/* @source http://purl.eligrey.com/github/classList.js/blob/master/classList.js*/
"use strict";if(typeof document!=="undefined"&&!("classList" in document.createElement("a"))){(function(a){var f="classList",d="prototype",e=(a.HTMLElement||a.Element)[d],g=Object;strTrim=String[d].trim||function(){return this.replace(/^\s+|\s+$/g,"")},arrIndexOf=Array[d].indexOf||function(k){for(var j=0,h=this.length;j<h;j++){if(j in this&&this[j]===k){return j}}return -1},DOMEx=function(h,i){this.name=h;this.code=DOMException[h];this.message=i},checkTokenAndGetIndex=function(i,h){if(h===""){throw new DOMEx("SYNTAX_ERR","An invalid or illegal string was specified")}if(/\s/.test(h)){throw new DOMEx("INVALID_CHARACTER_ERR","String contains an invalid character")}return arrIndexOf.call(i,h)},ClassList=function(m){var l=strTrim.call(m.className),k=l?l.split(/\s+/):[];for(var j=0,h=k.length;j<h;j++){this.push(k[j])}this._updateClassName=function(){m.className=this.toString()}},classListProto=ClassList[d]=[],classListGetter=function(){return new ClassList(this)};DOMEx[d]=Error[d];classListProto.item=function(h){return this[h]||null};classListProto.contains=function(h){h+="";return checkTokenAndGetIndex(this,h)!==-1};classListProto.add=function(h){h+="";if(checkTokenAndGetIndex(this,h)===-1){this.push(h);this._updateClassName()}};classListProto.remove=function(i){i+="";var h=checkTokenAndGetIndex(this,i);if(h!==-1){this.splice(h,1);this._updateClassName()}};classListProto.toggle=function(h){h+="";if(checkTokenAndGetIndex(this,h)===-1){this.add(h)}else{this.remove(h)}};classListProto.toString=function(){return this.join(" ")};if(g.defineProperty){var c={get:classListGetter,enumerable:true,configurable:true};try{g.defineProperty(e,f,c)}catch(b){if(b.number===-2146823252){c.enumerable=false;g.defineProperty(e,f,c)}}}else{if(g[d].__defineGetter__){e.__defineGetter__(f,classListGetter)}}}(self))};