diff --git a/bower.json b/bower.json
index 1685537..e86e4cf 100644
--- a/bower.json
+++ b/bower.json
@@ -1,6 +1,6 @@
 {
   "name": "nya-bootstrap-select",
-  "version": "2.1.8",
+  "version": "2.1.9",
   "main": [
     "dist/js/nya-bs-select.js",
     "dist/css/nya-bs-select.css"
diff --git a/dist/css/nya-bs-select.css b/dist/css/nya-bs-select.css
index 9d1184f..953c263 100644
--- a/dist/css/nya-bs-select.css
+++ b/dist/css/nya-bs-select.css
@@ -1,5 +1,5 @@
 /**
- * @lordfriend/nya-bootstrap-select v2.1.8
+ * @lordfriend/nya-bootstrap-select v2.1.9
  * Copyright 2014 Nyasoft
  * Licensed under MIT license
  */
diff --git a/dist/css/nya-bs-select.min.css b/dist/css/nya-bs-select.min.css
index d9f5b88..e576047 100644
--- a/dist/css/nya-bs-select.min.css
+++ b/dist/css/nya-bs-select.min.css
@@ -1,5 +1,5 @@
 /**
- * @lordfriend/nya-bootstrap-select v2.1.8
+ * @lordfriend/nya-bootstrap-select v2.1.9
  * Copyright 2014 Nyasoft
  * Licensed under MIT license
  */
diff --git a/dist/js/nya-bs-select.js b/dist/js/nya-bs-select.js
index e8506fc..c4313d7 100644
--- a/dist/js/nya-bs-select.js
+++ b/dist/js/nya-bs-select.js
@@ -1,5 +1,5 @@
 /**
- * @lordfriend/nya-bootstrap-select v2.1.8
+ * @lordfriend/nya-bootstrap-select v2.1.9
  * Copyright 2014 Nyasoft
  * Licensed under MIT license
  */
@@ -431,8 +431,8 @@ nyaBsSelect.directive('nyaBsSelect', ['$parse', '$document', '$timeout', '$compi
 
   var ACTIONS_BOX = '<div class="bs-actionsbox">' +
     '<div class="btn-group btn-group-sm btn-block">' +
-    '<button class="actions-btn bs-select-all btn btn-default">SELECT ALL</button>' +
-    '<button class="actions-btn bs-deselect-all btn btn-default">DESELECT ALL</button>' +
+    '<button type="button" class="actions-btn bs-select-all btn btn-default">SELECT ALL</button>' +
+    '<button type="button" class="actions-btn bs-deselect-all btn btn-default">DESELECT ALL</button>' +
     '</div>' +
     '</div>';
 
diff --git a/dist/js/nya-bs-select.min.js b/dist/js/nya-bs-select.min.js
index 0041653..040bd06 100644
--- a/dist/js/nya-bs-select.min.js
+++ b/dist/js/nya-bs-select.min.js
@@ -1,6 +1,6 @@
 /**
- * @lordfriend/nya-bootstrap-select v2.1.8
+ * @lordfriend/nya-bootstrap-select v2.1.9
  * Copyright 2014 Nyasoft
  * Licensed under MIT license
  */
-!function(){"use strict";function a(){return++j}function b(a){return a&&a.window===a}function c(a){return"string"==typeof a}function d(a){if(null==a||b(a))return!1;var d=a.length;return 1===a.nodeType&&d?!0:c(a)||Array.isArray(a)||0===d||"number"==typeof d&&d>0&&d-1 in a}function e(){return Object.create(null)}function f(b,c){var d,e=typeof b;return"function"==e||"object"==e&&null!==b?"function"==typeof(d=b.$$hashKey)?d=b.$$hashKey():void 0===d&&(d=b.$$hashKey=(c||a)()):d=b,e+":"+d}function g(a,b,c){var d,e,f=[],g=[];for(d=0;d<b.length;d++)for(e=0;e<a.length;e++)a[e][c]?a[e][c]===b[d]&&g.push(a[e]):f.push(a[e]);return g=g.concat(f)}function h(a){var b=a[0],c=a[a.length-1],d=[b];do{if(b=b.nextSibling,!b)break;d.push(b)}while(b!==c);return angular.element(d)}function i(a,b){for(;(a=a[b])&&1!==a.nodeType;);return a}var j=0,k=function(a){return a.clone[0]},l=function(a){return a.clone[a.clone.length-1]},m=function(a,b,c,d,e,f,g,h){a[c]=d,e&&(a[e]=f),a.$index=b,a.$first=0===b,a.$last=b===g-1,a.$middle=!(a.$first||a.$last),a.$odd=!(a.$even=0===(1&b)),h&&(a.$group=h)},n=function(a,b){a.data("isolateScope",b)},o=function(a,b){var c,d=a.length;if(0===d)return!1;for(c=0;d>c;c++)if(v(b,a[c]))return!0;return!1},p=function(a,b){var c,d=a.length;if(0===d)return-1;for(c=0;d>c;c++)if(v(b,a[c]))return c;return-1},q=function(a,b,c){var d,e=a,f=typeof c;if(a==b)return null;do if("string"===f){if(d=" "+e.className+" ",1===e.nodeType&&d.replace(/[\t\r\n\f]/g," ").indexOf(c)>=0)return e}else if(e==c)return e;while((e=e.parentNode)&&e!=b&&9!==e.nodeType);return null},r=function(a){var b,c=a.className.replace(/[\t\r\n\f]/g," ").trim();b=c.split(" ");for(var d=0;d<b.length;d++)/\s+/.test(b[d])&&(b.splice(d,1),d--);return b},s=function(a,b){var c=r(a);return-1!==c.indexOf(b)},t=function(a,b){var c,d,e;if(-1!==a.text().toLowerCase().indexOf(b.toLowerCase()))return!0;for(c=a.children(),e=c.length,d=0;e>d;d++)if(-1!==c.eq(d).text().toLowerCase().indexOf(b.toLowerCase()))return!0;return!1},u=angular.element,v=angular.equals,w=angular.copy,x=angular.extend,y=angular.module("nya.bootstrap.select",[]);y.provider("nyaBsConfig",function(){var a=null,b={"en-us":{defaultNoneSelection:"Nothing selected",noSearchResult:"NO SEARCH RESULT",numberItemSelected:"%d items selected",selectAll:"Select All",deselectAll:"Deselect All"}},c=w(b);this.setLocalizedText=function(a,b){if(!a)throw new Error("localeId must be a string formatted as languageId-countryId");c[a]||(c[a]={}),c[a]=x(c[a],b)},this.useLocale=function(b){a=b},this.$get=["$locale",function(d){var e;return e=a?c[a]:c[d.id],e||(e=b["en-us"]),e}]}),y.controller("nyaBsSelectCtrl",function(){var a=this;a.keyIdentifier=null,a.valueIdentifier=null,a.isMultiple=!1,a.onCollectionChange=function(){},a.setId=function(b){a.id=b||"id#"+Math.floor(1e4*Math.random())}}),y.directive("nyaBsSelect",["$parse","$document","$timeout","$compile","nyaBsConfig",function(a,b,c,d,e){var f="Nothing selected",g='<button class="btn btn-default dropdown-toggle" type="button"><span class="pull-left filter-option"></span><span class="pull-left special-title"></span>&nbsp;<span class="caret"></span></button>',h='<div class="dropdown-menu open"></div>',j='<div class="bs-searchbox"><input type="text" class="form-control"></div>',k='<ul class="dropdown-menu inner"></ul>',l='<li class="no-search-result"><span>NO SEARCH RESULT</span></li>',m='<div class="bs-actionsbox"><div class="btn-group btn-group-sm btn-block"><button class="actions-btn bs-select-all btn btn-default">SELECT ALL</button><button class="actions-btn bs-deselect-all btn btn-default">DESELECT ALL</button></div></div>';return{restrict:"ECA",require:["ngModel","nyaBsSelect"],controller:"nyaBsSelectCtrl",compile:function(n,x){n.addClass("btn-group");var y,z,A,B,C,D,E,F,G=function(a){var b;return b=x.titleTpl?u(x.titleTpl):x.title?document.createTextNode(x.title):L.defaultNoneSelectionTpl?u(L.defaultNoneSelectionTpl):L.defaultNoneSelection?document.createTextNode(L.defaultNoneSelection):document.createTextNode(f),a&&(x.titleTpl||L.defaultNoneSelectionTpl)?d(b)(a):b},H=n.children(),I=u(g),J=u(h),K=u(k),L=e,M="undefined"!=typeof x.multiple;for(B=r(n[0]),B.forEach(function(a){/btn-(?:primary|info|success|warning|danger|inverse)/.test(a)&&(n.removeClass(a),I.removeClass("btn-default"),I.addClass(a)),/btn-(?:lg|sm|xs)/.test(a)&&(n.removeClass(a),I.addClass(a))}),K.append(H),C=H.length,D=0;C>D;D++)E=H.eq(D),(E.hasClass("nya-bs-option")||E.attr("nya-bs-option"))&&(E.find("a").attr("tabindex","0"),F=E.attr("value"),angular.isString(F)&&""!==F&&(E.attr("data-value",F),E.removeAttr("value")));return"true"===x.liveSearch&&(y=u(j),x.noSearchTitle?l=l.replace("NO SEARCH RESULT",x.noSearchTitle):x.noSearchTitleTpl?l=l.replace("NO SEARCH RESULT",x.noSearchTitleTpl):L.noSearchResultTpl?l=l.replace("NO SEARCH RESULT",L.noSearchResultTpl):L.noSearchResult&&(l=l.replace("NO SEARCH RESULT",L.noSearchResult)),z=u(l),J.append(y),K.append(z)),"true"===x.actionsBox&&M&&(L.selectAllTpl?m=m.replace("SELECT ALL",L.selectAllTpl):L.selectAll&&(m=m.replace("SELECT ALL",L.selectAll)),L.deselectAllTpl?m=m.replace("DESELECT 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a,b,c=M.find("li"),d=c.length;for(b=0;d>b;b++)if(a=c.eq(b),a.hasClass("nya-bs-option")||a.attr("nya-bs-option")){B=a[0].clientHeight;break}if(/\d+/.test(g.size)){var e=parseInt(g.size,10);M.css("max-height",e*B+"px"),M.css("overflow-y","auto")}}var B,C,D,E=h[0],F=h[1],G=!1,H=a(F.valueExp),I="undefined"!=typeof g.multiple,J=u(f[0].querySelector(".dropdown-toggle")),K=J.next(),M=u(K[0].querySelector(".dropdown-menu.inner")),N=u(K[0].querySelector(".bs-searchbox")),O=u(M[0].querySelector(".no-search-result")),P=u(K[0].querySelector(".bs-actionsbox"));F.valueExp&&(D=function(a,b){return H(a,b)}),F.setId(f.attr("id")),I&&(F.isMultiple=!0,E.$isEmpty=function(a){return!a||0===a.length}),"undefined"!=typeof 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Q=function(a){null===q(a.target,f.parent()[0],f[0])&&(f.hasClass("open")&&f.triggerHandler("blur"),f.removeClass("open"))};b.on("click",Q),J.on("blur",function(){f.hasClass("open")||f.triggerHandler("blur")}),J.on("click",function(){var a;f.toggleClass("open"),f.hasClass("open")&&"undefined"==typeof B&&A(),"true"===g.liveSearch&&f.hasClass("open")?(N.children().eq(0)[0].focus(),a=l(!0),a&&(M.children().removeClass("active"),u(a).addClass("active"))):f.hasClass("open")&&(a=l(!0),a&&k(a))}),"true"===g.actionsBox&&I&&(P.find("button").eq(0).on("click",function(){n(!0)}),P.find("button").eq(1).on("click",function(){n(!1)})),"true"===g.liveSearch&&N.children().on("input",function(){var a,b,c,d=N.children().val(),e=0,f=M.children(),g=f.length;if(d){for(a=0;g>a;a++)b=f.eq(a),b.hasClass("nya-bs-option")&&(t(b.find("a"),d)?(b.removeClass("not-match"),e++):b.addClass("not-match"));0===e?O.addClass("show"):O.removeClass("show")}else{for(a=0;g>a;a++)b=f.eq(a),b.hasClass("nya-bs-option")&&b.removeClass("not-match");O.removeClass("show")}c=l(!0),c&&(f.removeClass("active"),u(c).addClass("active"))}),E.$render=function(){var a,b,c=E.$modelValue,d=M.children(),e=d.length;if("undefined"==typeof c)for(a=0;e>a;a++)d.eq(a).hasClass("nya-bs-option")&&d.eq(a).removeClass("selected");else for(a=0;e>a;a++)d.eq(a).hasClass("nya-bs-option")&&(b=x(d.eq(a)),I?o(c,b)?d.eq(a).addClass("selected"):d.eq(a).removeClass("selected"):v(c,b)?d.eq(a).addClass("selected"):d.eq(a).removeClass("selected"));z()},f.on("keydown",function(a){var b=a.keyCode;if(27===b||13===b||38===b||40===b){if(a.preventDefault(),G)return void a.stopPropagation();var c,d,e,h,i=q(a.target,f[0],J[0]);"true"===g.liveSearch?d=q(a.target,f[0],N[0]):c=q(a.target,f[0],K[0]),i?13!==b&&38!==b&&40!==b||f.hasClass("open")||(a.stopPropagation(),f.addClass("open"),"undefined"==typeof B&&A(),"true"===g.liveSearch?(N.children().eq(0)[0].focus(),h=l(!0),h&&(M.children().removeClass("active"),u(h).addClass("active"))):(h=l(!0),h&&k(h))):c?27===b?(J[0].focus(),f.hasClass("open")&&f.triggerHandler("blur"),f.removeClass("open"),a.stopPropagation()):38===b?(a.stopPropagation(),h=m(a.target.parentNode,"previousSibling"),h?k(h):(h=l(!1),h&&k(h))):40===b?(a.stopPropagation(),h=m(a.target.parentNode,"nextSibling"),h?k(h):(h=l(!0),h&&k(h))):13===b&&(a.stopPropagation(),e=u(a.target.parentNode),e.hasClass("nya-bs-option")&&(r(e),I||J[0].focus())):d&&(27===b?(J[0].focus(),f.removeClass("open"),a.stopPropagation()):38===b?(a.stopPropagation(),e=j(),e&&(h=m(e[0],"previousSibling"),h?(e.removeClass("active"),u(h).addClass("active")):(h=l(!1),h&&(e.removeClass("active"),u(h).addClass("active"))))):40===b?(a.stopPropagation(),e=j(),e&&(h=m(e[0],"nextSibling"),h?(e.removeClass("active"),u(h).addClass("active")):(h=l(!0),h&&(e.removeClass("active"),u(h).addClass("active"))))):13===b&&(e=j(),e&&(r(e),I||J[0].focus())))}}),e.$on("$destroy",function(){M.off(),J.off(),N.off&&N.off(),b.off("click",Q)})}}}}]),y.directive("nyaBsOption",["$parse",function(a){var b=/^\s*(?:([\$\w][\$\w]*)|(?:\(\s*([\$\w][\$\w]*)\s*,\s*([\$\w][\$\w]*)\s*\)))\s+in\s+([\s\S]+?)(?:\s+group\s+by\s+([\s\S]+?))?(?:\s+track\s+by\s+([\s\S]+?))?\s*$/;return{restrict:"A",transclude:"element",priority:1e3,terminal:!0,require:["^nyaBsSelect","^ngModel"],compile:function(c,i){var j=i.nyaBsOption,p=document.createComment(" end nyaBsOption: "+j+" "),q=j.match(b);if(!q)throw new Error("invalid expression");var r,s,t,w,x,y=i.value,z=y?a(y):null,A=q[3]||q[1],B=q[2],C=q[4],D=q[5]?a(q[5]):null,E=q[6],F={$id:f},G={};return E?w=a(E):(r=function(a,b){return f(b)},s=function(a){return a}),function(a,b,c,f,i){function j(a){var c,f,j,w,y,z,C,D,F,G,J,L,M,N,O,P=b[0],Q=e(),R=[];if(x&&(L=[]),d(a))z=a,y=t||r;else{y=t||s,z=[];for(var S in a)a.hasOwnProperty(S)&&"$"!=S.charAt(0)&&z.push(S);z.sort()}for(C=z.length,D=new Array(C),c=0;C>c;c++)if(f=a===z?c:z[c],j=a[f],w=y(f,j,c),O={},B&&(O[B]=f),O[A]=j,R.push(O),x&&(G=x(f,j),-1===L.indexOf(G)&&G&&L.push(G)),K[w])F=K[w],delete K[w],x&&(F.group=G),F.key=f,F.value=j,Q[w]=F,D[c]=F;else{if(Q[w])throw D.forEach(function(a){a&&a.scope&&(K[a.id]=a)}),new Error("Duplicates in a select are not allowed. 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a,b,c,d=N.children().val(),e=0,f=M.children(),g=f.length;if(d){for(a=0;g>a;a++)b=f.eq(a),b.hasClass("nya-bs-option")&&(t(b.find("a"),d)?(b.removeClass("not-match"),e++):b.addClass("not-match"));0===e?O.addClass("show"):O.removeClass("show")}else{for(a=0;g>a;a++)b=f.eq(a),b.hasClass("nya-bs-option")&&b.removeClass("not-match");O.removeClass("show")}c=l(!0),c&&(f.removeClass("active"),u(c).addClass("active"))}),E.$render=function(){var a,b,c=E.$modelValue,d=M.children(),e=d.length;if("undefined"==typeof c)for(a=0;e>a;a++)d.eq(a).hasClass("nya-bs-option")&&d.eq(a).removeClass("selected");else for(a=0;e>a;a++)d.eq(a).hasClass("nya-bs-option")&&(b=x(d.eq(a)),I?o(c,b)?d.eq(a).addClass("selected"):d.eq(a).removeClass("selected"):v(c,b)?d.eq(a).addClass("selected"):d.eq(a).removeClass("selected"));z()},f.on("keydown",function(a){var b=a.keyCode;if(27===b||13===b||38===b||40===b){if(a.preventDefault(),G)return void a.stopPropagation();var c,d,e,h,i=q(a.target,f[0],J[0]);"true"===g.liveSearch?d=q(a.target,f[0],N[0]):c=q(a.target,f[0],K[0]),i?13!==b&&38!==b&&40!==b||f.hasClass("open")||(a.stopPropagation(),f.addClass("open"),"undefined"==typeof B&&A(),"true"===g.liveSearch?(N.children().eq(0)[0].focus(),h=l(!0),h&&(M.children().removeClass("active"),u(h).addClass("active"))):(h=l(!0),h&&k(h))):c?27===b?(J[0].focus(),f.hasClass("open")&&f.triggerHandler("blur"),f.removeClass("open"),a.stopPropagation()):38===b?(a.stopPropagation(),h=m(a.target.parentNode,"previousSibling"),h?k(h):(h=l(!1),h&&k(h))):40===b?(a.stopPropagation(),h=m(a.target.parentNode,"nextSibling"),h?k(h):(h=l(!0),h&&k(h))):13===b&&(a.stopPropagation(),e=u(a.target.parentNode),e.hasClass("nya-bs-option")&&(r(e),I||J[0].focus())):d&&(27===b?(J[0].focus(),f.removeClass("open"),a.stopPropagation()):38===b?(a.stopPropagation(),e=j(),e&&(h=m(e[0],"previousSibling"),h?(e.removeClass("active"),u(h).addClass("active")):(h=l(!1),h&&(e.removeClass("active"),u(h).addClass("active"))))):40===b?(a.stopPropagation(),e=j(),e&&(h=m(e[0],"nextSibling"),h?(e.removeClass("active"),u(h).addClass("active")):(h=l(!0),h&&(e.removeClass("active"),u(h).addClass("active"))))):13===b&&(e=j(),e&&(r(e),I||J[0].focus())))}}),e.$on("$destroy",function(){M.off(),J.off(),N.off&&N.off(),b.off("click",Q)})}}}}]),y.directive("nyaBsOption",["$parse",function(a){var b=/^\s*(?:([\$\w][\$\w]*)|(?:\(\s*([\$\w][\$\w]*)\s*,\s*([\$\w][\$\w]*)\s*\)))\s+in\s+([\s\S]+?)(?:\s+group\s+by\s+([\s\S]+?))?(?:\s+track\s+by\s+([\s\S]+?))?\s*$/;return{restrict:"A",transclude:"element",priority:1e3,terminal:!0,require:["^nyaBsSelect","^ngModel"],compile:function(c,i){var j=i.nyaBsOption,p=document.createComment(" end nyaBsOption: "+j+" "),q=j.match(b);if(!q)throw new Error("invalid expression");var r,s,t,w,x,y=i.value,z=y?a(y):null,A=q[3]||q[1],B=q[2],C=q[4],D=q[5]?a(q[5]):null,E=q[6],F={$id:f},G={};return E?w=a(E):(r=function(a,b){return f(b)},s=function(a){return a}),function(a,b,c,f,i){function j(a){var c,f,j,w,y,z,C,D,F,G,J,L,M,N,O,P=b[0],Q=e(),R=[];if(x&&(L=[]),d(a))z=a,y=t||r;else{y=t||s,z=[];for(var S in a)a.hasOwnProperty(S)&&"$"!=S.charAt(0)&&z.push(S);z.sort()}for(C=z.length,D=new Array(C),c=0;C>c;c++)if(f=a===z?c:z[c],j=a[f],w=y(f,j,c),O={},B&&(O[B]=f),O[A]=j,R.push(O),x&&(G=x(f,j),-1===L.indexOf(G)&&G&&L.push(G)),K[w])F=K[w],delete 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diff --git a/docs/dist/css/main.css b/docs/dist/css/main.css
index 98775d5..2210ede 100644
--- a/docs/dist/css/main.css
+++ b/docs/dist/css/main.css
@@ -1,5 +1,5 @@
 /**
- * @lordfriend/nya-bootstrap-select v2.1.8
+ * @lordfriend/nya-bootstrap-select v2.1.9
  * Copyright 2014 Nyasoft
  * Licensed under MIT license
  */
diff --git a/docs/dist/css/nya-bs-select.css b/docs/dist/css/nya-bs-select.css
index 9d1184f..953c263 100644
--- a/docs/dist/css/nya-bs-select.css
+++ b/docs/dist/css/nya-bs-select.css
@@ -1,5 +1,5 @@
 /**
- * @lordfriend/nya-bootstrap-select v2.1.8
+ * @lordfriend/nya-bootstrap-select v2.1.9
  * Copyright 2014 Nyasoft
  * Licensed under MIT license
  */
diff --git a/docs/dist/js/nya-bs-select.js b/docs/dist/js/nya-bs-select.js
index e8506fc..c4313d7 100644
--- a/docs/dist/js/nya-bs-select.js
+++ b/docs/dist/js/nya-bs-select.js
@@ -1,5 +1,5 @@
 /**
- * @lordfriend/nya-bootstrap-select v2.1.8
+ * @lordfriend/nya-bootstrap-select v2.1.9
  * Copyright 2014 Nyasoft
  * Licensed under MIT license
  */
@@ -431,8 +431,8 @@ nyaBsSelect.directive('nyaBsSelect', ['$parse', '$document', '$timeout', '$compi
 
   var ACTIONS_BOX = '<div class="bs-actionsbox">' +
     '<div class="btn-group btn-group-sm btn-block">' +
-    '<button class="actions-btn bs-select-all btn btn-default">SELECT ALL</button>' +
-    '<button class="actions-btn bs-deselect-all btn btn-default">DESELECT ALL</button>' +
+    '<button type="button" class="actions-btn bs-select-all btn btn-default">SELECT ALL</button>' +
+    '<button type="button" class="actions-btn bs-deselect-all btn btn-default">DESELECT ALL</button>' +
     '</div>' +
     '</div>';
 
diff --git a/package.json b/package.json
index f6c6a35..84c24fa 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@lordfriend/nya-bootstrap-select",
-  "version": "2.1.8",
+  "version": "2.1.9",
   "description": "An angular directive wraps bootstrap-select",
   "repository": {
     "type": "git",