<!--
    
    // Inizializzo la classe per l'uso di Ajax
    function GetXmlHttpObject(handler)
    { 
        var objXmlHttp=null

        if (navigator.userAgent.indexOf("Opera")>=0)
        {
            alert("This example doesn't work in Opera") 
            return; 
        }
        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
        }
    } 
    
    function stateChanged() 
    { 
        if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
        { 
                document.getElementById("txtHint").innerHTML=xmlHttp.responseText 
        } 
    } 
    
-->