function	getQueryString(queryStringName){
	var	returnValue="";
	var	URLString=new	String(document.location);
	var	serachLocation=-1;
	var	queryStringLength=queryStringName.length;
	do	{
		serachLocation=URLString.indexOf(queryStringName+"\=");
		if	(serachLocation!=-1) {
			if	((URLString.charAt(serachLocation-1)=='?')	||	(URLString.charAt(serachLocation-1)=='&')) {
				URLString=URLString.substr(serachLocation);
				break;
			}
			URLString=URLString.substr(serachLocation+queryStringLength+1);
		}
	}
	while	(serachLocation!=-1)
	if	(serachLocation!=-1){
		var	seperatorLocation=URLString.indexOf("&");
		if	(seperatorLocation==-1)	{
			returnValue=URLString.substr(queryStringLength+1);
		}
		else{
			returnValue=URLString.substring(queryStringLength+1,seperatorLocation);
		}
	}
	returnValue   =   returnValue.replace(/#/g,'');
	return	returnValue;
}

function readcookie(name)
{
    var mycookie = document.cookie;
    var start1 = mycookie.indexOf(name + "=");
    if (start1== -1)
        return null;
    else
    {
        start=mycookie.indexOf("=",start1) + 1;
        var end = mycookie.indexOf(";",start);
        if (end==-1)
        {
            end=mycookie.length;
        }
        return unescape(mycookie.substring(start,end));
    }
}

var agent_id=getQueryString("agent_id");
var dateobj=new Date();                //获取当前时间
var expireDays=0.5*24*3600*1000;    //将date设置为n天以后的时间
dateobj.setTime(dateobj.getTime()+expireDays);
document.cookie="agent_id="+agent_id+"; expire="+dateobj.toGMTString()+";path=/"; //agent_id

var from_url = document.referrer;
var domain = location.host;
if (domain=='') {
	 from_url = '直接输入网址';
}
var click_count = readcookie('__click__');
if (click_count=='' || click_count==null) {
	click_count =0;
}
var dateclick=new Date();                //获取当前时间
var expireDays=3600*1000;    //将date设置为n天以后的时间
dateclick.setTime(dateclick.getTime()+expireDays);
document.cookie="__click__="+parseInt(click_count+1)+"; expire="+dateclick.toGMTString()+";path=/";
if (click_count == 0) {
	document.cookie="__from_url__="+from_url+"; expire="+dateclick.toGMTString()+";path=/";
}