diff --git a/README.md b/README.md
index c431ba3..2e9e470 100644
--- a/README.md
+++ b/README.md
@@ -1,21 +1,22 @@
 # Milestone Template
 
 ## Which Project?
-[url to your project's github page](http://www.github.com)
+This will be the team's github page, but I haven't yet put my code up there. I'll update this today with another URL to a repo with code for the visualization
+[url to your project's github page](https://github.com/LoganBates/TeamKickass)
 
 ## Milestone Number
-[1,2,3, or 4]
+1
 
 ## Who Worked on this submission?
-* Johnny Mnemonic
-* Samuel Jackson
+* Irfan Nadiadi
 
 ## Describe what you're submitting
-[Give an explanation of what work you've submitted and how it fits into the progress of your project]
+I've found a really good [D3 Word Cloud generator](https://github.com/jasondavies/d3-cloud), and I have it working locally. I'm trying to adapt it now to support AJAX requests to get data, but I've run into some CORS problems. It shouldn't take too long to fix, I just need to tinker with it a little more.
 
 ## Code and Screenshots
-[Please link in relevant code and screenshots of functionality including a short explanation]
-* [code link](www.code.org) --> This is the d3 code I wrote for the visualization we want to use
-* ![screenshot](www.example.com) ---> This is a photo of our working microhpone prototype.
+Will update this afternoon with code/screenshots. I need to consolidate all the files into a repo.
+
+* [code link](wordCloud/driver.js) --> This is the d3 code for the visualization we want to use. I'm adapting the code I found from the repo linked above.
+* ![screenshot](wordCloud/screenshot.png) ---> This is a screenshot of the visualization in action.
 * 
 
diff --git a/wordCloud/d3.layout.cloud.js b/wordCloud/d3.layout.cloud.js
new file mode 100644
index 0000000..f035837
--- /dev/null
+++ b/wordCloud/d3.layout.cloud.js
@@ -0,0 +1,401 @@
+// Word cloud layout by Jason Davies, http://www.jasondavies.com/word-cloud/
+// Algorithm due to Jonathan Feinberg, http://static.mrfeinberg.com/bv_ch03.pdf
+(function() {
+  function cloud() {
+    var size = [256, 256],
+        text = cloudText,
+        font = cloudFont,
+        fontSize = cloudFontSize,
+        fontStyle = cloudFontNormal,
+        fontWeight = cloudFontNormal,
+        rotate = cloudRotate,
+        padding = cloudPadding,
+        spiral = archimedeanSpiral,
+        words = [],
+        timeInterval = Infinity,
+        event = d3.dispatch("word", "end"),
+        timer = null,
+        cloud = {};
+
+    cloud.start = function() {
+      var board = zeroArray((size[0] >> 5) * size[1]),
+          bounds = null,
+          n = words.length,
+          i = -1,
+          tags = [],
+          data = words.map(function(d, i) {
+            d.text = text.call(this, d, i);
+            d.font = font.call(this, d, i);
+            d.style = fontStyle.call(this, d, i);
+            d.weight = fontWeight.call(this, d, i);
+            d.rotate = rotate.call(this, d, i);
+            d.size = ~~fontSize.call(this, d, i);
+            d.padding = padding.call(this, d, i);
+            return d;
+          }).sort(function(a, b) { return b.size - a.size; });
+
+      if (timer) clearInterval(timer);
+      timer = setInterval(step, 0);
+      step();
+
+      return cloud;
+
+      function step() {
+        var start = +new Date,
+            d;
+        while (+new Date - start < timeInterval && ++i < n && timer) {
+          d = data[i];
+          d.x = (size[0] * (Math.random() + .5)) >> 1;
+          d.y = (size[1] * (Math.random() + .5)) >> 1;
+          cloudSprite(d, data, i);
+          if (d.hasText && place(board, d, bounds)) {
+            tags.push(d);
+            event.word(d);
+            if (bounds) cloudBounds(bounds, d);
+            else bounds = [{x: d.x + d.x0, y: d.y + d.y0}, {x: d.x + d.x1, y: d.y + d.y1}];
+            // Temporary hack
+            d.x -= size[0] >> 1;
+            d.y -= size[1] >> 1;
+          }
+        }
+        if (i >= n) {
+          cloud.stop();
+          event.end(tags, bounds);
+        }
+      }
+    }
+
+    cloud.stop = function() {
+      if (timer) {
+        clearInterval(timer);
+        timer = null;
+      }
+      return cloud;
+    };
+
+    cloud.timeInterval = function(x) {
+      if (!arguments.length) return timeInterval;
+      timeInterval = x == null ? Infinity : x;
+      return cloud;
+    };
+
+    function place(board, tag, bounds) {
+      var perimeter = [{x: 0, y: 0}, {x: size[0], y: size[1]}],
+          startX = tag.x,
+          startY = tag.y,
+          maxDelta = Math.sqrt(size[0] * size[0] + size[1] * size[1]),
+          s = spiral(size),
+          dt = Math.random() < .5 ? 1 : -1,
+          t = -dt,
+          dxdy,
+          dx,
+          dy;
+
+      while (dxdy = s(t += dt)) {
+        dx = ~~dxdy[0];
+        dy = ~~dxdy[1];
+
+        if (Math.min(dx, dy) > maxDelta) break;
+
+        tag.x = startX + dx;
+        tag.y = startY + dy;
+
+        if (tag.x + tag.x0 < 0 || tag.y + tag.y0 < 0 ||
+            tag.x + tag.x1 > size[0] || tag.y + tag.y1 > size[1]) continue;
+        // TODO only check for collisions within current bounds.
+        if (!bounds || !cloudCollide(tag, board, size[0])) {
+          if (!bounds || collideRects(tag, bounds)) {
+            var sprite = tag.sprite,
+                w = tag.width >> 5,
+                sw = size[0] >> 5,
+                lx = tag.x - (w << 4),
+                sx = lx & 0x7f,
+                msx = 32 - sx,
+                h = tag.y1 - tag.y0,
+                x = (tag.y + tag.y0) * sw + (lx >> 5),
+                last;
+            for (var j = 0; j < h; j++) {
+              last = 0;
+              for (var i = 0; i <= w; i++) {
+                board[x + i] |= (last << msx) | (i < w ? (last = sprite[j * w + i]) >>> sx : 0);
+              }
+              x += sw;
+            }
+            delete tag.sprite;
+            return true;
+          }
+        }
+      }
+      return false;
+    }
+
+    cloud.words = function(x) {
+      if (!arguments.length) return words;
+      words = x;
+      return cloud;
+    };
+
+    cloud.size = function(x) {
+      if (!arguments.length) return size;
+      size = [+x[0], +x[1]];
+      return cloud;
+    };
+
+    cloud.font = function(x) {
+      if (!arguments.length) return font;
+      font = d3.functor(x);
+      return cloud;
+    };
+
+    cloud.fontStyle = function(x) {
+      if (!arguments.length) return fontStyle;
+      fontStyle = d3.functor(x);
+      return cloud;
+    };
+
+    cloud.fontWeight = function(x) {
+      if (!arguments.length) return fontWeight;
+      fontWeight = d3.functor(x);
+      return cloud;
+    };
+
+    cloud.rotate = function(x) {
+      if (!arguments.length) return rotate;
+      rotate = d3.functor(x);
+      return cloud;
+    };
+
+    cloud.text = function(x) {
+      if (!arguments.length) return text;
+      text = d3.functor(x);
+      return cloud;
+    };
+
+    cloud.spiral = function(x) {
+      if (!arguments.length) return spiral;
+      spiral = spirals[x + ""] || x;
+      return cloud;
+    };
+
+    cloud.fontSize = function(x) {
+      if (!arguments.length) return fontSize;
+      fontSize = d3.functor(x);
+      return cloud;
+    };
+
+    cloud.padding = function(x) {
+      if (!arguments.length) return padding;
+      padding = d3.functor(x);
+      return cloud;
+    };
+
+    return d3.rebind(cloud, event, "on");
+  }
+
+  function cloudText(d) {
+    return d.text;
+  }
+
+  function cloudFont() {
+    return "serif";
+  }
+
+  function cloudFontNormal() {
+    return "normal";
+  }
+
+  function cloudFontSize(d) {
+    return Math.sqrt(d.value);
+  }
+
+  function cloudRotate() {
+    return (~~(Math.random() * 6) - 3) * 30;
+  }
+
+  function cloudPadding() {
+    return 1;
+  }
+
+  // Fetches a monochrome sprite bitmap for the specified text.
+  // Load in batches for speed.
+  function cloudSprite(d, data, di) {
+    if (d.sprite) return;
+    c.clearRect(0, 0, (cw << 5) / ratio, ch / ratio);
+    var x = 0,
+        y = 0,
+        maxh = 0,
+        n = data.length;
+    --di;
+    while (++di < n) {
+      d = data[di];
+      c.save();
+      c.font = d.style + " " + d.weight + " " + ~~((d.size + 1) / ratio) + "px " + d.font;
+      var w = c.measureText(d.text + "m").width * ratio,
+          h = d.size << 1;
+      if (d.rotate) {
+        var sr = Math.sin(d.rotate * cloudRadians),
+            cr = Math.cos(d.rotate * cloudRadians),
+            wcr = w * cr,
+            wsr = w * sr,
+            hcr = h * cr,
+            hsr = h * sr;
+        w = (Math.max(Math.abs(wcr + hsr), Math.abs(wcr - hsr)) + 0x1f) >> 5 << 5;
+        h = ~~Math.max(Math.abs(wsr + hcr), Math.abs(wsr - hcr));
+      } else {
+        w = (w + 0x1f) >> 5 << 5;
+      }
+      if (h > maxh) maxh = h;
+      if (x + w >= (cw << 5)) {
+        x = 0;
+        y += maxh;
+        maxh = 0;
+      }
+      if (y + h >= ch) break;
+      c.translate((x + (w >> 1)) / ratio, (y + (h >> 1)) / ratio);
+      if (d.rotate) c.rotate(d.rotate * cloudRadians);
+      c.fillText(d.text, 0, 0);
+      if (d.padding) c.lineWidth = 2 * d.padding, c.strokeText(d.text, 0, 0);
+      c.restore();
+      d.width = w;
+      d.height = h;
+      d.xoff = x;
+      d.yoff = y;
+      d.x1 = w >> 1;
+      d.y1 = h >> 1;
+      d.x0 = -d.x1;
+      d.y0 = -d.y1;
+      d.hasText = true;
+      x += w;
+    }
+    var pixels = c.getImageData(0, 0, (cw << 5) / ratio, ch / ratio).data,
+        sprite = [];
+    while (--di >= 0) {
+      d = data[di];
+      if (!d.hasText) continue;
+      var w = d.width,
+          w32 = w >> 5,
+          h = d.y1 - d.y0;
+      // Zero the buffer
+      for (var i = 0; i < h * w32; i++) sprite[i] = 0;
+      x = d.xoff;
+      if (x == null) return;
+      y = d.yoff;
+      var seen = 0,
+          seenRow = -1;
+      for (var j = 0; j < h; j++) {
+        for (var i = 0; i < w; i++) {
+          var k = w32 * j + (i >> 5),
+              m = pixels[((y + j) * (cw << 5) + (x + i)) << 2] ? 1 << (31 - (i % 32)) : 0;
+          sprite[k] |= m;
+          seen |= m;
+        }
+        if (seen) seenRow = j;
+        else {
+          d.y0++;
+          h--;
+          j--;
+          y++;
+        }
+      }
+      d.y1 = d.y0 + seenRow;
+      d.sprite = sprite.slice(0, (d.y1 - d.y0) * w32);
+    }
+  }
+
+  // Use mask-based collision detection.
+  function cloudCollide(tag, board, sw) {
+    sw >>= 5;
+    var sprite = tag.sprite,
+        w = tag.width >> 5,
+        lx = tag.x - (w << 4),
+        sx = lx & 0x7f,
+        msx = 32 - sx,
+        h = tag.y1 - tag.y0,
+        x = (tag.y + tag.y0) * sw + (lx >> 5),
+        last;
+    for (var j = 0; j < h; j++) {
+      last = 0;
+      for (var i = 0; i <= w; i++) {
+        if (((last << msx) | (i < w ? (last = sprite[j * w + i]) >>> sx : 0))
+            & board[x + i]) return true;
+      }
+      x += sw;
+    }
+    return false;
+  }
+
+  function cloudBounds(bounds, d) {
+    var b0 = bounds[0],
+        b1 = bounds[1];
+    if (d.x + d.x0 < b0.x) b0.x = d.x + d.x0;
+    if (d.y + d.y0 < b0.y) b0.y = d.y + d.y0;
+    if (d.x + d.x1 > b1.x) b1.x = d.x + d.x1;
+    if (d.y + d.y1 > b1.y) b1.y = d.y + d.y1;
+  }
+
+  function collideRects(a, b) {
+    return a.x + a.x1 > b[0].x && a.x + a.x0 < b[1].x && a.y + a.y1 > b[0].y && a.y + a.y0 < b[1].y;
+  }
+
+  function archimedeanSpiral(size) {
+    var e = size[0] / size[1];
+    return function(t) {
+      return [e * (t *= .1) * Math.cos(t), t * Math.sin(t)];
+    };
+  }
+
+  function rectangularSpiral(size) {
+    var dy = 4,
+        dx = dy * size[0] / size[1],
+        x = 0,
+        y = 0;
+    return function(t) {
+      var sign = t < 0 ? -1 : 1;
+      // See triangular numbers: T_n = n * (n + 1) / 2.
+      switch ((Math.sqrt(1 + 4 * sign * t) - sign) & 3) {
+        case 0:  x += dx; break;
+        case 1:  y += dy; break;
+        case 2:  x -= dx; break;
+        default: y -= dy; break;
+      }
+      return [x, y];
+    };
+  }
+
+  // TODO reuse arrays?
+  function zeroArray(n) {
+    var a = [],
+        i = -1;
+    while (++i < n) a[i] = 0;
+    return a;
+  }
+
+  var cloudRadians = Math.PI / 180,
+      cw = 1 << 11 >> 5,
+      ch = 1 << 11,
+      canvas,
+      ratio = 1;
+
+  if (typeof document !== "undefined") {
+    canvas = document.createElement("canvas");
+    canvas.width = 1;
+    canvas.height = 1;
+    ratio = Math.sqrt(canvas.getContext("2d").getImageData(0, 0, 1, 1).data.length >> 2);
+    canvas.width = (cw << 5) / ratio;
+    canvas.height = ch / ratio;
+  } else {
+    // Attempt to use node-canvas.
+    canvas = new Canvas(cw << 5, ch);
+  }
+
+  var c = canvas.getContext("2d"),
+      spirals = {
+        archimedean: archimedeanSpiral,
+        rectangular: rectangularSpiral
+      };
+  c.fillStyle = c.strokeStyle = "red";
+  c.textAlign = "center";
+
+  if (typeof module === "object" && module.exports) module.exports = cloud;
+  else (d3.layout || (d3.layout = {})).cloud = cloud;
+})();
diff --git a/wordCloud/driver.js b/wordCloud/driver.js
new file mode 100644
index 0000000..f255518
--- /dev/null
+++ b/wordCloud/driver.js
@@ -0,0 +1,351 @@
+var fill = d3.scale.category20b();
+
+var w = 960,
+    h = 600;
+
+var words = [],
+    max,
+    scale = 1,
+    complete = 0,
+    keyword = "",
+    tags,
+    fontSize,
+    maxLength = 30,
+    fetcher,
+    statusText = d3.select("#status");
+
+var layout = d3.layout.cloud()
+    .timeInterval(10)
+    .size([w, h])
+    .fontSize(function(d) { return fontSize(+d.value); })
+    .text(function(d) { return d.key; })
+    .on("word", progress)
+    .on("end", draw);
+
+var svg = d3.select("#vis").append("svg")
+    .attr("width", w)
+    .attr("height", h);
+
+var background = svg.append("g"),
+    vis = svg.append("g")
+    .attr("transform", "translate(" + [w >> 1, h >> 1] + ")");
+
+d3.select("#download-svg").on("click", downloadSVG);
+d3.select("#download-png").on("click", downloadPNG);
+
+d3.select(window).on("hashchange", hashchange);
+
+var testWords = "apple fail fail fail fail fail fail fail fail apple fail apple apple board board board";
+
+var form = d3.select("#form")
+    .on("submit", function() {
+      load(d3.select("#text").property("value"));
+      //load( testWords );
+      d3.event.preventDefault();
+    });
+form.selectAll("input[type=number]")
+    .on("click.refresh", function() {
+      if (this.value === this.defaultValue) return;
+      generate();
+      this.defaultValue = this.value;
+    });
+form.selectAll("input[type=radio], #font")
+    .on("change", generate);
+
+// From Jonathan Feinberg's cue.language, see lib/cue.language/license.txt.
+var stopWords = /^(i|me|my|myself|we|us|our|ours|ourselves|you|your|yours|yourself|yourselves|he|him|his|himself|she|her|hers|herself|it|its|itself|they|them|their|theirs|themselves|what|which|who|whom|whose|this|that|these|those|am|is|are|was|were|be|been|being|have|has|had|having|do|does|did|doing|will|would|should|can|could|ought|i'm|you're|he's|she's|it's|we're|they're|i've|you've|we've|they've|i'd|you'd|he'd|she'd|we'd|they'd|i'll|you'll|he'll|she'll|we'll|they'll|isn't|aren't|wasn't|weren't|hasn't|haven't|hadn't|doesn't|don't|didn't|won't|wouldn't|shan't|shouldn't|can't|cannot|couldn't|mustn't|let's|that's|who's|what's|here's|there's|when's|where's|why's|how's|a|an|the|and|but|if|or|because|as|until|while|of|at|by|for|with|about|against|between|into|through|during|before|after|above|below|to|from|up|upon|down|in|out|on|off|over|under|again|further|then|once|here|there|when|where|why|how|all|any|both|each|few|more|most|other|some|such|no|nor|not|only|own|same|so|than|too|very|say|says|said|shall)$/,
+    punctuation = new RegExp("[" + unicodePunctuationRe + "]", "g"),
+    wordSeparators = /[\s\u3031-\u3035\u309b\u309c\u30a0\u30fc\uff70]+/g,
+    discard = /^(@|https?:|\/\/)/,
+    htmlTags = /(<[^>]*?>|<script.*?<\/script>|<style.*?<\/style>|<head.*?><\/head>)/g,
+    matchTwitter = /^https?:\/\/([^\.]*\.)?twitter\.com/;
+
+hashchange("text.txt");
+
+function parseHTML(d) {
+  parseText(d.replace(htmlTags, " ").replace(/&#(x?)([\dA-Fa-f]{1,4});/g, function(d, hex, m) {
+    return String.fromCharCode(+((hex ? "0x" : "") + m));
+  }).replace(/&\w+;/g, " "));
+}
+
+function getURL(url, callback) {
+  statusText.text("Fetching… ");
+
+  if (matchTwitter.test(url)) {
+    var iframe = d3.select("body").append("iframe").style("display", "none");
+    d3.select(window).on("message", function() {
+      var json = JSON.parse(d3.event.data);
+      callback((Array.isArray(json) ? json : json.results).map(function(d) { return d.text; }).join("\n\n"));
+      iframe.remove();
+    });
+    iframe.attr("src", "http://jsonp.jasondavies.com/?" + encodeURIComponent(url));
+    return;
+  }
+
+  try {
+    d3.text(url, function(text) {
+      if (text == null) proxy(url, callback);
+      else callback(text);
+    });
+  } catch(e) {
+    proxy(url, callback);
+  }
+}
+
+function proxy(url, callback) {
+  d3.text("" + encodeURIComponent(url), callback);
+}
+
+function flatten(o, k) {
+  if (typeof o === "string") return o;
+  var text = [];
+  for (k in o) {
+    var v = flatten(o[k], k);
+    if (v) text.push(v);
+  }
+  return text.join(" ");
+}
+
+function parseText(text) {
+  tags = {};
+  var cases = {};
+  text.split(d3.select("#per-line").property("checked") ? /\n/g : wordSeparators).forEach(function(word) {
+    if (discard.test(word)) return;
+    word = word.replace(punctuation, "");
+    if (stopWords.test(word.toLowerCase())) return;
+    word = word.substr(0, maxLength);
+    cases[word.toLowerCase()] = word;
+    tags[word = word.toLowerCase()] = (tags[word] || 0) + 1;
+  });
+  tags = d3.entries(tags).sort(function(a, b) { return b.value - a.value; });
+  tags.forEach(function(d) { d.key = cases[d.key]; });
+  generate();
+}
+
+function generate() {
+  layout
+      .font(d3.select("#font").property("value"))
+      .spiral(d3.select("input[name=spiral]:checked").property("value"));
+  fontSize = d3.scale[d3.select("input[name=scale]:checked").property("value")]().range([10, 100]);
+  if (tags.length) fontSize.domain([+tags[tags.length - 1].value || 1, +tags[0].value]);
+  complete = 0;
+  statusText.style("display", null);
+  words = [];
+  layout.stop().words(tags.slice(0, max = Math.min(tags.length, +d3.select("#max").property("value")))).start();
+}
+
+function progress(d) {
+  statusText.text(++complete + "/" + max);
+}
+
+function draw(data, bounds) {
+  statusText.style("display", "none");
+  scale = bounds ? Math.min(
+      w / Math.abs(bounds[1].x - w / 2),
+      w / Math.abs(bounds[0].x - w / 2),
+      h / Math.abs(bounds[1].y - h / 2),
+      h / Math.abs(bounds[0].y - h / 2)) / 2 : 1;
+  words = data;
+  var text = vis.selectAll("text")
+      .data(words, function(d) { return d.text.toLowerCase(); });
+  text.transition()
+      .duration(1000)
+      .attr("transform", function(d) { return "translate(" + [d.x, d.y] + ")rotate(" + d.rotate + ")"; })
+      .style("font-size", function(d) { return d.size + "px"; });
+  text.enter().append("text")
+      .attr("text-anchor", "middle")
+      .attr("transform", function(d) { return "translate(" + [d.x, d.y] + ")rotate(" + d.rotate + ")"; })
+      .style("font-size", function(d) { return d.size + "px"; })
+      .on("click", function(d) {
+        load(d.text);
+      })
+      .style("opacity", 1e-6)
+    .transition()
+      .duration(1000)
+      .style("opacity", 1);
+  text.style("font-family", function(d) { return d.font; })
+      .style("fill", function(d) { return fill(d.text.toLowerCase()); })
+      .text(function(d) { return d.text; });
+  var exitGroup = background.append("g")
+      .attr("transform", vis.attr("transform"));
+  var exitGroupNode = exitGroup.node();
+  text.exit().each(function() {
+    exitGroupNode.appendChild(this);
+  });
+  exitGroup.transition()
+      .duration(1000)
+      .style("opacity", 1e-6)
+      .remove();
+  vis.transition()
+      .delay(1000)
+      .duration(750)
+      .attr("transform", "translate(" + [w >> 1, h >> 1] + ")scale(" + scale + ")");
+}
+
+// Converts a given word cloud to image/png.
+function downloadPNG() {
+  var canvas = document.createElement("canvas"),
+      c = canvas.getContext("2d");
+  canvas.width = w;
+  canvas.height = h;
+  c.translate(w >> 1, h >> 1);
+  c.scale(scale, scale);
+  words.forEach(function(word, i) {
+    c.save();
+    c.translate(word.x, word.y);
+    c.rotate(word.rotate * Math.PI / 180);
+    c.textAlign = "center";
+    c.fillStyle = fill(word.text.toLowerCase());
+    c.font = word.size + "px " + word.font;
+    c.fillText(word.text, 0, 0);
+    c.restore();
+  });
+  d3.select(this).attr("href", canvas.toDataURL("image/png"));
+}
+
+function downloadSVG() {
+  d3.select(this).attr("href", "data:image/svg+xml;charset=utf-8;base64," + btoa(unescape(encodeURIComponent(
+    svg.attr("version", "1.1")
+       .attr("xmlns", "http://www.w3.org/2000/svg")
+     .node().parentNode.innerHTML))));
+}
+
+function hashchange(fallback) {
+  var h = location.hash;
+  if (h && h.length > 1) {
+    h = decodeURIComponent(h.substr(1));
+    if (h !== fetcher) load(h);
+  } else if (fallback) load(fallback);
+}
+
+function load(f) {
+  fetcher = f;
+  var h = /^(https?:)?\/\//.test(fetcher)
+      ? "#" + encodeURIComponent(fetcher)
+      : "";
+  if (fetcher != null) d3.select("#text").property("value", fetcher);
+  if (location.hash !== h) location.hash = h;
+  if (h) getURL(fetcher, parseHTML);
+  else if (fetcher) parseText(fetcher);
+}
+
+d3.select("#random-palette").on("click", function() {
+  paletteJSON("http://www.colourlovers.com/api/palettes/random", {}, function(d) {
+    fill.range(d[0].colors);
+    vis.selectAll("text")
+        .style("fill", function(d) { return fill(d.text.toLowerCase()); });
+  });
+  d3.event.preventDefault();
+});
+
+(function() {
+  var r = 40.5,
+      px = 35,
+      py = 20;
+
+  var angles = d3.select("#angles").append("svg")
+      .attr("width", 2 * (r + px))
+      .attr("height", r + 1.5 * py)
+    .append("g")
+      .attr("transform", "translate(" + [r + px, r + py] +")");
+
+  angles.append("path")
+      .style("fill", "none")
+      .attr("d", ["M", -r, 0, "A", r, r, 0, 0, 1, r, 0].join(" "));
+
+  angles.append("line")
+      .attr("x1", -r - 7)
+      .attr("x2", r + 7);
+
+  angles.append("line")
+      .attr("y2", -r - 7);
+
+  angles.selectAll("text")
+      .data([-90, 0, 90])
+    .enter().append("text")
+      .attr("dy", function(d, i) { return i === 1 ? null : ".3em"; })
+      .attr("text-anchor", function(d, i) { return ["end", "middle", "start"][i]; })
+      .attr("transform", function(d) {
+        d += 90;
+        return "rotate(" + d + ")translate(" + -(r + 10) + ")rotate(" + -d + ")translate(2)";
+      })
+      .text(function(d) { return d + "°"; });
+
+  var radians = Math.PI / 180,
+      from,
+      to,
+      count,
+      scale = d3.scale.linear(),
+      arc = d3.svg.arc()
+        .innerRadius(0)
+        .outerRadius(r);
+
+  d3.selectAll("#angle-count, #angle-from, #angle-to")
+      .on("change", getAngles)
+      .on("mouseup", getAngles);
+
+  getAngles();
+
+  function getAngles() {
+    count = +d3.select("#angle-count").property("value");
+    from = Math.max(-90, Math.min(90, +d3.select("#angle-from").property("value")));
+    to = Math.max(-90, Math.min(90, +d3.select("#angle-to").property("value")));
+    update();
+  }
+
+  function update() {
+    scale.domain([0, count - 1]).range([from, to]);
+    var step = (to - from) / count;
+
+    var path = angles.selectAll("path.angle")
+        .data([{startAngle: from * radians, endAngle: to * radians}]);
+    path.enter().insert("path", "circle")
+        .attr("class", "angle")
+        .style("fill", "#fc0");
+    path.attr("d", arc);
+
+    var line = angles.selectAll("line.angle")
+        .data(d3.range(count).map(scale));
+    line.enter().append("line")
+        .attr("class", "angle");
+    line.exit().remove();
+    line.attr("transform", function(d) { return "rotate(" + (90 + d) + ")"; })
+        .attr("x2", function(d, i) { return !i || i === count - 1 ? -r - 5 : -r; });
+
+    var drag = angles.selectAll("path.drag")
+        .data([from, to]);
+    drag.enter().append("path")
+        .attr("class", "drag")
+        .attr("d", "M-9.5,0L-3,3.5L-3,-3.5Z")
+        .call(d3.behavior.drag()
+          .on("drag", function(d, i) {
+            d = (i ? to : from) + 90;
+            var start = [-r * Math.cos(d * radians), -r * Math.sin(d * radians)],
+                m = [d3.event.x, d3.event.y],
+                delta = ~~(Math.atan2(cross(start, m), dot(start, m)) / radians);
+            d = Math.max(-90, Math.min(90, d + delta - 90)); // remove this for 360°
+            delta = to - from;
+            if (i) {
+              to = d;
+              if (delta > 360) from += delta - 360;
+              else if (delta < 0) from = to;
+            } else {
+              from = d;
+              if (delta > 360) to += 360 - delta;
+              else if (delta < 0) to = from;
+            }
+            update();
+          })
+          .on("dragend", generate));
+    drag.attr("transform", function(d) { return "rotate(" + (d + 90) + ")translate(-" + r + ")"; });
+    layout.rotate(function() {
+      return scale(~~(Math.random() * count));
+    });
+    d3.select("#angle-count").property("value", count);
+    d3.select("#angle-from").property("value", from);
+    d3.select("#angle-to").property("value", to);
+  }
+
+  function cross(a, b) { return a[0] * b[1] - a[1] * b[0]; }
+  function dot(a, b) { return a[0] * b[0] + a[1] * b[1]; }
+})();
\ No newline at end of file
diff --git a/wordCloud/index.html b/wordCloud/index.html
new file mode 100644
index 0000000..a0ddbbc
--- /dev/null
+++ b/wordCloud/index.html
@@ -0,0 +1,90 @@
+
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Word Cloud Generator</title>
+<style>
+body {
+  position: relative;
+  font-family: "Helvetica Neue", sans-serif;
+  width: 960px;
+  margin: auto;
+  margin-top: 20px;
+  margin-bottom: 1em;
+}
+#vis text:hover { opacity: .7 !important; }
+#presets a { border-left: solid #666 1px; padding: 0 10px; }
+#presets a.first { border-left: none; }
+#keyword { width: 300px; }
+#fetcher { width: 500px; }
+#keyword, #go { font-size: 1.5em; }
+#text { width: 100%; height: 100px; }
+p.copy { font-size: small; }
+#form { font-size: small; position: relative; }
+hr { border: none; border-bottom: solid #ccc 1px; }
+a.active { text-decoration: none; color: #000; font-weight: bold; cursor: text; }
+#angles line, #angles path, #angles circle { stroke: #666; }
+#angles text { fill: #333; }
+#angles path.drag { fill: #666; cursor: move; }
+#angles { text-align: center; margin: 0 auto; width: 350px; }
+#angles input, #max { width: 42px; }
+</style>
+
+<div id="vis"></div>
+
+<form id="form">
+
+<p style="position: absolute; right: 0; top: 0" id="status"></p>
+
+<div style="text-align: center">
+  <div id="presets"></div>
+  <div id="custom-area">
+    <p><label for="text">Enter a URL below, or paste some text.</label>
+    <p><textarea id="text"></textarea>
+    <button id="go" type="submit">Go!</button>
+  </div>
+</div>
+
+<hr>
+
+<div style="float: right; text-align: right">
+  <p><label for="max">Number of words:</label> <input type="number" value="250" min="1" id="max">
+  <p><label for="per-line"><input type="checkbox" id="per-line"> One word per line</label>
+  <!--<p><label for="colours">Colours:</label> <a href="#" id="random-palette">get random palette</a>-->
+  <p><label>Download:</label>
+    <a id="download-svg" href="#" target="_blank">SVG</a> |
+    <a id="download-png" href="#" target="_blank">PNG</a>
+</div>
+
+<div style="float: left">
+  <p><label>Spiral:</label>
+    <label for="archimedean"><input type="radio" name="spiral" id="archimedean" value="archimedean" checked="checked"> Archimedean</label>
+    <label for="rectangular"><input type="radio" name="spiral" id="rectangular" value="rectangular"> Rectangular</label>
+  <p><label for="scale">Scale:</label>
+    <label for="scale-log"><input type="radio" name="scale" id="scale-log" value="log" checked="checked"> log n</label>
+    <label for="scale-sqrt"><input type="radio" name="scale" id="scale-sqrt" value="sqrt"> √n</label>
+    <label for="scale-linear"><input type="radio" name="scale" id="scale-linear" value="linear"> n</label>
+  <p><label for="font">Font:</label> <input type="text" id="font" value="Impact">
+</div>
+
+<div id="angles">
+  <p><input type="number" id="angle-count" value="5" min="1"> <label for="angle-count">orientations</label>
+    <label for="angle-from">from</label> <input type="number" id="angle-from" value="-60" min="-90" max="90"> °
+    <label for="angle-to">to</label> <input type="number" id="angle-to" value="60" min="-90" max="90"> °
+</div>
+
+<hr style="clear: both">
+
+<p style="float: right"><a href="about/">How the Word Cloud Generator Works</a>.
+<p style="float: left">Copyright &copy; <a href="http://www.jasondavies.com/">Jason Davies</a> 2014.  The generated word clouds may be used for any purpose.
+
+</form>
+<script src="lib/d3/d3.js"></script>
+<script src="unicode.js"></script>
+<script src="d3.layout.cloud.js"></script>
+<script src="driver.js"></script>
+
+<script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>
+<ins class="adsbygoogle" style="display:inline-block;width:728px;height:90px" data-ad-client="ca-pub-2911491153890039" data-ad-slot="2029654015"></ins>
+<script>
+(adsbygoogle = window.adsbygoogle || []).push({});
+</script>
diff --git a/wordCloud/index.js b/wordCloud/index.js
new file mode 100644
index 0000000..fdcfede
--- /dev/null
+++ b/wordCloud/index.js
@@ -0,0 +1,12 @@
+var Canvas = require("canvas"),
+    globals = {};
+
+// stash globals
+if ("Canvas" in global) globals.Canvas = global.Canvas;
+global.Canvas = Canvas;
+
+module.exports = require("./d3.layout.cloud");
+
+// restore globals
+if ("Canvas" in globals) global.Canvas = globals.Canvas;
+else delete global.Canvas;
diff --git a/wordCloud/lib/d3/LICENSE b/wordCloud/lib/d3/LICENSE
new file mode 100644
index 0000000..f154b09
--- /dev/null
+++ b/wordCloud/lib/d3/LICENSE
@@ -0,0 +1,26 @@
+Copyright (c) 2010, Michael Bostock
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the following disclaimer in the documentation
+  and/or other materials provided with the distribution.
+
+* The name Michael Bostock may not be used to endorse or promote products
+  derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL MICHAEL BOSTOCK BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/wordCloud/lib/d3/d3.js b/wordCloud/lib/d3/d3.js
new file mode 100644
index 0000000..a0c539c
--- /dev/null
+++ b/wordCloud/lib/d3/d3.js
@@ -0,0 +1,4762 @@
+(function(){if (!Date.now) Date.now = function() {
+  return +new Date;
+};
+try {
+  document.createElement("div").style.setProperty("opacity", 0, "");
+} catch (error) {
+  var d3_style_prototype = CSSStyleDeclaration.prototype,
+      d3_style_setProperty = d3_style_prototype.setProperty;
+  d3_style_prototype.setProperty = function(name, value, priority) {
+    d3_style_setProperty.call(this, name, value + "", priority);
+  };
+}
+d3 = {version: "2.7.4"}; // semver
+var d3_array = d3_arraySlice; // conversion for NodeLists
+
+function d3_arrayCopy(pseudoarray) {
+  var i = -1, n = pseudoarray.length, array = [];
+  while (++i < n) array.push(pseudoarray[i]);
+  return array;
+}
+
+function d3_arraySlice(pseudoarray) {
+  return Array.prototype.slice.call(pseudoarray);
+}
+
+try {
+  d3_array(document.documentElement.childNodes)[0].nodeType;
+} catch(e) {
+  d3_array = d3_arrayCopy;
+}
+
+var d3_arraySubclass = [].__proto__?
+
+// Until ECMAScript supports array subclassing, prototype injection works well.
+function(array, prototype) {
+  array.__proto__ = prototype;
+}:
+
+// And if your browser doesn't support __proto__, we'll use direct extension.
+function(array, prototype) {
+  for (var property in prototype) array[property] = prototype[property];
+};
+function d3_this() {
+  return this;
+}
+d3.functor = function(v) {
+  return typeof v === "function" ? v : function() { return v; };
+};
+// Copies a variable number of methods from source to target.
+d3.rebind = function(target, source) {
+  var i = 1, n = arguments.length, method;
+  while (++i < n) target[method = arguments[i]] = d3_rebind(target, source, source[method]);
+  return target;
+};
+
+// Method is assumed to be a standard D3 getter-setter:
+// If passed with no arguments, gets the value.
+// If passed with arguments, sets the value and returns the target.
+function d3_rebind(target, source, method) {
+  return function() {
+    var value = method.apply(source, arguments);
+    return arguments.length ? target : value;
+  };
+}
+d3.ascending = function(a, b) {
+  return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;
+};
+d3.descending = function(a, b) {
+  return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN;
+};
+d3.mean = function(array, f) {
+  var n = array.length,
+      a,
+      m = 0,
+      i = -1,
+      j = 0;
+  if (arguments.length === 1) {
+    while (++i < n) if (d3_number(a = array[i])) m += (a - m) / ++j;
+  } else {
+    while (++i < n) if (d3_number(a = f.call(array, array[i], i))) m += (a - m) / ++j;
+  }
+  return j ? m : undefined;
+};
+d3.median = function(array, f) {
+  if (arguments.length > 1) array = array.map(f);
+  array = array.filter(d3_number);
+  return array.length ? d3.quantile(array.sort(d3.ascending), .5) : undefined;
+};
+d3.min = function(array, f) {
+  var i = -1,
+      n = array.length,
+      a,
+      b;
+  if (arguments.length === 1) {
+    while (++i < n && ((a = array[i]) == null || a != a)) a = undefined;
+    while (++i < n) if ((b = array[i]) != null && a > b) a = b;
+  } else {
+    while (++i < n && ((a = f.call(array, array[i], i)) == null || a != a)) a = undefined;
+    while (++i < n) if ((b = f.call(array, array[i], i)) != null && a > b) a = b;
+  }
+  return a;
+};
+d3.max = function(array, f) {
+  var i = -1,
+      n = array.length,
+      a,
+      b;
+  if (arguments.length === 1) {
+    while (++i < n && ((a = array[i]) == null || a != a)) a = undefined;
+    while (++i < n) if ((b = array[i]) != null && b > a) a = b;
+  } else {
+    while (++i < n && ((a = f.call(array, array[i], i)) == null || a != a)) a = undefined;
+    while (++i < n) if ((b = f.call(array, array[i], i)) != null && b > a) a = b;
+  }
+  return a;
+};
+d3.extent = function(array, f) {
+  var i = -1,
+      n = array.length,
+      a,
+      b,
+      c;
+  if (arguments.length === 1) {
+    while (++i < n && ((a = c = array[i]) == null || a != a)) a = c = undefined;
+    while (++i < n) if ((b = array[i]) != null) {
+      if (a > b) a = b;
+      if (c < b) c = b;
+    }
+  } else {
+    while (++i < n && ((a = c = f.call(array, array[i], i)) == null || a != a)) a = undefined;
+    while (++i < n) if ((b = f.call(array, array[i], i)) != null) {
+      if (a > b) a = b;
+      if (c < b) c = b;
+    }
+  }
+  return [a, c];
+};
+d3.random = {
+  normal: function(mean, deviation) {
+    if (arguments.length < 2) deviation = 1;
+    if (arguments.length < 1) mean = 0;
+    return function() {
+      var x, y, r;
+      do {
+        x = Math.random() * 2 - 1;
+        y = Math.random() * 2 - 1;
+        r = x * x + y * y;
+      } while (!r || r > 1);
+      return mean + deviation * x * Math.sqrt(-2 * Math.log(r) / r);
+    };
+  }
+};
+function d3_number(x) {
+  return x != null && !isNaN(x);
+}
+d3.sum = function(array, f) {
+  var s = 0,
+      n = array.length,
+      a,
+      i = -1;
+
+  if (arguments.length === 1) {
+    while (++i < n) if (!isNaN(a = +array[i])) s += a;
+  } else {
+    while (++i < n) if (!isNaN(a = +f.call(array, array[i], i))) s += a;
+  }
+
+  return s;
+};
+// R-7 per <http://en.wikipedia.org/wiki/Quantile>
+d3.quantile = function(values, p) {
+  var H = (values.length - 1) * p + 1,
+      h = Math.floor(H),
+      v = values[h - 1],
+      e = H - h;
+  return e ? v + e * (values[h] - v) : v;
+};
+d3.transpose = function(matrix) {
+  return d3.zip.apply(d3, matrix);
+};
+d3.zip = function() {
+  if (!(n = arguments.length)) return [];
+  for (var i = -1, m = d3.min(arguments, d3_zipLength), zips = new Array(m); ++i < m;) {
+    for (var j = -1, n, zip = zips[i] = new Array(n); ++j < n;) {
+      zip[j] = arguments[j][i];
+    }
+  }
+  return zips;
+};
+
+function d3_zipLength(d) {
+  return d.length;
+}
+// Locate the insertion point for x in a to maintain sorted order. The
+// arguments lo and hi may be used to specify a subset of the array which should
+// be considered; by default the entire array is used. If x is already present
+// in a, the insertion point will be before (to the left of) any existing
+// entries. The return value is suitable for use as the first argument to
+// `array.splice` assuming that a is already sorted.
+//
+// The returned insertion point i partitions the array a into two halves so that
+// all v < x for v in a[lo:i] for the left side and all v >= x for v in a[i:hi]
+// for the right side.
+d3.bisectLeft = function(a, x, lo, hi) {
+  if (arguments.length < 3) lo = 0;
+  if (arguments.length < 4) hi = a.length;
+  while (lo < hi) {
+    var mid = (lo + hi) >> 1;
+    if (a[mid] < x) lo = mid + 1;
+    else hi = mid;
+  }
+  return lo;
+};
+
+// Similar to bisectLeft, but returns an insertion point which comes after (to
+// the right of) any existing entries of x in a.
+//
+// The returned insertion point i partitions the array into two halves so that
+// all v <= x for v in a[lo:i] for the left side and all v > x for v in a[i:hi]
+// for the right side.
+d3.bisect =
+d3.bisectRight = function(a, x, lo, hi) {
+  if (arguments.length < 3) lo = 0;
+  if (arguments.length < 4) hi = a.length;
+  while (lo < hi) {
+    var mid = (lo + hi) >> 1;
+    if (x < a[mid]) hi = mid;
+    else lo = mid + 1;
+  }
+  return lo;
+};
+d3.first = function(array, f) {
+  var i = 0,
+      n = array.length,
+      a = array[0],
+      b;
+  if (arguments.length === 1) f = d3.ascending;
+  while (++i < n) {
+    if (f.call(array, a, b = array[i]) > 0) {
+      a = b;
+    }
+  }
+  return a;
+};
+d3.last = function(array, f) {
+  var i = 0,
+      n = array.length,
+      a = array[0],
+      b;
+  if (arguments.length === 1) f = d3.ascending;
+  while (++i < n) {
+    if (f.call(array, a, b = array[i]) <= 0) {
+      a = b;
+    }
+  }
+  return a;
+};
+d3.nest = function() {
+  var nest = {},
+      keys = [],
+      sortKeys = [],
+      sortValues,
+      rollup;
+
+  function map(array, depth) {
+    if (depth >= keys.length) return rollup
+        ? rollup.call(nest, array) : (sortValues
+        ? array.sort(sortValues)
+        : array);
+
+    var i = -1,
+        n = array.length,
+        key = keys[depth++],
+        keyValue,
+        object,
+        o = {};
+
+    while (++i < n) {
+      if ((keyValue = key(object = array[i])) in o) {
+        o[keyValue].push(object);
+      } else {
+        o[keyValue] = [object];
+      }
+    }
+
+    for (keyValue in o) {
+      o[keyValue] = map(o[keyValue], depth);
+    }
+
+    return o;
+  }
+
+  function entries(map, depth) {
+    if (depth >= keys.length) return map;
+
+    var a = [],
+        sortKey = sortKeys[depth++],
+        key;
+
+    for (key in map) {
+      a.push({key: key, values: entries(map[key], depth)});
+    }
+
+    if (sortKey) a.sort(function(a, b) {
+      return sortKey(a.key, b.key);
+    });
+
+    return a;
+  }
+
+  nest.map = function(array) {
+    return map(array, 0);
+  };
+
+  nest.entries = function(array) {
+    return entries(map(array, 0), 0);
+  };
+
+  nest.key = function(d) {
+    keys.push(d);
+    return nest;
+  };
+
+  // Specifies the order for the most-recently specified key.
+  // Note: only applies to entries. Map keys are unordered!
+  nest.sortKeys = function(order) {
+    sortKeys[keys.length - 1] = order;
+    return nest;
+  };
+
+  // Specifies the order for leaf values.
+  // Applies to both maps and entries array.
+  nest.sortValues = function(order) {
+    sortValues = order;
+    return nest;
+  };
+
+  nest.rollup = function(f) {
+    rollup = f;
+    return nest;
+  };
+
+  return nest;
+};
+d3.keys = function(map) {
+  var keys = [];
+  for (var key in map) keys.push(key);
+  return keys;
+};
+d3.values = function(map) {
+  var values = [];
+  for (var key in map) values.push(map[key]);
+  return values;
+};
+d3.entries = function(map) {
+  var entries = [];
+  for (var key in map) entries.push({key: key, value: map[key]});
+  return entries;
+};
+d3.permute = function(array, indexes) {
+  var permutes = [],
+      i = -1,
+      n = indexes.length;
+  while (++i < n) permutes[i] = array[indexes[i]];
+  return permutes;
+};
+d3.merge = function(arrays) {
+  return Array.prototype.concat.apply([], arrays);
+};
+d3.split = function(array, f) {
+  var arrays = [],
+      values = [],
+      value,
+      i = -1,
+      n = array.length;
+  if (arguments.length < 2) f = d3_splitter;
+  while (++i < n) {
+    if (f.call(values, value = array[i], i)) {
+      values = [];
+    } else {
+      if (!values.length) arrays.push(values);
+      values.push(value);
+    }
+  }
+  return arrays;
+};
+
+function d3_splitter(d) {
+  return d == null;
+}
+function d3_collapse(s) {
+  return s.replace(/(^\s+)|(\s+$)/g, "").replace(/\s+/g, " ");
+}
+/**
+ * @param {number} start
+ * @param {number=} stop
+ * @param {number=} step
+ */
+d3.range = function(start, stop, step) {
+  if (arguments.length < 3) {
+    step = 1;
+    if (arguments.length < 2) {
+      stop = start;
+      start = 0;
+    }
+  }
+  if ((stop - start) / step == Infinity) throw new Error("infinite range");
+  var range = [],
+       i = -1,
+       j;
+  if (step < 0) while ((j = start + step * ++i) > stop) range.push(j);
+  else while ((j = start + step * ++i) < stop) range.push(j);
+  return range;
+};
+d3.requote = function(s) {
+  return s.replace(d3_requote_re, "\\$&");
+};
+
+var d3_requote_re = /[\\\^\$\*\+\?\|\[\]\(\)\.\{\}]/g;
+d3.round = function(x, n) {
+  return n
+      ? Math.round(x * (n = Math.pow(10, n))) / n
+      : Math.round(x);
+};
+d3.xhr = function(url, mime, callback) {
+  var req = new XMLHttpRequest;
+  if (arguments.length < 3) callback = mime, mime = null;
+  else if (mime && req.overrideMimeType) req.overrideMimeType(mime);
+  req.open("GET", url, true);
+  if (mime) req.setRequestHeader("Accept", mime);
+  req.onreadystatechange = function() {
+    if (req.readyState === 4) callback(req.status < 300 ? req : null);
+  };
+  req.send(null);
+};
+d3.text = function(url, mime, callback) {
+  function ready(req) {
+    callback(req && req.responseText);
+  }
+  if (arguments.length < 3) {
+    callback = mime;
+    mime = null;
+  }
+  d3.xhr(url, mime, ready);
+};
+d3.json = function(url, callback) {
+  d3.text(url, "application/json", function(text) {
+    callback(text ? JSON.parse(text) : null);
+  });
+};
+d3.html = function(url, callback) {
+  d3.text(url, "text/html", function(text) {
+    if (text != null) { // Treat empty string as valid HTML.
+      var range = document.createRange();
+      range.selectNode(document.body);
+      text = range.createContextualFragment(text);
+    }
+    callback(text);
+  });
+};
+d3.xml = function(url, mime, callback) {
+  function ready(req) {
+    callback(req && req.responseXML);
+  }
+  if (arguments.length < 3) {
+    callback = mime;
+    mime = null;
+  }
+  d3.xhr(url, mime, ready);
+};
+var d3_nsPrefix = {
+  svg: "http://www.w3.org/2000/svg",
+  xhtml: "http://www.w3.org/1999/xhtml",
+  xlink: "http://www.w3.org/1999/xlink",
+  xml: "http://www.w3.org/XML/1998/namespace",
+  xmlns: "http://www.w3.org/2000/xmlns/"
+};
+
+d3.ns = {
+  prefix: d3_nsPrefix,
+  qualify: function(name) {
+    var i = name.indexOf(":");
+    return i < 0 ? (name in d3_nsPrefix
+      ? {space: d3_nsPrefix[name], local: name} : name)
+      : {space: d3_nsPrefix[name.substring(0, i)], local: name.substring(i + 1)};
+  }
+};
+d3.dispatch = function() {
+  var dispatch = new d3_dispatch(),
+      i = -1,
+      n = arguments.length;
+  while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
+  return dispatch;
+};
+
+function d3_dispatch() {}
+
+d3_dispatch.prototype.on = function(type, listener) {
+  var i = type.indexOf("."),
+      name = "";
+
+  // Extract optional namespace, e.g., "click.foo"
+  if (i > 0) {
+    name = type.substring(i + 1);
+    type = type.substring(0, i);
+  }
+
+  return arguments.length < 2
+      ? this[type].on(name)
+      : this[type].on(name, listener);
+};
+
+function d3_dispatch_event(dispatch) {
+  var listeners = [],
+      listenerByName = {};
+
+  function event() {
+    var z = listeners, // defensive reference
+        i = -1,
+        n = z.length,
+        l;
+    while (++i < n) if (l = z[i].on) l.apply(this, arguments);
+    return dispatch;
+  }
+
+  event.on = function(name, listener) {
+    var l, i;
+
+    // return the current listener, if any
+    if (arguments.length < 2) return (l = listenerByName[name]) && l.on;
+
+    // remove the old listener, if any (with copy-on-write)
+    if (l = listenerByName[name]) {
+      l.on = null;
+      listeners = listeners.slice(0, i = listeners.indexOf(l)).concat(listeners.slice(i + 1));
+      delete listenerByName[name];
+    }
+
+    // add the new listener, if any
+    if (listener) {
+      listeners.push(listenerByName[name] = {on: listener});
+    }
+
+    return dispatch;
+  };
+
+  return event;
+}
+// TODO align
+d3.format = function(specifier) {
+  var match = d3_format_re.exec(specifier),
+      fill = match[1] || " ",
+      sign = match[3] || "",
+      zfill = match[5],
+      width = +match[6],
+      comma = match[7],
+      precision = match[8],
+      type = match[9],
+      scale = 1,
+      suffix = "",
+      integer = false;
+
+  if (precision) precision = +precision.substring(1);
+
+  if (zfill) {
+    fill = "0"; // TODO align = "=";
+    if (comma) width -= Math.floor((width - 1) / 4);
+  }
+
+  switch (type) {
+    case "n": comma = true; type = "g"; break;
+    case "%": scale = 100; suffix = "%"; type = "f"; break;
+    case "p": scale = 100; suffix = "%"; type = "r"; break;
+    case "d": integer = true; precision = 0; break;
+    case "s": scale = -1; type = "r"; break;
+  }
+
+  // If no precision is specified for r, fallback to general notation.
+  if (type == "r" && !precision) type = "g";
+
+  type = d3_format_types[type] || d3_format_typeDefault;
+
+  return function(value) {
+
+    // Return the empty string for floats formatted as ints.
+    if (integer && (value % 1)) return "";
+
+    // Convert negative to positive, and record the sign prefix.
+    var negative = (value < 0) && (value = -value) ? "\u2212" : sign;
+
+    // Apply the scale, computing it from the value's exponent for si format.
+    if (scale < 0) {
+      var prefix = d3.formatPrefix(value, precision);
+      value *= prefix.scale;
+      suffix = prefix.symbol;
+    } else {
+      value *= scale;
+    }
+
+    // Convert to the desired precision.
+    value = type(value, precision);
+
+    // If the fill character is 0, the sign and group is applied after the fill.
+    if (zfill) {
+      var length = value.length + negative.length;
+      if (length < width) value = new Array(width - length + 1).join(fill) + value;
+      if (comma) value = d3_format_group(value);
+      value = negative + value;
+    }
+
+    // Otherwise (e.g., space-filling), the sign and group is applied before.
+    else {
+      if (comma) value = d3_format_group(value);
+      value = negative + value;
+      var length = value.length;
+      if (length < width) value = new Array(width - length + 1).join(fill) + value;
+    }
+
+    return value + suffix;
+  };
+};
+
+// [[fill]align][sign][#][0][width][,][.precision][type]
+var d3_format_re = /(?:([^{])?([<>=^]))?([+\- ])?(#)?(0)?([0-9]+)?(,)?(\.[0-9]+)?([a-zA-Z%])?/;
+
+var d3_format_types = {
+  g: function(x, p) { return x.toPrecision(p); },
+  e: function(x, p) { return x.toExponential(p); },
+  f: function(x, p) { return x.toFixed(p); },
+  r: function(x, p) { return d3.round(x, p = d3_format_precision(x, p)).toFixed(Math.max(0, Math.min(20, p))); }
+};
+
+function d3_format_precision(x, p) {
+  return p - (x ? 1 + Math.floor(Math.log(x + Math.pow(10, 1 + Math.floor(Math.log(x) / Math.LN10) - p)) / Math.LN10) : 1);
+}
+
+function d3_format_typeDefault(x) {
+  return x + "";
+}
+
+// Apply comma grouping for thousands.
+function d3_format_group(value) {
+  var i = value.lastIndexOf("."),
+      f = i >= 0 ? value.substring(i) : (i = value.length, ""),
+      t = [];
+  while (i > 0) t.push(value.substring(i -= 3, i + 3));
+  return t.reverse().join(",") + f;
+}
+var d3_formatPrefixes = ["y","z","a","f","p","n","μ","m","","k","M","G","T","P","E","Z","Y"].map(d3_formatPrefix);
+
+d3.formatPrefix = function(value, precision) {
+  var i = 0;
+  if (value) {
+    if (value < 0) value *= -1;
+    if (precision) value = d3.round(value, d3_format_precision(value, precision));
+    i = 1 + Math.floor(1e-12 + Math.log(value) / Math.LN10);
+    i = Math.max(-24, Math.min(24, Math.floor((i <= 0 ? i + 1 : i - 1) / 3) * 3));
+  }
+  return d3_formatPrefixes[8 + i / 3];
+};
+
+function d3_formatPrefix(d, i) {
+  return {
+    scale: Math.pow(10, (8 - i) * 3),
+    symbol: d
+  };
+}
+
+/*
+ * TERMS OF USE - EASING EQUATIONS
+ *
+ * Open source under the BSD License.
+ *
+ * Copyright 2001 Robert Penner
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice, this
+ *   list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright notice,
+ *   this list of conditions and the following disclaimer in the documentation
+ *   and/or other materials provided with the distribution.
+ *
+ * - Neither the name of the author nor the names of contributors may be used to
+ *   endorse or promote products derived from this software without specific
+ *   prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+var d3_ease_quad = d3_ease_poly(2),
+    d3_ease_cubic = d3_ease_poly(3);
+
+var d3_ease = {
+  linear: function() { return d3_ease_linear; },
+  poly: d3_ease_poly,
+  quad: function() { return d3_ease_quad; },
+  cubic: function() { return d3_ease_cubic; },
+  sin: function() { return d3_ease_sin; },
+  exp: function() { return d3_ease_exp; },
+  circle: function() { return d3_ease_circle; },
+  elastic: d3_ease_elastic,
+  back: d3_ease_back,
+  bounce: function() { return d3_ease_bounce; }
+};
+
+var d3_ease_mode = {
+  "in": function(f) { return f; },
+  "out": d3_ease_reverse,
+  "in-out": d3_ease_reflect,
+  "out-in": function(f) { return d3_ease_reflect(d3_ease_reverse(f)); }
+};
+
+d3.ease = function(name) {
+  var i = name.indexOf("-"),
+      t = i >= 0 ? name.substring(0, i) : name,
+      m = i >= 0 ? name.substring(i + 1) : "in";
+  return d3_ease_clamp(d3_ease_mode[m](d3_ease[t].apply(null, Array.prototype.slice.call(arguments, 1))));
+};
+
+function d3_ease_clamp(f) {
+  return function(t) {
+    return t <= 0 ? 0 : t >= 1 ? 1 : f(t);
+  };
+}
+
+function d3_ease_reverse(f) {
+  return function(t) {
+    return 1 - f(1 - t);
+  };
+}
+
+function d3_ease_reflect(f) {
+  return function(t) {
+    return .5 * (t < .5 ? f(2 * t) : (2 - f(2 - 2 * t)));
+  };
+}
+
+function d3_ease_linear(t) {
+  return t;
+}
+
+function d3_ease_poly(e) {
+  return function(t) {
+    return Math.pow(t, e);
+  }
+}
+
+function d3_ease_sin(t) {
+  return 1 - Math.cos(t * Math.PI / 2);
+}
+
+function d3_ease_exp(t) {
+  return Math.pow(2, 10 * (t - 1));
+}
+
+function d3_ease_circle(t) {
+  return 1 - Math.sqrt(1 - t * t);
+}
+
+function d3_ease_elastic(a, p) {
+  var s;
+  if (arguments.length < 2) p = 0.45;
+  if (arguments.length < 1) { a = 1; s = p / 4; }
+  else s = p / (2 * Math.PI) * Math.asin(1 / a);
+  return function(t) {
+    return 1 + a * Math.pow(2, 10 * -t) * Math.sin((t - s) * 2 * Math.PI / p);
+  };
+}
+
+function d3_ease_back(s) {
+  if (!s) s = 1.70158;
+  return function(t) {
+    return t * t * ((s + 1) * t - s);
+  };
+}
+
+function d3_ease_bounce(t) {
+  return t < 1 / 2.75 ? 7.5625 * t * t
+      : t < 2 / 2.75 ? 7.5625 * (t -= 1.5 / 2.75) * t + .75
+      : t < 2.5 / 2.75 ? 7.5625 * (t -= 2.25 / 2.75) * t + .9375
+      : 7.5625 * (t -= 2.625 / 2.75) * t + .984375;
+}
+d3.event = null;
+
+function d3_eventCancel() {
+  d3.event.stopPropagation();
+  d3.event.preventDefault();
+}
+d3.interpolate = function(a, b) {
+  var i = d3.interpolators.length, f;
+  while (--i >= 0 && !(f = d3.interpolators[i](a, b)));
+  return f;
+};
+
+d3.interpolateNumber = function(a, b) {
+  b -= a;
+  return function(t) { return a + b * t; };
+};
+
+d3.interpolateRound = function(a, b) {
+  b -= a;
+  return function(t) { return Math.round(a + b * t); };
+};
+
+d3.interpolateString = function(a, b) {
+  var m, // current match
+      i, // current index
+      j, // current index (for coallescing)
+      s0 = 0, // start index of current string prefix
+      s1 = 0, // end index of current string prefix
+      s = [], // string constants and placeholders
+      q = [], // number interpolators
+      n, // q.length
+      o;
+
+  // Reset our regular expression!
+  d3_interpolate_number.lastIndex = 0;
+
+  // Find all numbers in b.
+  for (i = 0; m = d3_interpolate_number.exec(b); ++i) {
+    if (m.index) s.push(b.substring(s0, s1 = m.index));
+    q.push({i: s.length, x: m[0]});
+    s.push(null);
+    s0 = d3_interpolate_number.lastIndex;
+  }
+  if (s0 < b.length) s.push(b.substring(s0));
+
+  // Find all numbers in a.
+  for (i = 0, n = q.length; (m = d3_interpolate_number.exec(a)) && i < n; ++i) {
+    o = q[i];
+    if (o.x == m[0]) { // The numbers match, so coallesce.
+      if (o.i) {
+        if (s[o.i + 1] == null) { // This match is followed by another number.
+          s[o.i - 1] += o.x;
+          s.splice(o.i, 1);
+          for (j = i + 1; j < n; ++j) q[j].i--;
+        } else { // This match is followed by a string, so coallesce twice.
+          s[o.i - 1] += o.x + s[o.i + 1];
+          s.splice(o.i, 2);
+          for (j = i + 1; j < n; ++j) q[j].i -= 2;
+        }
+      } else {
+          if (s[o.i + 1] == null) { // This match is followed by another number.
+          s[o.i] = o.x;
+        } else { // This match is followed by a string, so coallesce twice.
+          s[o.i] = o.x + s[o.i + 1];
+          s.splice(o.i + 1, 1);
+          for (j = i + 1; j < n; ++j) q[j].i--;
+        }
+      }
+      q.splice(i, 1);
+      n--;
+      i--;
+    } else {
+      o.x = d3.interpolateNumber(parseFloat(m[0]), parseFloat(o.x));
+    }
+  }
+
+  // Remove any numbers in b not found in a.
+  while (i < n) {
+    o = q.pop();
+    if (s[o.i + 1] == null) { // This match is followed by another number.
+      s[o.i] = o.x;
+    } else { // This match is followed by a string, so coallesce twice.
+      s[o.i] = o.x + s[o.i + 1];
+      s.splice(o.i + 1, 1);
+    }
+    n--;
+  }
+
+  // Special optimization for only a single match.
+  if (s.length === 1) {
+    return s[0] == null ? q[0].x : function() { return b; };
+  }
+
+  // Otherwise, interpolate each of the numbers and rejoin the string.
+  return function(t) {
+    for (i = 0; i < n; ++i) s[(o = q[i]).i] = o.x(t);
+    return s.join("");
+  };
+};
+
+d3.interpolateTransform = function(a, b) {
+  var s = [], // string constants and placeholders
+      q = [], // number interpolators
+      n,
+      A = d3.transform(a),
+      B = d3.transform(b),
+      ta = A.translate,
+      tb = B.translate,
+      ra = A.rotate,
+      rb = B.rotate,
+      wa = A.skew,
+      wb = B.skew,
+      ka = A.scale,
+      kb = B.scale;
+
+  if (ta[0] != tb[0] || ta[1] != tb[1]) {
+    s.push("translate(", null, ",", null, ")");
+    q.push({i: 1, x: d3.interpolateNumber(ta[0], tb[0])}, {i: 3, x: d3.interpolateNumber(ta[1], tb[1])});
+  } else if (tb[0] || tb[1]) {
+    s.push("translate(" + tb + ")");
+  } else {
+    s.push("");
+  }
+
+  if (ra != rb) {
+    q.push({i: s.push(s.pop() + "rotate(", null, ")") - 2, x: d3.interpolateNumber(ra, rb)});
+  } else if (rb) {
+    s.push(s.pop() + "rotate(" + rb + ")");
+  }
+
+  if (wa != wb) {
+    q.push({i: s.push(s.pop() + "skewX(", null, ")") - 2, x: d3.interpolateNumber(wa, wb)});
+  } else if (wb) {
+    s.push(s.pop() + "skewX(" + wb + ")");
+  }
+
+  if (ka[0] != kb[0] || ka[1] != kb[1]) {
+    n = s.push(s.pop() + "scale(", null, ",", null, ")");
+    q.push({i: n - 4, x: d3.interpolateNumber(ka[0], kb[0])}, {i: n - 2, x: d3.interpolateNumber(ka[1], kb[1])});
+  } else if (kb[0] != 1 || kb[1] != 1) {
+    s.push(s.pop() + "scale(" + kb + ")");
+  }
+
+  n = q.length;
+  return function(t) {
+    var i = -1, o;
+    while (++i < n) s[(o = q[i]).i] = o.x(t);
+    return s.join("");
+  };
+};
+
+d3.interpolateRgb = function(a, b) {
+  a = d3.rgb(a);
+  b = d3.rgb(b);
+  var ar = a.r,
+      ag = a.g,
+      ab = a.b,
+      br = b.r - ar,
+      bg = b.g - ag,
+      bb = b.b - ab;
+  return function(t) {
+    return "#"
+        + d3_rgb_hex(Math.round(ar + br * t))
+        + d3_rgb_hex(Math.round(ag + bg * t))
+        + d3_rgb_hex(Math.round(ab + bb * t));
+  };
+};
+
+// interpolates HSL space, but outputs RGB string (for compatibility)
+d3.interpolateHsl = function(a, b) {
+  a = d3.hsl(a);
+  b = d3.hsl(b);
+  var h0 = a.h,
+      s0 = a.s,
+      l0 = a.l,
+      h1 = b.h - h0,
+      s1 = b.s - s0,
+      l1 = b.l - l0;
+  return function(t) {
+    return d3_hsl_rgb(h0 + h1 * t, s0 + s1 * t, l0 + l1 * t).toString();
+  };
+};
+
+d3.interpolateArray = function(a, b) {
+  var x = [],
+      c = [],
+      na = a.length,
+      nb = b.length,
+      n0 = Math.min(a.length, b.length),
+      i;
+  for (i = 0; i < n0; ++i) x.push(d3.interpolate(a[i], b[i]));
+  for (; i < na; ++i) c[i] = a[i];
+  for (; i < nb; ++i) c[i] = b[i];
+  return function(t) {
+    for (i = 0; i < n0; ++i) c[i] = x[i](t);
+    return c;
+  };
+};
+
+d3.interpolateObject = function(a, b) {
+  var i = {},
+      c = {},
+      k;
+  for (k in a) {
+    if (k in b) {
+      i[k] = d3_interpolateByName(k)(a[k], b[k]);
+    } else {
+      c[k] = a[k];
+    }
+  }
+  for (k in b) {
+    if (!(k in a)) {
+      c[k] = b[k];
+    }
+  }
+  return function(t) {
+    for (k in i) c[k] = i[k](t);
+    return c;
+  };
+}
+
+var d3_interpolate_number = /[-+]?(?:\d*\.?\d+)(?:[eE][-+]?\d+)?/g;
+
+function d3_interpolateByName(n) {
+  return n == "transform"
+      ? d3.interpolateTransform
+      : d3.interpolate;
+}
+
+d3.interpolators = [
+  d3.interpolateObject,
+  function(a, b) { return (b instanceof Array) && d3.interpolateArray(a, b); },
+  function(a, b) { return (typeof a === "string" || typeof b === "string") && d3.interpolateString(a + "", b + ""); },
+  function(a, b) { return (typeof b === "string" ? b in d3_rgb_names || /^(#|rgb\(|hsl\()/.test(b) : b instanceof d3_Rgb || b instanceof d3_Hsl) && d3.interpolateRgb(a, b); },
+  function(a, b) { return !isNaN(a = +a) && !isNaN(b = +b) && d3.interpolateNumber(a, b); }
+];
+function d3_uninterpolateNumber(a, b) {
+  b = b - (a = +a) ? 1 / (b - a) : 0;
+  return function(x) { return (x - a) * b; };
+}
+
+function d3_uninterpolateClamp(a, b) {
+  b = b - (a = +a) ? 1 / (b - a) : 0;
+  return function(x) { return Math.max(0, Math.min(1, (x - a) * b)); };
+}
+d3.rgb = function(r, g, b) {
+  return arguments.length === 1
+      ? (r instanceof d3_Rgb ? d3_rgb(r.r, r.g, r.b)
+      : d3_rgb_parse("" + r, d3_rgb, d3_hsl_rgb))
+      : d3_rgb(~~r, ~~g, ~~b);
+};
+
+function d3_rgb(r, g, b) {
+  return new d3_Rgb(r, g, b);
+}
+
+function d3_Rgb(r, g, b) {
+  this.r = r;
+  this.g = g;
+  this.b = b;
+}
+
+d3_Rgb.prototype.brighter = function(k) {
+  k = Math.pow(0.7, arguments.length ? k : 1);
+  var r = this.r,
+      g = this.g,
+      b = this.b,
+      i = 30;
+  if (!r && !g && !b) return d3_rgb(i, i, i);
+  if (r && r < i) r = i;
+  if (g && g < i) g = i;
+  if (b && b < i) b = i;
+  return d3_rgb(
+      Math.min(255, Math.floor(r / k)),
+      Math.min(255, Math.floor(g / k)),
+      Math.min(255, Math.floor(b / k)));
+};
+
+d3_Rgb.prototype.darker = function(k) {
+  k = Math.pow(0.7, arguments.length ? k : 1);
+  return d3_rgb(
+      Math.floor(k * this.r),
+      Math.floor(k * this.g),
+      Math.floor(k * this.b));
+};
+
+d3_Rgb.prototype.hsl = function() {
+  return d3_rgb_hsl(this.r, this.g, this.b);
+};
+
+d3_Rgb.prototype.toString = function() {
+  return "#" + d3_rgb_hex(this.r) + d3_rgb_hex(this.g) + d3_rgb_hex(this.b);
+};
+
+function d3_rgb_hex(v) {
+  return v < 0x10
+      ? "0" + Math.max(0, v).toString(16)
+      : Math.min(255, v).toString(16);
+}
+
+function d3_rgb_parse(format, rgb, hsl) {
+  var r = 0, // red channel; int in [0, 255]
+      g = 0, // green channel; int in [0, 255]
+      b = 0, // blue channel; int in [0, 255]
+      m1, // CSS color specification match
+      m2, // CSS color specification type (e.g., rgb)
+      name;
+
+  /* Handle hsl, rgb. */
+  m1 = /([a-z]+)\((.*)\)/i.exec(format);
+  if (m1) {
+    m2 = m1[2].split(",");
+    switch (m1[1]) {
+      case "hsl": {
+        return hsl(
+          parseFloat(m2[0]), // degrees
+          parseFloat(m2[1]) / 100, // percentage
+          parseFloat(m2[2]) / 100 // percentage
+        );
+      }
+      case "rgb": {
+        return rgb(
+          d3_rgb_parseNumber(m2[0]),
+          d3_rgb_parseNumber(m2[1]),
+          d3_rgb_parseNumber(m2[2])
+        );
+      }
+    }
+  }
+
+  /* Named colors. */
+  if (name = d3_rgb_names[format]) return rgb(name.r, name.g, name.b);
+
+  /* Hexadecimal colors: #rgb and #rrggbb. */
+  if (format != null && format.charAt(0) === "#") {
+    if (format.length === 4) {
+      r = format.charAt(1); r += r;
+      g = format.charAt(2); g += g;
+      b = format.charAt(3); b += b;
+    } else if (format.length === 7) {
+      r = format.substring(1, 3);
+      g = format.substring(3, 5);
+      b = format.substring(5, 7);
+    }
+    r = parseInt(r, 16);
+    g = parseInt(g, 16);
+    b = parseInt(b, 16);
+  }
+
+  return rgb(r, g, b);
+}
+
+function d3_rgb_hsl(r, g, b) {
+  var min = Math.min(r /= 255, g /= 255, b /= 255),
+      max = Math.max(r, g, b),
+      d = max - min,
+      h,
+      s,
+      l = (max + min) / 2;
+  if (d) {
+    s = l < .5 ? d / (max + min) : d / (2 - max - min);
+    if (r == max) h = (g - b) / d + (g < b ? 6 : 0);
+    else if (g == max) h = (b - r) / d + 2;
+    else h = (r - g) / d + 4;
+    h *= 60;
+  } else {
+    s = h = 0;
+  }
+  return d3_hsl(h, s, l);
+}
+
+function d3_rgb_parseNumber(c) { // either integer or percentage
+  var f = parseFloat(c);
+  return c.charAt(c.length - 1) === "%" ? Math.round(f * 2.55) : f;
+}
+
+var d3_rgb_names = {
+  aliceblue: "#f0f8ff",
+  antiquewhite: "#faebd7",
+  aqua: "#00ffff",
+  aquamarine: "#7fffd4",
+  azure: "#f0ffff",
+  beige: "#f5f5dc",
+  bisque: "#ffe4c4",
+  black: "#000000",
+  blanchedalmond: "#ffebcd",
+  blue: "#0000ff",
+  blueviolet: "#8a2be2",
+  brown: "#a52a2a",
+  burlywood: "#deb887",
+  cadetblue: "#5f9ea0",
+  chartreuse: "#7fff00",
+  chocolate: "#d2691e",
+  coral: "#ff7f50",
+  cornflowerblue: "#6495ed",
+  cornsilk: "#fff8dc",
+  crimson: "#dc143c",
+  cyan: "#00ffff",
+  darkblue: "#00008b",
+  darkcyan: "#008b8b",
+  darkgoldenrod: "#b8860b",
+  darkgray: "#a9a9a9",
+  darkgreen: "#006400",
+  darkgrey: "#a9a9a9",
+  darkkhaki: "#bdb76b",
+  darkmagenta: "#8b008b",
+  darkolivegreen: "#556b2f",
+  darkorange: "#ff8c00",
+  darkorchid: "#9932cc",
+  darkred: "#8b0000",
+  darksalmon: "#e9967a",
+  darkseagreen: "#8fbc8f",
+  darkslateblue: "#483d8b",
+  darkslategray: "#2f4f4f",
+  darkslategrey: "#2f4f4f",
+  darkturquoise: "#00ced1",
+  darkviolet: "#9400d3",
+  deeppink: "#ff1493",
+  deepskyblue: "#00bfff",
+  dimgray: "#696969",
+  dimgrey: "#696969",
+  dodgerblue: "#1e90ff",
+  firebrick: "#b22222",
+  floralwhite: "#fffaf0",
+  forestgreen: "#228b22",
+  fuchsia: "#ff00ff",
+  gainsboro: "#dcdcdc",
+  ghostwhite: "#f8f8ff",
+  gold: "#ffd700",
+  goldenrod: "#daa520",
+  gray: "#808080",
+  green: "#008000",
+  greenyellow: "#adff2f",
+  grey: "#808080",
+  honeydew: "#f0fff0",
+  hotpink: "#ff69b4",
+  indianred: "#cd5c5c",
+  indigo: "#4b0082",
+  ivory: "#fffff0",
+  khaki: "#f0e68c",
+  lavender: "#e6e6fa",
+  lavenderblush: "#fff0f5",
+  lawngreen: "#7cfc00",
+  lemonchiffon: "#fffacd",
+  lightblue: "#add8e6",
+  lightcoral: "#f08080",
+  lightcyan: "#e0ffff",
+  lightgoldenrodyellow: "#fafad2",
+  lightgray: "#d3d3d3",
+  lightgreen: "#90ee90",
+  lightgrey: "#d3d3d3",
+  lightpink: "#ffb6c1",
+  lightsalmon: "#ffa07a",
+  lightseagreen: "#20b2aa",
+  lightskyblue: "#87cefa",
+  lightslategray: "#778899",
+  lightslategrey: "#778899",
+  lightsteelblue: "#b0c4de",
+  lightyellow: "#ffffe0",
+  lime: "#00ff00",
+  limegreen: "#32cd32",
+  linen: "#faf0e6",
+  magenta: "#ff00ff",
+  maroon: "#800000",
+  mediumaquamarine: "#66cdaa",
+  mediumblue: "#0000cd",
+  mediumorchid: "#ba55d3",
+  mediumpurple: "#9370db",
+  mediumseagreen: "#3cb371",
+  mediumslateblue: "#7b68ee",
+  mediumspringgreen: "#00fa9a",
+  mediumturquoise: "#48d1cc",
+  mediumvioletred: "#c71585",
+  midnightblue: "#191970",
+  mintcream: "#f5fffa",
+  mistyrose: "#ffe4e1",
+  moccasin: "#ffe4b5",
+  navajowhite: "#ffdead",
+  navy: "#000080",
+  oldlace: "#fdf5e6",
+  olive: "#808000",
+  olivedrab: "#6b8e23",
+  orange: "#ffa500",
+  orangered: "#ff4500",
+  orchid: "#da70d6",
+  palegoldenrod: "#eee8aa",
+  palegreen: "#98fb98",
+  paleturquoise: "#afeeee",
+  palevioletred: "#db7093",
+  papayawhip: "#ffefd5",
+  peachpuff: "#ffdab9",
+  peru: "#cd853f",
+  pink: "#ffc0cb",
+  plum: "#dda0dd",
+  powderblue: "#b0e0e6",
+  purple: "#800080",
+  red: "#ff0000",
+  rosybrown: "#bc8f8f",
+  royalblue: "#4169e1",
+  saddlebrown: "#8b4513",
+  salmon: "#fa8072",
+  sandybrown: "#f4a460",
+  seagreen: "#2e8b57",
+  seashell: "#fff5ee",
+  sienna: "#a0522d",
+  silver: "#c0c0c0",
+  skyblue: "#87ceeb",
+  slateblue: "#6a5acd",
+  slategray: "#708090",
+  slategrey: "#708090",
+  snow: "#fffafa",
+  springgreen: "#00ff7f",
+  steelblue: "#4682b4",
+  tan: "#d2b48c",
+  teal: "#008080",
+  thistle: "#d8bfd8",
+  tomato: "#ff6347",
+  turquoise: "#40e0d0",
+  violet: "#ee82ee",
+  wheat: "#f5deb3",
+  white: "#ffffff",
+  whitesmoke: "#f5f5f5",
+  yellow: "#ffff00",
+  yellowgreen: "#9acd32"
+};
+
+for (var d3_rgb_name in d3_rgb_names) {
+  d3_rgb_names[d3_rgb_name] = d3_rgb_parse(
+      d3_rgb_names[d3_rgb_name],
+      d3_rgb,
+      d3_hsl_rgb);
+}
+d3.hsl = function(h, s, l) {
+  return arguments.length === 1
+      ? (h instanceof d3_Hsl ? d3_hsl(h.h, h.s, h.l)
+      : d3_rgb_parse("" + h, d3_rgb_hsl, d3_hsl))
+      : d3_hsl(+h, +s, +l);
+};
+
+function d3_hsl(h, s, l) {
+  return new d3_Hsl(h, s, l);
+}
+
+function d3_Hsl(h, s, l) {
+  this.h = h;
+  this.s = s;
+  this.l = l;
+}
+
+d3_Hsl.prototype.brighter = function(k) {
+  k = Math.pow(0.7, arguments.length ? k : 1);
+  return d3_hsl(this.h, this.s, this.l / k);
+};
+
+d3_Hsl.prototype.darker = function(k) {
+  k = Math.pow(0.7, arguments.length ? k : 1);
+  return d3_hsl(this.h, this.s, k * this.l);
+};
+
+d3_Hsl.prototype.rgb = function() {
+  return d3_hsl_rgb(this.h, this.s, this.l);
+};
+
+d3_Hsl.prototype.toString = function() {
+  return this.rgb().toString();
+};
+
+function d3_hsl_rgb(h, s, l) {
+  var m1,
+      m2;
+
+  /* Some simple corrections for h, s and l. */
+  h = h % 360; if (h < 0) h += 360;
+  s = s < 0 ? 0 : s > 1 ? 1 : s;
+  l = l < 0 ? 0 : l > 1 ? 1 : l;
+
+  /* From FvD 13.37, CSS Color Module Level 3 */
+  m2 = l <= .5 ? l * (1 + s) : l + s - l * s;
+  m1 = 2 * l - m2;
+
+  function v(h) {
+    if (h > 360) h -= 360;
+    else if (h < 0) h += 360;
+    if (h < 60) return m1 + (m2 - m1) * h / 60;
+    if (h < 180) return m2;
+    if (h < 240) return m1 + (m2 - m1) * (240 - h) / 60;
+    return m1;
+  }
+
+  function vv(h) {
+    return Math.round(v(h) * 255);
+  }
+
+  return d3_rgb(vv(h + 120), vv(h), vv(h - 120));
+}
+function d3_selection(groups) {
+  d3_arraySubclass(groups, d3_selectionPrototype);
+  return groups;
+}
+
+var d3_select = function(s, n) { return n.querySelector(s); },
+    d3_selectAll = function(s, n) { return n.querySelectorAll(s); },
+    d3_selectRoot = document.documentElement,
+    d3_selectMatcher = d3_selectRoot.matchesSelector || d3_selectRoot.webkitMatchesSelector || d3_selectRoot.mozMatchesSelector || d3_selectRoot.msMatchesSelector || d3_selectRoot.oMatchesSelector,
+    d3_selectMatches = function(n, s) { return d3_selectMatcher.call(n, s); };
+
+// Prefer Sizzle, if available.
+if (typeof Sizzle === "function") {
+  d3_select = function(s, n) { return Sizzle(s, n)[0]; };
+  d3_selectAll = function(s, n) { return Sizzle.uniqueSort(Sizzle(s, n)); };
+  d3_selectMatches = Sizzle.matchesSelector;
+}
+
+var d3_selectionPrototype = [];
+
+d3.selection = function() {
+  return d3_selectionRoot;
+};
+
+d3.selection.prototype = d3_selectionPrototype;
+d3_selectionPrototype.select = function(selector) {
+  var subgroups = [],
+      subgroup,
+      subnode,
+      group,
+      node;
+
+  if (typeof selector !== "function") selector = d3_selection_selector(selector);
+
+  for (var j = -1, m = this.length; ++j < m;) {
+    subgroups.push(subgroup = []);
+    subgroup.parentNode = (group = this[j]).parentNode;
+    for (var i = -1, n = group.length; ++i < n;) {
+      if (node = group[i]) {
+        subgroup.push(subnode = selector.call(node, node.__data__, i));
+        if (subnode && "__data__" in node) subnode.__data__ = node.__data__;
+      } else {
+        subgroup.push(null);
+      }
+    }
+  }
+
+  return d3_selection(subgroups);
+};
+
+function d3_selection_selector(selector) {
+  return function() {
+    return d3_select(selector, this);
+  };
+}
+d3_selectionPrototype.selectAll = function(selector) {
+  var subgroups = [],
+      subgroup,
+      node;
+
+  if (typeof selector !== "function") selector = d3_selection_selectorAll(selector);
+
+  for (var j = -1, m = this.length; ++j < m;) {
+    for (var group = this[j], i = -1, n = group.length; ++i < n;) {
+      if (node = group[i]) {
+        subgroups.push(subgroup = d3_array(selector.call(node, node.__data__, i)));
+        subgroup.parentNode = node;
+      }
+    }
+  }
+
+  return d3_selection(subgroups);
+};
+
+function d3_selection_selectorAll(selector) {
+  return function() {
+    return d3_selectAll(selector, this);
+  };
+}
+d3_selectionPrototype.attr = function(name, value) {
+  name = d3.ns.qualify(name);
+
+  // If no value is specified, return the first value.
+  if (arguments.length < 2) {
+    var node = this.node();
+    return name.local
+        ? node.getAttributeNS(name.space, name.local)
+        : node.getAttribute(name);
+  }
+
+  function attrNull() {
+    this.removeAttribute(name);
+  }
+
+  function attrNullNS() {
+    this.removeAttributeNS(name.space, name.local);
+  }
+
+  function attrConstant() {
+    this.setAttribute(name, value);
+  }
+
+  function attrConstantNS() {
+    this.setAttributeNS(name.space, name.local, value);
+  }
+
+  function attrFunction() {
+    var x = value.apply(this, arguments);
+    if (x == null) this.removeAttribute(name);
+    else this.setAttribute(name, x);
+  }
+
+  function attrFunctionNS() {
+    var x = value.apply(this, arguments);
+    if (x == null) this.removeAttributeNS(name.space, name.local);
+    else this.setAttributeNS(name.space, name.local, x);
+  }
+
+  return this.each(value == null
+      ? (name.local ? attrNullNS : attrNull) : (typeof value === "function"
+      ? (name.local ? attrFunctionNS : attrFunction)
+      : (name.local ? attrConstantNS : attrConstant)));
+};
+d3_selectionPrototype.classed = function(name, value) {
+  var names = name.split(d3_selection_classedWhitespace),
+      n = names.length,
+      i = -1;
+  if (arguments.length > 1) {
+    while (++i < n) d3_selection_classed.call(this, names[i], value);
+    return this;
+  } else {
+    while (++i < n) if (!d3_selection_classed.call(this, names[i])) return false;
+    return true;
+  }
+};
+
+var d3_selection_classedWhitespace = /\s+/g;
+
+function d3_selection_classed(name, value) {
+  var re = new RegExp("(^|\\s+)" + d3.requote(name) + "(\\s+|$)", "g");
+
+  // If no value is specified, return the first value.
+  if (arguments.length < 2) {
+    var node = this.node();
+    if (c = node.classList) return c.contains(name);
+    var c = node.className;
+    re.lastIndex = 0;
+    return re.test(c.baseVal != null ? c.baseVal : c);
+  }
+
+  function classedAdd() {
+    if (c = this.classList) return c.add(name);
+    var c = this.className,
+        cb = c.baseVal != null,
+        cv = cb ? c.baseVal : c;
+    re.lastIndex = 0;
+    if (!re.test(cv)) {
+      cv = d3_collapse(cv + " " + name);
+      if (cb) c.baseVal = cv;
+      else this.className = cv;
+    }
+  }
+
+  function classedRemove() {
+    if (c = this.classList) return c.remove(name);
+    var c = this.className,
+        cb = c.baseVal != null,
+        cv = cb ? c.baseVal : c;
+    cv = d3_collapse(cv.replace(re, " "));
+    if (cb) c.baseVal = cv;
+    else this.className = cv;
+  }
+
+  function classedFunction() {
+    (value.apply(this, arguments)
+        ? classedAdd
+        : classedRemove).call(this);
+  }
+
+  return this.each(typeof value === "function"
+      ? classedFunction : value
+      ? classedAdd
+      : classedRemove);
+}
+d3_selectionPrototype.style = function(name, value, priority) {
+  if (arguments.length < 3) priority = "";
+
+  // If no value is specified, return the first value.
+  if (arguments.length < 2) return window
+      .getComputedStyle(this.node(), null)
+      .getPropertyValue(name);
+
+  function styleNull() {
+    this.style.removeProperty(name);
+  }
+
+  function styleConstant() {
+    this.style.setProperty(name, value, priority);
+  }
+
+  function styleFunction() {
+    var x = value.apply(this, arguments);
+    if (x == null) this.style.removeProperty(name);
+    else this.style.setProperty(name, x, priority);
+  }
+
+  return this.each(value == null
+      ? styleNull : (typeof value === "function"
+      ? styleFunction : styleConstant));
+};
+d3_selectionPrototype.property = function(name, value) {
+
+  // If no value is specified, return the first value.
+  if (arguments.length < 2) return this.node()[name];
+
+  function propertyNull() {
+    delete this[name];
+  }
+
+  function propertyConstant() {
+    this[name] = value;
+  }
+
+  function propertyFunction() {
+    var x = value.apply(this, arguments);
+    if (x == null) delete this[name];
+    else this[name] = x;
+  }
+
+  return this.each(value == null
+      ? propertyNull : (typeof value === "function"
+      ? propertyFunction : propertyConstant));
+};
+d3_selectionPrototype.text = function(value) {
+  return arguments.length < 1
+      ? this.node().textContent : this.each(typeof value === "function"
+      ? function() { var v = value.apply(this, arguments); this.textContent = v == null ? "" : v; } : value == null
+      ? function() { this.textContent = ""; }
+      : function() { this.textContent = value; });
+};
+d3_selectionPrototype.html = function(value) {
+  return arguments.length < 1
+      ? this.node().innerHTML : this.each(typeof value === "function"
+      ? function() { var v = value.apply(this, arguments); this.innerHTML = v == null ? "" : v; } : value == null
+      ? function() { this.innerHTML = ""; }
+      : function() { this.innerHTML = value; });
+};
+// TODO append(node)?
+// TODO append(function)?
+d3_selectionPrototype.append = function(name) {
+  name = d3.ns.qualify(name);
+
+  function append() {
+    return this.appendChild(document.createElementNS(this.namespaceURI, name));
+  }
+
+  function appendNS() {
+    return this.appendChild(document.createElementNS(name.space, name.local));
+  }
+
+  return this.select(name.local ? appendNS : append);
+};
+// TODO insert(node, function)?
+// TODO insert(function, string)?
+// TODO insert(function, function)?
+d3_selectionPrototype.insert = function(name, before) {
+  name = d3.ns.qualify(name);
+
+  function insert() {
+    return this.insertBefore(
+        document.createElementNS(this.namespaceURI, name),
+        d3_select(before, this));
+  }
+
+  function insertNS() {
+    return this.insertBefore(
+        document.createElementNS(name.space, name.local),
+        d3_select(before, this));
+  }
+
+  return this.select(name.local ? insertNS : insert);
+};
+// TODO remove(selector)?
+// TODO remove(node)?
+// TODO remove(function)?
+d3_selectionPrototype.remove = function() {
+  return this.each(function() {
+    var parent = this.parentNode;
+    if (parent) parent.removeChild(this);
+  });
+};
+// TODO data(null) for clearing data?
+d3_selectionPrototype.data = function(data, join) {
+  var enter = [],
+      update = [],
+      exit = [];
+
+  function bind(group, groupData) {
+    var i,
+        n = group.length,
+        m = groupData.length,
+        n0 = Math.min(n, m),
+        n1 = Math.max(n, m),
+        updateNodes = [],
+        enterNodes = [],
+        exitNodes = [],
+        node,
+        nodeData;
+
+    if (join) {
+      var nodeByKey = {},
+          keys = [],
+          key,
+          j = groupData.length;
+
+      for (i = -1; ++i < n;) {
+        key = join.call(node = group[i], node.__data__, i);
+        if (key in nodeByKey) {
+          exitNodes[j++] = node; // duplicate key
+        } else {
+          nodeByKey[key] = node;
+        }
+        keys.push(key);
+      }
+
+      for (i = -1; ++i < m;) {
+        node = nodeByKey[key = join.call(groupData, nodeData = groupData[i], i)];
+        if (node) {
+          node.__data__ = nodeData;
+          updateNodes[i] = node;
+          enterNodes[i] = exitNodes[i] = null;
+        } else {
+          enterNodes[i] = d3_selection_dataNode(nodeData);
+          updateNodes[i] = exitNodes[i] = null;
+        }
+        delete nodeByKey[key];
+      }
+
+      for (i = -1; ++i < n;) {
+        if (keys[i] in nodeByKey) {
+          exitNodes[i] = group[i];
+        }
+      }
+    } else {
+      for (i = -1; ++i < n0;) {
+        node = group[i];
+        nodeData = groupData[i];
+        if (node) {
+          node.__data__ = nodeData;
+          updateNodes[i] = node;
+          enterNodes[i] = exitNodes[i] = null;
+        } else {
+          enterNodes[i] = d3_selection_dataNode(nodeData);
+          updateNodes[i] = exitNodes[i] = null;
+        }
+      }
+      for (; i < m; ++i) {
+        enterNodes[i] = d3_selection_dataNode(groupData[i]);
+        updateNodes[i] = exitNodes[i] = null;
+      }
+      for (; i < n1; ++i) {
+        exitNodes[i] = group[i];
+        enterNodes[i] = updateNodes[i] = null;
+      }
+    }
+
+    enterNodes.update
+        = updateNodes;
+
+    enterNodes.parentNode
+        = updateNodes.parentNode
+        = exitNodes.parentNode
+        = group.parentNode;
+
+    enter.push(enterNodes);
+    update.push(updateNodes);
+    exit.push(exitNodes);
+  }
+
+  var i = -1,
+      n = this.length,
+      group;
+  if (typeof data === "function") {
+    while (++i < n) {
+      bind(group = this[i], data.call(group, group.parentNode.__data__, i));
+    }
+  } else {
+    while (++i < n) {
+      bind(group = this[i], data);
+    }
+  }
+
+  var selection = d3_selection(update);
+  selection.enter = function() { return d3_selection_enter(enter); };
+  selection.exit = function() { return d3_selection(exit); };
+  return selection;
+};
+
+function d3_selection_dataNode(data) {
+  return {__data__: data};
+}
+d3_selectionPrototype.filter = function(filter) {
+  var subgroups = [],
+      subgroup,
+      group,
+      node;
+
+  if (typeof filter !== "function") filter = d3_selection_filter(filter);
+
+  for (var j = 0, m = this.length; j < m; j++) {
+    subgroups.push(subgroup = []);
+    subgroup.parentNode = (group = this[j]).parentNode;
+    for (var i = 0, n = group.length; i < n; i++) {
+      if ((node = group[i]) && filter.call(node, node.__data__, i)) {
+        subgroup.push(node);
+      }
+    }
+  }
+
+  return d3_selection(subgroups);
+};
+
+function d3_selection_filter(selector) {
+  return function() {
+    return d3_selectMatches(this, selector);
+  };
+}
+d3_selectionPrototype.map = function(map) {
+  return this.each(function() {
+    this.__data__ = map.apply(this, arguments);
+  });
+};
+d3_selectionPrototype.order = function() {
+  for (var j = -1, m = this.length; ++j < m;) {
+    for (var group = this[j], i = group.length - 1, next = group[i], node; --i >= 0;) {
+      if (node = group[i]) {
+        if (next && next !== node.nextSibling) next.parentNode.insertBefore(node, next);
+        next = node;
+      }
+    }
+  }
+  return this;
+};
+d3_selectionPrototype.sort = function(comparator) {
+  comparator = d3_selection_sortComparator.apply(this, arguments);
+  for (var j = -1, m = this.length; ++j < m;) this[j].sort(comparator);
+  return this.order();
+};
+
+function d3_selection_sortComparator(comparator) {
+  if (!arguments.length) comparator = d3.ascending;
+  return function(a, b) {
+    return comparator(a && a.__data__, b && b.__data__);
+  };
+}
+// type can be namespaced, e.g., "click.foo"
+// listener can be null for removal
+d3_selectionPrototype.on = function(type, listener, capture) {
+  if (arguments.length < 3) capture = false;
+
+  // parse the type specifier
+  var name = "__on" + type, i = type.indexOf(".");
+  if (i > 0) type = type.substring(0, i);
+
+  // if called with only one argument, return the current listener
+  if (arguments.length < 2) return (i = this.node()[name]) && i._;
+
+  // remove the old event listener, and add the new event listener
+  return this.each(function(d, i) {
+    var node = this;
+
+    if (node[name]) node.removeEventListener(type, node[name], capture);
+    if (listener) node.addEventListener(type, node[name] = l, capture);
+
+    // wrapped event listener that preserves i
+    function l(e) {
+      var o = d3.event; // Events can be reentrant (e.g., focus).
+      d3.event = e;
+      try {
+        listener.call(node, node.__data__, i);
+      } finally {
+        d3.event = o;
+      }
+    }
+
+    // stash the unwrapped listener for retrieval
+    l._ = listener;
+  });
+};
+d3_selectionPrototype.each = function(callback) {
+  for (var j = -1, m = this.length; ++j < m;) {
+    for (var group = this[j], i = -1, n = group.length; ++i < n;) {
+      var node = group[i];
+      if (node) callback.call(node, node.__data__, i, j);
+    }
+  }
+  return this;
+};
+//
+// Note: assigning to the arguments array simultaneously changes the value of
+// the corresponding argument!
+//
+// TODO The `this` argument probably shouldn't be the first argument to the
+// callback, anyway, since it's redundant. However, that will require a major
+// version bump due to backwards compatibility, so I'm not changing it right
+// away.
+//
+d3_selectionPrototype.call = function(callback) {
+  callback.apply(this, (arguments[0] = this, arguments));
+  return this;
+};
+d3_selectionPrototype.empty = function() {
+  return !this.node();
+};
+d3_selectionPrototype.node = function(callback) {
+  for (var j = 0, m = this.length; j < m; j++) {
+    for (var group = this[j], i = 0, n = group.length; i < n; i++) {
+      var node = group[i];
+      if (node) return node;
+    }
+  }
+  return null;
+};
+d3_selectionPrototype.transition = function() {
+  var subgroups = [],
+      subgroup,
+      node;
+
+  for (var j = -1, m = this.length; ++j < m;) {
+    subgroups.push(subgroup = []);
+    for (var group = this[j], i = -1, n = group.length; ++i < n;) {
+      subgroup.push((node = group[i]) ? {node: node, delay: 0, duration: 250} : null);
+    }
+  }
+
+  return d3_transition(subgroups, d3_transitionInheritId || ++d3_transitionId, Date.now());
+};
+var d3_selectionRoot = d3_selection([[document]]);
+
+d3_selectionRoot[0].parentNode = d3_selectRoot;
+
+// TODO fast singleton implementation!
+// TODO select(function)
+d3.select = function(selector) {
+  return typeof selector === "string"
+      ? d3_selectionRoot.select(selector)
+      : d3_selection([[selector]]); // assume node
+};
+
+// TODO selectAll(function)
+d3.selectAll = function(selector) {
+  return typeof selector === "string"
+      ? d3_selectionRoot.selectAll(selector)
+      : d3_selection([d3_array(selector)]); // assume node[]
+};
+function d3_selection_enter(selection) {
+  d3_arraySubclass(selection, d3_selection_enterPrototype);
+  return selection;
+}
+
+var d3_selection_enterPrototype = [];
+
+d3_selection_enterPrototype.append = d3_selectionPrototype.append;
+d3_selection_enterPrototype.insert = d3_selectionPrototype.insert;
+d3_selection_enterPrototype.empty = d3_selectionPrototype.empty;
+d3_selection_enterPrototype.node = d3_selectionPrototype.node;
+d3_selection_enterPrototype.select = function(selector) {
+  var subgroups = [],
+      subgroup,
+      subnode,
+      upgroup,
+      group,
+      node;
+
+  for (var j = -1, m = this.length; ++j < m;) {
+    upgroup = (group = this[j]).update;
+    subgroups.push(subgroup = []);
+    subgroup.parentNode = group.parentNode;
+    for (var i = -1, n = group.length; ++i < n;) {
+      if (node = group[i]) {
+        subgroup.push(upgroup[i] = subnode = selector.call(group.parentNode, node.__data__, i));
+        subnode.__data__ = node.__data__;
+      } else {
+        subgroup.push(null);
+      }
+    }
+  }
+
+  return d3_selection(subgroups);
+};
+function d3_transition(groups, id, time) {
+  d3_arraySubclass(groups, d3_transitionPrototype);
+
+  var tweens = {},
+      event = d3.dispatch("start", "end"),
+      ease = d3_transitionEase;
+
+  groups.id = id;
+
+  groups.time = time;
+
+  groups.tween = function(name, tween) {
+    if (arguments.length < 2) return tweens[name];
+    if (tween == null) delete tweens[name];
+    else tweens[name] = tween;
+    return groups;
+  };
+
+  groups.ease = function(value) {
+    if (!arguments.length) return ease;
+    ease = typeof value === "function" ? value : d3.ease.apply(d3, arguments);
+    return groups;
+  };
+
+  groups.each = function(type, listener) {
+    if (arguments.length < 2) return d3_transition_each.call(groups, type);
+    event.on(type, listener);
+    return groups;
+  };
+
+  d3.timer(function(elapsed) {
+    groups.each(function(d, i, j) {
+      var tweened = [],
+          node = this,
+          delay = groups[j][i].delay,
+          duration = groups[j][i].duration,
+          lock = node.__transition__ || (node.__transition__ = {active: 0, count: 0});
+
+      ++lock.count;
+
+      delay <= elapsed ? start(elapsed) : d3.timer(start, delay, time);
+
+      function start(elapsed) {
+        if (lock.active > id) return stop();
+        lock.active = id;
+
+        for (var tween in tweens) {
+          if (tween = tweens[tween].call(node, d, i)) {
+            tweened.push(tween);
+          }
+        }
+
+        event.start.call(node, d, i);
+        if (!tick(elapsed)) d3.timer(tick, 0, time);
+        return 1;
+      }
+
+      function tick(elapsed) {
+        if (lock.active !== id) return stop();
+
+        var t = (elapsed - delay) / duration,
+            e = ease(t),
+            n = tweened.length;
+
+        while (n > 0) {
+          tweened[--n].call(node, e);
+        }
+
+        if (t >= 1) {
+          stop();
+          d3_transitionInheritId = id;
+          event.end.call(node, d, i);
+          d3_transitionInheritId = 0;
+          return 1;
+        }
+      }
+
+      function stop() {
+        if (!--lock.count) delete node.__transition__;
+        return 1;
+      }
+    });
+    return 1;
+  }, 0, time);
+
+  return groups;
+}
+
+var d3_transitionRemove = {};
+
+function d3_transitionNull(d, i, a) {
+  return a != "" && d3_transitionRemove;
+}
+
+function d3_transitionTween(name, b) {
+  var interpolate = d3_interpolateByName(name);
+
+  function transitionFunction(d, i, a) {
+    var v = b.call(this, d, i);
+    return v == null
+        ? a != "" && d3_transitionRemove
+        : a != v && interpolate(a, v);
+  }
+
+  function transitionString(d, i, a) {
+    return a != b && interpolate(a, b);
+  }
+
+  return typeof b === "function" ? transitionFunction
+      : b == null ? d3_transitionNull
+      : (b += "", transitionString);
+}
+
+var d3_transitionPrototype = [],
+    d3_transitionId = 0,
+    d3_transitionInheritId = 0,
+    d3_transitionEase = d3.ease("cubic-in-out");
+
+d3_transitionPrototype.call = d3_selectionPrototype.call;
+
+d3.transition = function() {
+  return d3_selectionRoot.transition();
+};
+
+d3.transition.prototype = d3_transitionPrototype;
+d3_transitionPrototype.select = function(selector) {
+  var subgroups = [],
+      subgroup,
+      subnode,
+      node;
+
+  if (typeof selector !== "function") selector = d3_selection_selector(selector);
+
+  for (var j = -1, m = this.length; ++j < m;) {
+    subgroups.push(subgroup = []);
+    for (var group = this[j], i = -1, n = group.length; ++i < n;) {
+      if ((node = group[i]) && (subnode = selector.call(node.node, node.node.__data__, i))) {
+        if ("__data__" in node.node) subnode.__data__ = node.node.__data__;
+        subgroup.push({node: subnode, delay: node.delay, duration: node.duration});
+      } else {
+        subgroup.push(null);
+      }
+    }
+  }
+
+  return d3_transition(subgroups, this.id, this.time).ease(this.ease());
+};
+d3_transitionPrototype.selectAll = function(selector) {
+  var subgroups = [],
+      subgroup,
+      subnodes,
+      node;
+
+  if (typeof selector !== "function") selector = d3_selection_selectorAll(selector);
+
+  for (var j = -1, m = this.length; ++j < m;) {
+    for (var group = this[j], i = -1, n = group.length; ++i < n;) {
+      if (node = group[i]) {
+        subnodes = selector.call(node.node, node.node.__data__, i);
+        subgroups.push(subgroup = []);
+        for (var k = -1, o = subnodes.length; ++k < o;) {
+          subgroup.push({node: subnodes[k], delay: node.delay, duration: node.duration});
+        }
+      }
+    }
+  }
+
+  return d3_transition(subgroups, this.id, this.time).ease(this.ease());
+};
+d3_transitionPrototype.attr = function(name, value) {
+  return this.attrTween(name, d3_transitionTween(name, value));
+};
+
+d3_transitionPrototype.attrTween = function(nameNS, tween) {
+  var name = d3.ns.qualify(nameNS);
+
+  function attrTween(d, i) {
+    var f = tween.call(this, d, i, this.getAttribute(name));
+    return f === d3_transitionRemove
+        ? (this.removeAttribute(name), null)
+        : f && function(t) { this.setAttribute(name, f(t)); };
+  }
+
+  function attrTweenNS(d, i) {
+    var f = tween.call(this, d, i, this.getAttributeNS(name.space, name.local));
+    return f === d3_transitionRemove
+        ? (this.removeAttributeNS(name.space, name.local), null)
+        : f && function(t) { this.setAttributeNS(name.space, name.local, f(t)); };
+  }
+
+  return this.tween("attr." + nameNS, name.local ? attrTweenNS : attrTween);
+};
+d3_transitionPrototype.style = function(name, value, priority) {
+  if (arguments.length < 3) priority = "";
+  return this.styleTween(name, d3_transitionTween(name, value), priority);
+};
+
+d3_transitionPrototype.styleTween = function(name, tween, priority) {
+  if (arguments.length < 3) priority = "";
+  return this.tween("style." + name, function(d, i) {
+    var f = tween.call(this, d, i, window.getComputedStyle(this, null).getPropertyValue(name));
+    return f === d3_transitionRemove
+        ? (this.style.removeProperty(name), null)
+        : f && function(t) { this.style.setProperty(name, f(t), priority); };
+  });
+};
+d3_transitionPrototype.text = function(value) {
+  return this.tween("text", function(d, i) {
+    this.textContent = typeof value === "function"
+        ? value.call(this, d, i)
+        : value;
+  });
+};
+d3_transitionPrototype.remove = function() {
+  return this.each("end.transition", function() {
+    var p;
+    if (!this.__transition__ && (p = this.parentNode)) p.removeChild(this);
+  });
+};
+d3_transitionPrototype.delay = function(value) {
+  var groups = this;
+  return groups.each(typeof value === "function"
+      ? function(d, i, j) { groups[j][i].delay = +value.apply(this, arguments); }
+      : (value = +value, function(d, i, j) { groups[j][i].delay = value; }));
+};
+d3_transitionPrototype.duration = function(value) {
+  var groups = this;
+  return groups.each(typeof value === "function"
+      ? function(d, i, j) { groups[j][i].duration = +value.apply(this, arguments); }
+      : (value = +value, function(d, i, j) { groups[j][i].duration = value; }));
+};
+function d3_transition_each(callback) {
+  for (var j = 0, m = this.length; j < m; j++) {
+    for (var group = this[j], i = 0, n = group.length; i < n; i++) {
+      var node = group[i];
+      if (node) callback.call(node = node.node, node.__data__, i, j);
+    }
+  }
+  return this;
+}
+d3_transitionPrototype.transition = function() {
+  return this.select(d3_this);
+};
+var d3_timer_queue = null,
+    d3_timer_interval, // is an interval (or frame) active?
+    d3_timer_timeout; // is a timeout active?
+
+// The timer will continue to fire until callback returns true.
+d3.timer = function(callback, delay, then) {
+  var found = false,
+      t0,
+      t1 = d3_timer_queue;
+
+  if (arguments.length < 3) {
+    if (arguments.length < 2) delay = 0;
+    else if (!isFinite(delay)) return;
+    then = Date.now();
+  }
+
+  // See if the callback's already in the queue.
+  while (t1) {
+    if (t1.callback === callback) {
+      t1.then = then;
+      t1.delay = delay;
+      found = true;
+      break;
+    }
+    t0 = t1;
+    t1 = t1.next;
+  }
+
+  // Otherwise, add the callback to the queue.
+  if (!found) d3_timer_queue = {
+    callback: callback,
+    then: then,
+    delay: delay,
+    next: d3_timer_queue
+  };
+
+  // Start animatin'!
+  if (!d3_timer_interval) {
+    d3_timer_timeout = clearTimeout(d3_timer_timeout);
+    d3_timer_interval = 1;
+    d3_timer_frame(d3_timer_step);
+  }
+}
+
+function d3_timer_step() {
+  var elapsed,
+      now = Date.now(),
+      t1 = d3_timer_queue;
+
+  while (t1) {
+    elapsed = now - t1.then;
+    if (elapsed >= t1.delay) t1.flush = t1.callback(elapsed);
+    t1 = t1.next;
+  }
+
+  var delay = d3_timer_flush() - now;
+  if (delay > 24) {
+    if (isFinite(delay)) {
+      clearTimeout(d3_timer_timeout);
+      d3_timer_timeout = setTimeout(d3_timer_step, delay);
+    }
+    d3_timer_interval = 0;
+  } else {
+    d3_timer_interval = 1;
+    d3_timer_frame(d3_timer_step);
+  }
+}
+
+d3.timer.flush = function() {
+  var elapsed,
+      now = Date.now(),
+      t1 = d3_timer_queue;
+
+  while (t1) {
+    elapsed = now - t1.then;
+    if (!t1.delay) t1.flush = t1.callback(elapsed);
+    t1 = t1.next;
+  }
+
+  d3_timer_flush();
+};
+
+// Flush after callbacks, to avoid concurrent queue modification.
+function d3_timer_flush() {
+  var t0 = null,
+      t1 = d3_timer_queue,
+      then = Infinity;
+  while (t1) {
+    if (t1.flush) {
+      t1 = t0 ? t0.next = t1.next : d3_timer_queue = t1.next;
+    } else {
+      then = Math.min(then, t1.then + t1.delay);
+      t1 = (t0 = t1).next;
+    }
+  }
+  return then;
+}
+
+var d3_timer_frame = window.requestAnimationFrame
+    || window.webkitRequestAnimationFrame
+    || window.mozRequestAnimationFrame
+    || window.oRequestAnimationFrame
+    || window.msRequestAnimationFrame
+    || function(callback) { setTimeout(callback, 17); };
+d3.transform = function(string) {
+  var g = document.createElementNS(d3.ns.prefix.svg, "g"),
+      identity = {a: 1, b: 0, c: 0, d: 1, e: 0, f: 0};
+  return (d3.transform = function(string) {
+    g.setAttribute("transform", string);
+    var t = g.transform.baseVal.consolidate();
+    return new d3_transform(t ? t.matrix : identity);
+  })(string);
+};
+
+// Compute x-scale and normalize the first row.
+// Compute shear and make second row orthogonal to first.
+// Compute y-scale and normalize the second row.
+// Finally, compute the rotation.
+function d3_transform(m) {
+  var r0 = [m.a, m.b],
+      r1 = [m.c, m.d],
+      kx = d3_transformNormalize(r0),
+      kz = d3_transformDot(r0, r1),
+      ky = d3_transformNormalize(d3_transformCombine(r1, r0, -kz)) || 0;
+  if (r0[0] * r1[1] < r1[0] * r0[1]) {
+    r0[0] *= -1;
+    r0[1] *= -1;
+    kx *= -1;
+    kz *= -1;
+  }
+  this.rotate = (kx ? Math.atan2(r0[1], r0[0]) : Math.atan2(-r1[0], r1[1])) * d3_transformDegrees;
+  this.translate = [m.e, m.f];
+  this.scale = [kx, ky];
+  this.skew = ky ? Math.atan2(kz, ky) * d3_transformDegrees : 0;
+};
+
+d3_transform.prototype.toString = function() {
+  return "translate(" + this.translate
+      + ")rotate(" + this.rotate
+      + ")skewX(" + this.skew
+      + ")scale(" + this.scale
+      + ")";
+};
+
+function d3_transformDot(a, b) {
+  return a[0] * b[0] + a[1] * b[1];
+}
+
+function d3_transformNormalize(a) {
+  var k = Math.sqrt(d3_transformDot(a, a));
+  if (k) {
+    a[0] /= k;
+    a[1] /= k;
+  }
+  return k;
+}
+
+function d3_transformCombine(a, b, k) {
+  a[0] += k * b[0];
+  a[1] += k * b[1];
+  return a;
+}
+
+var d3_transformDegrees = 180 / Math.PI;
+function d3_noop() {}
+d3.scale = {};
+
+function d3_scaleExtent(domain) {
+  var start = domain[0], stop = domain[domain.length - 1];
+  return start < stop ? [start, stop] : [stop, start];
+}
+
+function d3_scaleRange(scale) {
+  return scale.rangeExtent ? scale.rangeExtent() : d3_scaleExtent(scale.range());
+}
+function d3_scale_nice(domain, nice) {
+  var i0 = 0,
+      i1 = domain.length - 1,
+      x0 = domain[i0],
+      x1 = domain[i1],
+      dx;
+
+  if (x1 < x0) {
+    dx = i0; i0 = i1; i1 = dx;
+    dx = x0; x0 = x1; x1 = dx;
+  }
+
+  if (dx = x1 - x0) {
+    nice = nice(dx);
+    domain[i0] = nice.floor(x0);
+    domain[i1] = nice.ceil(x1);
+  }
+
+  return domain;
+}
+
+function d3_scale_niceDefault() {
+  return Math;
+}
+d3.scale.linear = function() {
+  return d3_scale_linear([0, 1], [0, 1], d3.interpolate, false);
+};
+
+function d3_scale_linear(domain, range, interpolate, clamp) {
+  var output,
+      input;
+
+  function rescale() {
+    var linear = domain.length == 2 ? d3_scale_bilinear : d3_scale_polylinear,
+        uninterpolate = clamp ? d3_uninterpolateClamp : d3_uninterpolateNumber;
+    output = linear(domain, range, uninterpolate, interpolate);
+    input = linear(range, domain, uninterpolate, d3.interpolate);
+    return scale;
+  }
+
+  function scale(x) {
+    return output(x);
+  }
+
+  // Note: requires range is coercible to number!
+  scale.invert = function(y) {
+    return input(y);
+  };
+
+  scale.domain = function(x) {
+    if (!arguments.length) return domain;
+    domain = x.map(Number);
+    return rescale();
+  };
+
+  scale.range = function(x) {
+    if (!arguments.length) return range;
+    range = x;
+    return rescale();
+  };
+
+  scale.rangeRound = function(x) {
+    return scale.range(x).interpolate(d3.interpolateRound);
+  };
+
+  scale.clamp = function(x) {
+    if (!arguments.length) return clamp;
+    clamp = x;
+    return rescale();
+  };
+
+  scale.interpolate = function(x) {
+    if (!arguments.length) return interpolate;
+    interpolate = x;
+    return rescale();
+  };
+
+  scale.ticks = function(m) {
+    return d3_scale_linearTicks(domain, m);
+  };
+
+  scale.tickFormat = function(m) {
+    return d3_scale_linearTickFormat(domain, m);
+  };
+
+  scale.nice = function() {
+    d3_scale_nice(domain, d3_scale_linearNice);
+    return rescale();
+  };
+
+  scale.copy = function() {
+    return d3_scale_linear(domain, range, interpolate, clamp);
+  };
+
+  return rescale();
+};
+
+function d3_scale_linearRebind(scale, linear) {
+  return d3.rebind(scale, linear, "range", "rangeRound", "interpolate", "clamp");
+}
+
+function d3_scale_linearNice(dx) {
+  dx = Math.pow(10, Math.round(Math.log(dx) / Math.LN10) - 1);
+  return {
+    floor: function(x) { return Math.floor(x / dx) * dx; },
+    ceil: function(x) { return Math.ceil(x / dx) * dx; }
+  };
+}
+
+function d3_scale_linearTickRange(domain, m) {
+  var extent = d3_scaleExtent(domain),
+      span = extent[1] - extent[0],
+      step = Math.pow(10, Math.floor(Math.log(span / m) / Math.LN10)),
+      err = m / span * step;
+
+  // Filter ticks to get closer to the desired count.
+  if (err <= .15) step *= 10;
+  else if (err <= .35) step *= 5;
+  else if (err <= .75) step *= 2;
+
+  // Round start and stop values to step interval.
+  extent[0] = Math.ceil(extent[0] / step) * step;
+  extent[1] = Math.floor(extent[1] / step) * step + step * .5; // inclusive
+  extent[2] = step;
+  return extent;
+}
+
+function d3_scale_linearTicks(domain, m) {
+  return d3.range.apply(d3, d3_scale_linearTickRange(domain, m));
+}
+
+function d3_scale_linearTickFormat(domain, m) {
+  return d3.format(",." + Math.max(0, -Math.floor(Math.log(d3_scale_linearTickRange(domain, m)[2]) / Math.LN10 + .01)) + "f");
+}
+function d3_scale_bilinear(domain, range, uninterpolate, interpolate) {
+  var u = uninterpolate(domain[0], domain[1]),
+      i = interpolate(range[0], range[1]);
+  return function(x) {
+    return i(u(x));
+  };
+}
+function d3_scale_polylinear(domain, range, uninterpolate, interpolate) {
+  var u = [],
+      i = [],
+      j = 0,
+      k = domain.length - 1;
+
+  // Handle descending domains.
+  if (domain[k] < domain[0]) {
+    domain = domain.slice().reverse();
+    range = range.slice().reverse();
+  }
+
+  while (++j <= k) {
+    u.push(uninterpolate(domain[j - 1], domain[j]));
+    i.push(interpolate(range[j - 1], range[j]));
+  }
+
+  return function(x) {
+    var j = d3.bisect(domain, x, 1, k) - 1;
+    return i[j](u[j](x));
+  };
+}
+d3.scale.log = function() {
+  return d3_scale_log(d3.scale.linear(), d3_scale_logp);
+};
+
+function d3_scale_log(linear, log) {
+  var pow = log.pow;
+
+  function scale(x) {
+    return linear(log(x));
+  }
+
+  scale.invert = function(x) {
+    return pow(linear.invert(x));
+  };
+
+  scale.domain = function(x) {
+    if (!arguments.length) return linear.domain().map(pow);
+    log = x[0] < 0 ? d3_scale_logn : d3_scale_logp;
+    pow = log.pow;
+    linear.domain(x.map(log));
+    return scale;
+  };
+
+  scale.nice = function() {
+    linear.domain(d3_scale_nice(linear.domain(), d3_scale_niceDefault));
+    return scale;
+  };
+
+  scale.ticks = function() {
+    var extent = d3_scaleExtent(linear.domain()),
+        ticks = [];
+    if (extent.every(isFinite)) {
+      var i = Math.floor(extent[0]),
+          j = Math.ceil(extent[1]),
+          u = pow(extent[0]),
+          v = pow(extent[1]);
+      if (log === d3_scale_logn) {
+        ticks.push(pow(i));
+        for (; i++ < j;) for (var k = 9; k > 0; k--) ticks.push(pow(i) * k);
+      } else {
+        for (; i < j; i++) for (var k = 1; k < 10; k++) ticks.push(pow(i) * k);
+        ticks.push(pow(i));
+      }
+      for (i = 0; ticks[i] < u; i++) {} // strip small values
+      for (j = ticks.length; ticks[j - 1] > v; j--) {} // strip big values
+      ticks = ticks.slice(i, j);
+    }
+    return ticks;
+  };
+
+  scale.tickFormat = function(n, format) {
+    if (arguments.length < 2) format = d3_scale_logFormat;
+    if (arguments.length < 1) return format;
+    var k = n / scale.ticks().length,
+        f = log === d3_scale_logn ? (e = -1e-12, Math.floor) : (e = 1e-12, Math.ceil),
+        e;
+    return function(d) {
+      return d / pow(f(log(d) + e)) < k ? format(d) : "";
+    };
+  };
+
+  scale.copy = function() {
+    return d3_scale_log(linear.copy(), log);
+  };
+
+  return d3_scale_linearRebind(scale, linear);
+};
+
+var d3_scale_logFormat = d3.format(".0e");
+
+function d3_scale_logp(x) {
+  return Math.log(x < 0 ? 0 : x) / Math.LN10;
+}
+
+function d3_scale_logn(x) {
+  return -Math.log(x > 0 ? 0 : -x) / Math.LN10;
+}
+
+d3_scale_logp.pow = function(x) {
+  return Math.pow(10, x);
+};
+
+d3_scale_logn.pow = function(x) {
+  return -Math.pow(10, -x);
+};
+d3.scale.pow = function() {
+  return d3_scale_pow(d3.scale.linear(), 1);
+};
+
+function d3_scale_pow(linear, exponent) {
+  var powp = d3_scale_powPow(exponent),
+      powb = d3_scale_powPow(1 / exponent);
+
+  function scale(x) {
+    return linear(powp(x));
+  }
+
+  scale.invert = function(x) {
+    return powb(linear.invert(x));
+  };
+
+  scale.domain = function(x) {
+    if (!arguments.length) return linear.domain().map(powb);
+    linear.domain(x.map(powp));
+    return scale;
+  };
+
+  scale.ticks = function(m) {
+    return d3_scale_linearTicks(scale.domain(), m);
+  };
+
+  scale.tickFormat = function(m) {
+    return d3_scale_linearTickFormat(scale.domain(), m);
+  };
+
+  scale.nice = function() {
+    return scale.domain(d3_scale_nice(scale.domain(), d3_scale_linearNice));
+  };
+
+  scale.exponent = function(x) {
+    if (!arguments.length) return exponent;
+    var domain = scale.domain();
+    powp = d3_scale_powPow(exponent = x);
+    powb = d3_scale_powPow(1 / exponent);
+    return scale.domain(domain);
+  };
+
+  scale.copy = function() {
+    return d3_scale_pow(linear.copy(), exponent);
+  };
+
+  return d3_scale_linearRebind(scale, linear);
+};
+
+function d3_scale_powPow(e) {
+  return function(x) {
+    return x < 0 ? -Math.pow(-x, e) : Math.pow(x, e);
+  };
+}
+d3.scale.sqrt = function() {
+  return d3.scale.pow().exponent(.5);
+};
+d3.scale.ordinal = function() {
+  return d3_scale_ordinal([], {t: "range", x: []});
+};
+
+function d3_scale_ordinal(domain, ranger) {
+  var index,
+      range,
+      rangeBand;
+
+  function scale(x) {
+    return range[((index[x] || (index[x] = domain.push(x))) - 1) % range.length];
+  }
+
+  function steps(start, step) {
+    return d3.range(domain.length).map(function(i) { return start + step * i; });
+  }
+
+  scale.domain = function(x) {
+    if (!arguments.length) return domain;
+    domain = [];
+    index = {};
+    var i = -1, n = x.length, xi;
+    while (++i < n) if (!index[xi = x[i]]) index[xi] = domain.push(xi);
+    return scale[ranger.t](ranger.x, ranger.p);
+  };
+
+  scale.range = function(x) {
+    if (!arguments.length) return range;
+    range = x;
+    rangeBand = 0;
+    ranger = {t: "range", x: x};
+    return scale;
+  };
+
+  scale.rangePoints = function(x, padding) {
+    if (arguments.length < 2) padding = 0;
+    var start = x[0],
+        stop = x[1],
+        step = (stop - start) / (domain.length - 1 + padding);
+    range = steps(domain.length < 2 ? (start + stop) / 2 : start + step * padding / 2, step);
+    rangeBand = 0;
+    ranger = {t: "rangePoints", x: x, p: padding};
+    return scale;
+  };
+
+  scale.rangeBands = function(x, padding) {
+    if (arguments.length < 2) padding = 0;
+    var start = x[0],
+        stop = x[1],
+        step = (stop - start) / (domain.length + padding);
+    range = steps(start + step * padding, step);
+    rangeBand = step * (1 - padding);
+    ranger = {t: "rangeBands", x: x, p: padding};
+    return scale;
+  };
+
+  scale.rangeRoundBands = function(x, padding) {
+    if (arguments.length < 2) padding = 0;
+    var start = x[0],
+        stop = x[1],
+        step = Math.floor((stop - start) / (domain.length + padding));
+    range = steps(start + Math.round((stop - start - (domain.length - padding) * step) / 2), step);
+    rangeBand = Math.round(step * (1 - padding));
+    ranger = {t: "rangeRoundBands", x: x, p: padding};
+    return scale;
+  };
+
+  scale.rangeBand = function() {
+    return rangeBand;
+  };
+
+  scale.rangeExtent = function() {
+    return ranger.t === "range" ? d3_scaleExtent(ranger.x) : ranger.x;
+  };
+
+  scale.copy = function() {
+    return d3_scale_ordinal(domain, ranger);
+  };
+
+  return scale.domain(domain);
+};
+/*
+ * This product includes color specifications and designs developed by Cynthia
+ * Brewer (http://colorbrewer.org/). See lib/colorbrewer for more information.
+ */
+
+d3.scale.category10 = function() {
+  return d3.scale.ordinal().range(d3_category10);
+};
+
+d3.scale.category20 = function() {
+  return d3.scale.ordinal().range(d3_category20);
+};
+
+d3.scale.category20b = function() {
+  return d3.scale.ordinal().range(d3_category20b);
+};
+
+d3.scale.category20c = function() {
+  return d3.scale.ordinal().range(d3_category20c);
+};
+
+var d3_category10 = [
+  "#1f77b4", "#ff7f0e", "#2ca02c", "#d62728", "#9467bd",
+  "#8c564b", "#e377c2", "#7f7f7f", "#bcbd22", "#17becf"
+];
+
+var d3_category20 = [
+  "#1f77b4", "#aec7e8",
+  "#ff7f0e", "#ffbb78",
+  "#2ca02c", "#98df8a",
+  "#d62728", "#ff9896",
+  "#9467bd", "#c5b0d5",
+  "#8c564b", "#c49c94",
+  "#e377c2", "#f7b6d2",
+  "#7f7f7f", "#c7c7c7",
+  "#bcbd22", "#dbdb8d",
+  "#17becf", "#9edae5"
+];
+
+var d3_category20b = [
+  "#393b79", "#5254a3", "#6b6ecf", "#9c9ede",
+  "#637939", "#8ca252", "#b5cf6b", "#cedb9c",
+  "#8c6d31", "#bd9e39", "#e7ba52", "#e7cb94",
+  "#843c39", "#ad494a", "#d6616b", "#e7969c",
+  "#7b4173", "#a55194", "#ce6dbd", "#de9ed6"
+];
+
+var d3_category20c = [
+  "#3182bd", "#6baed6", "#9ecae1", "#c6dbef",
+  "#e6550d", "#fd8d3c", "#fdae6b", "#fdd0a2",
+  "#31a354", "#74c476", "#a1d99b", "#c7e9c0",
+  "#756bb1", "#9e9ac8", "#bcbddc", "#dadaeb",
+  "#636363", "#969696", "#bdbdbd", "#d9d9d9"
+];
+d3.scale.quantile = function() {
+  return d3_scale_quantile([], []);
+};
+
+function d3_scale_quantile(domain, range) {
+  var thresholds;
+
+  function rescale() {
+    var k = 0,
+        n = domain.length,
+        q = range.length;
+    thresholds = [];
+    while (++k < q) thresholds[k - 1] = d3.quantile(domain, k / q);
+    return scale;
+  }
+
+  function scale(x) {
+    if (isNaN(x = +x)) return NaN;
+    return range[d3.bisect(thresholds, x)];
+  }
+
+  scale.domain = function(x) {
+    if (!arguments.length) return domain;
+    domain = x.filter(function(d) { return !isNaN(d); }).sort(d3.ascending);
+    return rescale();
+  };
+
+  scale.range = function(x) {
+    if (!arguments.length) return range;
+    range = x;
+    return rescale();
+  };
+
+  scale.quantiles = function() {
+    return thresholds;
+  };
+
+  scale.copy = function() {
+    return d3_scale_quantile(domain, range); // copy on write!
+  };
+
+  return rescale();
+};
+d3.scale.quantize = function() {
+  return d3_scale_quantize(0, 1, [0, 1]);
+};
+
+function d3_scale_quantize(x0, x1, range) {
+  var kx, i;
+
+  function scale(x) {
+    return range[Math.max(0, Math.min(i, Math.floor(kx * (x - x0))))];
+  }
+
+  function rescale() {
+    kx = range.length / (x1 - x0);
+    i = range.length - 1;
+    return scale;
+  }
+
+  scale.domain = function(x) {
+    if (!arguments.length) return [x0, x1];
+    x0 = +x[0];
+    x1 = +x[x.length - 1];
+    return rescale();
+  };
+
+  scale.range = function(x) {
+    if (!arguments.length) return range;
+    range = x;
+    return rescale();
+  };
+
+  scale.copy = function() {
+    return d3_scale_quantize(x0, x1, range); // copy on write
+  };
+
+  return rescale();
+};
+d3.svg = {};
+d3.svg.arc = function() {
+  var innerRadius = d3_svg_arcInnerRadius,
+      outerRadius = d3_svg_arcOuterRadius,
+      startAngle = d3_svg_arcStartAngle,
+      endAngle = d3_svg_arcEndAngle;
+
+  function arc() {
+    var r0 = innerRadius.apply(this, arguments),
+        r1 = outerRadius.apply(this, arguments),
+        a0 = startAngle.apply(this, arguments) + d3_svg_arcOffset,
+        a1 = endAngle.apply(this, arguments) + d3_svg_arcOffset,
+        da = (a1 < a0 && (da = a0, a0 = a1, a1 = da), a1 - a0),
+        df = da < Math.PI ? "0" : "1",
+        c0 = Math.cos(a0),
+        s0 = Math.sin(a0),
+        c1 = Math.cos(a1),
+        s1 = Math.sin(a1);
+    return da >= d3_svg_arcMax
+      ? (r0
+      ? "M0," + r1
+      + "A" + r1 + "," + r1 + " 0 1,1 0," + (-r1)
+      + "A" + r1 + "," + r1 + " 0 1,1 0," + r1
+      + "M0," + r0
+      + "A" + r0 + "," + r0 + " 0 1,0 0," + (-r0)
+      + "A" + r0 + "," + r0 + " 0 1,0 0," + r0
+      + "Z"
+      : "M0," + r1
+      + "A" + r1 + "," + r1 + " 0 1,1 0," + (-r1)
+      + "A" + r1 + "," + r1 + " 0 1,1 0," + r1
+      + "Z")
+      : (r0
+      ? "M" + r1 * c0 + "," + r1 * s0
+      + "A" + r1 + "," + r1 + " 0 " + df + ",1 " + r1 * c1 + "," + r1 * s1
+      + "L" + r0 * c1 + "," + r0 * s1
+      + "A" + r0 + "," + r0 + " 0 " + df + ",0 " + r0 * c0 + "," + r0 * s0
+      + "Z"
+      : "M" + r1 * c0 + "," + r1 * s0
+      + "A" + r1 + "," + r1 + " 0 " + df + ",1 " + r1 * c1 + "," + r1 * s1
+      + "L0,0"
+      + "Z");
+  }
+
+  arc.innerRadius = function(v) {
+    if (!arguments.length) return innerRadius;
+    innerRadius = d3.functor(v);
+    return arc;
+  };
+
+  arc.outerRadius = function(v) {
+    if (!arguments.length) return outerRadius;
+    outerRadius = d3.functor(v);
+    return arc;
+  };
+
+  arc.startAngle = function(v) {
+    if (!arguments.length) return startAngle;
+    startAngle = d3.functor(v);
+    return arc;
+  };
+
+  arc.endAngle = function(v) {
+    if (!arguments.length) return endAngle;
+    endAngle = d3.functor(v);
+    return arc;
+  };
+
+  arc.centroid = function() {
+    var r = (innerRadius.apply(this, arguments)
+        + outerRadius.apply(this, arguments)) / 2,
+        a = (startAngle.apply(this, arguments)
+        + endAngle.apply(this, arguments)) / 2 + d3_svg_arcOffset;
+    return [Math.cos(a) * r, Math.sin(a) * r];
+  };
+
+  return arc;
+};
+
+var d3_svg_arcOffset = -Math.PI / 2,
+    d3_svg_arcMax = 2 * Math.PI - 1e-6;
+
+function d3_svg_arcInnerRadius(d) {
+  return d.innerRadius;
+}
+
+function d3_svg_arcOuterRadius(d) {
+  return d.outerRadius;
+}
+
+function d3_svg_arcStartAngle(d) {
+  return d.startAngle;
+}
+
+function d3_svg_arcEndAngle(d) {
+  return d.endAngle;
+}
+function d3_svg_line(projection) {
+  var x = d3_svg_lineX,
+      y = d3_svg_lineY,
+      interpolate = "linear",
+      interpolator = d3_svg_lineInterpolators[interpolate],
+      tension = .7;
+
+  function line(d) {
+    return d.length < 1 ? null : "M" + interpolator(projection(d3_svg_linePoints(this, d, x, y)), tension);
+  }
+
+  line.x = function(v) {
+    if (!arguments.length) return x;
+    x = v;
+    return line;
+  };
+
+  line.y = function(v) {
+    if (!arguments.length) return y;
+    y = v;
+    return line;
+  };
+
+  line.interpolate = function(v) {
+    if (!arguments.length) return interpolate;
+    interpolator = d3_svg_lineInterpolators[interpolate = v];
+    return line;
+  };
+
+  line.tension = function(v) {
+    if (!arguments.length) return tension;
+    tension = v;
+    return line;
+  };
+
+  return line;
+}
+
+d3.svg.line = function() {
+  return d3_svg_line(Object);
+};
+
+// Converts the specified array of data into an array of points
+// (x-y tuples), by evaluating the specified `x` and `y` functions on each
+// data point. The `this` context of the evaluated functions is the specified
+// "self" object; each function is passed the current datum and index.
+function d3_svg_linePoints(self, d, x, y) {
+  var points = [],
+      i = -1,
+      n = d.length,
+      fx = typeof x === "function",
+      fy = typeof y === "function",
+      value;
+  if (fx && fy) {
+    while (++i < n) points.push([
+      x.call(self, value = d[i], i),
+      y.call(self, value, i)
+    ]);
+  } else if (fx) {
+    while (++i < n) points.push([x.call(self, d[i], i), y]);
+  } else if (fy) {
+    while (++i < n) points.push([x, y.call(self, d[i], i)]);
+  } else {
+    while (++i < n) points.push([x, y]);
+  }
+  return points;
+}
+
+// The default `x` property, which references d[0].
+function d3_svg_lineX(d) {
+  return d[0];
+}
+
+// The default `y` property, which references d[1].
+function d3_svg_lineY(d) {
+  return d[1];
+}
+
+// The various interpolators supported by the `line` class.
+var d3_svg_lineInterpolators = {
+  "linear": d3_svg_lineLinear,
+  "step-before": d3_svg_lineStepBefore,
+  "step-after": d3_svg_lineStepAfter,
+  "basis": d3_svg_lineBasis,
+  "basis-open": d3_svg_lineBasisOpen,
+  "basis-closed": d3_svg_lineBasisClosed,
+  "bundle": d3_svg_lineBundle,
+  "cardinal": d3_svg_lineCardinal,
+  "cardinal-open": d3_svg_lineCardinalOpen,
+  "cardinal-closed": d3_svg_lineCardinalClosed,
+  "monotone": d3_svg_lineMonotone
+};
+
+// Linear interpolation; generates "L" commands.
+function d3_svg_lineLinear(points) {
+  var i = 0,
+      n = points.length,
+      p = points[0],
+      path = [p[0], ",", p[1]];
+  while (++i < n) path.push("L", (p = points[i])[0], ",", p[1]);
+  return path.join("");
+}
+
+// Step interpolation; generates "H" and "V" commands.
+function d3_svg_lineStepBefore(points) {
+  var i = 0,
+      n = points.length,
+      p = points[0],
+      path = [p[0], ",", p[1]];
+  while (++i < n) path.push("V", (p = points[i])[1], "H", p[0]);
+  return path.join("");
+}
+
+// Step interpolation; generates "H" and "V" commands.
+function d3_svg_lineStepAfter(points) {
+  var i = 0,
+      n = points.length,
+      p = points[0],
+      path = [p[0], ",", p[1]];
+  while (++i < n) path.push("H", (p = points[i])[0], "V", p[1]);
+  return path.join("");
+}
+
+// Open cardinal spline interpolation; generates "C" commands.
+function d3_svg_lineCardinalOpen(points, tension) {
+  return points.length < 4
+      ? d3_svg_lineLinear(points)
+      : points[1] + d3_svg_lineHermite(points.slice(1, points.length - 1),
+        d3_svg_lineCardinalTangents(points, tension));
+}
+
+// Closed cardinal spline interpolation; generates "C" commands.
+function d3_svg_lineCardinalClosed(points, tension) {
+  return points.length < 3
+      ? d3_svg_lineLinear(points)
+      : points[0] + d3_svg_lineHermite((points.push(points[0]), points),
+        d3_svg_lineCardinalTangents([points[points.length - 2]]
+        .concat(points, [points[1]]), tension));
+}
+
+// Cardinal spline interpolation; generates "C" commands.
+function d3_svg_lineCardinal(points, tension, closed) {
+  return points.length < 3
+      ? d3_svg_lineLinear(points)
+      : points[0] + d3_svg_lineHermite(points,
+        d3_svg_lineCardinalTangents(points, tension));
+}
+
+// Hermite spline construction; generates "C" commands.
+function d3_svg_lineHermite(points, tangents) {
+  if (tangents.length < 1
+      || (points.length != tangents.length
+      && points.length != tangents.length + 2)) {
+    return d3_svg_lineLinear(points);
+  }
+
+  var quad = points.length != tangents.length,
+      path = "",
+      p0 = points[0],
+      p = points[1],
+      t0 = tangents[0],
+      t = t0,
+      pi = 1;
+
+  if (quad) {
+    path += "Q" + (p[0] - t0[0] * 2 / 3) + "," + (p[1] - t0[1] * 2 / 3)
+        + "," + p[0] + "," + p[1];
+    p0 = points[1];
+    pi = 2;
+  }
+
+  if (tangents.length > 1) {
+    t = tangents[1];
+    p = points[pi];
+    pi++;
+    path += "C" + (p0[0] + t0[0]) + "," + (p0[1] + t0[1])
+        + "," + (p[0] - t[0]) + "," + (p[1] - t[1])
+        + "," + p[0] + "," + p[1];
+    for (var i = 2; i < tangents.length; i++, pi++) {
+      p = points[pi];
+      t = tangents[i];
+      path += "S" + (p[0] - t[0]) + "," + (p[1] - t[1])
+          + "," + p[0] + "," + p[1];
+    }
+  }
+
+  if (quad) {
+    var lp = points[pi];
+    path += "Q" + (p[0] + t[0] * 2 / 3) + "," + (p[1] + t[1] * 2 / 3)
+        + "," + lp[0] + "," + lp[1];
+  }
+
+  return path;
+}
+
+// Generates tangents for a cardinal spline.
+function d3_svg_lineCardinalTangents(points, tension) {
+  var tangents = [],
+      a = (1 - tension) / 2,
+      p0,
+      p1 = points[0],
+      p2 = points[1],
+      i = 1,
+      n = points.length;
+  while (++i < n) {
+    p0 = p1;
+    p1 = p2;
+    p2 = points[i];
+    tangents.push([a * (p2[0] - p0[0]), a * (p2[1] - p0[1])]);
+  }
+  return tangents;
+}
+
+// B-spline interpolation; generates "C" commands.
+function d3_svg_lineBasis(points) {
+  if (points.length < 3) return d3_svg_lineLinear(points);
+  var i = 1,
+      n = points.length,
+      pi = points[0],
+      x0 = pi[0],
+      y0 = pi[1],
+      px = [x0, x0, x0, (pi = points[1])[0]],
+      py = [y0, y0, y0, pi[1]],
+      path = [x0, ",", y0];
+  d3_svg_lineBasisBezier(path, px, py);
+  while (++i < n) {
+    pi = points[i];
+    px.shift(); px.push(pi[0]);
+    py.shift(); py.push(pi[1]);
+    d3_svg_lineBasisBezier(path, px, py);
+  }
+  i = -1;
+  while (++i < 2) {
+    px.shift(); px.push(pi[0]);
+    py.shift(); py.push(pi[1]);
+    d3_svg_lineBasisBezier(path, px, py);
+  }
+  return path.join("");
+}
+
+// Open B-spline interpolation; generates "C" commands.
+function d3_svg_lineBasisOpen(points) {
+  if (points.length < 4) return d3_svg_lineLinear(points);
+  var path = [],
+      i = -1,
+      n = points.length,
+      pi,
+      px = [0],
+      py = [0];
+  while (++i < 3) {
+    pi = points[i];
+    px.push(pi[0]);
+    py.push(pi[1]);
+  }
+  path.push(d3_svg_lineDot4(d3_svg_lineBasisBezier3, px)
+    + "," + d3_svg_lineDot4(d3_svg_lineBasisBezier3, py));
+  --i; while (++i < n) {
+    pi = points[i];
+    px.shift(); px.push(pi[0]);
+    py.shift(); py.push(pi[1]);
+    d3_svg_lineBasisBezier(path, px, py);
+  }
+  return path.join("");
+}
+
+// Closed B-spline interpolation; generates "C" commands.
+function d3_svg_lineBasisClosed(points) {
+  var path,
+      i = -1,
+      n = points.length,
+      m = n + 4,
+      pi,
+      px = [],
+      py = [];
+  while (++i < 4) {
+    pi = points[i % n];
+    px.push(pi[0]);
+    py.push(pi[1]);
+  }
+  path = [
+    d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",",
+    d3_svg_lineDot4(d3_svg_lineBasisBezier3, py)
+  ];
+  --i; while (++i < m) {
+    pi = points[i % n];
+    px.shift(); px.push(pi[0]);
+    py.shift(); py.push(pi[1]);
+    d3_svg_lineBasisBezier(path, px, py);
+  }
+  return path.join("");
+}
+
+function d3_svg_lineBundle(points, tension) {
+  var n = points.length - 1,
+      x0 = points[0][0],
+      y0 = points[0][1],
+      dx = points[n][0] - x0,
+      dy = points[n][1] - y0,
+      i = -1,
+      p,
+      t;
+  while (++i <= n) {
+    p = points[i];
+    t = i / n;
+    p[0] = tension * p[0] + (1 - tension) * (x0 + t * dx);
+    p[1] = tension * p[1] + (1 - tension) * (y0 + t * dy);
+  }
+  return d3_svg_lineBasis(points);
+}
+
+// Returns the dot product of the given four-element vectors.
+function d3_svg_lineDot4(a, b) {
+  return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
+}
+
+// Matrix to transform basis (b-spline) control points to bezier
+// control points. Derived from FvD 11.2.8.
+var d3_svg_lineBasisBezier1 = [0, 2/3, 1/3, 0],
+    d3_svg_lineBasisBezier2 = [0, 1/3, 2/3, 0],
+    d3_svg_lineBasisBezier3 = [0, 1/6, 2/3, 1/6];
+
+// Pushes a "C" Bézier curve onto the specified path array, given the
+// two specified four-element arrays which define the control points.
+function d3_svg_lineBasisBezier(path, x, y) {
+  path.push(
+      "C", d3_svg_lineDot4(d3_svg_lineBasisBezier1, x),
+      ",", d3_svg_lineDot4(d3_svg_lineBasisBezier1, y),
+      ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, x),
+      ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, y),
+      ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, x),
+      ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, y));
+}
+
+// Computes the slope from points p0 to p1.
+function d3_svg_lineSlope(p0, p1) {
+  return (p1[1] - p0[1]) / (p1[0] - p0[0]);
+}
+
+// Compute three-point differences for the given points.
+// http://en.wikipedia.org/wiki/Cubic_Hermite_spline#Finite_difference
+function d3_svg_lineFiniteDifferences(points) {
+  var i = 0,
+      j = points.length - 1,
+      m = [],
+      p0 = points[0],
+      p1 = points[1],
+      d = m[0] = d3_svg_lineSlope(p0, p1);
+  while (++i < j) {
+    m[i] = d + (d = d3_svg_lineSlope(p0 = p1, p1 = points[i + 1]));
+  }
+  m[i] = d;
+  return m;
+}
+
+// Interpolates the given points using Fritsch-Carlson Monotone cubic Hermite
+// interpolation. Returns an array of tangent vectors. For details, see
+// http://en.wikipedia.org/wiki/Monotone_cubic_interpolation
+function d3_svg_lineMonotoneTangents(points) {
+  var tangents = [],
+      d,
+      a,
+      b,
+      s,
+      m = d3_svg_lineFiniteDifferences(points),
+      i = -1,
+      j = points.length - 1;
+
+  // The first two steps are done by computing finite-differences:
+  // 1. Compute the slopes of the secant lines between successive points.
+  // 2. Initialize the tangents at every point as the average of the secants.
+
+  // Then, for each segment…
+  while (++i < j) {
+    d = d3_svg_lineSlope(points[i], points[i + 1]);
+
+    // 3. If two successive yk = y{k + 1} are equal (i.e., d is zero), then set
+    // mk = m{k + 1} = 0 as the spline connecting these points must be flat to
+    // preserve monotonicity. Ignore step 4 and 5 for those k.
+
+    if (Math.abs(d) < 1e-6) {
+      m[i] = m[i + 1] = 0;
+    } else {
+      // 4. Let ak = mk / dk and bk = m{k + 1} / dk.
+      a = m[i] / d;
+      b = m[i + 1] / d;
+
+      // 5. Prevent overshoot and ensure monotonicity by restricting the
+      // magnitude of vector <ak, bk> to a circle of radius 3.
+      s = a * a + b * b;
+      if (s > 9) {
+        s = d * 3 / Math.sqrt(s);
+        m[i] = s * a;
+        m[i + 1] = s * b;
+      }
+    }
+  }
+
+  // Compute the normalized tangent vector from the slopes. Note that if x is
+  // not monotonic, it's possible that the slope will be infinite, so we protect
+  // against NaN by setting the coordinate to zero.
+  i = -1; while (++i <= j) {
+    s = (points[Math.min(j, i + 1)][0] - points[Math.max(0, i - 1)][0])
+      / (6 * (1 + m[i] * m[i]));
+    tangents.push([s || 0, m[i] * s || 0]);
+  }
+
+  return tangents;
+}
+
+function d3_svg_lineMonotone(points) {
+  return points.length < 3
+      ? d3_svg_lineLinear(points)
+      : points[0] +
+        d3_svg_lineHermite(points, d3_svg_lineMonotoneTangents(points));
+}
+d3.svg.line.radial = function() {
+  var line = d3_svg_line(d3_svg_lineRadial);
+  line.radius = line.x, delete line.x;
+  line.angle = line.y, delete line.y;
+  return line;
+};
+
+function d3_svg_lineRadial(points) {
+  var point,
+      i = -1,
+      n = points.length,
+      r,
+      a;
+  while (++i < n) {
+    point = points[i];
+    r = point[0];
+    a = point[1] + d3_svg_arcOffset;
+    point[0] = r * Math.cos(a);
+    point[1] = r * Math.sin(a);
+  }
+  return points;
+}
+function d3_svg_area(projection) {
+  var x0 = d3_svg_lineX,
+      x1 = d3_svg_lineX,
+      y0 = 0,
+      y1 = d3_svg_lineY,
+      interpolate,
+      i0,
+      i1,
+      tension = .7;
+
+  function area(d) {
+    if (d.length < 1) return null;
+    var points0 = d3_svg_linePoints(this, d, x0, y0),
+        points1 = d3_svg_linePoints(this, d, x0 === x1 ? d3_svg_areaX(points0) : x1, y0 === y1 ? d3_svg_areaY(points0) : y1);
+    return "M" + i0(projection(points1), tension)
+         + "L" + i1(projection(points0.reverse()), tension)
+         + "Z";
+  }
+
+  area.x = function(x) {
+    if (!arguments.length) return x1;
+    x0 = x1 = x;
+    return area;
+  };
+
+  area.x0 = function(x) {
+    if (!arguments.length) return x0;
+    x0 = x;
+    return area;
+  };
+
+  area.x1 = function(x) {
+    if (!arguments.length) return x1;
+    x1 = x;
+    return area;
+  };
+
+  area.y = function(y) {
+    if (!arguments.length) return y1;
+    y0 = y1 = y;
+    return area;
+  };
+
+  area.y0 = function(y) {
+    if (!arguments.length) return y0;
+    y0 = y;
+    return area;
+  };
+
+  area.y1 = function(y) {
+    if (!arguments.length) return y1;
+    y1 = y;
+    return area;
+  };
+
+  area.interpolate = function(x) {
+    if (!arguments.length) return interpolate;
+    i0 = d3_svg_lineInterpolators[interpolate = x];
+    i1 = i0.reverse || i0;
+    return area;
+  };
+
+  area.tension = function(x) {
+    if (!arguments.length) return tension;
+    tension = x;
+    return area;
+  };
+
+  return area.interpolate("linear");
+}
+
+d3_svg_lineStepBefore.reverse = d3_svg_lineStepAfter;
+d3_svg_lineStepAfter.reverse = d3_svg_lineStepBefore;
+
+d3.svg.area = function() {
+  return d3_svg_area(Object);
+};
+
+function d3_svg_areaX(points) {
+  return function(d, i) {
+    return points[i][0];
+  };
+}
+
+function d3_svg_areaY(points) {
+  return function(d, i) {
+    return points[i][1];
+  };
+}
+d3.svg.area.radial = function() {
+  var area = d3_svg_area(d3_svg_lineRadial);
+  area.radius = area.x, delete area.x;
+  area.innerRadius = area.x0, delete area.x0;
+  area.outerRadius = area.x1, delete area.x1;
+  area.angle = area.y, delete area.y;
+  area.startAngle = area.y0, delete area.y0;
+  area.endAngle = area.y1, delete area.y1;
+  return area;
+};
+d3.svg.chord = function() {
+  var source = d3_svg_chordSource,
+      target = d3_svg_chordTarget,
+      radius = d3_svg_chordRadius,
+      startAngle = d3_svg_arcStartAngle,
+      endAngle = d3_svg_arcEndAngle;
+
+  // TODO Allow control point to be customized.
+
+  function chord(d, i) {
+    var s = subgroup(this, source, d, i),
+        t = subgroup(this, target, d, i);
+    return "M" + s.p0
+      + arc(s.r, s.p1, s.a1 - s.a0) + (equals(s, t)
+      ? curve(s.r, s.p1, s.r, s.p0)
+      : curve(s.r, s.p1, t.r, t.p0)
+      + arc(t.r, t.p1, t.a1 - t.a0)
+      + curve(t.r, t.p1, s.r, s.p0))
+      + "Z";
+  }
+
+  function subgroup(self, f, d, i) {
+    var subgroup = f.call(self, d, i),
+        r = radius.call(self, subgroup, i),
+        a0 = startAngle.call(self, subgroup, i) + d3_svg_arcOffset,
+        a1 = endAngle.call(self, subgroup, i) + d3_svg_arcOffset;
+    return {
+      r: r,
+      a0: a0,
+      a1: a1,
+      p0: [r * Math.cos(a0), r * Math.sin(a0)],
+      p1: [r * Math.cos(a1), r * Math.sin(a1)]
+    };
+  }
+
+  function equals(a, b) {
+    return a.a0 == b.a0 && a.a1 == b.a1;
+  }
+
+  function arc(r, p, a) {
+    return "A" + r + "," + r + " 0 " + +(a > Math.PI) + ",1 " + p;
+  }
+
+  function curve(r0, p0, r1, p1) {
+    return "Q 0,0 " + p1;
+  }
+
+  chord.radius = function(v) {
+    if (!arguments.length) return radius;
+    radius = d3.functor(v);
+    return chord;
+  };
+
+  chord.source = function(v) {
+    if (!arguments.length) return source;
+    source = d3.functor(v);
+    return chord;
+  };
+
+  chord.target = function(v) {
+    if (!arguments.length) return target;
+    target = d3.functor(v);
+    return chord;
+  };
+
+  chord.startAngle = function(v) {
+    if (!arguments.length) return startAngle;
+    startAngle = d3.functor(v);
+    return chord;
+  };
+
+  chord.endAngle = function(v) {
+    if (!arguments.length) return endAngle;
+    endAngle = d3.functor(v);
+    return chord;
+  };
+
+  return chord;
+};
+
+function d3_svg_chordSource(d) {
+  return d.source;
+}
+
+function d3_svg_chordTarget(d) {
+  return d.target;
+}
+
+function d3_svg_chordRadius(d) {
+  return d.radius;
+}
+
+function d3_svg_chordStartAngle(d) {
+  return d.startAngle;
+}
+
+function d3_svg_chordEndAngle(d) {
+  return d.endAngle;
+}
+d3.svg.diagonal = function() {
+  var source = d3_svg_chordSource,
+      target = d3_svg_chordTarget,
+      projection = d3_svg_diagonalProjection;
+
+  function diagonal(d, i) {
+    var p0 = source.call(this, d, i),
+        p3 = target.call(this, d, i),
+        m = (p0.y + p3.y) / 2,
+        p = [p0, {x: p0.x, y: m}, {x: p3.x, y: m}, p3];
+    p = p.map(projection);
+    return "M" + p[0] + "C" + p[1] + " " + p[2] + " " + p[3];
+  }
+
+  diagonal.source = function(x) {
+    if (!arguments.length) return source;
+    source = d3.functor(x);
+    return diagonal;
+  };
+
+  diagonal.target = function(x) {
+    if (!arguments.length) return target;
+    target = d3.functor(x);
+    return diagonal;
+  };
+
+  diagonal.projection = function(x) {
+    if (!arguments.length) return projection;
+    projection = x;
+    return diagonal;
+  };
+
+  return diagonal;
+};
+
+function d3_svg_diagonalProjection(d) {
+  return [d.x, d.y];
+}
+d3.svg.diagonal.radial = function() {
+  var diagonal = d3.svg.diagonal(),
+      projection = d3_svg_diagonalProjection,
+      projection_ = diagonal.projection;
+
+  diagonal.projection = function(x) {
+    return arguments.length
+        ? projection_(d3_svg_diagonalRadialProjection(projection = x))
+        : projection;
+  };
+
+  return diagonal;
+};
+
+function d3_svg_diagonalRadialProjection(projection) {
+  return function() {
+    var d = projection.apply(this, arguments),
+        r = d[0],
+        a = d[1] + d3_svg_arcOffset;
+    return [r * Math.cos(a), r * Math.sin(a)];
+  };
+}
+d3.svg.mouse = function(container) {
+  return d3_svg_mousePoint(container, d3.event);
+};
+
+// https://bugs.webkit.org/show_bug.cgi?id=44083
+var d3_mouse_bug44083 = /WebKit/.test(navigator.userAgent) ? -1 : 0;
+
+function d3_svg_mousePoint(container, e) {
+  var point = (container.ownerSVGElement || container).createSVGPoint();
+  if ((d3_mouse_bug44083 < 0) && (window.scrollX || window.scrollY)) {
+    var svg = d3.select(document.body)
+      .append("svg")
+        .style("position", "absolute")
+        .style("top", 0)
+        .style("left", 0);
+    var ctm = svg[0][0].getScreenCTM();
+    d3_mouse_bug44083 = !(ctm.f || ctm.e);
+    svg.remove();
+  }
+  if (d3_mouse_bug44083) {
+    point.x = e.pageX;
+    point.y = e.pageY;
+  } else {
+    point.x = e.clientX;
+    point.y = e.clientY;
+  }
+  point = point.matrixTransform(container.getScreenCTM().inverse());
+  return [point.x, point.y];
+};
+d3.svg.touches = function(container, touches) {
+  if (arguments.length < 2) touches = d3.event.touches;
+
+  return touches ? d3_array(touches).map(function(touch) {
+    var point = d3_svg_mousePoint(container, touch);
+    point.identifier = touch.identifier;
+    return point;
+  }) : [];
+};
+d3.svg.symbol = function() {
+  var type = d3_svg_symbolType,
+      size = d3_svg_symbolSize;
+
+  function symbol(d, i) {
+    return (d3_svg_symbols[type.call(this, d, i)]
+        || d3_svg_symbols.circle)
+        (size.call(this, d, i));
+  }
+
+  symbol.type = function(x) {
+    if (!arguments.length) return type;
+    type = d3.functor(x);
+    return symbol;
+  };
+
+  // size of symbol in square pixels
+  symbol.size = function(x) {
+    if (!arguments.length) return size;
+    size = d3.functor(x);
+    return symbol;
+  };
+
+  return symbol;
+};
+
+function d3_svg_symbolSize() {
+  return 64;
+}
+
+function d3_svg_symbolType() {
+  return "circle";
+}
+
+// TODO cross-diagonal?
+var d3_svg_symbols = {
+  "circle": function(size) {
+    var r = Math.sqrt(size / Math.PI);
+    return "M0," + r
+        + "A" + r + "," + r + " 0 1,1 0," + (-r)
+        + "A" + r + "," + r + " 0 1,1 0," + r
+        + "Z";
+  },
+  "cross": function(size) {
+    var r = Math.sqrt(size / 5) / 2;
+    return "M" + -3 * r + "," + -r
+        + "H" + -r
+        + "V" + -3 * r
+        + "H" + r
+        + "V" + -r
+        + "H" + 3 * r
+        + "V" + r
+        + "H" + r
+        + "V" + 3 * r
+        + "H" + -r
+        + "V" + r
+        + "H" + -3 * r
+        + "Z";
+  },
+  "diamond": function(size) {
+    var ry = Math.sqrt(size / (2 * d3_svg_symbolTan30)),
+        rx = ry * d3_svg_symbolTan30;
+    return "M0," + -ry
+        + "L" + rx + ",0"
+        + " 0," + ry
+        + " " + -rx + ",0"
+        + "Z";
+  },
+  "square": function(size) {
+    var r = Math.sqrt(size) / 2;
+    return "M" + -r + "," + -r
+        + "L" + r + "," + -r
+        + " " + r + "," + r
+        + " " + -r + "," + r
+        + "Z";
+  },
+  "triangle-down": function(size) {
+    var rx = Math.sqrt(size / d3_svg_symbolSqrt3),
+        ry = rx * d3_svg_symbolSqrt3 / 2;
+    return "M0," + ry
+        + "L" + rx +"," + -ry
+        + " " + -rx + "," + -ry
+        + "Z";
+  },
+  "triangle-up": function(size) {
+    var rx = Math.sqrt(size / d3_svg_symbolSqrt3),
+        ry = rx * d3_svg_symbolSqrt3 / 2;
+    return "M0," + -ry
+        + "L" + rx +"," + ry
+        + " " + -rx + "," + ry
+        + "Z";
+  }
+};
+
+d3.svg.symbolTypes = d3.keys(d3_svg_symbols);
+
+var d3_svg_symbolSqrt3 = Math.sqrt(3),
+    d3_svg_symbolTan30 = Math.tan(30 * Math.PI / 180);
+d3.svg.axis = function() {
+  var scale = d3.scale.linear(),
+      orient = "bottom",
+      tickMajorSize = 6,
+      tickMinorSize = 6,
+      tickEndSize = 6,
+      tickPadding = 3,
+      tickArguments_ = [10],
+      tickFormat_,
+      tickSubdivide = 0;
+
+  function axis(selection) {
+    selection.each(function(d, i, j) {
+      var g = d3.select(this);
+
+      // If selection is a transition, create subtransitions.
+      var transition = selection.delay ? function(o) {
+        var id = d3_transitionInheritId;
+        try {
+          d3_transitionInheritId = selection.id;
+          return o.transition()
+              .delay(selection[j][i].delay)
+              .duration(selection[j][i].duration)
+              .ease(selection.ease());
+        } finally {
+          d3_transitionInheritId = id;
+        }
+      } : Object;
+
+      // Ticks, or domain values for ordinal scales.
+      var ticks = scale.ticks ? scale.ticks.apply(scale, tickArguments_) : scale.domain(),
+          tickFormat = tickFormat_ == null ? (scale.tickFormat ? scale.tickFormat.apply(scale, tickArguments_) : String) : tickFormat_;
+
+      // Minor ticks.
+      var subticks = d3_svg_axisSubdivide(scale, ticks, tickSubdivide),
+          subtick = g.selectAll(".minor").data(subticks, String),
+          subtickEnter = subtick.enter().insert("line", "g").attr("class", "tick minor").style("opacity", 1e-6),
+          subtickExit = transition(subtick.exit()).style("opacity", 1e-6).remove(),
+          subtickUpdate = transition(subtick).style("opacity", 1);
+
+      // Major ticks.
+      var tick = g.selectAll("g").data(ticks, String),
+          tickEnter = tick.enter().insert("g", "path").style("opacity", 1e-6),
+          tickExit = transition(tick.exit()).style("opacity", 1e-6).remove(),
+          tickUpdate = transition(tick).style("opacity", 1),
+          tickTransform;
+
+      // Domain.
+      var range = d3_scaleRange(scale),
+          path = g.selectAll(".domain").data([0]),
+          pathEnter = path.enter().append("path").attr("class", "domain"),
+          pathUpdate = transition(path);
+
+      // Stash a snapshot of the new scale, and retrieve the old snapshot.
+      var scale1 = scale.copy(),
+          scale0 = this.__chart__ || scale1;
+      this.__chart__ = scale1;
+
+      tickEnter.append("line").attr("class", "tick");
+      tickEnter.append("text");
+      tickUpdate.select("text").text(tickFormat);
+
+      switch (orient) {
+        case "bottom": {
+          tickTransform = d3_svg_axisX;
+          subtickEnter.attr("y2", tickMinorSize);
+          subtickUpdate.attr("x2", 0).attr("y2", tickMinorSize);
+          tickEnter.select("line").attr("y2", tickMajorSize);
+          tickEnter.select("text").attr("y", Math.max(tickMajorSize, 0) + tickPadding);
+          tickUpdate.select("line").attr("x2", 0).attr("y2", tickMajorSize);
+          tickUpdate.select("text").attr("x", 0).attr("y", Math.max(tickMajorSize, 0) + tickPadding).attr("dy", ".71em").attr("text-anchor", "middle");
+          pathUpdate.attr("d", "M" + range[0] + "," + tickEndSize + "V0H" + range[1] + "V" + tickEndSize);
+          break;
+        }
+        case "top": {
+          tickTransform = d3_svg_axisX;
+          subtickEnter.attr("y2", -tickMinorSize);
+          subtickUpdate.attr("x2", 0).attr("y2", -tickMinorSize);
+          tickEnter.select("line").attr("y2", -tickMajorSize);
+          tickEnter.select("text").attr("y", -(Math.max(tickMajorSize, 0) + tickPadding));
+          tickUpdate.select("line").attr("x2", 0).attr("y2", -tickMajorSize);
+          tickUpdate.select("text").attr("x", 0).attr("y", -(Math.max(tickMajorSize, 0) + tickPadding)).attr("dy", "0em").attr("text-anchor", "middle");
+          pathUpdate.attr("d", "M" + range[0] + "," + -tickEndSize + "V0H" + range[1] + "V" + -tickEndSize);
+          break;
+        }
+        case "left": {
+          tickTransform = d3_svg_axisY;
+          subtickEnter.attr("x2", -tickMinorSize);
+          subtickUpdate.attr("x2", -tickMinorSize).attr("y2", 0);
+          tickEnter.select("line").attr("x2", -tickMajorSize);
+          tickEnter.select("text").attr("x", -(Math.max(tickMajorSize, 0) + tickPadding));
+          tickUpdate.select("line").attr("x2", -tickMajorSize).attr("y2", 0);
+          tickUpdate.select("text").attr("x", -(Math.max(tickMajorSize, 0) + tickPadding)).attr("y", 0).attr("dy", ".32em").attr("text-anchor", "end");
+          pathUpdate.attr("d", "M" + -tickEndSize + "," + range[0] + "H0V" + range[1] + "H" + -tickEndSize);
+          break;
+        }
+        case "right": {
+          tickTransform = d3_svg_axisY;
+          subtickEnter.attr("x2", tickMinorSize);
+          subtickUpdate.attr("x2", tickMinorSize).attr("y2", 0);
+          tickEnter.select("line").attr("x2", tickMajorSize);
+          tickEnter.select("text").attr("x", Math.max(tickMajorSize, 0) + tickPadding);
+          tickUpdate.select("line").attr("x2", tickMajorSize).attr("y2", 0);
+          tickUpdate.select("text").attr("x", Math.max(tickMajorSize, 0) + tickPadding).attr("y", 0).attr("dy", ".32em").attr("text-anchor", "start");
+          pathUpdate.attr("d", "M" + tickEndSize + "," + range[0] + "H0V" + range[1] + "H" + tickEndSize);
+          break;
+        }
+      }
+
+      // For quantitative scales:
+      // - enter new ticks from the old scale
+      // - exit old ticks to the new scale
+      if (scale.ticks) {
+        tickEnter.call(tickTransform, scale0);
+        tickUpdate.call(tickTransform, scale1);
+        tickExit.call(tickTransform, scale1);
+        subtickEnter.call(tickTransform, scale0);
+        subtickUpdate.call(tickTransform, scale1);
+        subtickExit.call(tickTransform, scale1);
+      }
+
+      // For ordinal scales:
+      // - any entering ticks are undefined in the old scale
+      // - any exiting ticks are undefined in the new scale
+      // Therefore, we only need to transition updating ticks.
+      else {
+        var dx = scale1.rangeBand() / 2, x = function(d) { return scale1(d) + dx; };
+        tickEnter.call(tickTransform, x);
+        tickUpdate.call(tickTransform, x);
+      }
+    });
+  }
+
+  axis.scale = function(x) {
+    if (!arguments.length) return scale;
+    scale = x;
+    return axis;
+  };
+
+  axis.orient = function(x) {
+    if (!arguments.length) return orient;
+    orient = x;
+    return axis;
+  };
+
+  axis.ticks = function() {
+    if (!arguments.length) return tickArguments_;
+    tickArguments_ = arguments;
+    return axis;
+  };
+
+  axis.tickFormat = function(x) {
+    if (!arguments.length) return tickFormat_;
+    tickFormat_ = x;
+    return axis;
+  };
+
+  axis.tickSize = function(x, y, z) {
+    if (!arguments.length) return tickMajorSize;
+    var n = arguments.length - 1;
+    tickMajorSize = +x;
+    tickMinorSize = n > 1 ? +y : tickMajorSize;
+    tickEndSize = n > 0 ? +arguments[n] : tickMajorSize;
+    return axis;
+  };
+
+  axis.tickPadding = function(x) {
+    if (!arguments.length) return tickPadding;
+    tickPadding = +x;
+    return axis;
+  };
+
+  axis.tickSubdivide = function(x) {
+    if (!arguments.length) return tickSubdivide;
+    tickSubdivide = +x;
+    return axis;
+  };
+
+  return axis;
+};
+
+function d3_svg_axisX(selection, x) {
+  selection.attr("transform", function(d) { return "translate(" + x(d) + ",0)"; });
+}
+
+function d3_svg_axisY(selection, y) {
+  selection.attr("transform", function(d) { return "translate(0," + y(d) + ")"; });
+}
+
+function d3_svg_axisSubdivide(scale, ticks, m) {
+  subticks = [];
+  if (m && ticks.length > 1) {
+    var extent = d3_scaleExtent(scale.domain()),
+        subticks,
+        i = -1,
+        n = ticks.length,
+        d = (ticks[1] - ticks[0]) / ++m,
+        j,
+        v;
+    while (++i < n) {
+      for (j = m; --j > 0;) {
+        if ((v = +ticks[i] - j * d) >= extent[0]) {
+          subticks.push(v);
+        }
+      }
+    }
+    for (--i, j = 0; ++j < m && (v = +ticks[i] + j * d) < extent[1];) {
+      subticks.push(v);
+    }
+  }
+  return subticks;
+}
+d3.svg.brush = function() {
+  var event = d3.dispatch("brushstart", "brush", "brushend"),
+      x, // x-scale, optional
+      y, // y-scale, optional
+      extent = [[0, 0], [0, 0]]; // [x0, y0], [x1, y1]
+
+  function brush(g) {
+    var resizes = x && y ? ["n", "e", "s", "w", "nw", "ne", "se", "sw"]
+        : x ? ["e", "w"]
+        : y ? ["n", "s"]
+        : [];
+
+    g.each(function() {
+      var g = d3.select(this).on("mousedown.brush", down),
+          bg = g.selectAll(".background").data([0]),
+          fg = g.selectAll(".extent").data([0]),
+          tz = g.selectAll(".resize").data(resizes, String),
+          e;
+
+      // An invisible, mouseable area for starting a new brush.
+      bg.enter().append("rect")
+          .attr("class", "background")
+          .style("visibility", "hidden")
+          .style("pointer-events", "all")
+          .style("cursor", "crosshair");
+
+      // The visible brush extent; style this as you like!
+      fg.enter().append("rect")
+          .attr("class", "extent")
+          .style("cursor", "move");
+
+      // More invisible rects for resizing the extent.
+      tz.enter().append("rect")
+          .attr("class", function(d) { return "resize " + d; })
+          .attr("width", 6)
+          .attr("height", 6)
+          .style("visibility", "hidden")
+          .style("cursor", function(d) { return d3_svg_brushCursor[d]; });
+
+      // Update the resizers.
+      tz.style("pointer-events", brush.empty() ? "none" : "all");
+
+      // Remove any superfluous resizers.
+      tz.exit().remove();
+
+      // Initialize the background to fill the defined range.
+      // If the range isn't defined, you can post-process.
+      if (x) {
+        e = d3_scaleRange(x);
+        bg.attr("x", e[0]).attr("width", e[1] - e[0]);
+        d3_svg_brushRedrawX(g, extent);
+      }
+      if (y) {
+        e = d3_scaleRange(y);
+        bg.attr("y", e[0]).attr("height", e[1] - e[0]);
+        d3_svg_brushRedrawY(g, extent);
+      }
+    });
+  }
+
+  function down() {
+    var target = d3.select(d3.event.target);
+
+    // Store some global state for the duration of the brush gesture.
+    d3_svg_brush = brush;
+    d3_svg_brushTarget = this;
+    d3_svg_brushExtent = extent;
+    d3_svg_brushOffset = d3.svg.mouse(d3_svg_brushTarget);
+
+    // If the extent was clicked on, drag rather than brush;
+    // store the offset between the mouse and extent origin instead.
+    if (d3_svg_brushDrag = target.classed("extent")) {
+      d3_svg_brushOffset[0] = extent[0][0] - d3_svg_brushOffset[0];
+      d3_svg_brushOffset[1] = extent[0][1] - d3_svg_brushOffset[1];
+    }
+
+    // If a resizer was clicked on, record which side is to be resized.
+    // Also, set the offset to the opposite side.
+    else if (target.classed("resize")) {
+      d3_svg_brushResize = d3.event.target.__data__;
+      d3_svg_brushOffset[0] = extent[+/w$/.test(d3_svg_brushResize)][0];
+      d3_svg_brushOffset[1] = extent[+/^n/.test(d3_svg_brushResize)][1];
+    }
+
+    // If the ALT key is down when starting a brush, the center is at the mouse.
+    else if (d3.event.altKey) {
+      d3_svg_brushCenter = d3_svg_brushOffset.slice();
+    }
+
+    // Restrict which dimensions are resized.
+    d3_svg_brushX = !/^(n|s)$/.test(d3_svg_brushResize) && x;
+    d3_svg_brushY = !/^(e|w)$/.test(d3_svg_brushResize) && y;
+
+    // Notify listeners.
+    d3_svg_brushDispatch = dispatcher(this, arguments);
+    d3_svg_brushDispatch("brushstart");
+    d3_svg_brushMove();
+    d3_eventCancel();
+  }
+
+  function dispatcher(that, argumentz) {
+    return function(type) {
+      var e = d3.event;
+      try {
+        d3.event = {type: type, target: brush};
+        event[type].apply(that, argumentz);
+      } finally {
+        d3.event = e;
+      }
+    };
+  }
+
+  brush.x = function(z) {
+    if (!arguments.length) return x;
+    x = z;
+    return brush;
+  };
+
+  brush.y = function(z) {
+    if (!arguments.length) return y;
+    y = z;
+    return brush;
+  };
+
+  brush.extent = function(z) {
+    var x0, x1, y0, y1, t;
+
+    // Invert the pixel extent to data-space.
+    if (!arguments.length) {
+      if (x) {
+        x0 = extent[0][0], x1 = extent[1][0];
+        if (x.invert) x0 = x.invert(x0), x1 = x.invert(x1);
+        if (x1 < x0) t = x0, x0 = x1, x1 = t;
+      }
+      if (y) {
+        y0 = extent[0][1], y1 = extent[1][1];
+        if (y.invert) y0 = y.invert(y0), y1 = y.invert(y1);
+        if (y1 < y0) t = y0, y0 = y1, y1 = t;
+      }
+      return x && y ? [[x0, y0], [x1, y1]] : x ? [x0, x1] : y && [y0, y1];
+    }
+
+    // Scale the data-space extent to pixels.
+    if (x) {
+      x0 = z[0], x1 = z[1];
+      if (y) x0 = x0[0], x1 = x1[0];
+      if (x.invert) x0 = x(x0), x1 = x(x1);
+      if (x1 < x0) t = x0, x0 = x1, x1 = t;
+      extent[0][0] = x0, extent[1][0] = x1;
+    }
+    if (y) {
+      y0 = z[0], y1 = z[1];
+      if (x) y0 = y0[1], y1 = y1[1];
+      if (y.invert) y0 = y(y0), y1 = y(y1);
+      if (y1 < y0) t = y0, y0 = y1, y1 = t;
+      extent[0][1] = y0, extent[1][1] = y1;
+    }
+
+    return brush;
+  };
+
+  brush.clear = function() {
+    extent[0][0] =
+    extent[0][1] =
+    extent[1][0] =
+    extent[1][1] = 0;
+    return brush;
+  };
+
+  brush.empty = function() {
+    return (x && extent[0][0] === extent[1][0])
+        || (y && extent[0][1] === extent[1][1]);
+  };
+
+  d3.select(window)
+      .on("mousemove.brush", d3_svg_brushMove)
+      .on("mouseup.brush", d3_svg_brushUp)
+      .on("keydown.brush", d3_svg_brushKeydown)
+      .on("keyup.brush", d3_svg_brushKeyup);
+
+  return d3.rebind(brush, event, "on");
+};
+
+var d3_svg_brush,
+    d3_svg_brushDispatch,
+    d3_svg_brushTarget,
+    d3_svg_brushX,
+    d3_svg_brushY,
+    d3_svg_brushExtent,
+    d3_svg_brushDrag,
+    d3_svg_brushResize,
+    d3_svg_brushCenter,
+    d3_svg_brushOffset;
+
+function d3_svg_brushRedrawX(g, extent) {
+  g.select(".extent").attr("x", extent[0][0]);
+  g.selectAll(".n,.s,.w,.nw,.sw").attr("x", extent[0][0] - 2);
+  g.selectAll(".e,.ne,.se").attr("x", extent[1][0] - 3);
+  g.selectAll(".extent,.n,.s").attr("width", extent[1][0] - extent[0][0]);
+}
+
+function d3_svg_brushRedrawY(g, extent) {
+  g.select(".extent").attr("y", extent[0][1]);
+  g.selectAll(".n,.e,.w,.nw,.ne").attr("y", extent[0][1] - 3);
+  g.selectAll(".s,.se,.sw").attr("y", extent[1][1] - 4);
+  g.selectAll(".extent,.e,.w").attr("height", extent[1][1] - extent[0][1]);
+}
+
+function d3_svg_brushKeydown() {
+  if (d3.event.keyCode == 32 && d3_svg_brushTarget && !d3_svg_brushDrag) {
+    d3_svg_brushCenter = null;
+    d3_svg_brushOffset[0] -= d3_svg_brushExtent[1][0];
+    d3_svg_brushOffset[1] -= d3_svg_brushExtent[1][1];
+    d3_svg_brushDrag = 2;
+    d3_eventCancel();
+  }
+}
+
+function d3_svg_brushKeyup() {
+  if (d3.event.keyCode == 32 && d3_svg_brushDrag == 2) {
+    d3_svg_brushOffset[0] += d3_svg_brushExtent[1][0];
+    d3_svg_brushOffset[1] += d3_svg_brushExtent[1][1];
+    d3_svg_brushDrag = 0;
+    d3_eventCancel();
+  }
+}
+
+function d3_svg_brushMove() {
+  if (d3_svg_brushOffset) {
+    var mouse = d3.svg.mouse(d3_svg_brushTarget),
+        g = d3.select(d3_svg_brushTarget);
+
+    if (!d3_svg_brushDrag) {
+
+      // If needed, determine the center from the current extent.
+      if (d3.event.altKey) {
+        if (!d3_svg_brushCenter) {
+          d3_svg_brushCenter = [
+            (d3_svg_brushExtent[0][0] + d3_svg_brushExtent[1][0]) / 2,
+            (d3_svg_brushExtent[0][1] + d3_svg_brushExtent[1][1]) / 2
+          ];
+        }
+
+        // Update the offset, for when the ALT key is released.
+        d3_svg_brushOffset[0] = d3_svg_brushExtent[+(mouse[0] < d3_svg_brushCenter[0])][0];
+        d3_svg_brushOffset[1] = d3_svg_brushExtent[+(mouse[1] < d3_svg_brushCenter[1])][1];
+      }
+
+      // When the ALT key is released, we clear the center.
+      else d3_svg_brushCenter = null;
+    }
+
+    // Update the brush extent for each dimension.
+    if (d3_svg_brushX) {
+      d3_svg_brushMove1(mouse, d3_svg_brushX, 0);
+      d3_svg_brushRedrawX(g, d3_svg_brushExtent);
+    }
+    if (d3_svg_brushY) {
+      d3_svg_brushMove1(mouse, d3_svg_brushY, 1);
+      d3_svg_brushRedrawY(g, d3_svg_brushExtent);
+    }
+
+    // Notify listeners.
+    d3_svg_brushDispatch("brush");
+  }
+}
+
+function d3_svg_brushMove1(mouse, scale, i) {
+  var range = d3_scaleRange(scale),
+      r0 = range[0],
+      r1 = range[1],
+      offset = d3_svg_brushOffset[i],
+      size = d3_svg_brushExtent[1][i] - d3_svg_brushExtent[0][i],
+      min,
+      max;
+
+  // When dragging, reduce the range by the extent size and offset.
+  if (d3_svg_brushDrag) {
+    r0 -= offset;
+    r1 -= size + offset;
+  }
+
+  // Clamp the mouse so that the extent fits within the range extent.
+  min = Math.max(r0, Math.min(r1, mouse[i]));
+
+  // Compute the new extent bounds.
+  if (d3_svg_brushDrag) {
+    max = (min += offset) + size;
+  } else {
+
+    // If the ALT key is pressed, then preserve the center of the extent.
+    if (d3_svg_brushCenter) offset = Math.max(r0, Math.min(r1, 2 * d3_svg_brushCenter[i] - min));
+
+    // Compute the min and max of the offset and mouse.
+    if (offset < min) {
+      max = min;
+      min = offset;
+    } else {
+      max = offset;
+    }
+  }
+
+  // Update the stored bounds.
+  d3_svg_brushExtent[0][i] = min;
+  d3_svg_brushExtent[1][i] = max;
+}
+
+function d3_svg_brushUp() {
+  if (d3_svg_brushOffset) {
+    d3_svg_brushMove();
+    d3.select(d3_svg_brushTarget).selectAll(".resize").style("pointer-events", d3_svg_brush.empty() ? "none" : "all");
+    d3_svg_brushDispatch("brushend");
+    d3_svg_brush =
+    d3_svg_brushDispatch =
+    d3_svg_brushTarget =
+    d3_svg_brushX =
+    d3_svg_brushY =
+    d3_svg_brushExtent =
+    d3_svg_brushDrag =
+    d3_svg_brushResize =
+    d3_svg_brushCenter =
+    d3_svg_brushOffset = null;
+    d3_eventCancel();
+  }
+}
+
+var d3_svg_brushCursor = {
+  n: "ns-resize",
+  e: "ew-resize",
+  s: "ns-resize",
+  w: "ew-resize",
+  nw: "nwse-resize",
+  ne: "nesw-resize",
+  se: "nwse-resize",
+  sw: "nesw-resize"
+};
+d3.behavior = {};
+// TODO Track touch points by identifier.
+
+d3.behavior.drag = function() {
+  var event = d3.dispatch("drag", "dragstart", "dragend"),
+      origin = null;
+
+  function drag() {
+    this
+        .on("mousedown.drag", mousedown)
+        .on("touchstart.drag", mousedown);
+
+    d3.select(window)
+        .on("mousemove.drag", d3_behavior_dragMove)
+        .on("touchmove.drag", d3_behavior_dragMove)
+        .on("mouseup.drag", d3_behavior_dragUp, true)
+        .on("touchend.drag", d3_behavior_dragUp, true)
+        .on("click.drag", d3_behavior_dragClick, true);
+  }
+
+  // snapshot the local context for subsequent dispatch
+  function start() {
+    d3_behavior_dragEvent = event;
+    d3_behavior_dragEventTarget = d3.event.target;
+    d3_behavior_dragTarget = this;
+    d3_behavior_dragArguments = arguments;
+    d3_behavior_dragOrigin = d3_behavior_dragPoint();
+    if (origin) {
+      d3_behavior_dragOffset = origin.apply(d3_behavior_dragTarget, d3_behavior_dragArguments);
+      d3_behavior_dragOffset = [d3_behavior_dragOffset.x - d3_behavior_dragOrigin[0], d3_behavior_dragOffset.y - d3_behavior_dragOrigin[1]];
+    } else {
+      d3_behavior_dragOffset = [0, 0];
+    }
+    d3_behavior_dragMoved = 0;
+  }
+
+  function mousedown() {
+    start.apply(this, arguments);
+    d3_behavior_dragDispatch("dragstart");
+  }
+
+  drag.origin = function(x) {
+    if (!arguments.length) return origin;
+    origin = x;
+    return drag;
+  };
+
+  return d3.rebind(drag, event, "on");
+};
+
+var d3_behavior_dragEvent,
+    d3_behavior_dragEventTarget,
+    d3_behavior_dragTarget,
+    d3_behavior_dragArguments,
+    d3_behavior_dragOffset,
+    d3_behavior_dragOrigin,
+    d3_behavior_dragMoved;
+
+function d3_behavior_dragDispatch(type) {
+  var p = d3_behavior_dragPoint(),
+      o = d3.event,
+      e = d3.event = {type: type};
+
+  if (p) {
+    e.x = p[0] + d3_behavior_dragOffset[0];
+    e.y = p[1] + d3_behavior_dragOffset[1];
+    e.dx = p[0] - d3_behavior_dragOrigin[0];
+    e.dy = p[1] - d3_behavior_dragOrigin[1];
+    d3_behavior_dragMoved |= e.dx | e.dy;
+    d3_behavior_dragOrigin = p;
+  }
+
+  try {
+    d3_behavior_dragEvent[type].apply(d3_behavior_dragTarget, d3_behavior_dragArguments);
+  } finally {
+    d3.event = o;
+  }
+
+  o.stopPropagation();
+  o.preventDefault();
+}
+
+function d3_behavior_dragPoint() {
+  var p = d3_behavior_dragTarget.parentNode,
+      t = d3.event.changedTouches;
+  return p && (t
+      ? d3.svg.touches(p, t)[0]
+      : d3.svg.mouse(p));
+}
+
+function d3_behavior_dragMove() {
+  if (!d3_behavior_dragTarget) return;
+  var parent = d3_behavior_dragTarget.parentNode;
+
+  // O NOES! The drag element was removed from the DOM.
+  if (!parent) return d3_behavior_dragUp();
+
+  d3_behavior_dragDispatch("drag");
+  d3_eventCancel();
+}
+
+function d3_behavior_dragUp() {
+  if (!d3_behavior_dragTarget) return;
+  d3_behavior_dragDispatch("dragend");
+
+  // If the node was moved, prevent the mouseup from propagating.
+  // Also prevent the subsequent click from propagating (e.g., for anchors).
+  if (d3_behavior_dragMoved) {
+    d3_eventCancel();
+    d3_behavior_dragMoved = d3.event.target === d3_behavior_dragEventTarget;
+  }
+
+  d3_behavior_dragEvent =
+  d3_behavior_dragEventTarget =
+  d3_behavior_dragTarget =
+  d3_behavior_dragArguments =
+  d3_behavior_dragOffset =
+  d3_behavior_dragOrigin = null;
+}
+
+function d3_behavior_dragClick() {
+  if (d3_behavior_dragMoved) {
+    d3_eventCancel();
+    d3_behavior_dragMoved = 0;
+  }
+}
+// TODO unbind zoom behavior?
+d3.behavior.zoom = function() {
+  var xyz = [0, 0, 0],
+      event = d3.dispatch("zoom"),
+      extent = d3_behavior_zoomInfiniteExtent;
+
+  function zoom() {
+    this
+        .on("mousedown.zoom", mousedown)
+        .on("mousewheel.zoom", mousewheel)
+        .on("DOMMouseScroll.zoom", mousewheel)
+        .on("dblclick.zoom", dblclick)
+        .on("touchstart.zoom", touchstart);
+
+    d3.select(window)
+        .on("mousemove.zoom", d3_behavior_zoomMousemove)
+        .on("mouseup.zoom", d3_behavior_zoomMouseup)
+        .on("touchmove.zoom", d3_behavior_zoomTouchmove)
+        .on("touchend.zoom", d3_behavior_zoomTouchup)
+        .on("click.zoom", d3_behavior_zoomClick, true);
+  }
+
+  // snapshot the local context for subsequent dispatch
+  function start() {
+    d3_behavior_zoomXyz = xyz;
+    d3_behavior_zoomExtent = extent;
+    d3_behavior_zoomDispatch = event.zoom;
+    d3_behavior_zoomEventTarget = d3.event.target;
+    d3_behavior_zoomTarget = this;
+    d3_behavior_zoomArguments = arguments;
+  }
+
+  function mousedown() {
+    start.apply(this, arguments);
+    d3_behavior_zoomPanning = d3_behavior_zoomLocation(d3.svg.mouse(d3_behavior_zoomTarget));
+    d3_behavior_zoomMoved = 0;
+    d3.event.preventDefault();
+    window.focus();
+  }
+
+  // store starting mouse location
+  function mousewheel() {
+    start.apply(this, arguments);
+    if (!d3_behavior_zoomZooming) d3_behavior_zoomZooming = d3_behavior_zoomLocation(d3.svg.mouse(d3_behavior_zoomTarget));
+    d3_behavior_zoomTo(d3_behavior_zoomDelta() + xyz[2], d3.svg.mouse(d3_behavior_zoomTarget), d3_behavior_zoomZooming);
+  }
+
+  function dblclick() {
+    start.apply(this, arguments);
+    var mouse = d3.svg.mouse(d3_behavior_zoomTarget);
+    d3_behavior_zoomTo(d3.event.shiftKey ? Math.ceil(xyz[2] - 1) : Math.floor(xyz[2] + 1), mouse, d3_behavior_zoomLocation(mouse));
+  }
+
+  // doubletap detection
+  function touchstart() {
+    start.apply(this, arguments);
+    var touches = d3_behavior_zoomTouchup(),
+        touch,
+        now = Date.now();
+    if ((touches.length === 1) && (now - d3_behavior_zoomLast < 300)) {
+      d3_behavior_zoomTo(1 + Math.floor(xyz[2]), touch = touches[0], d3_behavior_zoomLocations[touch.identifier]);
+    }
+    d3_behavior_zoomLast = now;
+  }
+
+  zoom.extent = function(x) {
+    if (!arguments.length) return extent;
+    extent = x == null ? d3_behavior_zoomInfiniteExtent : x;
+    return zoom;
+  };
+
+  return d3.rebind(zoom, event, "on");
+};
+
+var d3_behavior_zoomDiv,
+    d3_behavior_zoomPanning,
+    d3_behavior_zoomZooming,
+    d3_behavior_zoomLocations = {}, // identifier -> location
+    d3_behavior_zoomLast = 0,
+    d3_behavior_zoomXyz,
+    d3_behavior_zoomExtent,
+    d3_behavior_zoomDispatch,
+    d3_behavior_zoomEventTarget,
+    d3_behavior_zoomTarget,
+    d3_behavior_zoomArguments,
+    d3_behavior_zoomMoved;
+
+function d3_behavior_zoomLocation(point) {
+  return [
+    point[0] - d3_behavior_zoomXyz[0],
+    point[1] - d3_behavior_zoomXyz[1],
+    d3_behavior_zoomXyz[2]
+  ];
+}
+
+// detect the pixels that would be scrolled by this wheel event
+function d3_behavior_zoomDelta() {
+
+  // mousewheel events are totally broken!
+  // https://bugs.webkit.org/show_bug.cgi?id=40441
+  // not only that, but Chrome and Safari differ in re. to acceleration!
+  if (!d3_behavior_zoomDiv) {
+    d3_behavior_zoomDiv = d3.select("body").append("div")
+        .style("visibility", "hidden")
+        .style("top", 0)
+        .style("height", 0)
+        .style("width", 0)
+        .style("overflow-y", "scroll")
+      .append("div")
+        .style("height", "2000px")
+      .node().parentNode;
+  }
+
+  var e = d3.event, delta;
+  try {
+    d3_behavior_zoomDiv.scrollTop = 1000;
+    d3_behavior_zoomDiv.dispatchEvent(e);
+    delta = 1000 - d3_behavior_zoomDiv.scrollTop;
+  } catch (error) {
+    delta = e.wheelDelta || (-e.detail * 5);
+  }
+
+  return delta * .005;
+}
+
+// Note: Since we don't rotate, it's possible for the touches to become
+// slightly detached from their original positions. Thus, we recompute the
+// touch points on touchend as well as touchstart!
+function d3_behavior_zoomTouchup() {
+  var touches = d3.svg.touches(d3_behavior_zoomTarget),
+      i = -1,
+      n = touches.length,
+      touch;
+  while (++i < n) d3_behavior_zoomLocations[(touch = touches[i]).identifier] = d3_behavior_zoomLocation(touch);
+  return touches;
+}
+
+function d3_behavior_zoomTouchmove() {
+  var touches = d3.svg.touches(d3_behavior_zoomTarget);
+  switch (touches.length) {
+
+    // single-touch pan
+    case 1: {
+      var touch = touches[0];
+      d3_behavior_zoomTo(d3_behavior_zoomXyz[2], touch, d3_behavior_zoomLocations[touch.identifier]);
+      break;
+    }
+
+    // double-touch pan + zoom
+    case 2: {
+      var p0 = touches[0],
+          p1 = touches[1],
+          p2 = [(p0[0] + p1[0]) / 2, (p0[1] + p1[1]) / 2],
+          l0 = d3_behavior_zoomLocations[p0.identifier],
+          l1 = d3_behavior_zoomLocations[p1.identifier],
+          l2 = [(l0[0] + l1[0]) / 2, (l0[1] + l1[1]) / 2, l0[2]];
+      d3_behavior_zoomTo(Math.log(d3.event.scale) / Math.LN2 + l0[2], p2, l2);
+      break;
+    }
+  }
+}
+
+function d3_behavior_zoomMousemove() {
+  d3_behavior_zoomZooming = null;
+  if (d3_behavior_zoomPanning) {
+    d3_behavior_zoomMoved = 1;
+    d3_behavior_zoomTo(d3_behavior_zoomXyz[2], d3.svg.mouse(d3_behavior_zoomTarget), d3_behavior_zoomPanning);
+  }
+}
+
+function d3_behavior_zoomMouseup() {
+  if (d3_behavior_zoomPanning) {
+    if (d3_behavior_zoomMoved) {
+      d3_eventCancel();
+      d3_behavior_zoomMoved = d3_behavior_zoomEventTarget === d3.event.target;
+    }
+
+    d3_behavior_zoomXyz =
+    d3_behavior_zoomExtent =
+    d3_behavior_zoomDispatch =
+    d3_behavior_zoomEventTarget =
+    d3_behavior_zoomTarget =
+    d3_behavior_zoomArguments =
+    d3_behavior_zoomPanning = null;
+  }
+}
+
+function d3_behavior_zoomClick() {
+  if (d3_behavior_zoomMoved) {
+    d3_eventCancel();
+    d3_behavior_zoomMoved = 0;
+  }
+}
+
+function d3_behavior_zoomTo(z, x0, x1) {
+  z = d3_behavior_zoomExtentClamp(z, 2);
+  var j = Math.pow(2, d3_behavior_zoomXyz[2]),
+      k = Math.pow(2, z),
+      K = Math.pow(2, (d3_behavior_zoomXyz[2] = z) - x1[2]),
+      x_ = d3_behavior_zoomXyz[0],
+      y_ = d3_behavior_zoomXyz[1],
+      x = d3_behavior_zoomXyz[0] = d3_behavior_zoomExtentClamp((x0[0] - x1[0] * K), 0, k),
+      y = d3_behavior_zoomXyz[1] = d3_behavior_zoomExtentClamp((x0[1] - x1[1] * K), 1, k),
+      o = d3.event; // Events can be reentrant (e.g., focus).
+
+  d3.event = {
+    scale: k,
+    translate: [x, y],
+    transform: function(sx, sy) {
+      if (sx) transform(sx, x_, x);
+      if (sy) transform(sy, y_, y);
+    }
+  };
+
+  function transform(scale, a, b) {
+    scale.domain(scale.range().map(function(v) { return scale.invert(((v - b) * j) / k + a); }));
+  }
+
+  try {
+    d3_behavior_zoomDispatch.apply(d3_behavior_zoomTarget, d3_behavior_zoomArguments);
+  } finally {
+    d3.event = o;
+  }
+
+  o.preventDefault();
+}
+
+var d3_behavior_zoomInfiniteExtent = [
+  [-Infinity, Infinity],
+  [-Infinity, Infinity],
+  [-Infinity, Infinity]
+];
+
+function d3_behavior_zoomExtentClamp(x, i, k) {
+  var range = d3_behavior_zoomExtent[i],
+      r0 = range[0],
+      r1 = range[1];
+  return arguments.length === 3
+      ? Math.max(r1 * (r1 === Infinity ? -Infinity : 1 / k - 1),
+        Math.min(r0 === -Infinity ? Infinity : r0, x / k)) * k
+      : Math.max(r0, Math.min(r1, x));
+}
+})();
diff --git a/wordCloud/screenshot.png b/wordCloud/screenshot.png
new file mode 100644
index 0000000..25b983c
Binary files /dev/null and b/wordCloud/screenshot.png differ
diff --git a/wordCloud/text.txt b/wordCloud/text.txt
new file mode 100644
index 0000000..302de71
--- /dev/null
+++ b/wordCloud/text.txt
@@ -0,0 +1,2 @@
+The sun did not shine. It was too wet to play. So we sat in the house All that cold, cold, wet day.
+I sat there with Sally, we sat there we two. And I said, “How I wish we had something to do!” Too wet to go out and too cold to play ball. So we sat in the house. We did nothing at all. So all we could do was to Sit! Sit! Sit! Sit! And we did not like it. Not one little bit. And then something went BUMP! How that bump made us jump! We looked! Then we saw him step in on the mat! We looked! And we saw him! The Cat in the Hat! And he said to us, “Why do you sit there like that?” “I know it is wet And the sun is not sunny. But we can have lots of good fun that is funny!” “I know some good games we could play,” Said the cat. “I know some new tricks,” Said the Cat in the Hat. “A lot of good tricks. I will show them to you. Your mother Will not mind at all if I do.” Then Sally and I Did not know what to say. Our mother was out of the house For the day. But the fish said, “No! No! Make that cat go away! Tell that Cat in the Hat you do NOT want to play. He should not be here. He should not be about. He should not be here When your mother is out!” “Now! Now! Have no fear. Have no fear!” said the cat. “My tricks are not bad,” Said the Cat in the Hat. “Why, we can have lots of good fun, if you wish, With a game that I call UP UP UP with a fish!” “Put me down!” said the fish. “This is no fun at all! Put me down!” said the fish. “I do NOT wish to fall!” “Have no fear!” said the cat. “I will not let you fall. I will hold you up high as I stand on a ball. With a book on one hand! And a cup on my hat! But that is not ALL I can do!” said the cat... “Look at me! Look at me now!” said the cat. “With a cup and a cake on the top of my hat! I can hold up TWO books! I can hold up the fish! And a little toy ship! And some milk on a dish! And look! I can hop up and down on the ball! But that is not all! Oh, no. That is not all... “Look at me! Look at me! Look at me NOW! It is fun to have fun But you have to know how. I can hold up the cup And the milk and the cake! I can hold up these books! And the fish on a rake! I can hold the toy ship And a little toy man! And look! With my tail I can hold a red fan! I can fan with the fan As I hop on the ball! But that is not all. Oh, no. That is not all...” That is what the cat said... Then he fell on his head! He came down with a bump from up there on the ball. And Sally and I, We saw ALL the things fall! And our fish came down, too. He fell into a pot! He said, “Do I like this? Oh, no! I do not. This is not a good game,” Said our fish as he lit. “No, I do not like it, Not one little bit!” “Now look what you did!” Said the fish to the cat. “Now look at this house! Look at this! Look at that! You sank our toy ship, Sank it deep in the cake. You shook up our house And you bent our new rake. You SHOULD NOT be here when our mother is not. You get out of this house!” Said the fish in the pot. “But I like it here. Oh, I like it a lot!” Said the Cat in the Hat To the fish in the pot. “I will NOT go away. I do NOT wish to go! And so,” said the Cat in the Hat, “So so so... I will show you Another good game that I know!” And then he ran out. And then, fast as a fox, The Cat in the Hat Came back in with a box. A big red wood box. It was shut with a hook. “Now look at this trick,” Said the cat. “Take a look!” Then he got up on top With a tip of his hat. “I call this game FUN IN A BOX,” Said the cat. “In this box are two things I will show to you now. You will like these two things,” Said the cat with a bow. “I will pick up the hook. You will see something new. Two things. And I call them Thing One and Thing Two. These things will not bite you. They want to have fun.” Then, out of the box Came Thing Two and Thing One! And they ran to us fast. They said, “How do you do? Would you like to shake hands With Thing One and Thing Two?” And Sally and I Did now know what to do. So we had to shake hands With Thing One and Thing Two. We shook their two hands. But our fish said, “No! No! Those Things should not be In this house! Make them go! “They should not be here When your mother is not! Put them out! Put them out!” Said the fish in the pot. “Have no fear, little fish,” Said the Cat in the Hat. “These things are good Things.” And he gave them a pat. “They are tame. Oh, so tame! They have come here to play. They will give you some fun On this wet, wet day.” “Now, here is a game that they like,” Said the cat. “They like to fly kites,” Said the Cat in the Hat. “No! Not in the house!” Said the fish in the pot. “They should not fly kites In a house! They should not. Oh, the things they will bump! Oh, the things they will hit! Oh, I do not like it! Not one little bit!” Then Sally and I Saw them run down the hall. We saw those two Things Bump their kites on the wall! Bump! Thump! Thump! Bump! Down the wall in the hall. Thing Two and Thing One! They ran up! They ran down! On the string of one kit We saw Mother’s new gown! Her gown with the dots That are pink, white and red. Then we saw one kite bump On the head of her bed! Then those Things ran about With big bumps, jumps and kicks And with hops and big thumps And all kinds of bad tricks. And I said, “I do NOT like the way that they play! If Mother could see this, Oh, what would she say!” Then our fish said, “Look! Look!” And our fish shook with fear. “Your mother is on her way home! Do you hear? Oh, what will she do to us? What will she say? Oh, she will not like it To find us this way!” “So, DO something! Fast!” said the fish. “Do you hear! I saw her. Your mother! Your mother is near! So, as fast as you can, Think of something to do! You will have to get rid of Thing One and Thing Two!” So, as fast as I could, I went after my net. And I said, “With my net I can get them I bet. I bet, with my net, I can get those Things yet!” Then I let down my net. It came down the a PLOP! And I had them! At last! Those two Things had to stop. Then I said to the cat, “Now, you do as I say. You pack up those Things And you take them away!” “Oh dear!” said the cat. “You did not like our game... Oh dear. What shame! What a shame! What a shame!” Then he shut up the Things In the box with the hook. And the cat went away With a sad kind of look. “That is good said the fish.”He has gone away. Yes. But your mother will come. She will find this big mess! And this mess is so big And so deep and so tall, we can not pick it up. There is no way at all!” And THEN! Who was back in the house? Why, the cat! “Have no fear of this mess,” Said the Cat in the Hat. “I always pick up all my playthings And so... I will show you another good trick that I know!” Then we saw him pick up all the things that were down. He picked up the cake, And the rake, And the gown, And the milk, and the strings, And the books, and the dish, And the fan, and the cup, And the ship, and the fish. And he put them away. Then he said, “That is that.” And then he was gone, with the tip of his hat. Then our mother came in And said said to us two, “Did you have any fun? Tell me. What did you do?” And Sally and I did not know What to say. Should we tell her The things that went on there that day? She we tell her about it? Now, what SHOULD we do? Well... what would YOU do If you mother asked YOU?
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