function GetXmlHttpObject()
{
    var objXMLHttp = null;
    
    if (window.XMLHttpRequest){
        try{
            objXMLHttp = new XMLHttpRequest();
        }catch (e){
            objXMLHttp = false;
        }
    }else if (window.createRequest){
        try{
            objXMLHttp = new window.createRequest();
        }catch (e){
            objXMLHttp = false;
        }
    }else if (window.ActiveXObject){
        try {
            objXMLHttp = new ActiveXObject("Msxml2.XMLHTTP");
        }catch (e){
            try {
                objXMLHttp = new ActiveXObject("Microsoft.XMLHTTP");
            }catch (e){
                objXMLHttp = false;
            }
        }
    }
    
    return objXMLHttp;
}