var xmlHttphead;
        function createXMLHttpheadRequest()
        {
            if(window.ActiveXObject)
            {
                xmlHttphead = new ActiveXObject("Microsoft.XMLHTTP");
            }
            else if(window.XMLHttpRequest)
            {
                xmlHttphead = new XMLHttpRequest();
            }
        }

//function GetheadInfo()
//{
//D:\wwwroot\mydoc\JSZPW\services\index\GetTopRight.ashx
    var url= "services/index/Gethead.ashx?rnd="+parseInt(Math.random()*10000)+1;
  //  alert(url);
    createXMLHttpheadRequest();
    xmlHttphead.open("GET",url,true);
    xmlHttphead.onreadystatechange=showheadResult;
    xmlHttphead.send(null);
//}


   function showheadResult()
        {
           if(xmlHttphead.readyState==1)
            { 
            }
            if(xmlHttphead.readyState==4)
            {
         //   alert(xmlHttp.status);
                if(xmlHttphead.status==200)
                {
                var rs=xmlHttphead.responseText;
          //    document.write(rs);
                document.getElementById("div_head").innerHTML=rs;
                }
                else
                {
                  document.getElementById("div_head").innerHTML="加载失败";
                }
            }
        }