function setCookie(sName, sValue, nExpireDays)
	{
		var sCookie = sName+"="+unescape(sValue)+";";
		if (nExpireDays)
		{
			var oDate = new Date();
			oDate.setMilliseconds(oDate.getMilliseconds()+parseInt(nExpireDays)*24*3600*1000);
			sCookie += "expires="+oDate.toUTCString()+";domain=.a8.com;path=/";
		}
		document.cookie = sCookie;
	}	
	function getCookie(sName)
	{
		var aCookie = document.cookie.split("; ");
		for (var i=0; i < aCookie.length; i++)
		{
			var aCrumb = aCookie[i].split("=");
			if (sName == aCrumb[0])
			{
				return aCrumb.length>=2 ? unescape(aCrumb[1]) : "";
			}
		}
		return "";
	}
	var menudomain="http://"+ location.hostname +"/";
	function getQueryString(s)
	{
				
				var theurl=window.location.href;
				theurl=theurl.toLowerCase();
				var index1=theurl.indexOf(s+"=");
				if(index1==-1) return "0";	    
				if(theurl.indexOf(menudomain)==-1 ||  theurl.indexOf("style=")>-1) return "0";			
				var index2=theurl.indexOf("&",index1);
				if(index2==-1) index2=theurl.length;
			
				if(theurl.substring(index1+s.length+1,index2)==null || theurl.substring(index1+s.length+1,index2)=="")			
				  return "0";
				else
				  return theurl.substring(index1+s.length+1,index2);

	}	
	//�õ�����ҳ��
	function getRefererc()
	{
			return document.referrer;
	}
	function callCount(channel_id)
	{		
		var uid = getQueryString('uid');
		if(parseInt(uid)>0)
		{
			setCookie("ck_uid",uid,1);
		}
		else
		{
			var ckid=getCookie("ck_uid");
		if(parseInt(ckid)>0)
				uid=ckid;
		}
		var sid = getQueryString('sid');
		if(parseInt(sid)>0)
		{
			setCookie("ck_sid",sid,1);
		}
		else
		{
			var cksid=getCookie("ck_sid");
		if(parseInt(cksid)>0)
				sid=cksid;
		}
		var frid = getQueryString('frid');
		if(parseInt(frid)>0)
		{
			setCookie("ck_frid",frid,1);
		}
		else
		{
			var ckfrid=getCookie("ck_frid");
		if(parseInt(ckfrid)>0)
				frid=ckfrid;
		}		
		var path = "http://count.a8.com/stat.php?chid="+channel_id+"&uid=" + uid+"&frid="+frid+"&sid=" + sid+"&refer="+escape(getRefererc());
		document.write("<script src=" + path + "><\/script>");
	}