function XHConn()
{
    var xmlhttp, bComplete = false;
    try { xmlhttp = new ActiveXObject("Msxml2.XMLHTTP"); }
    catch (e) { try { xmlhttp = new ActiveXObject("Microsoft.XMLHTTP"); }
    catch (e) { try { xmlhttp = new XMLHttpRequest(); }
    catch (e) { xmlhttp = false; }}}
    if (!xmlhttp) return null;
    this.connect = function(sURL, sMethod, sVars, fnDone)
    {
        if (!xmlhttp) return false;
        bComplete = false;
        sMethod = sMethod.toUpperCase();

        try {
            if (sMethod == "GET")
            {
                xmlhttp.open(sMethod, sURL+"?"+sVars, true);
                sVars = "";
            }
            else
            {
                xmlhttp.open(sMethod, sURL, true);
                xmlhttp.setRequestHeader("Method", "POST "+sURL+" HTTP/1.1");
                xmlhttp.setRequestHeader("Content-Type",
                    "application/x-www-form-urlencoded");
            }
            xmlhttp.onreadystatechange = function(){
                if (xmlhttp.readyState == 4 && !bComplete)
                {
                    bComplete = true;
                    fnDone(xmlhttp);
                }};
            xmlhttp.send(sVars);
        }
        catch(z) { return false; }
        return true;
    };
    return this;
}