var IE = '\v' == 'v';

function GetXmlHttpObject(handler) 
{
    var objXmlHttp = null;

    if (IE) 
    {

        // alert('Microsoft');
        // Microsoft
        objXmlHttp = GetMSXmlHttp();
        if (objXmlHttp != null) 
        {
            objXmlHttp.onreadystatechange = handler;
        }

        //alert(objXmlHttp);
        
        
    }
    else 
    {
        // Mozilla | Netscape | Safari
        // alert('Mozilla | Netscape | Safari');

        objXmlHttp = new XMLHttpRequest();
        if (objXmlHttp != null) 
        {
            objXmlHttp.onload = handler;
            objXmlHttp.onerror = handler;
        }

        //alert(objXmlHttp);

        
    }
    return objXmlHttp;
}

function GetMSXmlHttp() 
{
    var xmlHttp = null;
    var clsids = ["Msxml2.XMLHTTP.6.0", "Msxml2.XMLHTTP.5.0",
                 "Msxml2.XMLHTTP.4.0", "Msxml2.XMLHTTP.3.0",
                 "Msxml2.XMLHTTP.2.6", "Microsoft.XMLHTTP.1.0",
                 "Microsoft.XMLHTTP.1", "Microsoft.XMLHTTP"];                 
                 
    for (var i = 0; i < clsids.length && xmlHttp == null; i++) {
        xmlHttp = CreateXmlHttp(clsids[i]);
    }
    return xmlHttp;
}

function CreateXmlHttp(clsid) {
    var xmlHttp = null;
    try {
        xmlHttp = new ActiveXObject(clsid);
        lastclsid = clsid;
        return xmlHttp;
    }
    catch (e) { }
}

function SendXmlHttpRequest(xmlhttp, url) {
    xmlhttp.open('GET', url, true);
    xmlhttp.send(null);
}