function DoCallback(url,params){
	var pageUrl = url + "?callback=true&param=" +params;
	var xmlRequest = new ActiveXObject("Microsoft.XMLHTTP");
	xmlRequest.Open("POST",pageUrl,false);
	xmlRequest.setRequestHeader("Content-Type","application/x-www.form-urlencoded");
	xmlRequest.send(null);
	return xmlRequest;
	}