//来源统计
	 var xmlHttp;
	 function createXMLHttpRequest(){
	    if (window.XMLHttpRequest){
	   		xmlHttp=new XMLHttpRequest();
	     }else if(window.ActiveXObject){
	     	var versions = ['Microsoft.XMLHTTP', 'MSXML.XMLHTTP', 'Microsoft.XMLHTTP', 'Msxml2.XMLHTTP.7.0', 'Msxml2.XMLHTTP.6.0', 'Msxml2.XMLHTTP.5.0', 'Msxml2.XMLHTTP.4.0', 'MSXML2.XMLHTTP.3.0', 'MSXML2.XMLHTTP'];
	    	for(var i=0; i<versions.length; i++){
	    		try{
	    			xmlHttp = new ActiveXObject(versions[i]);
	    			if(xmlHttp){
	    				return xmlHttp;
	    			}
	    		}
	    		catch(e){}
	    	}
	   	}		
		return xmlHttp ;
	   } 
	//获取所有URL参数
	function GetUrlParms()    
	{
     	var args=new Object();   
     	var query=location.search.substring(1);//获取查询串   
     	var pairs=query.split("&");//在逗号处断开   
     	for(var    i=0;i<pairs.length;i++)   
     	{   
         	var pos=pairs[i].indexOf('=');//查找name=value   
            if(pos==-1)   continue;//如果没有找到就跳过   
            var argname=pairs[i].substring(0,pos);//提取name   
            var value=pairs[i].substring(pos+1);//提取value   
            args[argname]=unescape(value);//存为属性   
    	}
     	return args;
	}   
	//根据cookie key查找value  
	function getCookie(name){
       var strCookie=document.cookie;
       var arrCookie=strCookie.split("; ");
       for(var i=0;i<arrCookie.length;i++){
             var arr=arrCookie[i].split("=");
             if(arr[0]==name)return arr[1];
       }
       return "";
	}
	//写Cookie操作
	function setCookie(name,value,Months){
    	var exp  = new Date();  //获得当前时间
    	exp.setTime(exp.getTime() + Months*30*24*60*60*1000);  
    	document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();
	}
	 //OnLoad处理函数   
 	function cieOrUp(){
 	   var valueCookie;
 	   //判断cookie是否存在
	   valueCookie = getCookie("spread_name");		
 	   //cookie不存在
 	   if(valueCookie==null||valueCookie==""){
 	   		//获取Url参数 spreadid值
 	   		var args = new Object();
			args = GetUrlParms();
 
 	   		var spreadid = args["spreadid"]; //获取指定参数的值
 	   		//判断下是否有参数传递过来
 	   		if(spreadid!=null&&spreadid!="")
 	   		{
 	   			createXMLHttpRequest();
 	   			var url="http://tt.awarz.com/spread.do?method=UpdateSpread&spreadid="+spreadid;
   	   			xmlHttp.onreadystatechange = callbackFun; 			
       			xmlHttp.open("GET",url); 
       			xmlHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
  	   			xmlHttp.send(null);	
  	   		
  	   			//写Cookie操作
  	   			setCookie("spread_name","spread_name",3);
  	   			}
  	   	}
  	}
  	
  	 function callbackFun() {
	}