var xmlHttp;
var typeIE = new Array(4);

typeIE[0] = "Msxml2.XMLHTTP.5.0";
typeIE[1] = "Msxml2.XMLHTTP.4.0";
typeIE[2] = "Msxml2.XMLHTTP";
typeIE[3] = "Microsoft.XMLHTTP";

function createXmlHttp()
{
	if(window.XMLHttpRequest)
	{
		xmlHttp = new XMLHttpRequest();
	}else if(window.ActiveXObject && !xmlHttp)
	{	
		for(var i=0;i<typeIE.length;i++)
		{
			try
			{
				xmlHttp = new ActiveXObject(typeIE[i]);
			}
			catch (e)
			{
				continue;
			}
			break;
		}
	}
}

var retUrl = document.referrer                     //用户上次访问的URL

createXmlHttp();

var url = "/mshf/record_log.jsp?retUrl=" + escape(retUrl) + "";

xmlHttp.open("post",url,true);

xmlHttp.send(null);