var xmlHttp;
function createXMLHttpRequest() {
 if (window.ActiveXObject) {
        //xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
        try
        {
        	xmlHttp = new ActiveXObject("MSXML2.ServerXMLHTTP.4.0");
        }
        catch(e)
        {
        	try
        	{
        		xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
        	}
	        catch(e)
	        {
	        	try
	        	{
	        		xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
	        	}
	        	catch(e)
	        	{
	        		alert("IE not surpport!");
	        	}
	        }
	      }
    }
    else if (window.XMLHttpRequest) {
        xmlHttp = new XMLHttpRequest();
    }
}

function sendText(param){          
     createXMLHttpRequest();
     var url="stat2.php" ;
     xmlHttp.onreadystatechange = function () {	};
     xmlHttp.open("POST",url,false);
	 xmlHttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");   
     //alert("aaaa" + param) ;
	 xmlHttp.send(param) ;
}

var url = document.location.href ;
var prev_url = document.referrer ;

var param = "url=" + url + "&prevUrl=" + prev_url ;
sendText(param) ;