<!--
var XmlHttp;
var url;
function requestData()
{
    if(window.ActiveXObject)
    {   
        XmlHttp=new ActiveXObject("Microsoft.XMLHTTP"); 
    }
    else if(window.XMLHttpRequest)
    {
        XmlHttp=new XMLHttpRequest();
    }
    url="../ajaxonline.aspx?timeStamp="+new Date().getTime()+"&url="+location.href;
    XmlHttp.open("GET",url,true);
    XmlHttp.send(null);
}
function Go()
{
    setInterval(requestData,45000);//45000毫秒查询一次
}
requestData();
Go();
//-->