert: function(args) {
+
+                var amount = _.isFinite(args.amount) ? args.amount : 1;
+                
+                return _.template('<filter><feComponentTransfer><feFuncR type="table" tableValues="${amount} ${amount2}"/><feFuncG type="table" tableValues="${amount} ${amount2}"/><feFuncB type="table" tableValues="${amount} ${amount2}"/></feComponentTransfer></filter>', {
+                    amount: amount,
+                    amount2: 1 - amount
+                });
+            },
+
+            // `amount` ... proportion of the conversion. A value of 0 will create an image that is completely black. A value of 1 leaves the input unchanged.
+            brightness: function(args) {
+
+                return _.template('<filter><feComponentTransfer><feFuncR type="linear" slope="${amount}"/><feFuncG type="linear" slope="${amount}"/><feFuncB type="linear" slope="${amount}"/></feComponentTransfer></filter>', {
+                    amount: _.isFinite(args.amount) ? args.amount : 1
+                });
+            },
+
+            // `amount` ... proportion of the conversion. A value of 0 will create an image that is completely black. A value of 1 leaves the input unchanged.
+            contrast: function(args) {
+
+                var amount = _.isFinite(args.amount) ? args.amount : 1;
+                
+                return _.template('<filter><feComponentTransfer><feFuncR type="linear" slope="${amount}" intercept="${amount2}"/><feFuncG type="linear" slope="${amount}" intercept="${amount2}"/><feFuncB type="linear" slope="${amount}" intercept="${amount2}"/></feComponentTransfer></filter>', {
+                    amount: amount,
+                    amount2: .5 - amount / 2
+                });
+            }
+        }
+    }
+};
+
+if (typeof exports === 'object') {
+
+    module.exports = joint;
+}
+// Vectorizer.
+// -----------
+
+// A tiny library for making your live easier when dealing with SVG.
+
+// Copyright © 2012 - 2013 client IO
+
+(function(root, factory) {
+
+    if (typeof define === 'function' && define.amd) {
+        // AMD. Register as an anonymous module.
+        define(['lodash'], factory);
+        
+    } else {
+        // Browser globals.
+        root.Vectorizer = root.V = factory(root._);
+    }
+
+}(this, function(_) {
+
+    // Well, if SVG is not supported, this library is useless.
+    var SVGsupported = !!(window.SVGAngle || document.implementation.hasFeature('http://www.w3.org/TR/SVG11/feature#BasicStructure', '1.1'));
+
+    // XML namespaces.
+    var ns = {
+        xmlns: 'http://www.w3.org/2000/svg',
+        xlink: 'http://www.w3.org/1999/xlink'
+    };
+    // SVG version.
+    var SVGversion = '1.1';
+
+    // Create SVG element.
+    // -------------------
+
+    function createElement(el, attrs, children) {
+
+        if (!el) return undefined;
+        
+        // If `el` is an object, it is probably a native SVG element. Wrap it to VElement.
+        if (typeof el === 'object') {
+            return new VElement(el);
+        }
+        attrs = attrs || {};
+
+        // If `el` is a `'svg'` or `'SVG'` string, create a new SVG canvas.
+        if (el.toLowerCase() === 'svg') {
+            
+            attrs.xmlns = ns.xmlns;
+            attrs['xmlns:xlink'] = ns.xlink;
+            attrs.version = SVGversion;
+            
+        } else if (el[0] === '<') {
+            // Create element from an SVG string.
+            // Allows constructs of type: `document.appendChild(Vectorizer('<rect></rect>').node)`.
+            
+            var svg = '<svg xmlns="' + ns.xmlns + '" xmlns:xlink="' + ns.xlink + '" version="' + SVGversion + '">' + el + '</svg>';
+            var parser = new DOMParser();
+            parser.async = false;
+            var svgDoc = parser.parseFromString(svg, 'text/xml').documentElement;
+
+            // Note that `createElement()` might also return an array should the SVG string passed as
+            // the first argument contain more then one root element.
+            if (svgDoc.childNodes.length > 1) {
+
+                return _.map(svgDoc.childNodes, function(childNode) {
+
+                    return new VElement(document.importNode(childNode, true));
+                });
+            }
+            
+            return new VElement(document.importNode(svgDoc.firstChild, true));
+        }
+        
+        el = document.createElementNS(ns.xmlns, el);
+
+        // Set attributes.
+        for (var key in attrs) {
+
+            setAttribute(el, key, attrs[key]);
+        }
+        
+        // Normalize `children` array.
+        if (Object.prototype.toString.call(children) != '[object Array]') children = [children];
+
+        // Append children if they are specified.
+        var i = 0, len = (children[0] && children.length) || 0, child;
+        for (; i < len; i++) {
+            child = children[i];
+            el.appendChild(child instanceof VElement ? child.node : child);
+        }
+        
+        return new VElement(el);
+    }
+
+    function setAttribute(el, name, value) {
+        
+        if (name.indexOf(':') > -1) {
+            // Attribute names can be namespaced. E.g. `image` elements
+            // have a `xlink:href` attribute to set the source of the image.
+            var combinedKey = name.split(':');
+            el.setAttributeNS(ns[combinedKey[0]], combinedKey[1], value);
+        } else if (name === 'id') {
+            el.id = value;
+        } else {
+            el.setAttribute(name, value);
+        }
+    }
+
+    function parseTransformString(transform) {
+        var translate,
+            rotate,
+            scale;
+        
+        if (transform) {
+            var translateMatch = transform.match(/translate\((.*)\)/);
+            if (translateMatch) {
+                translate = translateMatch[1].split(',');
+            }
+            var rotateMatch = transform.match(/rotate\((.*)\)/);
+            if (rotateMatch) {
+                rotate = rotateMatch[1].split(',');
+            }
+            var scaleMatch = transform.match(/scale\((.*)\)/);
+            if (scaleMatch) {
+                scale = scaleMatch[1].split(',');
+            }
+        }
+
+        var sx = (scale && scale[0]) ? parseFloat(scale[0]) : 1;
+        
+        return {
+            translate: {
+                tx: (translate && translate[0]) ? parseInt(translate[0], 10) : 0,
+                ty: (translate && translate[1]) ? parseInt(translate[1], 10) : 0
+            },
+            rotate: {
+                angle: (rotate && rotate[0]) ? parseInt(rotate[0], 10) : 0,
+                cx: (rotate && rotate[1]) ? parseInt(rotate[1], 10) : undefined,
+                cy: (rotate && rotate[2]) ? parseInt(rotate[2], 10) : undefined
+            },
+            scale: {
+                sx: sx,
+                sy: (scale && scale[1]) ? parseFloat(scale[1]) : sx
+            }
+        };
+    }
+
+
+    // Matrix decomposition.
+    // ---------------------
+
+    function deltaTransformPoint(matrix, point)  {
+        
+	var dx = point.x * matrix.a + point.y * matrix.c + 0;
+	var dy = point.x * matrix.b + point.y * matrix.d + 0;
+	return { x: dx, y: dy };
+    }
+
+    function decomposeMatrix(matrix) {
+
+        // @see https://gist.github.com/2052247
+        
+        // calculate delta transform point
+	var px = deltaTransformPoint(matrix, { x: 0, y: 1 });
+	var py = deltaTransformPoint(matrix, { x: 1, y: 0 });
+        
+	// calculate skew
+	var skewX = ((180 / Math.PI) * Math.atan2(px.y, px.x) - 90);
+	var skewY = ((180 / Math.PI) * Math.atan2(py.y, py.x));
+        
+	return {
+            
+	    translateX: matrix.e,
+	    translateY: matrix.f,
+	    scaleX: Math.sqrt(matrix.a * matrix.a + matrix.b * matrix.b),
+	    scaleY: Math.sqrt(matrix.c * matrix.c + matrix.d * matrix.d),
+	    skewX: skewX,
+	    skewY: skewY,
+	    rotation: skewX // rotation is the same as skew x
+	};
+    }
+    
+    // VElement.
+    // ---------
+
+    function VElement(el) {
+        this.node = el;
+        if (!this.node.id) {
+            this.node.id = _.uniqueId('v_');
+        }
+    }
+
+    // VElement public API.
+    // --------------------
+
+    VElement.prototype = {
+        
+        translate: function(tx, ty) {
+            ty = ty || 0;
+            
+            var transformAttr = this.attr('transform') || '',
+                transform = parseTransformString(transformAttr);
+
+            // Is it a getter?
+            if (typeof tx === 'undefined') {
+                return transform.translate;
+            }
+            
+            transformAttr = transformAttr.replace(/translate\([^\)]*\)/g, '').trim();
+
+            var newTx = transform.translate.tx + tx,
+                newTy = transform.translate.ty + ty;
+
+            // Note that `translate()` is always the first transformation. This is
+            // usually the desired case.
+            this.attr('transform', 'translate(' + newTx + ',' + newTy + ') ' + transformAttr);
+            return this;
+        },
+
+        rotate: function(angle, cx, cy) {
+            var transformAttr = this.attr('transform') || '',
+                transform = parseTransformString(transformAttr);
+
+            // Is it a getter?
+            if (typeof angle === 'undefined') {
+                return transform.rotate;
+            }
+            
+            transformAttr = transformAttr.replace(/rotate\([^\)]*\)/g, '').trim();
+
+            var newAngle = transform.rotate.angle + angle % 360,
+                newOrigin = (cx !== undefined && cy !== undefined) ? ',' + cx + ',' + cy : '';
+            
+            this.attr('transform', transformAttr + ' rotate(' + newAngle + newOrigin + ')');
+            return this;
+        },
+
+        // Note that `scale` as the only transformation does not combine with previous values.
+        scale: function(sx, sy) {
+            sy = (typeof sy === 'undefined') ? sx : sy;
+            
+            var transformAttr = this.attr('transform') || '',
+                transform = parseTransformString(transformAttr);
+
+            // Is it a getter?
+            if (typeof sx === 'undefined') {
+                return transform.scale;
+            }
+            
+            transformAttr = transformAttr.replace(/scale\([^\)]*\)/g, '').trim();
+
+            this.attr('transform', transformAttr + ' scale(' + sx + ',' + sy + ')');
+            return this;
+        },
+
+        // Get SVGRect that contains coordinates and dimension of the real bounding box,
+        // i.e. after transformations are applied.
+        // If `target` is specified, bounding box will be computed relatively to `target` element.
+        bbox: function(withoutTransformations, target) {
+
+            // If the element is not in the live DOM, it does not have a bounding box defined and
+            // so fall back to 'zero' dimension element.
+            if (!this.node.ownerSVGElement) return { x: 0, y: 0, width: 0, height: 0 };
+            
+            var box;
+            try {
+
+                box = this.node.getBBox();
+
+		// Opera returns infinite values in some cases.
+		// Note that Infinity | 0 produces 0 as opposed to Infinity || 0.
+		// We also have to create new object as the standard says that you can't
+		// modify the attributes of a bbox.
+		box = { x: box.x | 0, y: box.y | 0, width: box.width | 0, height: box.height | 0};
+
+            } catch (e) {
+
+                // Fallback for IE.
+                box = {
+                    x: this.node.clientLeft,
+                    y: this.node.clientTop,
+                    width: this.node.clientWidth,
+                    height: this.node.clientHeight
+                };
+            }
+
+            if (withoutTransformations) {
+
+                return box;
+            }
+
+            var matrix = this.node.getTransformToElement(target || this.node.ownerSVGElement);
+            var corners = [];
+            var point = this.node.ownerSVGElement.createSVGPoint();
+
+
+            point.x = box.x;
+            point.y = box.y;
+            corners.push(point.matrixTransform(matrix));
+            
+            point.x = box.x + box.width;
+            point.y = box.y;
+            corners.push(point.matrixTransform(matrix));
+            
+            point.x = box.x + box.width;
+            point.y = box.y + box.height;
+            corners.push(point.matrixTransform(matrix));
+            
+            point.x = box.x;
+            point.y = box.y + box.height;
+            corners.push(point.matrixTransform(matrix));
+
+            var minX = corners[0].x;
+            var maxX = minX;
+            var minY = corners[0].y;
+            var maxY = minY;
+            
+            for (var i = 1, len = corners.length; i < len; i++) {
+                
+                var x = corners[i].x;
+                var y = corners[i].y;
+
+                if (x < minX) {
+                    minX = x;
+                } else if (x > maxX) {
+                    maxX = x;
+                }
+                
+                if (y < minY) {
+                    minY = y;
+                } else if (y > maxY) {
+                    maxY = y;
+                }
+            }
+
+            return {
+                x: minX,
+                y: minY,
+                width: maxX - minX,
+                height: maxY - minY
+            };
+        },
+
+        text: function(content) {
+            var lines = content.split('\n'), i = 0,
+                tspan;
+
+            // `alignment-baseline` does not work in Firefox.
+	    // Setting `dominant-baseline` on the `<text>` element doesn't work in IE9.
+            // In order to have the 0,0 coordinate of the `<text>` element (or the first `<tspan>`)
+	    // in the top left corner we translate the `<text>` element by `0.8em`.
+	    // See `http://www.w3.org/Graphics/SVG/WG/wiki/How_to_determine_dominant_baseline`.
+	    // See also `http://apike.ca/prog_svg_text_style.html`.
+	    this.attr('y', '0.8em');
+            
+            if (lines.length === 1) {
+                this.node.textContent = content;
+                return this;
+            }
+            // Easy way to erase all `<tspan>` children;
+            this.node.textContent = '';
+            
+            for (; i < lines.length; i++) {
+
+                // Shift all the <tspan> but first by one line (`1em`)
+                tspan = V('tspan', { dy: (i == 0 ? '0em' : '1em'), x: this.attr('x') || 0});
+                tspan.node.textContent = lines[i];
+                
+                this.append(tspan);
+            }
+            return this;
+        },
+        
+        attr: function(name, value) {
+            
+            if (typeof name === 'string' && typeof value === 'undefined') {
+                return this.node.getAttribute(name);
+            }
+            
+            if (typeof name === 'object') {
+                
+                _.each(name, function(value, name) {
+
+                    setAttribute(this.node, name, value);
+                    
+                }, this);
+                
+            } else {
+
+                setAttribute(this.node, name, value);
+            }
+
+            return this;
+        },
+
+        remove: function() {
+            if (this.node.parentNode) {
+                this.node.parentNode.removeChild(this.node);
+            }
+        },
+
+        append: function(el) {
+
+            var els = el;
+            
+            if (!_.isArray(el)) {
+                
+                els = [el];
+            }
+
+            _.each(els, function(el) {
+
+                this.node.appendChild(el instanceof VElement ? el.node : el);
+                
+            }, this);
+            
+            return this;
+        },
+
+        prepend: function(el) {
+            this.node.insertBefore(el instanceof VElement ? el.node : el, this.node.firstChild);
+        },
+
+        svg: function() {
+
+            return this.node instanceof window.SVGSVGElement ? this : V(this.node.ownerSVGElement);
+        },
+
+        defs: function() {
+
+            var defs = this.svg().node.getElementsByTagName('defs');
+            
+            return (defs && defs.length) ? V(defs[0]) : undefined;
+        },
+
+        clone: function() {
+            var clone = V(this.node.cloneNode(true));
+            // Note that clone inherits also ID. Therefore, we need to change it here.
+            clone.node.id = _.uniqueId('v-');
+            return clone;
+        },
+
+        // Convert global point into the coordinate space of this element.
+        toLocalPoint: function(x, y) {
+
+            var svg = this.svg().node;
+            
+            var p = svg.createSVGPoint();
+            p.x = x;
+            p.y = y;
+
+	    try {
+
+		var globalPoint = p.matrixTransform(svg.getScreenCTM().inverse());
+		var globalToLocalMatrix = this.node.getTransformToElement(svg).inverse();
+
+	    } catch(e) {
+		// IE9 throws an exception in odd cases. (`Unexpected call to method or property access`)
+		// We have to make do with the original coordianates.
+		return p;
+	    }
+
+            return globalPoint.matrixTransform(globalToLocalMatrix);
+        },
+
+        translateCenterToPoint: function(p) {
+
+            var bbox = this.bbox();
+            var center = g.rect(bbox).center();
+
+            this.translate(p.x - center.x, p.y - center.y);
+        },
+
+        // Efficiently auto-orient an element. This basically implements the orient=auto attribute
+        // of markers. The easiest way of understanding on what this does is to imagine the element is an
+        // arrowhead. Calling this method on the arrowhead makes it point to the `position` point while
+        // being auto-oriented (properly rotated) towards the `reference` point.
+        // `target` is the element relative to which the transformations are applied. Usually a viewport.
+        translateAndAutoOrient: function(position, reference, target) {
+
+            // Clean-up previously set transformations except the scale. If we didn't clean up the
+            // previous transformations then they'd add up with the old ones. Scale is an exception as
+            // it doesn't add up, consider: `this.scale(2).scale(2).scale(2)`. The result is that the
+            // element is scaled by the factor 2, not 8.
+
+            var s = this.scale();
+            this.attr('transform', '');
+            this.scale(s.sx, s.sy);
+
+            var svg = this.svg().node;
+            var bbox = this.bbox(false, target);
+
+            // 1. Translate to origin.
+            var translateToOrigin = svg.createSVGTransform();
+            translateToOrigin.setTranslate(-bbox.x - bbox.width/2, -bbox.y - bbox.height/2);
+
+            // 2. Rotate around origin.
+            var rotateAroundOrigin = svg.createSVGTransform();
+            var angle = g.point(position).changeInAngle(position.x - reference.x, position.y - reference.y, reference);
+            rotateAroundOrigin.setRotate(angle, 0, 0);
+
+            // 3. Translate to the `position` + the offset (half my width) towards the `reference` point.
+            var translateFinal = svg.createSVGTransform();
+            var finalPosition = g.point(position).move(reference, bbox.width/2);
+            translateFinal.setTranslate(position.x + (position.x - finalPosition.x), position.y + (position.y - finalPosition.y));
+
+            // 4. Apply transformations.
+            var ctm = this.node.getTransformToElement(target);
+            var transform = svg.createSVGTransform();
+            transform.setMatrix(
+                translateFinal.matrix.multiply(
+                    rotateAroundOrigin.matrix.multiply(
+                        translateToOrigin.matrix.multiply(
+                            ctm)))
+            );
+
+            // Instead of directly setting the `matrix()` transform on the element, first, decompose
+            // the matrix into separate transforms. This allows us to use normal Vectorizer methods
+            // as they don't work on matrices. An example of this is to retrieve a scale of an element.
+            // this.node.transform.baseVal.initialize(transform);
+
+            var decomposition = decomposeMatrix(transform.matrix);
+
+            this.translate(decomposition.translateX, decomposition.translateY);
+            this.rotate(decomposition.rotation);
+            // Note that scale has been already applied, hence the following line stays commented. (it's here just for reference).
+            //this.scale(decomposition.scaleX, decomposition.scaleY);
+
+            return this;
+        },
+
+        animateAlongPath: function(attrs, path) {
+
+            var animateMotion = V('animateMotion', attrs);
+            var mpath = V('mpath', { 'xlink:href': '#' + V(path).node.id });
+
+            animateMotion.append(mpath);
+
+            this.append(animateMotion);
+            try {
+                animateMotion.node.beginElement();
+            } catch (e) {
+                // Fallback for IE 9.
+		// Run the animation programatically if FakeSmile (`http://leunen.me/fakesmile/`) present 
+		if (document.documentElement.getAttribute('smiling') === 'fake') {
+
+		    // Register the animation. (See `https://answers.launchpad.net/smil/+question/203333`)
+		    var animation = animateMotion.node;
+		    animation.animators = new Array();
+
+		    var animationID = animation.getAttribute('id');
+		    if (animationID) id2anim[animationID] = animation;
+
+		    _.each(getTargets(animation), function(target, index) {
+			var animator = new Animator(animation, target, index);
+			animators.push(animator);
+			animation.animators[index] = animator;
+		    });
+
+		    _.invoke(animation.animators, 'register');
+		}
+            }
+        },
+
+        hasClass: function(className) {
+
+            return new RegExp('(\\s|^)' + className + '(\\s|$)').test(this.node.getAttribute('class'));
+        },
+
+        addClass: function(className) {
+
+            if (!this.hasClass(className)) {
+                this.node.setAttribute('class', this.node.getAttribute('class') + ' ' + className);
+            }
+        },
+
+        removeClass: function(className) {
+
+            var removedClass = this.node.getAttribute('class').replace(new RegExp('(\\s|^)' + className + '(\\s|$)', 'g'), '$2');
+
+            if (this.hasClass(className)) {
+                this.node.setAttribute('class', removedClass);
+            }
+        },
+
+        toggleClass: function(className, toAdd) {
+
+            var toRemove = typeof toAdd === 'undefined' ? this.hasClass(className) : !toAdd;
+
+            if (toRemove) {
+                this.removeClass(className);
+            } else {
+                this.addClass(className);
+            }
+        }
+    };
+
+    var V = createElement;
+
+    V.decomposeMatrix = decomposeMatrix;
+
+    var svgDocument = V('svg').node;
+    
+    V.createSVGMatrix = function(m) {
+        
+        return _.extend(svgDocument.createSVGMatrix(), m);
+    };
+
+    V.createSVGTransform = function() {
+
+        return svgDocument.createSVGTransform();
+    };
+
+    V.createSVGPoint = function(x, y) {
+
+        var p = svgDocument.createSVGPoint();
+        p.x = x;
+        p.y = y;
+        return p;
+    };
+
+    return V;
+
+}));
+
+
+//      Geometry library.
+//      (c) 2011-2013 client IO
+
+
+(function(root, factory) {
+
+    if (typeof define === 'function' && define.amd) {
+        // AMD. Register as an anonymous module.
+        define([], factory);
+        
+    } else {
+        // Browser globals.
+        root.g = factory();
+    }
+
+}(this, function() {
+
+
+    // Declare shorthands to the most used math functions.
+    var math = Math;
+    var abs = math.abs;
+    var cos = math.cos;
+    var sin = math.sin;
+    var sqrt = math.sqrt;
+    var mmin = math.min;
+    var mmax = math.max;
+    var atan = math.atan;
+    var atan2 = math.atan2;
+    var acos = math.acos;
+    var round = math.round;
+    var floor = math.floor;
+    var PI = math.PI;
+    var random = math.random;
+    var toDeg = function(rad) { return (180*rad / PI) % 360; };
+    var toRad = function(deg) { return (deg % 360) * PI / 180; };
+    var snapToGrid = function(val, gridSize) { return gridSize * Math.round(val/gridSize); };
+    var normalizeAngle = function(angle) { return (angle % 360) + (angle < 0 ? 360 : 0); };
+
+    // Point
+    // -----
+
+    // Point is the most basic object consisting of x/y coordinate,.
+
+    // Possible instantiations are:
+
+    // * `point(10, 20)`
+    // * `new point(10, 20)`
+    // * `point('10 20')`
+    // * `point(point(10, 20))`
+    function point(x, y) {
+        if (!(this instanceof point))
+            return new point(x, y);
+        var xy;
+        if (y === undefined && Object(x) !== x) {
+            xy = x.split(_.indexOf(x, "@") === -1 ? " " : "@");
+            this.x = parseInt(xy[0], 10);
+            this.y = parseInt(xy[1], 10);
+        } else if (Object(x) === x) {
+            this.x = x.x;
+            this.y = x.y;
+        } else {
+            this.x = x;
+            this.y = y;
+        }
+    }
+
+    point.prototype = {
+        toString: function() {
+            return this.x + "@" + this.y;
+        },
+        // If point lies outside rectangle `r`, return the nearest point on the boundary of rect `r`,
+        // otherwise return point itself.
+        // (see Squeak Smalltalk, Point>>adhereTo:)
+        adhereToRect: function(r) {
+	    if (r.containsPoint(this)){
+	        return this;
+	    }
+	    this.x = mmin(mmax(this.x, r.x), r.x + r.width);
+	    this.y = mmin(mmax(this.y, r.y), r.y + r.height);
+	    return this;
+        },
+        // Compute the angle between me and `p` and the x axis.
+        // (cartesian-to-polar coordinates conversion)
+        // Return theta angle in degrees.
+        theta: function(p) {
+            p = point(p);
+            // Invert the y-axis.
+	    var y = -(p.y - this.y);
+	    var x = p.x - this.x;
+            // Makes sure that the comparison with zero takes rounding errors into account.
+            var PRECISION = 10;
+            // Note that `atan2` is not defined for `x`, `y` both equal zero.
+	    var rad = (y.toFixed(PRECISION) == 0 && x.toFixed(PRECISION) == 0) ? 0 : atan2(y, x); 
+
+            // Correction for III. and IV. quadrant.
+	    if (rad < 0) { 
+	        rad = 2*PI + rad;
+	    }
+	    return 180*rad / PI;
+        },
+        // Returns distance between me and point `p`.
+        distance: function(p) {
+	    return line(this, p).length();
+        },
+        // Returns a manhattan (taxi-cab) distance between me and point `p`.
+        manhattanDistance: function(p) {
+            return abs(p.x - this.x) + abs(p.y - this.y);
+        },
+        // Offset me by the specified amount.
+        offset: function(dx, dy) {
+	    this.x += dx || 0;
+	    this.y += dy || 0;
+	    return this;
+        },
+        magnitude: function() {
+            return sqrt((this.x*this.x) + (this.y*this.y)) || 0.01;
+        },
+        update: function(x, y) {
+            this.x = x || 0;
+            this.y = y || 0;
+            return this;
+        },
+        round: function(decimals) {
+            this.x = decimals ? this.x.toFixed(decimals) : round(this.x);
+            this.y = decimals ? this.y.toFixed(decimals) : round(this.y);
+            return this;
+        },
+        // Scale the line segment between (0,0) and me to have a length of len.
+        normalize: function(len) {
+	    var s = (len || 1) / this.magnitude();
+	    this.x = s * this.x;
+	    this.y = s * this.y;
+	    return this;
+        },
+        difference: function(p) {
+            return point(this.x - p.x, this.y - p.y);
+        },
+        // Converts rectangular to polar coordinates.
+        // An origin can be specified, otherwise it's 0@0.
+        toPolar: function(o) {
+            o = (o && point(o)) || point(0,0);
+            var x = this.x;
+            var y = this.y;
+            this.x = sqrt((x-o.x)*(x-o.x) + (y-o.y)*(y-o.y));   // r
+            this.y = toRad(o.theta(point(x,y)));
+            return this;
+        },
+        // Rotate point by angle around origin o.
+        rotate: function(o, angle) {
+            angle = (angle + 360) % 360;
+            this.toPolar(o);
+            this.y += toRad(angle);
+            var p = point.fromPolar(this.x, this.y, o);
+            this.x = p.x;
+            this.y = p.y;
+            return this;
+        },
+        // Move point on line starting from ref ending at me by
+        // distance distance.
+        move: function(ref, distance) {
+            var theta = toRad(point(ref).theta(this));
+            return this.offset(cos(theta) * distance, -sin(theta) * distance);
+        },
+        // Returns change in angle from my previous position (-dx, -dy) to my new position
+        // relative to ref point.
+        changeInAngle: function(dx, dy, ref) {
+            // Revert the translation and measure the change in angle around x-axis.
+            return point(this).offset(-dx, -dy).theta(ref) - this.theta(ref);
+        },
+        equals: function(p) {
+            return this.x === p.x && this.y === p.y;
+        }
+    };
+    // Alternative constructor, from polar coordinates.
+    // @param {number} r Distance.
+    // @param {number} angle Angle in radians.
+    // @param {point} [optional] o Origin.
+    point.fromPolar = function(r, angle, o) {
+        o = (o && point(o)) || point(0,0);
+        var x = abs(r * cos(angle));
+        var y = abs(r * sin(angle));
+        var deg = normalizeAngle(toDeg(angle));
+
+        if (deg < 90) y = -y;
+        else if (deg < 180) { x = -x; y = -y; }
+        else if (deg < 270) x = -x;
+        
+        return point(o.x + x, o.y + y);
+    };
+
+    // Create a point with random coordinates that fall into the range `[x1, x2]` and `[y1, y2]`.
+    point.random = function(x1, x2, y1, y2) {
+        return point(floor(random() * (x2 - x1 + 1) + x1), floor(random() * (y2 - y1 + 1) + y1));
+    };
+
+    // Line.
+    // -----
+    function line(p1, p2) {
+        if (!(this instanceof line))
+            return new line(p1, p2);
+            this.start = point(p1);
+        this.end = point(p2);
+    }
+    
+    line.prototype = {
+        toString: function() {
+	    return this.start.toString() + ' ' + this.end.toString();
+        },
+        // @return {double} length of the line
+        length: function() {
+            return sqrt(this.squaredLength());
+        },
+        // @return {integer} length without sqrt
+        // @note for applications where the exact length is not necessary (e.g. compare only)
+        squaredLength: function() {
+	    var x0 = this.start.x;
+            var y0 = this.start.y;
+	    var x1 = this.end.x;
+            var y1 = this.end.y;
+	    return (x0 -= x1)*x0 + (y0 -= y1)*y0;
+        },
+        // @return {point} my midpoint
+        midpoint: function() {
+	    return point((this.start.x + this.end.x) / 2,
+		         (this.start.y + this.end.y) / 2);
+        },
+        // @return {point} Point where I'm intersecting l.
+        // @see Squeak Smalltalk, LineSegment>>intersectionWith:
+        intersection: function(l) {
+	    var pt1Dir = point(this.end.x - this.start.x, this.end.y - this.start.y);
+	    var pt2Dir = point(l.end.x - l.start.x, l.end.y - l.start.y);
+	    var det = (pt1Dir.x * pt2Dir.y) - (pt1Dir.y * pt2Dir.x);
+	    var deltaPt = point(l.start.x - this.start.x, l.start.y - this.start.y);
+	    var alpha = (deltaPt.x * pt2Dir.y) - (deltaPt.y * pt2Dir.x);
+	    var beta = (deltaPt.x * pt1Dir.y) - (deltaPt.y * pt1Dir.x);
+
+	    if (det === 0 ||
+	        alpha * det < 0 ||
+	        beta * det < 0) {
+                // No intersection found.
+	        return null;	
+	    }
+	    if (det > 0){
+	        if (alpha > det || beta > det){
+		    return null;
+	        }
+	    } else {
+	        if (alpha < det || beta < det){
+		    return null;
+	        }
+	    }
+	    return point(this.start.x + (alpha * pt1Dir.x / det),
+		         this.start.y + (alpha * pt1Dir.y / det));
+        }
+    };
+
+    // Rectangle.
+    // ----------
+    function rect(x, y, w, h) {
+        if (!(this instanceof rect))
+            return new rect(x, y, w, h);
+        if (y === undefined) {
+            y = x.y;
+            w = x.width;
+            h = x.height;
+            x = x.x;        
+        }
+        this.x = x;
+        this.y = y;
+        this.width = w;
+        this.height = h;
+    }
+    
+    rect.prototype = {
+        toString: function() {
+	    return this.origin().toString() + ' ' + this.corner().toString();
+        },
+        origin: function() {
+            return point(this.x, this.y);
+        },
+        corner: function() {
+            return point(this.x + this.width, this.y + this.height);
+        },
+        topRight: function() {
+            return point(this.x + this.width, this.y);
+        },
+        bottomLeft: function() {
+            return point(this.x, this.y + this.height);
+        },
+        center: function() {
+            return point(this.x + this.width/2, this.y + this.height/2);
+        },
+        // @return {boolean} true if rectangles intersect
+        intersect: function(r) {
+	    var myOrigin = this.origin();
+	    var myCorner = this.corner();
+	    var rOrigin = r.origin();
+	    var rCorner = r.corner();
+            
+	    if (rCorner.x <= myOrigin.x ||
+	        rCorner.y <= myOrigin.y ||
+	        rOrigin.x >= myCorner.x ||
+	        rOrigin.y >= myCorner.y) return false;
+	    return true;
+        },
+        // @return {string} (left|right|top|bottom) side which is nearest to point
+        // @see Squeak Smalltalk, Rectangle>>sideNearestTo:
+        sideNearestToPoint: function(p) {
+            p = point(p);
+	    var distToLeft = p.x - this.x;
+	    var distToRight = (this.x + this.width) - p.x;
+	    var distToTop = p.y - this.y;
+	    var distToBottom = (this.y + this.height) - p.y;
+	    var closest = distToLeft;
+	    var side = 'left';
+            
+	    if (distToRight < closest) {
+	        closest = distToRight;
+	        side = 'right';
+	    }
+	    if (distToTop < closest) {
+	        closest = distToTop;
+	        side = 'top';
+	    }
+	    if (distToBottom < closest) {
+	        closest = distToBottom;
+	        side = 'bottom';
+	    }
+	    return side;
+        },
+        // @return {bool} true if point p is insight me
+        containsPoint: function(p) {
+            p = point(p);
+	    if (p.x >= this.x && p.x <= this.x + this.width &&
+	        p.y >= this.y && p.y <= this.y + this.height) {
+	        return true;
+	    }
+	    return false;
+        },
+        // @return {point} a point on my boundary nearest to p
+        // @see Squeak Smalltalk, Rectangle>>pointNearestTo:
+        pointNearestToPoint: function(p) {
+            p = point(p);
+	    if (this.containsPoint(p)) {
+	        var side = this.sideNearestToPoint(p);
+	        switch (side){
+	          case "right": return point(this.x + this.width, p.y);
+	          case "left": return point(this.x, p.y);
+	          case "bottom": return point(p.x, this.y + this.height);
+	          case "top": return point(p.x, this.y);
+	        }
+	    }
+	    return p.adhereToRect(this);
+        },
+        // Find point on my boundary where line starting
+        // from my center ending in point p intersects me.
+        // @param {number} angle If angle is specified, intersection with rotated rectangle is computed.
+        intersectionWithLineFromCenterToPoint: function(p, angle) {
+            p = point(p);
+	    var center = point(this.x + this.width/2, this.y + this.height/2);
+            var result;
+            if (angle) p.rotate(center, angle);
+            
+	    // (clockwise, starting from the top side)
+	    var sides = [
+	        line(this.origin(), this.topRight()),
+	        line(this.topRight(), this.corner()),
+	        line(this.corner(), this.bottomLeft()),
+	        line(this.bottomLeft(), this.origin())
+	    ];
+	    var connector = line(center, p);
+            
+	    for (var i = sides.length - 1; i >= 0; --i){
+	        var intersection = sides[i].intersection(connector);
+	        if (intersection !== null){
+		    result = intersection;
+                    break;
+	        }
+	    }
+            if (result && angle) result.rotate(center, -angle);
+            return result;
+        },
+        // Move and expand me.
+        // @param r {rectangle} representing deltas
+        moveAndExpand: function(r) {
+	    this.x += r.x;
+	    this.y += r.y;
+	    this.width += r.width;
+	    this.height += r.height;
+	    return this;
+        },
+        round: function(decimals) {
+            this.x = decimals ? this.x.toFixed(decimals) : round(this.x);
+            this.y = decimals ? this.y.toFixed(decimals) : round(this.y);
+            this.width = decimals ? this.width.toFixed(decimals) : round(this.width);
+            this.height = decimals ? this.height.toFixed(decimals) : round(this.height);
+            return this;
+        }
+    };
+
+    // Ellipse.
+    // --------
+    function ellipse(c, a, b) {
+        if (!(this instanceof ellipse))
+            return new ellipse(c, a, b);
+        c = point(c);
+        this.x = c.x;
+        this.y = c.y;
+        this.a = a;
+        this.b = b;
+    }
+
+    ellipse.prototype = {
+        toString: function() {
+            return point(this.x, this.y).toString() + ' ' + this.a + ' ' + this.b;
+        },
+        bbox: function() {
+	        return rect(this.x - this.a, this.y - this.b, 2*this.a, 2*this.b);
+        },
+        // Find point on me where line from my center to
+        // point p intersects my boundary.
+        // @param {number} angle If angle is specified, intersection with rotated ellipse is computed.
+        intersectionWithLineFromCenterToPoint: function(p, angle) {
+	    p = point(p);
+            if (angle) p.rotate(point(this.x, this.y), angle);
+            var dx = p.x - this.x;
+	    var dy = p.y - this.y;
+            var result;
+	    if (dx === 0) {
+	        result = this.bbox().pointNearestToPoint(p);
+                if (angle) return result.rotate(point(this.x, this.y), -angle);
+                return result;
+	    }
+	    var m = dy / dx;
+	    var mSquared = m * m;
+	    var aSquared = this.a * this.a;
+	    var bSquared = this.b * this.b;
+	    var x = sqrt(1 / ((1 / aSquared) + (mSquared / bSquared)));
+
+            x = dx < 0 ? -x : x;
+	    var y = m * x;
+	    result = point(this.x + x, this.y + y);
+            if (angle) return result.rotate(point(this.x, this.y), -angle);
+            return result;
+        }
+    };
+
+    // Bezier curve.
+    // -------------
+    var bezier = {
+        // Cubic Bezier curve path through points.
+        // Ported from C# implementation by Oleg V. Polikarpotchkin and Peter Lee (http://www.codeproject.com/KB/graphics/BezierSpline.aspx).
+        // @param {array} points Array of points through which the smooth line will go.
+        // @return {array} SVG Path commands as an array
+        curveThroughPoints: function(points) {
+            var controlPoints = this.getCurveControlPoints(points);
+            var path = ['M', points[0].x, points[0].y];
+
+            for (var i = 0; i < controlPoints[0].length; i++) {
+                path.push('C', controlPoints[0][i].x, controlPoints[0][i].y, controlPoints[1][i].x, controlPoints[1][i].y, points[i+1].x, points[i+1].y);        
+            }
+            return path;
+        },
+        
+        // Get open-ended Bezier Spline Control Points.
+        // @param knots Input Knot Bezier spline points (At least two points!).
+        // @param firstControlPoints Output First Control points. Array of knots.length - 1 length.
+        //  @param secondControlPoints Output Second Control points. Array of knots.length - 1 length.
+        getCurveControlPoints: function(knots) {
+            var firstControlPoints = [];
+            var secondControlPoints = [];
+            var n = knots.length - 1;
+            var i;
+
+            // Special case: Bezier curve should be a straight line.
+            if (n == 1) { 
+	        // 3P1 = 2P0 + P3
+	        firstControlPoints[0] = point((2 * knots[0].x + knots[1].x) / 3,
+	                                      (2 * knots[0].y + knots[1].y) / 3);
+	        // P2 = 2P1 – P0
+	        secondControlPoints[0] = point(2 * firstControlPoints[0].x - knots[0].x,
+	                                       2 * firstControlPoints[0].y - knots[0].y);
+	        return [firstControlPoints, secondControlPoints];
+            }
+            
+                // Calculate first Bezier control points.
+            // Right hand side vector.
+            var rhs = [];
+            
+            // Set right hand side X values.
+            for (i = 1; i < n - 1; i++) {
+                rhs[i] = 4 * knots[i].x + 2 * knots[i + 1].x;
+            }
+            rhs[0] = knots[0].x + 2 * knots[1].x;
+            rhs[n - 1] = (8 * knots[n - 1].x + knots[n].x) / 2.0;
+            // Get first control points X-values.
+            var x = this.getFirstControlPoints(rhs);
+            
+            // Set right hand side Y values.
+            for (i = 1; i < n - 1; ++i) {
+	        rhs[i] = 4 * knots[i].y + 2 * knots[i + 1].y;
+            }
+            rhs[0] = knots[0].y + 2 * knots[1].y;
+            rhs[n - 1] = (8 * knots[n - 1].y + knots[n].y) / 2.0;
+            // Get first control points Y-values.
+            var y = this.getFirstControlPoints(rhs);
+            
+            // Fill output arrays.
+            for (i = 0; i < n; i++) {
+	        // First control point.
+	        firstControlPoints.push(point(x[i], y[i]));
+	        // Second control point.
+	        if (i < n - 1) {
+	            secondControlPoints.push(point(2 * knots [i + 1].x - x[i + 1],
+                                                   2 * knots[i + 1].y - y[i + 1]));
+	        } else {
+	            secondControlPoints.push(point((knots[n].x + x[n - 1]) / 2,
+					           (knots[n].y + y[n - 1]) / 2));
+	        }
+            }
+            return [firstControlPoints, secondControlPoints];
+        },
+
+        // Solves a tridiagonal system for one of coordinates (x or y) of first Bezier control points.
+        // @param rhs Right hand side vector.
+        // @return Solution vector.
+        getFirstControlPoints: function(rhs) {
+            var n = rhs.length;
+            // `x` is a solution vector.
+            var x = [];
+            var tmp = [];
+            var b = 2.0;
+            
+            x[0] = rhs[0] / b;
+            // Decomposition and forward substitution.
+            for (var i = 1; i < n; i++) { 
+	        tmp[i] = 1 / b;
+	        b = (i < n - 1 ? 4.0 : 3.5) - tmp[i];
+	        x[i] = (rhs[i] - x[i - 1]) / b;
+            }
+            for (i = 1; i < n; i++) {
+                // Backsubstitution.
+	        x[n - i - 1] -= tmp[n - i] * x[n - i]; 
+            }
+            return x;
+        }
+    };
+
+    return {
+
+        toDeg: toDeg,
+        toRad: toRad,
+        snapToGrid: snapToGrid,
+	normalizeAngle: normalizeAngle,
+        point: point,
+        line: line,
+        rect: rect,
+        ellipse: ellipse,
+        bezier: bezier
+    }
+}));
+
+//      JointJS, the JavaScript diagramming library.
+//      (c) 2011-2013 client IO
+
+
+if (typeof exports === 'object') {
+
+    var joint = {
+        dia: {
+            Link: require('./joint.dia.link').Link,
+            Element: require('./joint.dia.element').Element
+        },
+        shapes: require('../plugins/shapes')
+    };
+    var Backbone = require('backbone');
+    var _ = require('lodash');
+    var g = require('./geometry').g;
+}
+
+
+
+joint.dia.GraphCells = Backbone.Collection.extend({
+
+    initialize: function() {
+        
+        // Backbone automatically doesn't trigger re-sort if models attributes are changed later when
+        // they're already in the collection. Therefore, we're triggering sort manually here.
+        this.on('change:z', this.sort, this);
+    },
+
+    model: function(attrs, options) {
+
+        if (attrs.type === 'link') {
+
+            return new joint.dia.Link(attrs, options);
+        }
+
+        var module = attrs.type.split('.')[0];
+        var entity = attrs.type.split('.')[1];
+
+        if (joint.shapes[module] && joint.shapes[module][entity]) {
+
+            return new joint.shapes[module][entity](attrs, options);
+        }
+        
+        return new joint.dia.Element(attrs, options);
+    },
+
+    // `comparator` makes it easy to sort cells based on their `z` index.
+    comparator: function(model) {
+
+        return model.get('z') || 0;
+    },
+
+    // Get all inbound and outbound links connected to the cell `model`.
+    getConnectedLinks: function(model, opt) {
+
+        opt = opt || {};
+
+        if (_.isUndefined(opt.inbound) && _.isUndefined(opt.outbound)) {
+            opt.inbound = opt.outbound = true;
+        }
+
+        var links = [];
+        
+        this.each(function(cell) {
+
+            var source = cell.get('source');
+            var target = cell.get('target');
+
+            if (source && source.id === model.id && opt.outbound) {
+                
+                links.push(cell);
+            }
+
+            if (target && target.id === model.id && opt.inbound) {
+
+                links.push(cell);
+            }
+        });
+
+        return links;
+    }
+});
+
+
+joint.dia.Graph = Backbone.Model.extend({
+
+    initialize: function() {
+
+        this.set('cells', new joint.dia.GraphCells);
+
+        // Make all the events fired in the `cells` collection available.
+        // to the outside world.
+        this.get('cells').on('all', this.trigger, this);
+        
+        this.get('cells').on('remove', this.removeCell, this);
+    },
+
+    toJSON: function() {
+
+        // Backbone does not recursively call `toJSON()` on attributes that are themselves models/collections.
+        // It just clones the attributes. Therefore, we must call `toJSON()` on the cells collection explicitely.
+        var json = Backbone.Model.prototype.toJSON.apply(this, arguments);
+        json.cells = this.get('cells').toJSON();
+        return json;
+    },
+
+    fromJSON: function(json) {
+
+        if (!json.cells) {
+
+            throw new Error('Graph JSON must contain cells array.');
+        }
+
+        var attrs = json;
+
+        // Cells are the only attribute that is being set differently, using `cells.add()`.
+        var cells = json.cells;
+        delete attrs.cells;
+        
+        this.set(attrs);
+        
+        this.resetCells(cells);
+    },
+
+    clear: function() {
+
+        this.get('cells').remove(this.get('cells').models);
+    },
+
+    _prepareCell: function(cell) {
+
+        if (cell instanceof Backbone.Model && _.isUndefined(cell.get('z'))) {
+
+            cell.set('z', this.get('cells').length, { silent: true });
+            
+        } else if (_.isUndefined(cell.z)) {
+
+            cell.z = this.get('cells').length;
+        }
+
+        return cell;
+    },
+    
+    addCell: function(cell, options) {
+
+        if (_.isArray(cell)) {
+
+            return this.addCells(cell, options);
+        }
+
+        this.get('cells').add(this._prepareCell(cell), options || {});
+
+        return this;
+    },
+
+    addCells: function(cells, options) {
+
+        _.each(cells, function(cell) { this.addCell(cell, options); }, this);
+
+        return this;
+    },
+
+    // When adding a lot of cells, it is much more efficient to
+    // reset the entire cells collection in one go.
+    // Useful for bulk operations and optimizations.
+    resetCells: function(cells) {
+        
+        this.get('cells').reset(_.map(cells, this._prepareCell, this));
+
+        return this;
+    },
+
+    removeCell: function(cell, collection, options) {
+
+        // Applications might provide a `disconnectLinks` option set to `true` in order to
+        // disconnect links when a cell is removed rather then removing them. The default
+        // is to remove all the associated links.
+        if (options && options.disconnectLinks) {
+            
+            this.disconnectLinks(cell);
+
+        } else {
+
+            this.removeLinks(cell);
+        }
+
+        // Silently remove the cell from the cells collection. Silently, because
+        // `joint.dia.Cell.prototype.remove` already triggers the `remove` event which is
+        // then propagated to the graph model. If we didn't remove the cell silently, two `remove` events
+        // would be triggered on the graph model.
+        this.get('cells').remove(cell, { silent: true });
+    },
+
+    // Get a cell by `id`.
+    getCell: function(id) {
+
+        return this.get('cells').get(id);
+    },
+
+    getElements: function() {
+
+        return this.get('cells').filter(function(cell) {
+
+            return cell instanceof joint.dia.Element;
+        });
+    },
+    
+    getLinks: function() {
+
+        return this.get('cells').filter(function(cell) {
+
+            return cell instanceof joint.dia.Link;
+        });
+    },
+
+    // Get all inbound and outbound links connected to the cell `model`.
+    getConnectedLinks: function(model, opt) {
+
+        return this.get('cells').getConnectedLinks(model, opt);
+    },
+
+    getNeighbors: function(el) {
+
+        var links = this.getConnectedLinks(el);
+        var neighbors = [];
+        var cells = this.get('cells');
+        
+        _.each(links, function(link) {
+
+            var source = link.get('source');
+            var target = link.get('target');
+
+            // Discard if it is a point.
+            if (!source.x) {
+                var sourceElement = cells.get(source.id);
+                if (sourceElement !== el) {
+
+                    neighbors.push(sourceElement);
+                }
+            }
+            if (!target.x) {
+                var targetElement = cells.get(target.id);
+                if (targetElement !== el) {
+
+                    neighbors.push(targetElement);
+                }
+            }
+        });
+
+        return neighbors;
+    },
+    
+    // Disconnect links connected to the cell `model`.
+    disconnectLinks: function(model) {
+
+        _.each(this.getConnectedLinks(model), function(link) {
+
+            link.set(link.get('source').id === model.id ? 'source' : 'target', g.point(0, 0));
+        });
+    },
+
+    // Remove links connected to the cell `model` completely.
+    removeLinks: function(model) {
+
+        _.invoke(this.getConnectedLinks(model), 'remove');
+    },
+
+    // Find all views at given point
+    findModelsFromPoint: function(p) {
+
+	return _.filter(this.getElements(), function(el) {
+	    return el.getBBox().containsPoint(p);
+	});
+    },
+
+
+    // Find all views in given area
+    findModelsInArea: function(r) {
+
+	return _.filter(this.getElements(), function(el) {
+	    return el.getBBox().intersect(r);
+	});
+    }
+
+});
+
+
+if (typeof exports === 'object') {
+
+    module.exports.Graph = joint.dia.Graph;
+}
+//      JointJS.
+//      (c) 2011-2013 client IO
+
+
+if (typeof exports === 'object') {
+
+    var joint = {
+        util: require('./core').util,
+        dia: {
+            Link: require('./joint.dia.link').Link
+        }
+    };
+    var Backbone = require('backbone');
+    var _ = require('lodash');
+}
+
+
+// joint.dia.Cell base model.
+// --------------------------
+
+joint.dia.Cell = Backbone.Model.extend({
+
+    // This is the same as Backbone.Model with the only difference that is uses _.merge
+    // instead of just _.extend. The reason is that we want to mixin attributes set in upper classes.
+    constructor: function(attributes, options) {
+
+        var defaults;
+        var attrs = attributes || {};
+        this.cid = _.uniqueId('c');
+        this.attributes = {};
+        if (options && options.collection) this.collection = options.collection;
+        if (options && options.parse) attrs = this.parse(attrs, options) || {};
+        if (defaults = _.result(this, 'defaults')) {
+            //<custom code>
+            // Replaced the call to _.defaults with _.merge.
+            attrs = _.merge({}, defaults, attrs);
+            //</custom code>
+        }
+        this.set(attrs, options);
+        this.changed = {};
+        this.initialize.apply(this, arguments);
+    },
+
+    toJSON: function() {
+
+        var defaultAttrs = this.constructor.prototype.defaults.attrs || {};
+        var attrs = this.attributes.attrs;
+        var finalAttrs = {};
+
+        // Loop through all the attributes and
+        // omit the default attributes as they are implicitly reconstructable by the cell 'type'.
+        _.each(attrs, function(attr, selector) {
+
+            var defaultAttr = defaultAttrs[selector];
+
+            _.each(attr, function(value, name) {
+                
+                // attr is mainly flat though it might have one more level (consider the `style` attribute).
+                // Check if the `value` is object and if yes, go one level deep.
+                if (_.isObject(value) && !_.isArray(value)) {
+                    
+                    _.each(value, function(value2, name2) {
+
+                        if (!defaultAttr || !defaultAttr[name] || !_.isEqual(defaultAttr[name][name2], value2)) {
+
+                            finalAttrs[selector] = finalAttrs[selector] || {};
+                            (finalAttrs[selector][name] || (finalAttrs[selector][name] = {}))[name2] = value2;
+                        }
+                    });
+
+                } else if (!defaultAttr || !_.isEqual(defaultAttr[name], value)) {
+                    // `value` is not an object, default attribute for such a selector does not exist
+                    // or it is different than the attribute value set on the model.
+
+                    finalAttrs[selector] = finalAttrs[selector] || {};
+                    finalAttrs[selector][name] = value;
+                }
+            });
+        });
+
+        var attributes = _.cloneDeep(_.omit(this.attributes, 'attrs'));
+        //var attributes = JSON.parse(JSON.stringify(_.omit(this.attributes, 'attrs')));
+        attributes.attrs = finalAttrs;
+
+        return attributes;
+    },
+
+    initialize: function(options) {
+
+        if (!options || !options.id) {
+
+            this.set('id', joint.util.uuid(), { silent: true });
+        }
+
+	this._transitionIds = {};
+
+        // Collect ports defined in `attrs` and keep collecting whenever `attrs` object changes.
+        this.processPorts();
+        this.on('change:attrs', this.processPorts, this);
+    },
+
+    processPorts: function() {
+
+        // Whenever `attrs` changes, we extract ports from the `attrs` object and store it
+        // in a more accessible way. Also, if any port got removed and there were links that had `target`/`source`
+        // set to that port, we remove those links as well (to follow the same behaviour as
+        // with a removed element).
+
+        var previousPorts = this.ports;
+
+        // Collect ports from the `attrs` object.
+        var ports = {};
+        _.each(this.get('attrs'), function(attrs, selector) {
+
+            if (attrs.port) {
+
+                // `port` can either be directly an `id` or an object containing an `id` (and potentially other data).
+                if (!_.isUndefined(attrs.port.id)) {
+                    ports[attrs.port.id] = attrs.port;
+                } else {
+                    ports[attrs.port] = { id: attrs.port };
+                }
+            }
+        });
+
+        // Collect ports that have been removed (compared to the previous ports) - if any.
+        // Use hash table for quick lookup.
+        var removedPorts = {};
+        _.each(previousPorts, function(port, id) {
+
+            if (!ports[id]) removedPorts[id] = true;
+        });
+
+        // Remove all the incoming/outgoing links that have source/target port set to any of the removed ports.
+        if (this.collection && !_.isEmpty(removedPorts)) {
+            
+            var inboundLinks = this.collection.getConnectedLinks(this, { inbound: true });
+            _.each(inboundLinks, function(link) {
+
+                if (removedPorts[link.get('target').port]) link.remove();
+            });
+
+            var outboundLinks = this.collection.getConnectedLinks(this, { outbound: true });
+            _.each(outboundLinks, function(link) {
+
+                if (removedPorts[link.get('source').port]) link.remove();
+            });
+        }
+
+        // Update the `ports` object.
+        this.ports = ports;
+    },
+
+    remove: function(options) {
+
+	var collection = this.collection;
+
+	if (collection) {
+	    collection.trigger('batch:start');
+	}
+
+        // First, unembed this cell from its parent cell if there is one.
+        var parentCellId = this.get('parent');
+        if (parentCellId) {
+            
+            var parentCell = this.collection && this.collection.get(parentCellId);
+            parentCell.unembed(this);
+        }
+        
+        _.invoke(this.getEmbeddedCells(), 'remove', options);
+        
+        this.trigger('remove', this, this.collection, options);
+
+	if (collection) {
+	    collection.trigger('batch:stop');
+	}
+    },
+
+    toFront: function() {
+
+        if (this.collection) {
+
+            this.set('z', (this.collection.last().get('z') || 0) + 1);
+        }
+    },
+    
+    toBack: function() {
+
+        if (this.collection) {
+            
+            this.set('z', (this.collection.first().get('z') || 0) - 1);
+        }
+    },
+
+    embed: function(cell) {
+
+	if (this.get('parent') == cell.id) {
+
+	    throw new Error('Recursive embedding not allowed.');
+
+	} else {
+
+	    this.trigger('batch:start');
+
+	    cell.set('parent', this.id);
+	    this.set('embeds', _.uniq((this.get('embeds') || []).concat([cell.id])));
+
+	    this.trigger('batch:stop');
+	}
+    },
+
+    unembed: function(cell) {
+
+	this.trigger('batch:start');
+
+        var cellId = cell.id;
+        cell.unset('parent');
+
+        this.set('embeds', _.without(this.get('embeds'), cellId));
+
+	this.trigger('batch:stop');
+    },
+
+    getEmbeddedCells: function() {
+
+        // Cell models can only be retrieved when this element is part of a collection.
+        // There is no way this element knows about other cells otherwise.
+        // This also means that calling e.g. `translate()` on an element with embeds before
+        // adding it to a graph does not translate its embeds.
+        if (this.collection) {
+
+            return _.map(this.get('embeds') || [], function(cellId) {
+
+                return this.collection.get(cellId);
+                
+            }, this);
+        }
+        return [];
+    },
+
+    clone: function(opt) {
+
+        opt = opt || {};
+
+        var clone = Backbone.Model.prototype.clone.apply(this, arguments);
+        
+        // We don't want the clone to have the same ID as the original.
+        clone.set('id', joint.util.uuid(), { silent: true });
+        clone.set('embeds', '');
+
+        if (!opt.deep) return clone;
+
+        // The rest of the `clone()` method deals with embeds. If `deep` option is set to `true`,
+        // the return value is an array of all the embedded clones created.
+
+        var embeds = this.getEmbeddedCells();
+
+        var clones = [clone];
+
+        // This mapping stores cloned links under the `id`s of they originals.
+        // This prevents cloning a link more then once. Consider a link 'self loop' for example.
+        var linkCloneMapping = {};
+        
+        _.each(embeds, function(embed) {
+
+            var embedClones = embed.clone({ deep: true });
+
+            // Embed the first clone returned from `clone({ deep: true })` above. The first
+            // cell is always the clone of the cell that called the `clone()` method, i.e. clone of `embed` in this case.
+            clone.embed(embedClones[0]);
+
+            _.each(embedClones, function(embedClone) {
+
+                clones.push(embedClone);
+
+                // Skip links. Inbound/outbound links are not relevant for them.
+                if (embedClone instanceof joint.dia.Link) {
+
+                    return;
+                }
+
+                // Collect all inbound links, clone them (if not done already) and set their target to the `embedClone.id`.
+                var inboundLinks = this.collection.getConnectedLinks(embed, { inbound: true });
+
+                _.each(inboundLinks, function(link) {
+
+                    var linkClone = linkCloneMapping[link.id] || link.clone();
+
+                    // Make sure we don't clone a link more then once.
+                    linkCloneMapping[link.id] = linkClone;
+
+                    var target = _.clone(linkClone.get('target'));
+                    target.id = embedClone.id;
+                    linkClone.set('target', target);
+                });
+
+                // Collect all inbound links, clone them (if not done already) and set their source to the `embedClone.id`.
+                var outboundLinks = this.collection.getConnectedLinks(embed, { outbound: true });
+
+                _.each(outboundLinks, function(link) {
+
+                    var linkClone = linkCloneMapping[link.id] || link.clone();
+
+                    // Make sure we don't clone a link more then once.
+                    linkCloneMapping[link.id] = linkClone;
+
+                    var source = _.clone(linkClone.get('source'));
+                    source.id = embedClone.id;
+                    linkClone.set('source', source);
+                });
+
+            }, this);
+            
+        }, this);
+
+        // Add link clones to the array of all the new clones.
+        clones = clones.concat(_.values(linkCloneMapping));
+
+        return clones;
+    },
+
+    // A convenient way to set nested attributes.
+    attr: function(attrs, value, opt) {
+
+        var currentAttrs = this.get('attrs');
+        var delim = '/';
+        
+        if (_.isString(attrs)) {
+            // Get/set an attribute by a special path syntax that delimits
+            // nested objects by the colon character.
+
+            if (value) {
+
+                var attr = {};
+                joint.util.setByPath(attr, attrs, value, delim);
+                return this.set('attrs', _.merge({}, currentAttrs, attr), opt);
+                
+            } else {
+                
+                return joint.util.getByPath(currentAttrs, attrs, delim);
+            }
+        }
+        
+        return this.set('attrs', _.merge({}, currentAttrs, attrs), value);
+    },
+
+    transition: function(path, value, opt, delim) {
+
+	delim = delim || '/';
+
+	var defaults = {
+	    duration: 100,
+	    delay: 10,
+	    timingFunction: joint.util.timing.linear,
+	    valueFunction: joint.util.interpolate.number
+	};
+
+	opt = _.extend(defaults, opt);
+
+	var pathArray = path.split(delim);
+        var property = pathArray[0];
+	var isPropertyNested = pathArray.length > 1;
+	var firstFrameTime = 0;
+	var interpolatingFunction;
+
+	var setter = _.bind(function(runtime) {
+
+	    var id, progress, propertyValue, status;
+
+	    firstFrameTime = firstFrameTime || runtime;
+	    runtime -= firstFrameTime;
+	    progress = runtime / opt.duration;
+
+	    if (progress < 1) {
+		this._transitionIds[path] = id = joint.util.nextFrame(setter);
+	    } else {
+		progress = 1;
+		delete this._transitionIds[path];
+	    }
+
+	    propertyValue = interpolatingFunction(opt.timingFunction(progress));
+
+	    if (isPropertyNested) {
+		var nestedPropertyValue = joint.util.setByPath({}, path, propertyValue, delim)[property];
+		propertyValue = _.merge({}, this.get(property), nestedPropertyValue);
+	    }
+
+	    opt.transitionId = id;
+
+	    this.set(property, propertyValue, opt);
+
+	    if (!id) this.trigger('transition:end', this, path);
+
+	}, this);
+
+	var initiator =_.bind(function(callback) {
+
+	    this.stopTransitions(path);
+
+	    interpolatingFunction = opt.valueFunction(joint.util.getByPath(this.attributes, path, delim), value);
+
+	    this._transitionIds[path] = joint.util.nextFrame(callback);
+
+	    this.trigger('transition:start', this, path);
+
+	}, this);
+
+	return _.delay(initiator, opt.delay, setter);
+    },
+
+    getTransitions: function() {
+	return _.keys(this._transitionIds);
+    },
+
+    stopTransitions: function(path, delim) {
+
+	delim = delim || '/';
+
+	var pathArray = path && path.split(delim);
+
+	_(this._transitionIds).keys().filter(pathArray && function(key) {
+
+	    return _.isEqual(pathArray, key.split(delim).slice(0, pathArray.length));
+
+	}).each(function(key) {
+
+	    joint.util.cancelFrame(this._transitionIds[key]);
+
+	    delete this._transitionIds[key];
+
+	    this.trigger('transition:end', this, key);
+
+	}, this);
+    }
+});
+
+// joint.dia.CellView base view and controller.
+// --------------------------------------------
+
+// This is the base view and controller for `joint.dia.ElementView` and `joint.dia.LinkView`.
+
+joint.dia.CellView = Backbone.View.extend({
+
+    tagName: 'g',
+
+    attributes: function() {
+
+        return { 'model-id': this.model.id }
+    },
+
+    initialize: function() {
+
+        _.bindAll(this, 'remove', 'update');
+
+        // Store reference to this to the <g> DOM element so that the view is accessible through the DOM tree.
+        this.$el.data('view', this);
+
+	this.listenTo(this.model, 'remove', this.remove);
+	this.listenTo(this.model, 'change:attrs', this.update);
+    },
+
+    _configure: function(options) {
+
+        // Make sure a global unique id is assigned to this view. Store this id also to the properties object.
+        // The global unique id makes sure that the same view can be rendered on e.g. different machines and
+        // still be associated to the same object among all those clients. This is necessary for real-time
+        // collaboration mechanism.
+        options.id = options.id || joint.util.guid(this);
+        
+        Backbone.View.prototype._configure.apply(this, arguments);
+    },
+
+    // Override the Backbone `_ensureElement()` method in order to create a `<g>` node that wraps
+    // all the nodes of the Cell view.
+    _ensureElement: function() {
+
+        var el;
+
+        if (!this.el) {
+
+            var attrs = _.extend({ id: this.id }, _.result(this, 'attributes'));
+            if (this.className) attrs['class'] = _.result(this, 'className');
+            el = V(_.result(this, 'tagName'), attrs).node;
+
+        } else {
+
+            el = _.result(this, 'el')
+        }
+
+        this.setElement(el, false);
+    },
+    
+    findBySelector: function(selector) {
+
+        // These are either descendants of `this.$el` of `this.$el` itself. 
+       // `.` is a special selector used to select the wrapping `<g>` element.
+        var $selected = selector === '.' ? this.$el : this.$el.find(selector);
+        return $selected;
+    },
+
+    notify: function(evt) {
+
+        if (this.paper) {
+
+            var args = Array.prototype.slice.call(arguments, 1);
+
+            // Trigger the event on both the element itself and also on the paper.
+            this.trigger.apply(this, [evt].concat(args));
+            
+            // Paper event handlers receive the view object as the first argument.
+            this.paper.trigger.apply(this.paper, [evt, this].concat(args));
+        }
+    },
+
+    getStrokeBBox: function(el) {
+        // Return a bounding box rectangle that takes into account stroke.
+        // Note that this is a naive and ad-hoc implementation that does not
+        // works only in certain cases and should be replaced as soon as browsers will
+        // start supporting the getStrokeBBox() SVG method.
+        // @TODO any better solution is very welcome!
+
+        var isMagnet = !!el;
+        
+        el = el || this.el;
+        var bbox = V(el).bbox(false, this.paper.viewport);
+
+        var strokeWidth;
+        if (isMagnet) {
+
+            strokeWidth = V(el).attr('stroke-width');
+            
+        } else {
+
+            strokeWidth = this.model.attr('rect/stroke-width') || this.model.attr('circle/stroke-width') || this.model.attr('ellipse/stroke-width') || this.model.attr('path/stroke-width');
+        }
+
+        strokeWidth = parseFloat(strokeWidth) || 0;
+
+        return g.rect(bbox).moveAndExpand({ x: -strokeWidth/2, y: -strokeWidth/2, width: strokeWidth, height: strokeWidth });
+    },
+    
+    getBBox: function() {
+
+        return V(this.el).bbox();
+    },
+
+    highlight: function(el) {
+
+        el = !el ? this.el : this.$(el)[0] || this.el;
+
+        V(el).addClass('highlighted');
+    },
+
+    unhighlight: function(el) {
+
+        el = !el ? this.el : this.$(el)[0] || this.el;
+
+        V(el).removeClass('highlighted');
+    },
+
+    // Find the closest element that has the `magnet` attribute set to `true`. If there was not such
+    // an element found, return the root element of the cell view.
+    findMagnet: function(el) {
+
+        var $el = this.$(el);
+
+        if ($el.length === 0 || $el[0] === this.el) {
+
+            // If the overall cell has set `magnet === false`, then return `undefined` to
+            // announce there is no magnet found for this cell.
+            // This is especially useful to set on cells that have 'ports'. In this case,
+            // only the ports have set `magnet === true` and the overall element has `magnet === false`.
+            var attrs = this.model.get('attrs') || {};
+            if (attrs['.'] && attrs['.']['magnet'] === false) {
+                return undefined;
+            }
+
+            return this.el;
+        }
+
+        if ($el.attr('magnet')) {
+
+            return $el[0];
+        }
+
+        return this.findMagnet($el.parent());
+    },
+
+    // `selector` is a CSS selector or `'.'`. `filter` must be in the special JointJS filter format:
+    // `{ name: <name of the filter>, args: { <arguments>, ... }`.
+    // An example is: `{ filter: { name: 'blur', args: { radius: 5 } } }`.
+    applyFilter: function(selector, filter) {
+
+        var $selected = this.findBySelector(selector);
+
+        // Generate a hash code from the stringified filter definition. This gives us
+        // a unique filter ID for different definitions.
+        var filterId = filter.name + this.paper.svg.id + joint.util.hashCode(JSON.stringify(filter));
+
+        // If the filter already exists in the document,
+        // we're done and we can just use it (reference it using `url()`).
+        // If not, create one.
+        if (!this.paper.svg.getElementById(filterId)) {
+
+            var filterSVGString = joint.util.filter[filter.name] && joint.util.filter[filter.name](filter.args || {});
+            if (!filterSVGString) {
+                throw new Error('Non-existing filter ' + filter.name);
+            }
+            var filterElement = V(filterSVGString);
+            filterElement.attr('filterUnits', 'userSpaceOnUse');
+            filterElement.node.id = filterId;
+            V(this.paper.svg).defs().append(filterElement);
+        }
+
+        $selected.each(function() {
+            
+            V(this).attr('filter', 'url(#' + filterId + ')');
+        });
+    },
+
+    // `selector` is a CSS selector or `'.'`. `attr` is either a `'fill'` or `'stroke'`.
+    // `gradient` must be in the special JointJS gradient format:
+    // `{ type: <linearGradient|radialGradient>, stops: [ { offset: <offset>, color: <color> }, ... ]`.
+    // An example is: `{ fill: { type: 'linearGradient', stops: [ { offset: '10%', color: 'green' }, { offset: '50%', color: 'blue' } ] } }`.
+    applyGradient: function(selector, attr, gradient) {
+
+        var $selected = this.findBySelector(selector);
+
+        // Generate a hash code from the stringified filter definition. This gives us
+        // a unique filter ID for different definitions.
+        var gradientId = gradient.type + this.paper.svg.id + joint.util.hashCode(JSON.stringify(gradient));
+
+        // If the gradient already exists in the document,
+        // we're done and we can just use it (reference it using `url()`).
+        // If not, create one.
+        if (!this.paper.svg.getElementById(gradientId)) {
+
+            var gradientSVGString = [
+                '<' + gradient.type + '>',
+                _.map(gradient.stops, function(stop) {
+                    return '<stop offset="' + stop.offset + '" stop-color="' + stop.color + '" stop-opacity="' + (_.isFinite(stop.opacity) ? stop.opacity : 1) + '" />'
+                }).join(''),
+                '</' + gradient.type + '>'
+            ].join('');
+            
+            var gradientElement = V(gradientSVGString);
+            if (gradient.attrs) { gradientElement.attr(gradient.attrs); }
+            gradientElement.node.id = gradientId;
+            V(this.paper.svg).defs().append(gradientElement);
+        }
+
+        $selected.each(function() {
+            
+            V(this).attr(attr, 'url(#' + gradientId + ')');
+        });
+    },
+
+    // Construct a unique selector for the `el` element within this view.
+    // `selector` is being collected through the recursive call. No value for `selector` is expected when using this method.
+    getSelector: function(el, selector) {
+
+        if (el === this.el) {
+
+            return selector;
+        }
+
+        var index = $(el).index();
+
+        selector = el.tagName + ':nth-child(' + (index + 1) + ')' + ' ' + (selector || '');
+
+        return this.getSelector($(el).parent()[0], selector + ' ');
+    },
+
+    // Interaction. The controller part.
+    // ---------------------------------
+
+    // Interaction is handled by the paper and delegated to the view in interest.
+    // `x` & `y` parameters passed to these functions represent the coordinates already snapped to the paper grid.
+    // If necessary, real coordinates can be obtained from the `evt` event object.
+
+    // These functions are supposed to be overriden by the views that inherit from `joint.dia.Cell`,
+    // i.e. `joint.dia.Element` and `joint.dia.Link`.
+
+    pointerdblclick: function(evt, x, y) {
+
+        this.notify('cell:pointerdblclick', evt, x, y);
+    },
+    
+    pointerdown: function(evt, x, y) {
+
+	if (this.model.collection) {
+	    this.model.trigger('batch:start');
+	    this._collection = this.model.collection;
+	}
+
+        this.notify('cell:pointerdown', evt, x, y);
+    },
+    
+    pointermove: function(evt, x, y) {
+
+        this.notify('cell:pointermove', evt, x, y);
+    },
+    
+    pointerup: function(evt, x, y) {
+
+        this.notify('cell:pointerup', evt, x, y);
+
+	if (this._collection) {
+	    // we don't want to trigger event on model as model doesn't
+	    // need to be member of collection anymore (remove)
+	    this._collection.trigger('batch:stop');
+	    delete this._collection;
+	}
+
+    }
+});
+
+
+if (typeof exports === 'object') {
+
+    module.exports.Cell = joint.dia.Cell;
+    module.exports.CellView = joint.dia.CellView;
+}
+
+//      JointJS library.
+//      (c) 2011-2013 client IO
+
+
+if (typeof exports === 'object') {
+
+    var joint = {
+        util: require('./core').util,
+        dia: {
+            Cell: require('./joint.dia.cell').Cell,
+            CellView: require('./joint.dia.cell').CellView
+        }
+    };
+    var Backbone = require('backbone');
+    var _ = require('lodash');
+}
+
+
+// joint.dia.Element base model.
+// -----------------------------
+
+joint.dia.Element = joint.dia.Cell.extend({
+
+    defaults: {
+        position: { x: 0, y: 0 },
+	size: { width: 1, height: 1 },
+        angle: 0
+    },
+
+    position: function(x, y) {
+
+        this.set('position', { x: x, y: y });
+    },
+    
+    translate: function(tx, ty, opt) {
+
+        ty = ty || 0;
+
+        if (tx === 0 && ty === 0) {
+            // Like nothing has happened.
+            return this;
+        }
+
+        var position = this.get('position') || { x: 0, y: 0 };
+	var translatedPosition = { x: position.x + tx || 0, y: position.y + ty || 0 };
+
+	if (opt && opt.transition) {
+
+	    if (!_.isObject(opt.transition)) opt.transition = {};
+
+	    this.transition('position', translatedPosition, _.extend({}, opt.transition, {
+		valueFunction: joint.util.interpolate.object
+	    }));
+
+	} else {
+
+            this.set('position', translatedPosition, opt);
+
+            // Recursively call `translate()` on all the embeds cells.
+            _.invoke(this.getEmbeddedCells(), 'translate', tx, ty, opt);
+	}
+
+        return this;
+    },
+
+    resize: function(width, height) {
+
+	this.trigger('batch:start');
+        this.set('size', { width: width, height: height });
+	this.trigger('batch:stop');
+
+	return this;
+    },
+
+    rotate: function(angle, absolute) {
+
+        return this.set('angle', absolute ? angle : ((this.get('angle') || 0) + angle) % 360);
+    },
+
+    getBBox: function() {
+
+	var position = this.get('position');
+	var size = this.get('size');
+
+	return g.rect(position.x, position.y, size.width, size.height);
+    }
+});
+
+// joint.dia.Element base view and controller.
+// -------------------------------------------
+
+joint.dia.ElementView = joint.dia.CellView.extend({
+
+    className: function() {
+        return 'element ' + this.model.get('type').split('.').join(' ');
+    },
+
+    initialize: function() {
+
+        _.bindAll(this, 'translate', 'resize', 'rotate');
+
+        joint.dia.CellView.prototype.initialize.apply(this, arguments);
+        
+	this.listenTo(this.model, 'change:position', this.translate);
+	this.listenTo(this.model, 'change:size', this.resize);
+	this.listenTo(this.model, 'change:angle', this.rotate);
+    },
+
+    // Default is to process the `attrs` object and set attributes on subelements based on the selectors.
+    update: function(cell, renderingOnlyAttrs) {
+
+        var allAttrs = this.model.get('attrs');
+
+        var rotatable = V(this.$('.rotatable')[0]);
+        if (rotatable) {
+
+            var rotation = rotatable.attr('transform');
+            rotatable.attr('transform', '');
+        }
+        
+        var relativelyPositioned = [];
+
+        _.each(renderingOnlyAttrs || allAttrs, function(attrs, selector) {
+
+            // Elements that should be updated.
+            var $selected = this.findBySelector(selector);
+
+            // No element matched by the `selector` was found. We're done then.
+            if ($selected.length === 0) return;
+
+            // Special attributes are treated by JointJS, not by SVG.
+            var specialAttributes = ['style', 'text', 'html', 'ref-x', 'ref-y', 'ref-dx', 'ref-dy', 'ref', 'x-alignment', 'y-alignment', 'port'];
+
+            // If the `filter` attribute is an object, it is in the special JointJS filter format and so
+            // it becomes a special attribute and is treated separately.
+            if (_.isObject(attrs.filter)) {
+
+                specialAttributes.push('filter');
+                this.applyFilter(selector, attrs.filter);
+            }
+
+            // If the `fill` or `stroke` attribute is an object, it is in the special JointJS gradient format and so
+            // it becomes a special attribute and is treated separately.
+            if (_.isObject(attrs.fill)) {
+
+                specialAttributes.push('fill');
+                this.applyGradient(selector, 'fill', attrs.fill);
+            }
+            if (_.isObject(attrs.stroke)) {
+
+                specialAttributes.push('stroke');
+                this.applyGradient(selector, 'stroke', attrs.stroke);
+            }
+            
+            // Set regular attributes on the `$selected` subelement. Note that we cannot use the jQuery attr()
+            // method as some of the attributes might be namespaced (e.g. xlink:href) which fails with jQuery attr().
+            var finalAttributes = _.omit(attrs, specialAttributes);
+            
+            $selected.each(function() {
+                
+                V(this).attr(finalAttributes);
+            });
+
+            // `port` attribute contains the `id` of the port that the underlying magnet represents.
+            if (attrs.port) {
+
+                $selected.attr('port', _.isUndefined(attrs.port.id) ? attrs.port : attrs.port.id);
+            }
+
+            // `style` attribute is special in the sense that it sets the CSS style of the subelement.
+            if (attrs.style) {
+
+                $selected.css(attrs.style);
+            }
+            
+            // Make special case for `text` attribute. So that we can set text content of the `<text>` element
+            // via the `attrs` object as well.
+            if (!_.isUndefined(attrs.text)) {
+
+                $selected.each(function() {
+
+                    V(this).text(attrs.text + '');
+                });
+            }
+
+            if (!_.isUndefined(attrs.html)) {
+
+                $selected.each(function() {
+
+                    $(this).html(attrs.html + '');
+                });
+            }
+            
+            // Special `ref-x` and `ref-y` attributes make it possible to set both absolute or
+            // relative positioning of subelements.
+            if (!_.isUndefined(attrs['ref-x']) ||
+                !_.isUndefined(attrs['ref-y']) ||
+                !_.isUndefined(attrs['ref-dx']) ||
+                !_.isUndefined(attrs['ref-dy']) ||
+		!_.isUndefined(attrs['x-alignment']) ||
+		!_.isUndefined(attrs['y-alignment'])
+               ) {
+
+                relativelyPositioned.push($selected);
+            }
+            
+        }, this);
+
+        // We don't want the sub elements to affect the bounding box of the root element when
+        // positioning the sub elements relatively to the bounding box.
+        //_.invoke(relativelyPositioned, 'hide');
+        //_.invoke(relativelyPositioned, 'show');
+
+        // Note that we're using the bounding box without transformation because we are already inside
+        // a transformed coordinate system.
+        var bbox = this.el.getBBox();        
+
+        renderingOnlyAttrs = renderingOnlyAttrs || {};
+
+        _.each(relativelyPositioned, function($el) {
+
+            // if there was a special attribute affecting the position amongst renderingOnlyAttributes
+            // we have to merge it with rest of the element's attributes as they are necessary
+            // to update the position relatively (i.e `ref`)
+            var renderingOnlyElAttrs = renderingOnlyAttrs[$el.selector];
+            var elAttrs = renderingOnlyElAttrs
+                ? _.merge({}, allAttrs[$el.selector], renderingOnlyElAttrs)
+                : allAttrs[$el.selector];
+
+            this.positionRelative($el, bbox, elAttrs);
+            
+        }, this);
+
+        if (rotatable) {
+
+            rotatable.attr('transform', rotation || '');
+        }
+    },
+
+    positionRelative: function($el, bbox, elAttrs) {
+
+        var ref = elAttrs['ref'];
+        var refX = parseFloat(elAttrs['ref-x']);
+        var refY = parseFloat(elAttrs['ref-y']);
+        var refDx = parseFloat(elAttrs['ref-dx']);
+        var refDy = parseFloat(elAttrs['ref-dy']);
+        var yAlignment = elAttrs['y-alignment'];
+        var xAlignment = elAttrs['x-alignment'];
+
+        // `ref` is the selector of the reference element. If no `ref` is passed, reference
+        // element is the root element.
+
+        var isScalable = _.contains(_.pluck(_.pluck($el.parents('g'), 'className'), 'baseVal'), 'scalable');
+
+        if (ref) {
+
+            // Get the bounding box of the reference element relative to the root `<g>` element.
+            bbox = V(this.findBySelector(ref)[0]).bbox(false, this.el);
+        }
+
+        var vel = V($el[0]);
+
+        // Remove the previous translate() from the transform attribute and translate the element
+        // relative to the root bounding box following the `ref-x` and `ref-y` attributes.
+        if (vel.attr('transform')) {
+
+            vel.attr('transform', vel.attr('transform').replace(/translate\([^)]*\)/g, '') || '');
+        }
+
+        function isDefined(x) {
+            return _.isNumber(x) && !_.isNaN(x);
+        }
+
+        // The final translation of the subelement.
+        var tx = 0;
+        var ty = 0;
+
+        // `ref-dx` and `ref-dy` define the offset of the subelement relative to the right and/or bottom
+        // coordinate of the reference element.
+        if (isDefined(refDx)) {
+
+            if (isScalable) {
+
+                // Compensate for the scale grid in case the elemnt is in the scalable group.
+                var scale = V(this.$('.scalable')[0]).scale();
+                tx = bbox.x + bbox.width + refDx / scale.sx;
+                
+            } else {
+                
+                tx = bbox.x + bbox.width + refDx;
+            }
+        }
+        if (isDefined(refDy)) {
+
+            if (isScalable) {
+                
+                // Compensate for the scale grid in case the elemnt is in the scalable group.
+                var scale = V(this.$('.scalable')[0]).scale();
+                ty = bbox.y + bbox.height + refDy / scale.sy;
+            } else {
+                
+                ty = bbox.y + bbox.height + refDy;
+            }
+        }
+
+        // if `refX` is in [0, 1] then `refX` is a fraction of bounding box width
+        // if `refX` is < 0 then `refX`'s absolute values is the right coordinate of the bounding box
+        // otherwise, `refX` is the left coordinate of the bounding box
+        // Analogical rules apply for `refY`.
+        if (isDefined(refX)) {
+
+            if (refX > 0 && refX < 1) {
+
+                tx = bbox.x + bbox.width * refX;
+
+            } else if (isScalable) {
+
+                // Compensate for the scale grid in case the elemnt is in the scalable group.
+                var scale = V(this.$('.scalable')[0]).scale();
+                tx = bbox.x + refX / scale.sx;
+                
+            } else {
+
+                tx = bbox.x + refX;
+            }
+        }
+        if (isDefined(refY)) {
+
+            if (refY > 0 && refY < 1) {
+                
+                ty = bbox.y + bbox.height * refY;
+                
+            } else if (isScalable) {
+
+                // Compensate for the scale grid in case the elemnt is in the scalable group.
+                var scale = V(this.$('.scalable')[0]).scale();
+                ty = bbox.y + refY / scale.sy;
+                
+            } else {
+
+                ty = bbox.y + refY;
+            }
+        }
+
+	var velbbox = vel.bbox(false, this.paper.viewport);
+        // `y-alignment` when set to `middle` causes centering of the subelement around its new y coordinate.
+        if (yAlignment === 'middle') {
+
+            ty -= velbbox.height/2;
+            
+        } else if (isDefined(yAlignment)) {
+
+            ty += (yAlignment > 0 && yAlignment < 1) ?  velbbox.height * yAlignment : yAlignment;
+        }
+
+        // `x-alignment` when set to `middle` causes centering of the subelement around its new x coordinate.
+        if (xAlignment === 'middle') {
+            
+            tx -= velbbox.width/2;
+            
+        } else if (isDefined(xAlignment)) {
+
+            tx += (xAlignment > 0 && xAlignment < 1) ?  velbbox.width * xAlignment : xAlignment;
+        }
+
+        vel.translate(tx, ty);
+    },
+
+    // `prototype.markup` is rendered by default. Set the `markup` attribute on the model if the
+    // default markup is not desirable.
+    render: function() {
+
+        var markup = this.model.markup || this.model.get('markup');
+        
+        if (markup) {
+
+            var nodes = V(markup);
+            V(this.el).append(nodes);
+            
+        } else {
+
+            throw new Error('properties.markup is missing while the default render() implementation is used.');
+        }
+
+        this.update();
+
+        this.resize();
+        this.rotate();
+        this.translate();        
+
+        return this;
+    },
+
+    // Scale the whole `<g>` group. Note the difference between `scale()` and `resize()` here.
+    // `resize()` doesn't scale the whole `<g>` group but rather adjusts the `box.sx`/`box.sy` only.
+    // `update()` is then responsible for scaling only those elements that have the `follow-scale`
+    // attribute set to `true`. This is desirable in elements that have e.g. a `<text>` subelement
+    // that is not supposed to be scaled together with a surrounding `<rect>` element that IS supposed
+    // be be scaled.
+    scale: function(sx, sy) {
+
+        // TODO: take into account the origin coordinates `ox` and `oy`.
+        V(this.el).scale(sx, sy);
+    },
+
+    resize: function() {
+
+        var size = this.model.get('size') || { width: 1, height: 1 };
+        var angle = this.model.get('angle') || 0;
+        
+        var scalable = V(this.$('.scalable')[0]);
+        if (!scalable) {
+            // If there is no scalable elements, than there is nothing to resize.
+            return;
+        }
+        var scalableBbox = scalable.bbox(true);
+        
+        scalable.attr('transform', 'scale(' + (size.width / scalableBbox.width) + ',' + (size.height / scalableBbox.height) + ')');
+
+        // Now the interesting part. The goal is to be able to store the object geometry via just `x`, `y`, `angle`, `width` and `height`
+        // Order of transformations is significant but we want to reconstruct the object always in the order:
+        // resize(), rotate(), translate() no matter of how the object was transformed. For that to work,
+        // we must adjust the `x` and `y` coordinates of the object whenever we resize it (because the origin of the
+        // rotation changes). The new `x` and `y` coordinates are computed by canceling the previous rotation
+        // around the center of the resized object (which is a different origin then the origin of the previous rotation)
+        // and getting the top-left corner of the resulting object. Then we clean up the rotation back to what it originally was.
+        
+        // Cancel the rotation but now around a different origin, which is the center of the scaled object.
+        var rotatable = V(this.$('.rotatable')[0]);
+        var rotation = rotatable && rotatable.attr('transform');
+        if (rotation && rotation !== 'null') {
+
+            rotatable.attr('transform', rotation + ' rotate(' + (-angle) + ',' + (size.width/2) + ',' + (size.height/2) + ')');
+            var rotatableBbox = scalable.bbox(false, this.paper.viewport);
+            
+            // Store new x, y and perform rotate() again against the new rotation origin.
+            this.model.set('position', { x: rotatableBbox.x, y: rotatableBbox.y });
+            this.rotate();
+        }
+
+        // Update must always be called on non-rotated element. Otherwise, relative positioning
+        // would work with wrong (rotated) bounding boxes.
+        this.update();
+    },
+
+    translate: function(model, changes, opt) {
+
+        var position = this.model.get('position') || { x: 0, y: 0 };
+
+        V(this.el).attr('transform', 'translate(' + position.x + ',' + position.y + ')');
+    },
+
+    rotate: function() {
+
+        var rotatable = V(this.$('.rotatable')[0]);
+        if (!rotatable) {
+            // If there is no rotatable elements, then there is nothing to rotate.
+            return;
+        }
+        
+        var angle = this.model.get('angle') || 0;
+        var size = this.model.get('size') || { width: 1, height: 1 };
+
+        var ox = size.width/2;
+        var oy = size.height/2;
+        
+
+        rotatable.attr('transform', 'rotate(' + angle + ',' + ox + ',' + oy + ')');
+    },
+
+    // Interaction. The controller part.
+    // ---------------------------------
+
+    
+    pointerdown: function(evt, x, y) {
+
+        if ( // target is a valid magnet start linking
+            evt.target.getAttribute('magnet') &&
+            this.paper.options.validateMagnet.call(this.paper, this, evt.target)
+        ) {
+                this.model.trigger('batch:start');
+
+                var link = this.paper.getDefaultLink(this, evt.target);
+                link.set({
+                    source: {
+                        id: this.model.id,
+                        selector: this.getSelector(evt.target),
+                        port: $(evt.target).attr('port')
+                    },
+                    target: { x: x, y: y }
+                });
+
+                this.paper.model.addCell(link);
+
+	        this._linkView = this.paper.findViewByModel(link);
+                this._linkView.startArrowheadMove('target');
+
+        } else {
+
+            this._dx = x;
+            this._dy = y;
+
+            joint.dia.CellView.prototype.pointerdown.apply(this, arguments);
+        }
+    },
+
+    pointermove: function(evt, x, y) {
+
+        if (this._linkView) {
+
+            // let the linkview deal with this event
+            this._linkView.pointermove(evt, x, y);
+
+        } else {
+
+	    var grid = this.paper.options.gridSize;
+
+            if (this.options.interactive !== false) {
+
+	        var position = this.model.get('position');
+
+	        // Make sure the new element's position always snaps to the current grid after
+	        // translate as the previous one could be calculated with a different grid size.
+	        this.model.translate(
+		    g.snapToGrid(position.x, grid) - position.x + g.snapToGrid(x - this._dx, grid),
+		    g.snapToGrid(position.y, grid) - position.y + g.snapToGrid(y - this._dy, grid)
+	        );
+            }
+
+            this._dx = g.snapToGrid(x, grid);
+            this._dy = g.snapToGrid(y, grid);
+
+            joint.dia.CellView.prototype.pointermove.apply(this, arguments);
+        }
+    },
+
+    pointerup: function(evt, x, y) {
+
+        if (this._linkView) {
+
+            // let the linkview deal with this event
+            this._linkView.pointerup(evt, x, y);
+
+            delete this._linkView;
+
+            this.model.trigger('batch:stop');
+
+        } else {
+
+            joint.dia.CellView.prototype.pointerup.apply(this, arguments);
+        }
+    }
+
+});
+
+if (typeof exports === 'object') {
+
+    module.exports.Element = joint.dia.Element;
+    module.exports.ElementView = joint.dia.ElementView;
+}
+
+//      JointJS diagramming library.
+//      (c) 2011-2013 client IO
+
+
+if (typeof exports === 'object') {
+
+    var joint = {
+        dia: {
+            Cell: require('./joint.dia.cell').Cell,
+            CellView: require('./joint.dia.cell').CellView
+        }
+    };
+    var Backbone = require('backbone');
+    var _ = require('lodash');
+    var g = require('./geometry').g;
+}
+
+
+
+// joint.dia.Link base model.
+// --------------------------
+joint.dia.Link = joint.dia.Cell.extend({
+
+    // The default markup for links.
+    markup: [
+        '<path class="connection" stroke="black"/>',
+        '<path class="marker-source" fill="black" stroke="black" />',
+        '<path class="marker-target" fill="black" stroke="black" />',
+        '<path class="connection-wrap"/>',
+        '<g class="labels"/>',
+        '<g class="marker-vertices"/>',
+        '<g class="marker-arrowheads"/>',
+        '<g class="link-tools"/>'
+    ].join(''),
+
+    labelMarkup: [
+        '<g class="label">',
+        '<rect />',
+        '<text />',
+        '</g>'
+    ].join(''),
+
+    toolMarkup: [
+        '<g class="link-tool">',
+        '<g class="tool-remove" event="remove">',
+        '<circle r="11" />',
+        '<path transform="scale(.8) translate(-16, -16)" d="M24.778,21.419 19.276,15.917 24.777,10.415 21.949,7.585 16.447,13.087 10.945,7.585 8.117,10.415 13.618,15.917 8.116,21.419 10.946,24.248 16.447,18.746 21.948,24.248z"/>',
+        '<title>Remove link.</title>',
+        '</g>',
+        '<g class="tool-options" event="link:options">',
+        '<circle r="11" transform="translate(25)"/>',
+        '<path fill="white" transform="scale(.55) translate(29, -16)" d="M31.229,17.736c0.064-0.571,0.104-1.148,0.104-1.736s-0.04-1.166-0.104-1.737l-4.377-1.557c-0.218-0.716-0.504-1.401-0.851-2.05l1.993-4.192c-0.725-0.91-1.549-1.734-2.458-2.459l-4.193,1.994c-0.647-0.347-1.334-0.632-2.049-0.849l-1.558-4.378C17.165,0.708,16.588,0.667,16,0.667s-1.166,0.041-1.737,0.105L12.707,5.15c-0.716,0.217-1.401,0.502-2.05,0.849L6.464,4.005C5.554,4.73,4.73,5.554,4.005,6.464l1.994,4.192c-0.347,0.648-0.632,1.334-0.849,2.05l-4.378,1.557C0.708,14.834,0.667,15.412,0.667,16s0.041,1.165,0.105,1.736l4.378,1.558c0.217,0.715,0.502,1.401,0.849,2.049l-1.994,4.193c0.725,0.909,1.549,1.733,2.459,2.458l4.192-1.993c0.648,0.347,1.334,0.633,2.05,0.851l1.557,4.377c0.571,0.064,1.148,0.104,1.737,0.104c0.588,0,1.165-0.04,1.736-0.104l1.558-4.377c0.715-0.218,1.399-0.504,2.049-0.851l4.193,1.993c0.909-0.725,1.733-1.549,2.458-2.458l-1.993-4.193c0.347-0.647,0.633-1.334,0.851-2.049L31.229,17.736zM16,20.871c-2.69,0-4.872-2.182-4.872-4.871c0-2.69,2.182-4.872,4.872-4.872c2.689,0,4.871,2.182,4.871,4.872C20.871,18.689,18.689,20.871,16,20.871z"/>',
+        '<title>Link options.</title>',
+        '</g>',
+        '</g>'
+    ].join(''),
+
+    // The default markup for showing/removing vertices. These elements are the children of the .marker-vertices element (see `this.markup`).
+    // Only .marker-vertex and .marker-vertex-remove element have special meaning. The former is used for
+    // dragging vertices (changin their position). The latter is used for removing vertices.
+    vertexMarkup: [
+        '<g class="marker-vertex-group" transform="translate(<%= x %>, <%= y %>)">',
+        '<circle class="marker-vertex" idx="<%= idx %>" r="10" />',
+        '<path class="marker-vertex-remove-area" idx="<%= idx %>" d="M16,5.333c-7.732,0-14,4.701-14,10.5c0,1.982,0.741,3.833,2.016,5.414L2,25.667l5.613-1.441c2.339,1.317,5.237,2.107,8.387,2.107c7.732,0,14-4.701,14-10.5C30,10.034,23.732,5.333,16,5.333z" transform="translate(5, -33)"/>',
+        '<path class="marker-vertex-remove" idx="<%= idx %>" transform="scale(.8) translate(9.5, -37)" d="M24.778,21.419 19.276,15.917 24.777,10.415 21.949,7.585 16.447,13.087 10.945,7.585 8.117,10.415 13.618,15.917 8.116,21.419 10.946,24.248 16.447,18.746 21.948,24.248z">',
+        '<title>Remove vertex.</title>',
+        '</path>',
+        '</g>'
+    ].join(''),
+
+    arrowheadMarkup: [
+        '<g class="marker-arrowhead-group marker-arrowhead-group-<%= end %>">',
+        '<path class="marker-arrowhead" end="<%= end %>" d="M 26 0 L 0 13 L 26 26 z" />',
+        '</g>'
+    ].join(''),
+
+    defaults: {
+
+        type: 'link'
+    },
+
+    disconnect: function() {
+
+        return this.set({ source: g.point(0, 0), target: g.point(0, 0) });
+    },
+
+    // A convenient way to set labels. Currently set values will be mixined with `value` if used as a setter.
+    label: function(idx, value) {
+
+        idx = idx || 0;
+        
+        var labels = this.get('labels') || [];
+        
+        // Is it a getter?
+        if (arguments.length === 0 || arguments.length === 1) {
+            
+            return labels[idx];
+        }
+
+        var newValue = _.merge({}, labels[idx], value);
+
+        var newLabels = labels.slice();
+        newLabels[idx] = newValue;
+        
+        return this.set({ labels: newLabels });
+    }
+});
+
+
+// joint.dia.Link base view and controller.
+// ----------------------------------------
+
+joint.dia.LinkView = joint.dia.CellView.extend({
+
+    className: 'link',
+
+    options: {
+
+        shortLinkLength: 100
+    },
+    
+    initialize: function() {
+
+        joint.dia.CellView.prototype.initialize.apply(this, arguments);
+
+        // create methods in prototype, so they can be accessed from any instance and
+        // don't need to be create over and over
+        if (typeof this.constructor.prototype.watchSource !== 'function') {
+            this.constructor.prototype.watchSource = this._createWatcher('source');
+            this.constructor.prototype.watchTarget = this._createWatcher('target');
+        }
+
+        // `_.labelCache` is a mapping of indexes of labels in the `this.get('labels')` array to
+        // `<g class="label">` nodes wrapped by Vectorizer. This allows for quick access to the
+        // nodes in `updateLabelPosition()` in order to update the label positions.
+        this._labelCache = {};
+
+        // bind events
+        this.startListening();
+    },
+
+    startListening: function() {
+
+	this.listenTo(this.model, 'change:markup', this.render);
+	this.listenTo(this.model, 'change:smooth change:manhattan', this.update);
+        this.listenTo(this.model, 'change:toolMarkup', function() {
+            this.renderTools().updateToolsPosition();
+        });
+	this.listenTo(this.model, 'change:labels change:labelMarkup', function() {
+            this.renderLabels().updateLabelPositions();
+        });
+        this.listenTo(this.model, 'change:vertices change:vertexMarkup', function() {
+            this.renderVertexMarkers().update();
+        });
+	this.listenTo(this.model, 'change:source', function(cell, source) {
+            this.watchSource(cell, source).update();
+        });
+	this.listenTo(this.model, 'change:target', function(cell, target) {
+            this.watchTarget(cell, target).update();
+        });
+    },
+
+    // Rendering
+    //----------
+
+    render: function() {
+
+	this.$el.empty();
+
+        // A special markup can be given in the `properties.markup` property. This might be handy
+        // if e.g. arrowhead markers should be `<image>` elements or any other element than `<path>`s.
+        // `.connection`, `.connection-wrap`, `.marker-source` and `.marker-target` selectors
+        // of elements with special meaning though. Therefore, those classes should be preserved in any
+        // special markup passed in `properties.markup`.
+        var children = V(this.model.get('markup') || this.model.markup);
+
+        // custom markup may contain only one children
+        if (!_.isArray(children)) children = [children];
+
+        // Cache all children elements for quicker access.
+        this._V = {} // vectorized markup;
+        _.each(children, function(child) {
+            var c = child.attr('class');
+            c && (this._V[$.camelCase(c)] = child);
+        }, this);
+
+        // Only the connection path is mandatory
+        if (!this._V.connection) throw new Error('link: no connection path in the markup');
+
+        // partial rendering
+        this.renderTools();
+        this.renderVertexMarkers();
+        this.renderArrowheadMarkers();
+
+        V(this.el).append(children);
+
+        // rendering labels has to be run after the link is appended to DOM tree. (otherwise <Text> bbox
+        // returns zero values)
+        this.renderLabels();
+
+        // start watching the ends of the link for changes
+        this.watchSource(this.model, this.model.get('source'))
+            .watchTarget(this.model, this.model.get('target'))
+            .update();
+
+        return this;
+    },
+
+    renderLabels: function() {
+
+        if (!this._V.labels) return this;
+
+        this._labelCache = {};
+        var $labels = $(this._V.labels.node).empty();
+
+        var labels = this.model.get('labels') || [];
+        if (!labels.length) return this;
+        
+        var labelTemplate = _.template(this.model.get('labelMarkup') || this.model.labelMarkup);
+        // This is a prepared instance of a vectorized SVGDOM node for the label element resulting from
+        // compilation of the labelTemplate. The purpose is that all labels will just `clone()` this
+        // node to create a duplicate.
+        var labelNodeInstance = V(labelTemplate());
+
+        _.each(labels, function(label, idx) {
+
+            var labelNode = labelNodeInstance.clone().node;
+            // Cache label nodes so that the `updateLabels()` can just update the label node positions.
+            this._labelCache[idx] = V(labelNode);
+
+            var $text = $(labelNode).find('text');
+            var $rect = $(labelNode).find('rect');
+
+            // Text attributes with the default `text-anchor` set.
+            var textAttributes = _.extend({ 'text-anchor': 'middle' }, joint.util.getByPath(label, 'attrs/text', '/'));
+            
+            $text.attr(_.omit(textAttributes, 'text'));
+                
+            if (!_.isUndefined(textAttributes.text)) {
+
+                V($text[0]).text(textAttributes.text + '');
+            }
+
+            // Note that we first need to append the `<text>` element to the DOM in order to
+            // get its bounding box.
+            $labels.append(labelNode);
+
+            // `y-alignment` - center the text element around its y coordinate.
+            var textBbox = V($text[0]).bbox(true, $labels[0]);
+            V($text[0]).translate(0, -textBbox.height/2);
+
+            // Add default values.
+            var rectAttributes = _.extend({
+
+                fill: 'white',
+                rx: 3,
+                ry: 3
+                
+            }, joint.util.getByPath(label, 'attrs/rect', '/'));
+            
+            $rect.attr(_.extend(rectAttributes, {
+
+                x: textBbox.x,
+                y: textBbox.y - textBbox.height/2,  // Take into account the y-alignment translation.
+                width: textBbox.width,
+                height: textBbox.height
+            }));
+            
+        }, this);
+
+        return this;
+    },
+
+    renderTools: function() {
+
+        if (!this._V.linkTools) return this;
+
+        // Tools are a group of clickable elements that manipulate the whole link.
+        // A good example of this is the remove tool that removes the whole link.
+        // Tools appear after hovering the link close to the `source` element/point of the link
+        // but are offset a bit so that they don't cover the `marker-arrowhead`.
+
+        var $tools = $(this._V.linkTools.node).empty();
+        var toolTemplate = _.template(this.model.get('toolMarkup') || this.model.toolMarkup);
+        var tool = V(toolTemplate());
+
+        $tools.append(tool.node);
+
+        // Cache the tool node so that the `updateToolsPosition()` can update the tool position quickly.
+        this._toolCache = tool;
+
+        return this;
+    },
+
+    renderVertexMarkers: function() {
+
+        if (!this._V.markerVertices) return this;
+
+        var $markerVertices = $(this._V.markerVertices.node).empty();
+
+        // A special markup can be given in the `properties.vertexMarkup` property. This might be handy
+        // if default styling (elements) are not desired. This makes it possible to use any
+        // SVG elements for .marker-vertex and .marker-vertex-remove tools.
+        var markupTemplate = _.template(this.model.get('vertexMarkup') || this.model.vertexMarkup);
+        
+        _.each(this.model.get('vertices'), function(vertex, idx) {
+
+            $markerVertices.append(V(markupTemplate(_.extend({ idx: idx }, vertex))).node);
+        });
+        
+        return this;
+    },
+
+    renderArrowheadMarkers: function() {
+
+        // Custom markups might not have arrowhead markers. Therefore, jump of this function immediately if that's the case.
+        if (!this._V.markerArrowheads) return this;
+
+        var $markerArrowheads = $(this._V.markerArrowheads.node);
+
+        $markerArrowheads.empty();
+
+        // A special markup can be given in the `properties.vertexMarkup` property. This might be handy
+        // if default styling (elements) are not desired. This makes it possible to use any
+        // SVG elements for .marker-vertex and .marker-vertex-remove tools.
+        var markupTemplate = _.template(this.model.get('arrowheadMarkup') || this.model.arrowheadMarkup);
+
+        this._sourceArrowhead = V(markupTemplate({ end: 'source' }));
+        this._targetArrowhead = V(markupTemplate({ end: 'target' }));
+
+        $markerArrowheads.append(this._sourceArrowhead.node, this._targetArrowhead.node);
+
+        return this;
+    },
+
+    // Updating
+    //---------
+
+    // Default is to process the `attrs` object and set attributes on subelements based on the selectors.
+    update: function() {
+
+        // Update attributes.
+        _.each(this.model.get('attrs'), function(attrs, selector) {
+            
+            // If the `filter` attribute is an object, it is in the special JointJS filter format and so
+            // it becomes a special attribute and is treated separately.
+            if (_.isObject(attrs.filter)) {
+                
+                this.findBySelector(selector).attr(_.omit(attrs, 'filter'));
+                this.applyFilter(selector, attrs.filter);
+                
+            } else {
+                
+                this.findBySelector(selector).attr(attrs);
+            }
+        }, this);
+
+        var vertices = this.model.get('vertices');
+
+        if (this.model.get('manhattan')) {
+            // If manhattan routing is enabled, find new vertices so that the link is orthogonally routed.
+            vertices = this.findManhattanRoute(vertices);
+        }
+
+        this._firstVertex = _.first(vertices);
+        this._sourcePoint = this.getConnectionPoint(
+            'source',
+            this.model.get('source'),
+            this._firstVertex || this.model.get('target')).round();
+
+        this._lastVertex = _.last(vertices);
+        this._targetPoint = this.getConnectionPoint(
+            'target',
+            this.model.get('target'),
+            this._lastVertex || this._sourcePoint
+        );
+
+        // Make the markers "point" to their sticky points being auto-oriented towards
+        // `targetPosition`/`sourcePosition`. And do so only if there is a markup for them.
+        if (this._V.markerSource) {
+            this._V.markerSource.translateAndAutoOrient(
+                this._sourcePoint,
+                this._firstVertex || this._targetPoint,
+                this.paper.viewport
+            );
+        }
+
+        if (this._V.markerTarget) {
+            this._V.markerTarget.translateAndAutoOrient(
+                this._targetPoint,
+                this._lastVertex || this._sourcePoint,
+                this.paper.viewport
+            );
+        }
+
+        var pathData = this.getPathData(vertices);
+        // The markup needs to contain a `.connection`
+        this._V.connection.attr('d', pathData);
+        this._V.connectionWrap && this._V.connectionWrap.attr('d', pathData);
+
+        //partials updates
+        this.updateLabelPositions();
+        this.updateToolsPosition();
+        this.updateArrowheadMarkers();
+
+        return this;
+    },
+
+    updateLabelPositions: function() {
+
+        if (!this._V.labels) return this;
+
+        // This method assumes all the label nodes are stored in the `this._labelCache` hash table
+        // by their indexes in the `this.get('labels')` array. This is done in the `renderLabels()` method.
+
+        var labels = this.model.get('labels') || [];
+        if (!labels.length) return this;
+
+        var connectionElement = this._V.connection.node;
+        var connectionLength = connectionElement.getTotalLength();
+
+        _.each(labels, function(label, idx) {
+
+            var position = label.position;
+            position = (position > connectionLength) ? connectionLength : position; // sanity check
+            position = (position < 0) ? connectionLength + position : position;
+            position = position > 1 ? position : connectionLength * position;
+
+            var labelCoordinates = connectionElement.getPointAtLength(position);
+
+            this._labelCache[idx].attr('transform', 'translate(' + labelCoordinates.x + ', ' + labelCoordinates.y + ')');
+
+        }, this);
+
+        return this;
+    },
+
+
+    updateToolsPosition: function() {
+
+        if (!this._V.linkTools) return this;
+
+        // Move the tools a bit to the target position but don't cover the `sourceArrowhead` marker.
+        // Note that the offset is hardcoded here. The offset should be always
+        // more than the `this.$('.marker-arrowhead[end="source"]')[0].bbox().width` but looking
+        // this up all the time would be slow.
+
+        var scale = '';
+        var offset = 40;
+
+        // If the link is too short, make the tools half the size and the offset twice as low.
+        if (this.getConnectionLength() < this.options.shortLinkLength) {
+            scale = 'scale(.5)';
+            offset /= 2;
+        }
+
+        var toolPosition = this.getPointAtLength(offset);
+        
+        this._toolCache.attr('transform', 'translate(' + toolPosition.x + ', ' + toolPosition.y + ') ' + scale);
+
+        return this;
+    },
+
+
+    updateArrowheadMarkers: function() {
+
+        if (!this._V.markerArrowheads) return this;
+
+        // getting bbox of an element with `display="none"` in IE9 ends up with access violation
+        if ($.css(this._V.markerArrowheads.node, 'display') === 'none') return this;
+
+        var sx = this.getConnectionLength() < this.options.shortLinkLength ? .5 : 1
+        this._sourceArrowhead.scale(sx);
+        this._targetArrowhead.scale(sx);
+
+        // Make the markers "point" to their sticky points being auto-oriented towards `targetPosition`/`sourcePosition`.
+        this._sourceArrowhead.translateAndAutoOrient(
+            this._sourcePoint,
+            this._firstVertex || this._targetPoint,
+            this.paper.viewport
+        );
+
+        this._targetArrowhead.translateAndAutoOrient(
+            this._targetPoint,
+            this._lastVertex || this._sourcePoint,
+            this.paper.viewport
+        );
+
+        return this;
+    },
+
+    // Returns a function observing changes on an end of the link. If a change happens and new end is a new model,
+    // it stops listening on the previous one and starts listening to the new one.
+    _createWatcher: function(endType) {
+
+        function watchEnd(link, end) {
+
+            end = end || {};
+
+            var previousEnd = link.previous(endType) || {};
+
+            // Pick updateMethod this._sourceBboxUpdate or this._targetBboxUpdate.
+            var updateEndFunction = this['_' + endType + 'BBoxUpdate'];
+
+            if (this._isModel(previousEnd)) {
+                this.stopListening(this.paper.getModelById(previousEnd.id), 'change', updateEndFunction);
+            }
+
+            if (this._isModel(end)) {
+                // If the observed model changes, it caches a new bbox and do the link update.
+                this.listenTo(this.paper.getModelById(end.id), 'change', updateEndFunction);
+            }
+
+            _.bind(updateEndFunction, this)({ cacheOnly: true });
+
+            return this;
+        }
+
+        return watchEnd;
+    },
+
+    // It's important to keep both methods (sourceBboxUpdate and targetBboxUpdate) as unique methods
+    // because of loop links. We have to be able to determine, which method we want to stop listen to.
+    // ListenTo(model, event, handler) as model and event will be identical.
+    _sourceBBoxUpdate: function(update) {
+
+        update = update || {};
+        var end = this.model.get('source');
+
+        if (this._isModel(end)) {
+
+            var selector = this._makeSelector(end);
+            var view = this.paper.findViewByModel(end.id);
+            var magnetElement = this.paper.viewport.querySelector(selector);
+
+            this._sourceBbox = view.getStrokeBBox(magnetElement);
+
+        } else {
+            // the link end is a point ~ rect 1x1
+            this._sourceBbox = {
+                width: 1, height: 1,
+                x: end.x, y: end.y
+            };
+        }
+
+        if (!update.cacheOnly) this.update();
+    },
+
+    _targetBBoxUpdate: function(update) {
+
+        update = update || {};
+        var end = this.model.get('target');
+
+        if (this._isModel(end)) {
+
+            var selector = this._makeSelector(end);
+            var view = this.paper.findViewByModel(end.id);
+            var magnetElement = this.paper.viewport.querySelector(selector);
+
+            this._targetBbox = view.getStrokeBBox(magnetElement);
+
+        } else {
+            // the link end is a point ~ rect 1x1
+            this._targetBbox = {
+                width: 1, height: 1,
+                x: end.x, y: end.y
+            };
+        }
+
+        if (!update.cacheOnly) this.update();
+    },
+
+
+    removeVertex: function(idx) {
+
+        var vertices = _.clone(this.model.get('vertices'));
+        
+        if (vertices && vertices.length) {
+
+            vertices.splice(idx, 1);
+            this.model.set('vertices', vertices);
+        }
+
+        return this;
+    },
+
+    // This method ads a new vertex to the `vertices` array of `.connection`. This method
+    // uses a heuristic to find the index at which the new `vertex` should be placed at assuming
+    // the new vertex is somewhere on the path.
+    addVertex: function(vertex) {
+
+        this.model.set('attrs', this.model.get('attrs') || {});
+        var attrs = this.model.get('attrs');
+        
+        // As it is very hard to find a correct index of the newly created vertex,
+        // a little heuristics is taking place here.
+        // The heuristics checks if length of the newly created
+        // path is lot more than length of the old path. If this is the case,
+        // new vertex was probably put into a wrong index.
+        // Try to put it into another index and repeat the heuristics again.
+
+        var vertices = (this.model.get('vertices') || []).slice();
+        // Store the original vertices for a later revert if needed.
+        var originalVertices = vertices.slice();
+
+        // A `<path>` element used to compute the length of the path during heuristics.
+        var path = this._V.connection.node.cloneNode(false);
+        
+        // Length of the original path.        
+        var originalPathLength = path.getTotalLength();
+        // Current path length.
+        var pathLength;
+        // Tolerance determines the highest possible difference between the length
+        // of the old and new path. The number has been chosen heuristically.
+        var pathLengthTolerance = 20;
+        // Total number of vertices including source and target points.
+        var idx = vertices.length + 1;
+
+        // Loop through all possible indexes and check if the difference between
+        // path lengths changes significantly. If not, the found index is
+        // most probably the right one.
+        while (idx--) {
+
+            vertices.splice(idx, 0, vertex);
+            V(path).attr('d', this.getPathData(vertices));
+
+            pathLength = path.getTotalLength();
+
+            // Check if the path lengths changed significantly.
+            if (pathLength - originalPathLength > pathLengthTolerance) {
+
+                // Revert vertices to the original array. The path length has changed too much
+                // so that the index was not found yet.
+                vertices = originalVertices.slice();
+                
+            } else {
+
+                break;
+            }
+        }
+
+        this.model.set('vertices', vertices);
+
+        // In manhattan routing, if there are no vertices, the path length changes significantly
+        // with the first vertex added. Shall we check vertices.length === 0? at beginning of addVertex()
+        // in order to avoid the temporary path construction and other operations?
+        return Math.max(idx, 0);
+    },
+
+    // Return the `d` attribute value of the `<path>` element representing the link between `source` and `target`.
+    getPathData: function(vertices) {
+
+        var sourcePoint = g.point(this._sourcePoint);
+        var targetPoint = g.point(this._targetPoint);
+
+        // Move the source point by the width of the marker taking into account its scale around x-axis.
+        // Note that scale is the only transform that makes sense to be set in `.marker-source` attributes object
+        // as all other transforms (translate/rotate) will be replaced by the `translateAndAutoOrient()` function.
+
+        if (this._V.markerSource) {
+            this._markerSourceBbox = this._markerSourceBbox || this._V.markerSource.bbox(true);
+            sourcePoint.move(
+                this._firstVertex || targetPoint,
+                this._markerSourceBbox.width * -this._V.markerSource.scale().sx
+            );
+        }
+
+        if (this._V.markerTarget) {
+            this._markerTargetBbox = this._markerTargetBbox || this._V.markerTarget.bbox(true);
+            targetPoint.move(
+                this._lastVertex || sourcePoint,
+                this._markerTargetBbox.width * -this._V.markerTarget.scale().sx
+            );
+        }
+
+        var d;
+        if (this.model.get('smooth')) {
+
+            if (vertices && vertices.length) {
+                d = g.bezier.curveThroughPoints([sourcePoint].concat(vertices || []).concat([targetPoint]));
+            } else {
+                // if we have no vertices use a default cubic bezier curve, cubic bezier requires two control points.
+                // the two control points are both defined with X as mid way between the source and target points.
+                // sourceControlPoint Y is equal to sourcePoint Y and targetControlPointY being equal to targetPointY.
+                // handle situation were sourcePointX is greater or less then targetPointX.
+                var controlPointX = (sourcePoint.x < targetPoint.x) 
+                    ? targetPoint.x - ((targetPoint.x - sourcePoint.x) / 2)
+                    : sourcePoint.x - ((sourcePoint.x - targetPoint.x) / 2);
+                    d = ['M', sourcePoint.x, sourcePoint.y, 'C', controlPointX, sourcePoint.y, controlPointX, targetPoint.y, targetPoint.x, targetPoint.y];
+            }
+            
+        } else {
+            
+            // Construct the `d` attribute of the `<path>` element.
+            d = ['M', sourcePoint.x, sourcePoint.y];
+            _.each(vertices, function(vertex) {
+
+                d.push(vertex.x, vertex.y);
+            });
+            d.push(targetPoint.x, targetPoint.y);
+        }
+
+        return d.join(' ');
+    },
+
+    // Find a point that is the start of the connection.
+    // If `selectorOrPoint` is a point, then we're done and that point is the start of the connection.
+    // If the `selectorOrPoint` is an element however, we need to know a reference point (or element)
+    // that the link leads to in order to determine the start of the connection on the original element.
+    getConnectionPoint: function(end, selectorOrPoint, referenceSelectorOrPoint) {
+
+        var spot;
+
+        if (this._isPoint(selectorOrPoint)) {
+
+            // If the source is a point, we don't need a reference point to find the sticky point of connection.
+            spot = g.point(selectorOrPoint);
+
+        } else {
+
+            // If the source is an element, we need to find a point on the element boundary that is closest
+            // to the reference point (or reference element).
+            // Get the bounding box of the spot relative to the paper viewport. This is necessary
+            // in order to follow paper viewport transformations (scale/rotate).
+            // `_sourceBbox` (`_targetBbox`) comes from `_sourceBboxUpdate` (`_sourceBboxUpdate`)
+            // method, it exists since first render and are automatically updated
+            var spotBbox = end === 'source' ? this._sourceBbox : this._targetBbox;
+            
+            var reference;
+            
+            if (this._isPoint(referenceSelectorOrPoint)) {
+
+                // Reference was passed as a point, therefore, we're ready to find the sticky point of connection on the source element.
+                reference = g.point(referenceSelectorOrPoint);
+
+            } else {
+
+                // Reference was passed as an element, therefore we need to find a point on the reference
+                // element boundary closest to the source element.
+                // Get the bounding box of the spot relative to the paper viewport. This is necessary
+                // in order to follow paper viewport transformations (scale/rotate).
+                var referenceBbox = end === 'source' ? this._targetBbox : this._sourceBbox;
+
+                reference = g.rect(referenceBbox).intersectionWithLineFromCenterToPoint(g.rect(spotBbox).center());
+                reference = reference || g.rect(referenceBbox).center();
+            }
+
+            // If `perpendicularLinks` flag is set on the paper and there are vertices
+            // on the link, then try to find a connection point that makes the link perpendicular
+            // even though the link won't point to the center of the targeted object.
+            if (this.paper.options.perpendicularLinks) {
+
+                var horizontalLineRect = g.rect(0, reference.y, this.paper.options.width, 1);
+                var verticalLineRect = g.rect(reference.x, 0, 1, this.paper.options.height);
+                var nearestSide;
+
+                if (horizontalLineRect.intersect(g.rect(spotBbox))) {
+
+                    nearestSide = g.rect(spotBbox).sideNearestToPoint(reference);
+                    switch (nearestSide) {
+                      case 'left':
+                        spot = g.point(spotBbox.x, reference.y);
+                        break;
+                      case 'right':
+                        spot = g.point(spotBbox.x + spotBbox.width, reference.y);
+                        break;
+                    default:
+                        spot = g.rect(spotBbox).center();
+                        break;
+                    }
+                    
+                } else if (verticalLineRect.intersect(g.rect(spotBbox))) {
+
+                    nearestSide = g.rect(spotBbox).sideNearestToPoint(reference);
+                    switch (nearestSide) {
+                      case 'top':
+                        spot = g.point(reference.x, spotBbox.y);
+                        break;
+                      case 'bottom':
+                        spot = g.point(reference.x, spotBbox.y + spotBbox.height);
+                        break;
+                    default:
+                        spot = g.rect(spotBbox).center();
+                        break;
+                    }
+                    
+                } else {
+
+                    // If there is no intersection horizontally or vertically with the object bounding box,
+                    // then we fall back to the regular situation finding straight line (not perpendicular)
+                    // between the object and the reference point.
+
+                    spot = g.rect(spotBbox).intersectionWithLineFromCenterToPoint(reference);
+                    spot = spot || g.rect(spotBbox).center();
+                }
+                
+            } else {
+            
+                spot = g.rect(spotBbox).intersectionWithLineFromCenterToPoint(reference);
+                spot = spot || g.rect(spotBbox).center();
+            }
+        }
+
+        return spot;
+    },
+
+    _isModel: function(end) {
+
+        return end && end.id;
+    },
+
+    _isPoint: function(end) {
+
+        return !this._isModel(end);
+    },
+
+    _makeSelector: function(end) {
+
+        var selector = '[model-id="' + end.id + '"]';
+        // `port` has a higher precendence over `selector`. This is because the selector to the magnet
+        // might change while the name of the port can stay the same.
+        if (end.port) {
+            selector += ' [port="' + end.port + '"]';
+        } else if (end.selector) {
+            selector += ' ' + end.selector;
+        }
+
+        return selector;
+    },
+
+    // Return points that one needs to draw a connection through in order to have a manhattan link routing from
+    // source to target going through `vertices`.
+    findManhattanRoute: function(vertices) {
+
+        vertices = (vertices || []).slice();
+        var manhattanVertices = [];
+
+        // Return the direction that one would have to take traveling from `p1` to `p2`.
+        // This function assumes the line between `p1` and `p2` is orthogonal.
+        function direction(p1, p2) {
+            
+            if (p1.y < p2.y && p1.x === p2.x) {
+                return 'down';
+            } else if (p1.y > p2.y && p1.x === p2.x) {
+                return 'up';
+            } else if (p1.x < p2.x && p1.y === p2.y) {
+                return 'right';
+            }
+            return 'left';
+        }
+        
+        function bestDirection(p1, p2, preferredDirection) {
+
+            var directions;
+
+            // This branching determines possible directions that one can take to travel
+            // from `p1` to `p2`.
+            if (p1.x < p2.x) {
+                
+                if (p1.y > p2.y) { directions = ['up', 'right']; }
+                else if (p1.y < p2.y) { directions = ['down', 'right']; }
+                else { directions = ['right']; }
+                
+            } else if (p1.x > p2.x) {
+                
+                if (p1.y > p2.y) { directions = ['up', 'left']; }
+                else if (p1.y < p2.y) { directions = ['down', 'left']; }
+                else { directions = ['left']; }
+                
+            } else {
+                
+                if (p1.y > p2.y) { directions = ['up']; }
+                else { directions = ['down']; }
+            }
+            
+            if (_.contains(directions, preferredDirection)) {
+                return preferredDirection;
+            }
+            
+            var direction = _.first(directions);
+
+            // Should the direction be the exact opposite of the preferred direction,
+            // try another one if such direction exists.
+            switch (preferredDirection) {
+              case 'down': if (direction === 'up') return _.last(directions); break;
+              case 'up': if (direction === 'down') return _.last(directions); break;
+              case 'left': if (direction === 'right') return _.last(directions); break;
+              case 'right': if (direction === 'left') return _.last(directions); break;
+            }
+            return direction;
+        }
+        
+        // Find a vertex in between the vertices `p1` and `p2` so that the route between those vertices
+        // is orthogonal. Prefer going the direction determined by `preferredDirection`.
+        function findMiddleVertex(p1, p2, preferredDirection) {
+            
+            var direction = bestDirection(p1, p2, preferredDirection);
+            if (direction === 'down' || direction === 'up') {
+                return { x: p1.x, y: p2.y, d: direction };
+            }
+            return { x: p2.x, y: p1.y, d: direction };
+        }
+
+        var sourceCenter = g.rect(this._sourceBbox).center();
+        var targetCenter = g.rect(this._targetBbox).center();
+
+        vertices.unshift(sourceCenter);
+        vertices.push(targetCenter);
+
+        var manhattanVertex;
+        var lastManhattanVertex;
+        var vertex;
+        var nextVertex;
+
+        // For all the pairs of link model vertices...
+        for (var i = 0; i < vertices.length - 1; i++) {
+
+            vertex = vertices[i];
+            nextVertex = vertices[i + 1];
+            lastManhattanVertex = _.last(manhattanVertices);
+            
+            if (i > 0) {
+                // Push all the link vertices to the manhattan route.
+                manhattanVertex = vertex;
+                // Determine a direction between the last vertex and the new one.
+                // Therefore, each vertex contains the `d` property describing the direction that one
+                // would have to take to travel to that vertex.
+                manhattanVertex.d = lastManhattanVertex ? direction(lastManhattanVertex, vertex) : 'top';
+                manhattanVertices.push(manhattanVertex);
+                lastManhattanVertex = manhattanVertex;
+            }
+
+            // Make sure that we don't create a vertex that would go the opposite direction then that of the
+            // previous one. Othwerwise, a 'spike' segment would be created which is not desirable.
+            // Find a dummy vertex to keep the link orthogonal. Preferably, take the same direction
+            // as the previous one.
+            var d = lastManhattanVertex && lastManhattanVertex.d;
+            manhattanVertex = findMiddleVertex(vertex, nextVertex, d);
+
+            // Do not add a new vertex that is the same as one of the vertices already added.
+            if (!g.point(manhattanVertex).equals(g.point(vertex)) && !g.point(manhattanVertex).equals(g.point(nextVertex))) {
+
+                manhattanVertices.push(manhattanVertex);
+            }
+        }
+        return manhattanVertices;
+    },
+
+    // Public API
+    // ----------
+
+    getConnectionLength: function() {
+
+        return this._V.connection.node.getTotalLength();
+    },
+
+    getPointAtLength: function(length) {
+
+        return this._V.connection.node.getPointAtLength(length);
+    },
+
+    // Interaction. The controller part.
+    // ---------------------------------
+
+    _beforeArrowheadMove: function() {
+
+        this.model.trigger('batch:start');
+
+        this._z = this.model.get('z');
+        this.model.set('z', Number.MAX_VALUE);
+
+        // Let the pointer propagate throught the link view elements so that
+        // the `evt.target` is another element under the pointer, not the link itself.
+        this.el.style.pointerEvents = 'none';
+    },
+
+    _afterArrowheadMove: function() {
+
+        if (this._z) {
+            this.model.set('z', this._z);
+            delete this._z;
+        }
+
+        // Put `pointer-events` back to its original value. See `startArrowheadMove()` for explanation.
+	// Value `auto` doesn't work in IE9. We force to use `visiblePainted` instead.
+	// See `https://developer.mozilla.org/en-US/docs/Web/CSS/pointer-events`.
+        this.el.style.pointerEvents = 'visiblePainted';
+
+        this.model.trigger('batch:stop');
+    },
+
+    _createValidateConnectionArgs: function(arrowhead) {
+        // It makes sure the arguments for validateConnection have the following form:
+        // (source view, source magnet, target view, target magnet and link view)
+        var args = [];
+
+        args[4] = arrowhead;
+        args[5] = this;
+
+        var oppositeArrowhead, i = 0, j = 0;
+
+        if (arrowhead === 'source') {
+            i = 2;
+            oppositeArrowhead = 'target';
+        } else {
+            j = 2;
+            oppositeArrowhead = 'source';
+        }
+
+        var end = this.model.get(oppositeArrowhead);
+
+        if (end.id) {
+            args[i] = this.paper.findViewByModel(end.id)
+            args[i+1] = end.selector && args[i].el.querySelector(end.selector);
+        }
+
+        function validateConnectionArgs(cellView, magnet) {
+            args[j] = cellView;
+            args[j+1] = cellView.el === magnet ? undefined : magnet;
+            return args;
+        }
+
+        return validateConnectionArgs;
+    },
+
+    startArrowheadMove: function(end) {
+        // Allow to delegate events from an another view to this linkView in order to trigger arrowhead
+        // move without need to click on the actual arrowhead dom element.
+        this._action = 'arrowhead-move';
+        this._arrowhead = end;
+        this._beforeArrowheadMove();
+        this._validateConnectionArgs = this._createValidateConnectionArgs(this._arrowhead);
+    },
+
+    pointerdown: function(evt, x, y) {
+
+        joint.dia.CellView.prototype.pointerdown.apply(this, arguments);
+
+	this._dx = x;
+        this._dy = y;
+
+        if (this.options.interactive === false) return;
+
+        var className = evt.target.getAttribute('class');
+
+        switch (className) {
+
+        case 'marker-vertex':
+            this._action = 'vertex-move';
+            this._vertexIdx = evt.target.getAttribute('idx');
+            break;
+
+        case 'marker-vertex-remove':
+        case 'marker-vertex-remove-area':
+            this.removeVertex(evt.target.getAttribute('idx'));
+            break;
+
+        case 'marker-arrowhead':
+            this.startArrowheadMove(evt.target.getAttribute('end'));
+            break;
+
+        default:
+
+            var targetParentEvent = evt.target.parentNode.getAttribute('event');
+
+            if (targetParentEvent) {
+
+                // `remove` event is built-in. Other custom events are triggered on the paper.
+                if (targetParentEvent === 'remove') {
+                    this.model.remove();
+                } else {
+                    this.paper.trigger(targetParentEvent, evt, this, x, y);
+                }
+
+            } else {
+
+                // Store the index at which the new vertex has just been placed.
+                // We'll be update the very same vertex position in `pointermove()`.
+                this._vertexIdx = this.addVertex({ x: x, y: y });
+                this._action = 'vertex-move';
+            }
+        }
+    },
+
+    pointermove: function(evt, x, y) {
+
+        joint.dia.CellView.prototype.pointermove.apply(this, arguments);
+
+        switch (this._action) {
+
+          case 'vertex-move':
+
+            var vertices = _.clone(this.model.get('vertices'));
+            vertices[this._vertexIdx] = { x: x, y: y };
+            this.model.set('vertices', vertices);
+            break;
+
+          case 'arrowhead-move':
+
+            if (this.paper.options.snapLinks) {
+
+                // checking view in close area of the pointer
+
+                var r = this.paper.options.snapLinks.radius || 50;
+                var viewsInArea = this.paper.findViewsInArea({ x: x - r, y: y - r, width: 2 * r, height: 2 * r });
+
+                this._closestView && this._closestView.unhighlight(this._closestEnd.selector);
+                this._closestView = this._closestEnd = null;
+
+                var pointer = g.point(x,y);
+                var distance, minDistance = Number.MAX_VALUE;
+
+                _.each(viewsInArea, function(view) {
+
+                    // skip connecting to the element in case '.': { magnet: false } attribute present
+                    if (view.el.getAttribute('magnet') !== 'false') {
+
+                        // find distance from the center of the model to pointer coordinates
+                        distance = view.model.getBBox().center().distance(pointer);
+
+                        // the connection is looked up in a circle area by `distance < r`
+                        if (distance < r && distance < minDistance) {
+
+                            if (this.paper.options.validateConnection.apply(
+                                this.paper, this._validateConnectionArgs(view, null)
+                            )) {
+                                minDistance = distance;
+                                this._closestView = view;
+                                this._closestEnd = { id: view.model.id };
+                            }
+                        }
+                    }
+
+                    view.$('[magnet]').each(_.bind(function(index, magnet) {
+
+                        var bbox = V(magnet).bbox(false, this.paper.viewport);
+
+                        distance = pointer.distance({
+                            x: bbox.x + bbox.width / 2,
+                            y: bbox.y + bbox.height / 2
+                        });
+
+                        if (distance < r && distance < minDistance) {
+
+                            if (this.paper.options.validateConnection.apply(
+                                this.paper, this._validateConnectionArgs(view, magnet)
+                            )) {
+                                minDistance = distance;
+                                this._closestView = view;
+                                this._closestEnd = {
+                                    id: view.model.id,
+                                    selector: view.getSelector(magnet),
+                                    port: magnet.getAttribute('port')
+                                }
+                            }
+                        }
+
+                    }, this));
+
+                }, this);
+
+                this._closestView && this._closestView.highlight(this._closestEnd.selector);
+
+                this.model.set(this._arrowhead, this._closestEnd || { x: x, y: y });
+
+            } else {
+
+                // checking views right under the pointer
+
+                // Touchmove event's target is not reflecting the element under the coordinates as mousemove does.
+                // It holds the element when a touchstart triggered.
+                var target = (evt.type === 'mousemove')
+                    ? evt.target
+                    : document.elementFromPoint(evt.clientX, evt.clientY)
+
+                if (this._targetEvent !== target) {
+                    // Unhighlight the previous view under pointer if there was one.
+                    this._magnetUnderPointer && this._viewUnderPointer.unhighlight(this._magnetUnderPointer);
+                    this._viewUnderPointer = this.paper.findView(target);
+                    if (this._viewUnderPointer) {
+                        // If we found a view that is under the pointer, we need to find the closest
+                        // magnet based on the real target element of the event.
+                        this._magnetUnderPointer = this._viewUnderPointer.findMagnet(target);
+
+                        if (this._magnetUnderPointer && this.paper.options.validateConnection.apply(
+                            this.paper,
+                            this._validateConnectionArgs(this._viewUnderPointer, this._magnetUnderPointer)
+                        )) {
+                            // If there was no magnet found, do not highlight anything and assume there
+                            // is no view under pointer we're interested in reconnecting to.
+                            // This can only happen if the overall element has the attribute `'.': { magnet: false }`.
+                            this._magnetUnderPointer && this._viewUnderPointer.highlight(this._magnetUnderPointer);
+                        } else {
+                            // This type of connection is not valid. Disregard this magnet.
+                            this._magnetUnderPointer = null;
+                        }
+                    } else {
+                        // Make sure we'll delete previous magnet
+                        this._magnetUnderPointer = null;
+                    }
+                }
+
+	        this._targetEvent = target;
+
+                this.model.set(this._arrowhead, { x: x, y: y });
+            }
+
+            break;
+        }
+
+        this._dx = x;
+        this._dy = y;
+    },
+
+    pointerup: function(evt) {
+
+        joint.dia.CellView.prototype.pointerup.apply(this, arguments);
+
+        if (this._action === 'arrowhead-move') {
+
+            if (this.paper.options.snapLinks) {
+
+                this._closestView && this._closestView.unhighlight(this._closestEnd.selector);
+                this._closestView = this._closestEnd = null;
+
+            } else {
+
+                if (this._magnetUnderPointer) {
+                    this._viewUnderPointer.unhighlight(this._magnetUnderPointer);
+                    // Find a unique `selector` of the element under pointer that is a magnet. If the
+                    // `this._magnetUnderPointer` is the root element of the `this._viewUnderPointer` itself,
+                    // the returned `selector` will be `undefined`. That means we can directly pass it to the
+                    // `source`/`target` attribute of the link model below.
+		    this.model.set(this._arrowhead, {
+                        id: this._viewUnderPointer.model.id,
+                        selector: this._viewUnderPointer.getSelector(this._magnetUnderPointer),
+                        port: $(this._magnetUnderPointer).attr('port')
+                    });
+                }
+
+                delete this._viewUnderPointer;
+                delete this._magnetUnderPointer;
+                delete this._staticView;
+                delete this._staticMagnet;
+            }
+
+            this._afterArrowheadMove();
+        }
+
+        delete this._action;
+    }
+});
+
+
+if (typeof exports === 'object') {
+
+    module.exports.Link = joint.dia.Link;
+    module.exports.LinkView = joint.dia.LinkView;
+}
+//      JointJS library.
+//      (c) 2011-2013 client IO
+
+
+joint.dia.Paper = Backbone.View.extend({
+
+    options: {
+
+        width: 800,
+        height: 600,
+        gridSize: 50,
+        perpendicularLinks: false,
+        elementView: joint.dia.ElementView,
+        linkView: joint.dia.LinkView,
+        snapLinks: false, // false, true, { radius: value }
+
+        // Defines what link model is added to the graph after an user clicks on an active magnet.
+        // Value could be the Backbone.model or a function returning the Backbone.model
+        // defaultLink: function(elementView, magnet) { return condition ? new customLink1() : new customLink2() }
+        defaultLink: new joint.dia.Link,
+
+        // Check whether to add a new link to the graph when user clicks on an a magnet.
+        validateMagnet: function(cellView, magnet) {
+            return magnet.getAttribute('magnet') !== 'passive';
+        },
+
+        // Check whether to allow or disallow the link connection while an arrowhead end (source/target)
+        // being changed.
+        validateConnection: function(cellViewS, magnetS, cellViewT, magnetT, end, linkView) {
+            return (end === 'target' ? cellViewT : cellViewS) instanceof joint.dia.ElementView;
+        }
+    },
+
+    events: {
+
+        'mousedown': 'pointerdown',
+        'dblclick': 'mousedblclick',
+        'touchstart': 'pointerdown',
+        'mousemove': 'pointermove',
+        'touchmove': 'pointermove'
+    },
+
+    initialize: function() {
+
+        _.bindAll(this, 'addCell', 'sortCells', 'resetCells', 'pointerup');
+
+        this.svg = V('svg').node;
+        this.viewport = V('g').node;
+
+        // Append `<defs>` element to the SVG document. This is useful for filters and gradients.
+        V(this.svg).append(V('defs').node);
+
+        V(this.viewport).attr({ 'class': 'viewport' });
+        
+        V(this.svg).append(this.viewport);
+
+        this.$el.append(this.svg);
+
+        this.setDimensions();
+
+	this.listenTo(this.model, 'add', this.addCell);
+	this.listenTo(this.model, 'reset', this.resetCells);
+	this.listenTo(this.model, 'sort', this.sortCells);
+
+	$(document).on('mouseup touchend', this.pointerup);
+    },
+
+    remove: function() {
+
+	$(document).off('mouseup touchend', this.pointerup);
+
+	Backbone.View.prototype.remove.call(this);
+    },
+
+    setDimensions: function(width, height) {
+
+        if (width) this.options.width = width;
+        if (height) this.options.height = height;
+        
+        V(this.svg).attr('width', this.options.width);
+        V(this.svg).attr('height', this.options.height);
+
+	this.trigger('resize');
+    },
+
+    // Expand/shrink the paper to fit the content. Snap the width/height to the grid
+    // defined in `gridWidth`, `gridHeight`. `padding` adds to the resulting width/height of the paper.
+    fitToContent: function(gridWidth, gridHeight, padding) {
+
+	gridWidth = gridWidth || 1;
+	gridHeight = gridHeight || 1;
+        padding = padding || 0;
+
+	// Calculate the paper size to accomodate all the graph's elements.
+	var bbox = V(this.viewport).bbox(true, this.svg);
+
+	var calcWidth = Math.ceil((bbox.width + bbox.x) / gridWidth) * gridWidth;
+	var calcHeight = Math.ceil((bbox.height + bbox.y) / gridHeight) * gridHeight;
+
+        calcWidth += padding;
+        calcHeight += padding;
+        
+	// Change the dimensions only if there is a size discrepency
+	if (calcWidth != this.options.width || calcHeight != this.options.height) {
+	    this.setDimensions(calcWidth || this.options.width , calcHeight || this.options.height);
+	}
+    },
+
+    getContentBBox: function() {
+
+        var crect = this.viewport.getBoundingClientRect();
+
+        // Using Screen CTM was the only way to get the real viewport bounding box working in both
+        // Google Chrome and Firefox.
+        var ctm = this.viewport.getScreenCTM();
+
+        var bbox = g.rect(Math.abs(crect.left - ctm.e), Math.abs(crect.top - ctm.f), crect.width, crect.height);
+
+        return bbox;
+    },
+
+    createViewForModel: function(cell) {
+
+        var view;
+        
+        var type = cell.get('type');
+        var module = type.split('.')[0];
+        var entity = type.split('.')[1];
+
+        // If there is a special view defined for this model, use that one instead of the default `elementView`/`linkView`.
+        if (joint.shapes[module] && joint.shapes[module][entity + 'View']) {
+
+            view = new joint.shapes[module][entity + 'View']({ model: cell, interactive: this.options.interactive });
+            
+        } else if (cell instanceof joint.dia.Element) {
+                
+            view = new this.options.elementView({ model: cell, interactive: this.options.interactive });
+
+        } else {
+
+            view = new this.options.linkView({ model: cell, interactive: this.options.interactive });
+        }
+
+        return view;
+    },
+    
+    addCell: function(cell) {
+
+        var view = this.createViewForModel(cell);
+
+        V(this.viewport).append(view.el);
+        view.paper = this;
+        view.render();
+
+        // This is the only way to prevent image dragging in Firefox that works.
+        // Setting -moz-user-select: none, draggable="false" attribute or user-drag: none didn't help.
+        $(view.el).find('image').on('dragstart', function() { return false; });
+    },
+
+    resetCells: function(cellsCollection) {
+
+        $(this.viewport).empty();
+
+        var cells = cellsCollection.models.slice();
+
+        // Make sure links are always added AFTER elements.
+        // They wouldn't find their sources/targets in the DOM otherwise.
+        cells.sort(function(a, b) { return a instanceof joint.dia.Link ? 1 : -1; });
+        
+        _.each(cells, this.addCell, this);
+
+        // Sort the cells in the DOM manually as we might have changed the order they
+        // were added to the DOM (see above).
+        this.sortCells();
+    },
+
+    sortCells: function() {
+
+        // Run insertion sort algorithm in order to efficiently sort DOM elements according to their
+        // associated model `z` attribute.
+
+        var $cells = $(this.viewport).children('[model-id]');
+        var cells = this.model.get('cells');
+
+        // Using the jquery.sortElements plugin by Padolsey.
+        // See http://james.padolsey.com/javascript/sorting-elements-with-jquery/.
+        $cells.sortElements(function(a, b) {
+
+            var cellA = cells.get($(a).attr('model-id'));
+            var cellB = cells.get($(b).attr('model-id'));
+            
+            return (cellA.get('z') || 0) > (cellB.get('z') || 0) ? 1 : -1;
+        });
+    },
+
+    scale: function(sx, sy, ox, oy) {
+
+        if (!ox) {
+
+            ox = 0;
+            oy = 0;
+        }
+
+        // Remove previous transform so that the new scale is not affected by previous scales, especially
+        // the old translate() does not affect the new translate if an origin is specified.
+        V(this.viewport).attr('transform', '');
+        
+        // TODO: V.scale() doesn't support setting scale origin. #Fix        
+        if (ox || oy) {
+            V(this.viewport).translate(-ox * (sx - 1), -oy * (sy - 1));
+        }
+        
+        V(this.viewport).scale(sx, sy);
+
+	this.trigger('scale', ox, oy);
+
+        return this;
+    },
+
+    rotate: function(deg, ox, oy) {
+        
+        // If the origin is not set explicitely, rotate around the center. Note that
+        // we must use the plain bounding box (`this.el.getBBox()` instead of the one that gives us
+        // the real bounding box (`bbox()`) including transformations).
+        if (_.isUndefined(ox)) {
+
+            var bbox = this.viewport.getBBox();
+            ox = bbox.width/2;
+            oy = bbox.height/2;
+        }
+
+        V(this.viewport).rotate(deg, ox, oy);
+    },
+
+    // Find the first view climbing up the DOM tree starting at element `el`. Note that `el` can also
+    // be a selector or a jQuery object.
+    findView: function(el) {
+
+        var $el = this.$(el);
+
+        if ($el.length === 0 || $el[0] === this.el) {
+
+            return undefined;
+        }
+
+        if ($el.data('view')) {
+
+            return $el.data('view');
+        }
+
+        return this.findView($el.parent());
+    },
+
+    // Find a view for a model `cell`. `cell` can also be a string representing a model `id`.
+    findViewByModel: function(cell) {
+
+        var id = _.isString(cell) ? cell : cell.id;
+        
+        var $view = this.$('[model-id="' + id + '"]');
+        if ($view.length) {
+
+            return $view.data('view');
+        }
+        return undefined;
+    },
+
+    // Find all views at given point
+    findViewsFromPoint: function(p) {
+
+	p = g.point(p);
+
+        var views = _.map(this.model.getElements(), this.findViewByModel);
+
+	return _.filter(views, function(view) {
+	    return g.rect(V(view.el).bbox(false, this.viewport)).containsPoint(p);
+	}, this);
+    },
+
+    // Find all views in given area
+    findViewsInArea: function(r) {
+
+	r = g.rect(r);
+
+        var views = _.map(this.model.getElements(), this.findViewByModel);
+
+	return _.filter(views, function(view) {
+	    return r.intersect(g.rect(V(view.el).bbox(false, this.viewport)));
+	}, this);
+    },
+
+    getModelById: function(id) {
+
+        return this.model.getCell(id);
+    },
+
+    snapToGrid: function(p) {
+
+        // Convert global coordinates to the local ones of the `viewport`. Otherwise,
+        // improper transformation would be applied when the viewport gets transformed (scaled/rotated). 
+        var localPoint = V(this.viewport).toLocalPoint(p.x, p.y);
+
+        return {
+            x: g.snapToGrid(localPoint.x, this.options.gridSize),
+            y: g.snapToGrid(localPoint.y, this.options.gridSize)
+        };
+    },
+
+    getDefaultLink: function(cellView, magnet) {
+
+        return _.isFunction(this.options.defaultLink)
+        // default link is a function producing link model
+            ? this.options.defultLink.call(this, cellView, magnet)
+        // default link is the Backbone model
+            : this.options.defaultLink.clone();
+    },
+
+    // Interaction.
+    // ------------
+
+    mousedblclick: function(evt) {
+        
+        evt.preventDefault();
+        evt = joint.util.normalizeEvent(evt);
+        
+        var view = this.findView(evt.target);
+        var localPoint = this.snapToGrid({ x: evt.clientX, y: evt.clientY });
+
+        if (view) {
+            
+            view.pointerdblclick(evt, localPoint.x, localPoint.y);
+            
+        } else {
+            
+            this.trigger('blank:pointerdblclick', evt, localPoint.x, localPoint.y);
+        }
+    },
+
+    pointerdown: function(evt) {
+
+        evt.preventDefault();
+        evt = joint.util.normalizeEvent(evt);
+        
+        var view = this.findView(evt.target);
+
+        var localPoint = this.snapToGrid({ x: evt.clientX, y: evt.clientY });
+        
+        if (view) {
+
+            this.sourceView = view;
+
+            view.pointerdown(evt, localPoint.x, localPoint.y);
+            
+        } else {
+
+            this.trigger('blank:pointerdown', evt, localPoint.x, localPoint.y);
+        }
+    },
+
+    pointermove: function(evt) {
+
+        evt.preventDefault();
+        evt = joint.util.normalizeEvent(evt);
+
+        if (this.sourceView) {
+
+            var localPoint = this.snapToGrid({ x: evt.clientX, y: evt.clientY });
+
+            this.sourceView.pointermove(evt, localPoint.x, localPoint.y);
+        }
+    },
+
+    pointerup: function(evt) {
+
+        evt = joint.util.normalizeEvent(evt);
+
+        var localPoint = this.snapToGrid({ x: evt.clientX, y: evt.clientY });
+        
+        if (this.sourceView) {
+
+            this.sourceView.pointerup(evt, localPoint.x, localPoint.y);
+
+            //"delete sourceView" occasionally throws an error in chrome (illegal access exception)
+	    this.sourceView = null;
+
+        } else {
+
+            this.trigger('blank:pointerup', evt, localPoint.x, localPoint.y);
+        }
+    }
+});
+
+//      JointJS library.
+//      (c) 2011-2013 client IO
+
+
+if (typeof exports === 'object') {
+
+    var joint = {
+        util: require('../src/core').util,
+        shapes: {},
+        dia: {
+            Element: require('../src/joint.dia.element').Element
+        }
+    };
+    var _ = require('lodash');
+}
+
+
+joint.shapes.basic = {};
+
+
+joint.shapes.basic.Generic = joint.dia.Element.extend({
+
+    defaults: joint.util.deepSupplement({
+        
+        type: 'basic.Generic',
+        attrs: {
+            '.': { fill: '#FFFFFF', stroke: 'none' }
+        }
+        
+    }, joint.dia.Element.prototype.defaults)
+});
+
+joint.shapes.basic.Rect = joint.shapes.basic.Generic.extend({
+
+    markup: '<g class="rotatable"><g class="scalable"><rect/></g><text/></g>',
+    
+    defaults: joint.util.deepSupplement({
+    
+        type: 'basic.Rect',
+        attrs: {
+            'rect': { fill: '#FFFFFF', stroke: 'black', width: 100, height: 60 },
+            'text': { 'font-size': 14, text: '', 'ref-x': .5, 'ref-y': .5, ref: 'rect', 'y-alignment': 'middle', 'x-alignment': 'middle', fill: 'black', 'font-family': 'Arial, helvetica, sans-serif' }
+        }
+        
+    }, joint.shapes.basic.Generic.prototype.defaults)
+});
+
+joint.shapes.basic.Text = joint.shapes.basic.Generic.extend({
+
+    markup: '<g class="rotatable"><g class="scalable"><text/></g></g>',
+    
+    defaults: joint.util.deepSupplement({
+        
+        type: 'basic.Text',
+        attrs: {
+            'text': { 'font-size': 18, fill: 'black' }
+        }
+        
+    }, joint.shapes.basic.Generic.prototype.defaults)
+});
+
+joint.shapes.basic.Circle = joint.shapes.basic.Generic.extend({
+
+    markup: '<g class="rotatable"><g class="scalable"><circle/></g><text/></g>',
+    
+    defaults: joint.util.deepSupplement({
+
+        type: 'basic.Circle',
+        size: { width: 60, height: 60 },
+        attrs: {
+            'circle': { fill: '#FFFFFF', stroke: 'black', r: 30, transform: 'translate(30, 30)' },
+            'text': { 'font-size': 14, text: '', 'text-anchor': 'middle', 'ref-x': .5, 'ref-y': .5, ref: 'circle', 'y-alignment': 'middle', fill: 'black', 'font-family': 'Arial, helvetica, sans-serif' }
+        }
+    }, joint.shapes.basic.Generic.prototype.defaults)
+});
+
+joint.shapes.basic.Image = joint.shapes.basic.Generic.extend({
+
+    markup: '<g class="rotatable"><g class="scalable"><image/></g><text/></g>',
+    
+    defaults: joint.util.deepSupplement({
+
+        type: 'basic.Image',
+        attrs: {
+            'text': { 'font-size': 14, text: '', 'text-anchor': 'middle', 'ref-x': .5, 'ref-dy': 20, ref: 'image', 'y-alignment': 'middle', fill: 'black', 'font-family': 'Arial, helvetica, sans-serif' }
+        }
+    }, joint.shapes.basic.Generic.prototype.defaults)
+});
+
+joint.shapes.basic.Path = joint.shapes.basic.Generic.extend({
+
+    markup: '<g class="rotatable"><g class="scalable"><path/></g><text/></g>',
+    
+    defaults: joint.util.deepSupplement({
+
+        type: 'basic.Path',
+        size: { width: 60, height: 60 },
+        attrs: {
+            'path': { fill: '#FFFFFF', stroke: 'black' },
+            'text': { 'font-size': 14, text: '', 'text-anchor': 'middle', 'ref-x': .5, 'ref-dy': 20, ref: 'path', 'y-alignment': 'middle', fill: 'black', 'font-family': 'Arial, helvetica, sans-serif' }
+        }
+    }, joint.shapes.basic.Generic.prototype.defaults)
+});
+
+// PortsModelInterface is a common interface for shapes that have ports. This interface makes it easy
+// to create new shapes with ports functionality. It is assumed that the new shapes have
+// `inPorts` and `outPorts` array properties. Only these properties should be used to set ports.
+// In other words, using this interface, it is no longer recommended to set ports directly through the
+// `attrs` object.
+
+// Usage:
+// joint.shapes.custom.MyElementWithPorts = joint.shapes.basic.Path.extend(_.extend({}, joint.shapes.basic.PortsModelInterface, {
+//     getPortAttrs: function(portName, index, total, selector, type) {
+//         var attrs = {};
+//         var portClass = 'port' + index;
+//         var portSelector = selector + '>.' + portClass;
+//         var portTextSelector = portSelector + '>text';
+//         var portCircleSelector = portSelector + '>circle';
+//
+//         attrs[portTextSelector] = { text: portName };
+//         attrs[portCircleSelector] = { port: { id: portName || _.uniqueId(type) , type: type } };
+//         attrs[portSelector] = { ref: 'rect', 'ref-y': (index + 0.5) * (1 / total) };
+//
+//         if (selector === '.outPorts') { attrs[portSelector]['ref-dx'] = 0; }
+//
+//         return attrs;
+//     }
+//}));
+joint.shapes.basic.PortsModelInterface = {
+
+    initialize: function() {
+
+        this.updatePortsAttrs();
+        this.on('change:inPorts change:outPorts', this.updatePortsAttrs, this);
+
+        // Call the `initialize()` of the parent.
+        this.constructor.__super__.constructor.__super__.initialize.apply(this, arguments);
+    },
+    
+    updatePortsAttrs: function(eventName) {
+
+        // Delete previously set attributes for ports.
+        var currAttrs = this.get('attrs');
+        _.each(this._portSelectors, function(selector) {
+            if (currAttrs[selector]) delete currAttrs[selector];
+        });
+        
+        // This holds keys to the `attrs` object for all the port specific attribute that
+        // we set in this method. This is necessary in order to remove previously set
+        // attributes for previous ports.
+        this._portSelectors = [];
+        
+        var attrs = {};
+        
+        _.each(this.get('inPorts'), function(portName, index, ports) {
+            var portAttributes = this.getPortAttrs(portName, index, ports.length, '.inPorts', 'in');
+            this._portSelectors = this._portSelectors.concat(_.keys(portAttributes));
+            _.extend(attrs, portAttributes);
+        }, this);
+        
+        _.each(this.get('outPorts'), function(portName, index, ports) {
+            var portAttributes = this.getPortAttrs(portName, index, ports.length, '.outPorts', 'out');
+            this._portSelectors = this._portSelectors.concat(_.keys(portAttributes));
+            _.extend(attrs, portAttributes);
+        }, this);
+
+        // Silently set `attrs` on the cell so that noone knows the attrs have changed. This makes sure
+        // that, for example, command manager does not register `change:attrs` command but only
+        // the important `change:inPorts`/`change:outPorts` command.
+        this.attr(attrs, { silent: true });
+        // Manually call the `processPorts()` method that is normally called on `change:attrs` (that we just made silent).
+        this.processPorts();
+        // Let the outside world (mainly the `ModelView`) know that we're done configuring the `attrs` object.
+        this.trigger('process:ports');
+    },
+
+    getPortSelector: function(name) {
+
+        var selector = '.inPorts';
+        var index = this.get('inPorts').indexOf(name);
+
+        if (index < 0) {
+            selector = '.outPorts';
+            index = this.get('outPorts').indexOf(name);
+
+            if (index < 0) throw new Error("getPortSelector(): Port doesn't exist.");
+        }
+
+        return selector + '>g:nth-child(' + (index + 1) + ')>circle';
+    }
+};
+
+joint.shapes.basic.PortsViewInterface = {
+    
+    initialize: function() {
+
+        // `Model` emits the `process:ports` whenever it's done configuring the `attrs` object for ports.
+        this.listenTo(this.model, 'process:ports', this.update);
+        
+        joint.dia.ElementView.prototype.initialize.apply(this, arguments);
+    },
+
+    update: function() {
+
+        // First render ports so that `attrs` can be applied to those newly created DOM elements
+        // in `ElementView.prototype.update()`.
+        this.renderPorts();
+        joint.dia.ElementView.prototype.update.apply(this, arguments);
+    },
+
+    renderPorts: function() {
+
+        var $inPorts = this.$('.inPorts').empty();
+        var $outPorts = this.$('.outPorts').empty();
+
+        var portTemplate = _.template(this.model.portMarkup);
+
+        _.each(_.filter(this.model.ports, function(p) { return p.type === 'in' }), function(port, index) {
+
+            $inPorts.append(V(portTemplate({ id: index, port: port })).node);
+        });
+        _.each(_.filter(this.model.ports, function(p) { return p.type === 'out' }), function(port, index) {
+
+            $outPorts.append(V(portTemplate({ id: index, port: port })).node);
+        });
+    }
+};
+
+joint.shapes.basic.TextBlock = joint.shapes.basic.Rect.extend({
+
+    markup: ['<g class="rotatable"><g class="scalable"><rect/></g><switch>',
+
+             // if foreignObject supported
+             '<foreignObject requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" class="fobj">',
+             '<body xmlns="http://www.w3.org/1999/xhtml"><div/></body>',
+             '</foreignObject>',
+
+             // else foreignObject is not supported (fallback for IE)
+             '<svg overflow="hidden"><text/></svg>',
+
+             '</switch></g>'].join(''),
+
+    defaults: joint.util.deepSupplement({
+
+        type: 'basic.TextBlock',
+
+        // see joint.css for the element styles
+
+        content: ''
+
+    }, joint.shapes.basic.Rect.prototype.defaults),
+
+    initialize: function() {
+
+        if (typeof SVGForeignObjectElement !== 'undefined') {
+
+            // foreignObject supported
+            this.setForeignObjectSize(this, this.get('size'));
+            this.setDivContent(this, this.get('content'));
+            this.listenTo(this, 'change:size', this.setForeignObjectSize);
+            this.listenTo(this, 'change:content', this.setDivContent);
+
+        } else {
+
+            // no foreignObject
+            this.setSvgSize(this, this.get('size'));
+            this.setTextContent(this, this.get('content'));
+            this.listenTo(this, 'change:size', this.setSvgSize);
+            this.listenTo(this, 'change:content', this.setTextContent);
+
+        }
+
+        joint.shapes.basic.Generic.prototype.initialize.apply(this, arguments);
+    },
+
+    setForeignObjectSize: function(cell, size) {
+
+        // Selector `foreignObject' doesn't work accross all browsers, we'r using class selector instead.
+        // We have to clone size as we don't want attributes.div.style to be same object as attributes.size.
+        cell.attr({
+            '.fobj': _.clone(size),
+            div: { style: _.clone(size) }
+        });
+    },
+
+    setSvgSize: function(cell, size) {
+
+        // Trim a text overflowing the element.
+        cell.attr({ svg: _.clone(size) });
+    },
+
+    setDivContent: function(cell, content) {
+
+        // Append the content to div as html.
+        cell.attr({ div : {
+            html: content
+        }});
+    },
+
+    setTextContent: function(cell, content) {
+
+        // This could be overriden in order to break the text lines to fit to a content of the element.
+        cell.attr({ text: {
+            text: content
+        }});
+    }
+
+});
+
+if (typeof exports === 'object') {
+
+    module.exports = joint.shapes.basic;
+}
\ No newline at end of file
diff --git a/lib/joint.shapes.devs.js b/lib/joint.shapes.devs.js
new file mode 100644
index 0000000..9acc07e
--- /dev/null
+++ b/lib/joint.shapes.devs.js
@@ -0,0 +1,128 @@
+/*! JointJS v0.8.1 - JavaScript diagramming library  2014-02-24 
+
+
+This Source Code Form is subject to the terms of the Mozilla Public
+License, v. 2.0. If a copy of the MPL was not distributed with this
+file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+if (typeof exports === 'object') {
+
+    var joint = {
+        util: require('../src/core').util,
+        shapes: {
+            basic: require('./joint.shapes.basic')
+        },
+        dia: {
+            ElementView: require('../src/joint.dia.element').ElementView,
+            Link: require('../src/joint.dia.link').Link
+        }
+    };
+    var _ = require('lodash');
+}
+
+joint.shapes.devs = {};
+
+joint.shapes.devs.Model = joint.shapes.basic.Generic.extend(_.extend({}, joint.shapes.basic.PortsModelInterface, {
+
+    markup: '<g class="rotatable"><g class="scalable"><rect/></g><text class="label"/><g class="inPorts"/><g class="outPorts"/></g>',
+    portMarkup: '<g class="port<%= id %>"><circle/><text/></g>',
+
+    defaults: joint.util.deepSupplement({
+
+        type: 'devs.Model',
+        size: { width: 1, height: 1 },
+        
+        inPorts: [],
+        outPorts: [],
+
+        attrs: {
+            '.': { magnet: false },
+            rect: {
+                width: 150, height: 250,
+                stroke: 'black'
+            },
+            circle: {
+                r: 10,
+                stroke: 'black'
+            },
+            text: {
+                fill: 'black',
+                'pointer-events': 'none'
+            },
+            '.label': { text: 'Model', 'ref-x': .3, 'ref-y': .2 },
+            '.inPorts text': { x:-15, dy: 4, 'text-anchor': 'end' },
+            '.outPorts text':{ x: 15, dy: 4 }
+        }
+
+    }, joint.shapes.basic.Generic.prototype.defaults),
+
+    getPortAttrs: function(portName, index, total, selector, type) {
+
+        var attrs = {};
+        
+        var portClass = 'port' + index;
+        var portSelector = selector + '>.' + portClass;
+        var portTextSelector = portSelector + '>text';
+        var portCircleSelector = portSelector + '>circle';
+
+        attrs[portTextSelector] = { text: portName };
+        attrs[portCircleSelector] = { port: { id: portName || _.uniqueId(type) , type: type } };
+        attrs[portSelector] = { ref: 'rect', 'ref-y': (index + 0.5) * (1 / total) };
+        
+        if (selector === '.outPorts') { attrs[portSelector]['ref-dx'] = 0; }
+
+        return attrs;
+    }
+}));
+
+
+joint.shapes.devs.Atomic = joint.shapes.devs.Model.extend({
+
+    defaults: joint.util.deepSupplement({
+
+        type: 'devs.Atomic',
+        size: { width: 80, height: 80 },
+        attrs: {
+            rect: { fill: 'salmon' },
+            '.label': { text: 'Atomic' },
+            '.inPorts circle': { fill: 'PaleGreen' },
+            '.outPorts circle': { fill: 'Tomato' }
+        }
+
+    }, joint.shapes.devs.Model.prototype.defaults)
+
+});
+
+joint.shapes.devs.Coupled = joint.shapes.devs.Model.extend({
+
+    defaults: joint.util.deepSupplement({
+
+        type: 'devs.Coupled',
+        size: { width: 200, height: 300 },
+        attrs: {
+            rect: { fill: 'seaGreen' },
+            '.label': { text: 'Coupled' },
+            '.inPorts circle': { fill: 'PaleGreen' },
+            '.outPorts circle': { fill: 'Tomato' }
+        }
+
+    }, joint.shapes.devs.Model.prototype.defaults)
+});
+
+joint.shapes.devs.Link = joint.dia.Link.extend({
+
+    defaults: {
+        type: 'devs.Link',
+        attrs: { '.connection' : { 'stroke-width' :  2 }}
+    }
+});
+
+joint.shapes.devs.ModelView = joint.dia.ElementView.extend(joint.shapes.basic.PortsViewInterface);
+joint.shapes.devs.AtomicView = joint.shapes.devs.ModelView;
+joint.shapes.devs.CoupledView = joint.shapes.devs.ModelView;
+
+
+if (typeof exports === 'object') {
+
+    module.exports = joint.shapes.devs;
+}
diff --git a/lib/jquery.contextmenu.js b/lib/jquery.contextmenu.js
new file mode 100644
index 0000000..f1c719a
--- /dev/null
+++ b/lib/jquery.contextmenu.js
@@ -0,0 +1,189 @@
+(function($) {
+    function returnfalse() { return false; };
+    $.fn.contextmenu = function(option) {
+        option = $.extend({ alias: "cmroot", width: 150 }, option);
+        var ruleName = null, target = null,
+	    groups = {}, mitems = {}, actions = {}, showGroups = [],
+        itemTpl = "<div class='b-m-$[type]' unselectable=on><nobr unselectable=on><span unselectable=on>$[text]</span></nobr></div>";
+        var gTemplet = $("<div/>").addClass("b-m-mpanel").attr("unselectable", "on").css("display", "none");
+        var iTemplet = $("<div/>").addClass("b-m-item").attr("unselectable", "on");
+        var sTemplet = $("<div/>").addClass("b-m-split");
+        //build group item, which has sub items
+        var buildGroup = function(obj) {
+            groups[obj.alias] = this;
+            this.gidx = obj.alias;
+            this.id = obj.alias;
+            if (obj.disable) {
+                this.disable = obj.disable;
+                this.className = "b-m-idisable";
+            }
+            $(this).width(obj.width).click(returnfalse).mousedown(returnfalse).appendTo($("body"));
+            obj = null;
+            return this;
+        };
+        var buildItem = function(obj) {
+            var T = this;
+            T.idx = obj.alias;
+            T.gidx = obj.gidx;
+            T.data = obj;
+            T.innerHTML = itemTpl.replace(/\$\[([^\]]+)\]/g, function() {
+                return obj[arguments[1]];
+            });
+            if (obj.id)
+                T.setAttribute('id', obj.id);
+            if (obj.disable) {
+                T.disable = obj.disable;
+                T.className = "b-m-idisable";
+            }
+            obj.items && (T.group = true);
+            obj.action && (actions[obj.alias] = obj.action);
+            mitems[obj.alias] = T;
+            T = obj = null;
+            return this;
+        };
+        //add new items
+        var addItems = function(gidx, items) {
+            var tmp = null;
+            for (var i = 0; i < items.length; i++) {
+                if (items[i].type == "splitLine") {
+                    //split line
+                    tmp = sTemplet.clone()[0];
+                } else {
+                    items[i].gidx = gidx;
+                    if (items[i].type == "group") {
+                        //group 
+                        buildGroup.apply(gTemplet.clone()[0], [items[i]]);
+                        arguments.callee(items[i].alias, items[i].items);
+                        items[i].type = "arrow";
+                        tmp = buildItem.apply(iTemplet.clone()[0], [items[i]]);
+                    } else {
+                        //normal item
+                        items[i].type = "ibody";
+                        tmp = buildItem.apply(iTemplet.clone()[0], [items[i]]);
+                        $(tmp).click(function(e) {
+                            if (!this.disable) {
+                                if ($.isFunction(actions[this.idx])) {
+                                    actions[this.idx].call(this, target);
+                                }
+                                hideMenuPane();
+                            }
+                            return false;
+                        });
+
+                    } //end if
+                    $(tmp).bind("contextmenu", returnfalse).hover(overItem, outItem);
+                } 
+                groups[gidx].appendChild(tmp);
+                tmp = items[i] = items[i].items = null;
+            } //end for
+            gidx = items = null;
+        };
+        var overItem = function(e) {
+            //menu item is disabled          
+            if (this.disable)
+                return false;
+            hideMenuPane.call(groups[this.gidx]);
+            //has sub items
+            if (this.group) {
+                var pos = $(this).offset();
+                var width = $(this).outerWidth();
+                showMenuGroup.apply(groups[this.idx], [pos, width]);
+            }
+            this.className = "b-m-ifocus";
+            return false;
+        };
+        //menu loses focus
+        var outItem = function(e) {
+            //disabled item
+            if (this.disable )
+                return false;
+            if (!this.group) {
+                //normal item
+                this.className = "b-m-item";
+            } //Endif
+            return false;
+        };
+        //show menu group at specified position
+        var reversed = false;
+        var showMenuGroup = function(pos, width) {
+            var bwidth = $("body").width();
+            var bheight = document.documentElement.clientHeight;
+            var mwidth = $(this).outerWidth();
+            var mheight = $(this).outerHeight();
+            var originalPosTop = pos.top;
+            pos.left = (pos.left + width + mwidth > bwidth) ? (pos.left - mwidth < 0 ? 0 : pos.left - mwidth) : pos.left + width;
+            pos.top = (pos.top + mheight > bheight) ? (pos.top - mheight + (width > 0 ? 25 : 0) < 0 ? 0 : pos.top - mheight + (width > 0 ? 25 : 0)) : pos.top;
+            var needsReversed = originalPosTop > pos.top;
+            var $this = $(this);
+            if (reversed != needsReversed)
+                $this.children().each(function(i, child) { $this.prepend(child); });
+            reversed = needsReversed;
+
+            $(this).css(pos).show();
+            showGroups.push(this.gidx);
+        };
+        //to hide menu
+        var hideMenuPane = function() {
+            var alias = null;
+            for (var i = showGroups.length - 1; i >= 0; i--) {
+                if (showGroups[i] == this.gidx)
+                    break;
+                alias = showGroups.pop();
+                groups[alias].style.display = "none";
+                mitems[alias] && (mitems[alias].className = "b-m-item");
+            } //Endfor
+            //CollectGarbage();
+        };
+        function applyRule(rule) {
+            if (ruleName && ruleName == rule.name)
+                return false;
+            for (var i in mitems)
+                disable(i, !rule.disable);
+            for (var i = 0; i < rule.items.length; i++)
+                disable(rule.items[i], rule.disable);
+            ruleName = rule.name;
+        };
+        function disable(alias, disabled) {
+            var item = mitems[alias];
+            item.className = (item.disable = item.lastChild.disabled = disabled) ? "b-m-idisable" : "b-m-item";
+        };
+
+        /* to show menu  */
+        function showMenu(e, menutarget) {
+            target = menutarget;
+            showMenuGroup.call(groups.cmroot, { left: e.pageX, top: e.pageY }, 0);
+            $(document).one('mousedown', hideMenuPane);
+        }
+        var $root = $("#" + option.alias);
+        var root = null;
+        if ($root.length == 0) {
+            root = buildGroup.apply(gTemplet.clone()[0], [option]);
+            root.applyrule = applyRule;
+            root.showMenu = showMenu;
+            addItems(option.alias, option.items);
+        }
+        else {
+            root = $root[0];
+        }
+        var me = $(this).each(function() {
+            return $(this).bind('contextmenu', function(e) {
+                var bShowContext = (option.onContextMenu && $.isFunction(option.onContextMenu)) ? option.onContextMenu.call(this, e) : true;
+                if (bShowContext) {
+                    if (option.onShow && $.isFunction(option.onShow)) {
+                        option.onShow.call(this, root);
+                    }
+                    root.showMenu(e, this);
+                }
+                return false;
+            });
+        });
+        //to apply rule
+        if (option.rule) {
+            applyRule(option.rule);
+        }
+        gTemplet = iTemplet = sTemplet = itemTpl = buildGroup = buildItem = null;
+        addItems = overItem = outItem = null;
+        //CollectGarbage();
+        return me;
+    }
+})(jQuery);
\ No newline at end of file