// Ajax Functions

 function GetXmlHttpObject(handler)
  { 
        var objXmlHttp=null
        if (navigator.userAgent.indexOf("MSIE")>=0)
        { 
            var strName="Msxml2.XMLHTTP"
            if (navigator.appVersion.indexOf("MSIE 5.5")>=0)
            {
                strName="Microsoft.XMLHTTP"
            } 
            try
            { 
                objXmlHttp=new ActiveXObject(strName)
                objXmlHttp.onreadystatechange=handler 
                return objXmlHttp
            } 
            catch(e)
            { 
                alert("Error. Scripting for ActiveX might be disabled") 
                return 
            } 
        } 
        if (navigator.userAgent.indexOf("Mozilla")>=0)
            {
                objXmlHttp=new XMLHttpRequest()
                objXmlHttp.onload=handler
                objXmlHttp.onerror=handler 
                return objXmlHttp
            }
  }