function CreateXMLHttpRequest() 
    {
        var XMLHttp=false;
        try
        {
            XMLHttp=new ActiveXObject('Msxm12.XMLHttp');
            a=0
        }
        catch(e)
        {
            try
            {
                XMLHttp=new ActiveXObject('Microsoft.XMLHttp');
                a=0
            }
            catch(e)
            {
                try
                {
                    XMLHttp=new XMLHttpRequest();
                    a=1;
                }
                catch(e)
                {
                	XMLHttp = false;
                }
            }
         }
        return XMLHttp;
    }
    function gb2utf8(data){
    var glbEncode = [];
    gb2utf8_data = data;
    execScript("gb2utf8_data = MidB(gb2utf8_data, 1)", "VBScript");
    var t=escape(gb2utf8_data).replace(/%u/g,"").replace(/(.{2})(.{2})/g,"%$2%$1").replace(/%([A-Z].)%(.{2})/g,"@$1$2");
    t=t.split("@");
    var i=0,j=t.length,k;
    while(++i<j) {
        k=t[i].substring(0,4);
        if(!glbEncode[k]) {
            gb2utf8_char = eval("0x"+k);
            execScript("gb2utf8_char = Chr(gb2utf8_char)", "VBScript");
            glbEncode[k]=escape(gb2utf8_char).substring(1,6);
        }
        t[i]=glbEncode[k]+t[i].substring(4);
    }
    gb2utf8_data = gb2utf8_char = null;
    return unescape(t.join("%"));
}


        var XMLHttp=CreateXMLHttpRequest();
        XMLHttp.open('get','user_login.asp?'+new Date().getTime(),true);
        if (a==1){
        XMLHttp.overrideMimeType("text/html;charset=gb2312");
        }
        XMLHttp.onreadystatechange=function()
        {
            if(XMLHttp.readyState==4)
            {
            
                if(XMLHttp.status==200)
                {
                  if (a==1){
                  var pnum=XMLHttp.responseText;
                  }else{
                  var pnum=gb2utf8(XMLHttp.responseBody);
                  }
                  document.getElementById("login").innerHTML=pnum; 
                }
            }
        }
        XMLHttp.send(null);