(function(window,document){if(window.Sleuth!==undefined){return}if(!window.btoa){var base64chars="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/".split("");window.btoa=function(data){var result="";var padding="";var padCount=data.length%3;if(padCount>0){for(;padCount<3;++padCount){padding+="=";data+="\x00"}}for(var i=0;i<data.length;i+=3){var next=(data.charCodeAt(i)<<16)+(data.charCodeAt(i+1)<<8)+data.charCodeAt(i+2);next=[next>>>18&63,next>>>12&63,next>>>6&63,next&63];result+=base64chars[next[0]]+base64chars[next[1]]+base64chars[next[2]]+base64chars[next[3]]}return result.substring(0,result.length-padding.length)+padding}}var encodeObject=function(data){var query=[];for(var key in data){query.push(encodeURIComponent(key)+"="+encodeURIComponent(data[key]))}return query.join("&")};var post=function(url,data,tags){var req=new XMLHttpRequest;url+="?"+encodeObject(tags);req.open("POST",url,true);req.send(JSON.stringify(data))};var drop=function(url,data,tags){tags.d=window.btoa(JSON.stringify(data));tags.n=(new Date).getTime();tags.r=Math.random()*99999999;url+="?"+encodeObject(tags);document.write("<sc"+'ript type="text/javascript" src="'+url+'"></scri'+"pt>")};var Sleuth=function(){this.version="0.1.0";this.config={url:"/track",unload:true,ajax:true,performance:true,useLocalStorage:true};this.tags={};this.data={}};Sleuth.prototype.init=function(options){for(var key in options){this.config[key]=options[key]}};Sleuth.prototype.captureWindowPerformance=function(){if(this.config.performance&&window.performance!==undefined){if(window.performance.timing!==undefined){this.data.timing=window.performance.timing}if(window.performance.navigation!==undefined){this.data.navigation={redirectCount:window.performance.navigation.redirectCount,type:window.performance.navigation.type}}}};Sleuth.prototype.onunload=function(){if(this.config.performance){this.captureWindowPerformance()}if(this.config.unload){this.sendAllData()}};Sleuth.prototype.sendData=function(data){if(this.config.ajax){post(this.config.url,data,this.tags)}else{drop(this.config.url,data,this.tags)}};Sleuth.prototype.sendAllData=function(){var toSend=this.data;this.data={};if(this.config.useLocalStorage){for(var key in window.localStorage){if(key.indexOf("Sleuth:")===0){var value=window.localStorage.getItem(key);window.localStorage.removeItem(key);key=key.substring(6);toSend[key]=value}}}this.sendData(this.config.url,toSend,this.tags)};Sleuth.prototype.track=function(key,value){if(this.config.useLocalStorage&&window.localStorage!==undefined){window.localStorage.setItem("Sleuth:"+key,value)}else{this.data[key]=value}};Sleuth.prototype.tag=function(key,value){this.tags[key]=value};window.Sleuth=new Sleuth;window.onbeforeunload=window.Sleuth.onunload.bind(window.Sleuth)})(window,document);