Hi All
Here is my file javascrip
--------------------------
var oPopup = window.createPopup();
            function ConratulationAdd()
            {
                var oPopBody = oPopup.document.body;
                oPopBody.style.backgroundColor = "lightyellow";
                oPopBody.style.border = "solid black 1px";
                oPopBody.innerHTML = "Thanks you ! Your Cart have been add To Cart.";
                oPopup.show(event.clientX-50, event.clientY-60, 200, 50, document.body);
            }

            function hamxuly(objAjaxTest)
            {
            //alert(objAjaxTest.DOMDocument)


            var rootNode = objAjaxTest.SelectSingleNode('Products');
            var products = rootNode.childNodes;
            var str ="<table border='0'>";
            str=str + "<tr><td width='200'> DESIGNATION</td><td width='30'> QTE</td><td width='30'>TOTAL</td></tr>"
            var mQuanlity=0;
            var mTotal=0;
            for ( var j = 0 ; j < products.length ; j++ )
            {
                str=str + "<tr>"
                var product = products[j] ;
                var ProductID = (product.attributes.getNamedItem('ProductID')!=nul l)?product.attributes.getNamedItem('ProductID').va lue:"" ;
                var ProductName = (product.attributes.getNamedItem('ProductName')!=n ull)?product.attributes.getNamedItem('ProductName' ).value:"" ;
                var Quanlity = (product.attributes.getNamedItem('Quanlity')!=null )?product.attributes.getNamedItem('Quanlity').valu e:"" ;
                var Total = (product.attributes.getNamedItem('Total')!=null)?p roduct.attributes.getNamedItem('Total').value:"" ;
                mQuanlity= mQuanlity + Number(Quanlity);
                mTotal=mTotal + Number(Total);
                str=str + "<td width='200'>" + "" + ProductName + "" + "</td>"
                str=str + "<td width='30' align='center'>" + "" + Quanlity + "" + "</td>"
                str=str + "<td width='30' align='center'>" + "" + Total + "" + "</td>"
                str=str + "</tr>"
             }
            str=str + "<tr><td align='right'>" + ""+" Total" + "</td><td width='30' align='center'>" + "" + mQuanlity + "" + "</td><td width='30'align='center'>" + "" + mTotal + "" + "</td></tr>"
            str= str + "</table>"
            document.getElementById("myBag").innerHTML=str

            }

//--------------------
var AjaxTest = function()
{

}

AjaxTest.prototype.GetHttpRequest = function()
{
    //alert("Thanks you ! To continue please press ok"); dua cai alert nao vao thi ok

    ConratulationAdd();


    if ( window.XMLHttpRequest )
    { // Gecko
        return new XMLHttpRequest() ;
    }
    else if ( window.ActiveXObject ) // IE
    {
            try{
                return new ActiveXObject("MsXml2.XmlHttp") ;

            }
            catch(e)
            {
            return new ActiveXObject("Microsoft.XMLHTTP") ;
            }
    }

}

//---------------------
AjaxTest.prototype.GoiAjaxTest_Text = function(urlToCall,hamXuLyKetqua)
{


    var objAjaxTest = this ;
    var bAsync = ( typeof(hamXuLyKetqua) == 'function' ) ;
    var oXmlHttp = this.GetHttpRequest();
    oXmlHttp.open( "GET", urlToCall, bAsync ) ;
    if ( bAsync )
    {
        oXmlHttp.onreadystatechange = function()
        {

            if ( oXmlHttp.readyState == 4 )
            {
                objAjaxTest.DOMDocument = oXmlHttp.responseXML;

                if ( oXmlHttp.status == 200 || oXmlHttp.status == 304 )
                  {


                    hamXuLyKetqua(objAjaxTest) ;
                  }
                else
                    alert( 'XML request error: ' + oXmlHttp.statusText + ' (' + oXmlHttp.status + ')' ) ;
             }
        }
    }
    oXmlHttp.send(null) ;
    //alert(

}

AjaxTest.prototype.SelectSingleNode = function( xpath )
{

    if ( document.all )
    {
        // IE

        return this.DOMDocument.selectSingleNode( xpath );
    }
    else // Gecko
    {
        var xPathResult = this.DOMDocument.evaluate( xpath, this.DOMDocument,
                this.DOMDocument.createNSResolver(this.DOMDocument .documentElement), 9, null);

        if ( xPathResult && xPathResult.singleNodeValue )
            return xPathResult.singleNodeValue ;
        else
            return null ;
    }
    oPopup.hide();
}
-------------------------------
Here is my javascrip at my code :
function ajax_do(url) {

                    url="<%= Page.ResolveUrl("~/DesktopModules/Asieco_ProductsView/AddData.aspx") %>"+url;

                    /*
                    var jsel = document.createElement('script');
                    jsel.type = "text/javascript";
                    jsel.src = url;
                    */
                   var ajaxtest=new AjaxTest();
                   ajaxtest.GoiAjaxTest_Text(url,hamxuly);

            }
function doAdd(ProductID)
            {
                var sGetText;
                sGetText="txt" + ProductID;
                var intQuanlity=document.getElementById("txt"+ProductI D).value;
                if (isNaN(intQuanlity))
                {
                    alert("You have to input number");
                    return;
                }
                ajax_do("?id="+ProductID+"&txt"+ProductID+"="+intQ uanlity);
            }
when function "doadd" run. at my site( asieco.net) then it's Error : XML request error.
But this site can run at my local machine well
Please help me fix this error

Thanks
phuong