var jsVer = -1;

function getBrowser(obj) {
    var b = new Array("unknown", "unknown", "unknown", "unknown");

    (isEmpty(obj) ? brs = navigator.userAgent.toLowerCase() : brs = obj);

    if (brs.search(/omniweb[\/\s]v?(\d+([\.-]\d)*)/) != -1) {
        // Omniweb
        b[0] = "omniweb";
        b[1] = brs.match(/omniweb[\/\s]v?(\d+([\.-]\d)*)/)[1];
        (b[1] > 4.5 ? b[2] = "khtml" : b[2] = "omniweb");
        (brs.search(/omniweb[\/\s]((\d+([\.-]\d)*)-)?v(\d+([\.-]\d)*)/) == -1 ? b[3] = brs.match(/omniweb[\/\s](\d+([\.-]\d)*)/)[1] : b[3] = brs.match(/omniweb[\/\s]((\d+([\.-]\d)*)-)?v(\d+([\.-]\d)*)/)[4]);
        return b;
    } else if (brs.search(/opera[\/\s](\d+(\.?\d)*)/) != -1) {
        // Opera
        b[0] = "opera";
        b[1] = brs.match(/opera[\/\s](\d+(\.?\d)*)/)[1];
        b[2] = "opera";
        b[3] = b[1];
        return b;
    } else if (brs.search(/crazy\s?browser\s(\d+(\.?\d)*)/) != -1) {
        // Crazy Browser
        b[0] = "crazy";
        b[1] = brs.match(/crazy\s?browser\s(\d+(\.?\d)*)/)[1];
        b[2] = "msie";
        b[3] = getMSIEVersion();
        return b;
    } else if (brs.search(/myie2/) != -1) {
        // MyIE2
        b[0] = "myie2";
        b[2] = "msie";
        b[3] = brs.match(/msie\s(\d+(\.?\d)*)/)[1];
        return b;
    } else if (brs.search(/netcaptor/) != -1) {
        // NetCaptor
        b[0] = "netcaptor";
        b[1] = brs.match(/netcaptor\s(\d+(\.?\d)*)/)[1];
        b[2] = "msie";
        b[3] = getMSIEVersion();
        return b;
    } else if (brs.search(/avant\sbrowser/) != -1) {
        // Avant Browser
        b[0] = "avantbrowser";
        b[2] = "msie";
        b[3] = getMSIEVersion();
        return b;
    } else if (brs.search(/msn\s(\d+(\.?\d)*)/) != -1) {
        // MSN Explorer
        b[0] = "msn";
        b[1] = brs.match(/msn\s(\d+(\.?\d)*)/)[1];
        b[2] = "msie";
        b[3] = getMSIEVersion();
        return b;
    } else if (brs.search(/msie\s(\d+(\.?\d)*)/) != -1) {
        // MS Internet Explorer
        b[0] = "msie";
        b[1] = getMSIEVersion();
        b[2] = "msie";
        b[3] = b[1];
        return b;
    } else if (brs.search(/powermarks\/(\d+(\.?\d)*)/) != -1) {
        // PowerMarks
        b[0] = "powermarks";
        b[1] = brs.match(/powermarks\/(\d+(\.?\d)*)/)[1];
        b[2] = "msie";
        try {
            b[3] = getMSIEVersion();
        } catch (e) { }
        return b;
    } else if (brs.search(/konqueror[\/\s](\d+([\.-]\d)*)/) != -1) {
        // Konqueror
        b[0] = "konqueror";
        b[1] = brs.match(/konqueror[\/\s](\d+([\.-]\d)*)/)[1];
        b[2] = "khtml";
        return b;
    } else if (brs.search(/safari\/(\d)*/) != -1) {
        // Safari
        b[0] = "safari";
        b[1] = brs.match(/safari\/(\d+(\.?\d*)*)/)[1];
        b[2] = "khtml";
        b[3] = brs.match(/applewebkit\/(\d+(\.?\d*)*)/)[1];
        return b;
    } else if (brs.search(/zyborg/) != -1) {
        // Zyborg (SSD)
        b[0] = "zyborg";
        b[1] = brs.match(/zyborg\/(\d+(\.?\d)*)/)[1];
        b[2] = "robot";
        b[3] = "-1"
        return b;
    } else if (brs.search(/netscape6[\/\s](\d+([\.-]\d)*)/) != -1) {
        // Netscape 6.x
        b[0] = "netscape";
        b[1] = brs.match(/netscape6[\/\s](\d+([\.-]\d)*)/)[1];
        b[2] = "gecko";
        b[3] = getGeckoVersion();
        return b;
    } else if (brs.search(/netscape\/(7\.\d*)/) != -1) {
        // Netscape 7.x
        b[0] = "netscape";
        b[1] = brs.match(/netscape\/(7\.\d*)/)[1];
        b[2] = "gecko";
        b[3] = getGeckoVersion();
        return b;
    } else if (brs.search(/galeon[\/\s](\d+([\.-]\d)*)/) != -1) {
        // Galeon
        b[0] = "galeon";
        b[1] = brs.match(/galeon[\/\s](\d+([\.-]\d)*)/)[1];
        b[2] = "gecko";
        b[3] = getGeckoVersion();
        return b;
    } else if (brs.search(/nautilus[\/\s](\d+([\.-]\d)*)/) != -1) {
        // Nautilus
        b[0] = "nautilus";
        b[1] = brs.match(/nautilus[\/\s](\d+([\.-]\d)*)/)[1];
        b[2] = "gecko";
        b[3] = getGeckoVersion();
        return b;
    } else if (brs.search(/firefox[\/\s](\d+([\.-]\d)*)/) != -1) {
        // Firefox
        b[0] = "firefox";
        b[1] = brs.match(/firefox[\/\s](\d+([\.-]\d)*)/)[1];
        b[2] = "gecko";
        b[3] = getGeckoVersion();
        return b;
    } else if (brs.search(/k-meleon[\/\s](\d+([\.-]\d)*)/) != -1) {
        // K-Meleon
        b[0] = "kmeleon";
        b[1] = brs.match(/k-meleon[\/\s](\d+([\.-]\d)*)/)[1];
        b[2] = "gecko";
        b[3] = getGeckoVersion();
        return b;
    } else if (brs.search(/playstation\s3/) != -1) {
        // Playstation 3
        b[0] = "netfront";
        b[1] = "2.81"; // Taken from the Wikipedia article
        b[2] = "playstation3"
        b[3] = brs.match(/playstation\s3;\s(\d+\.\d+)/)[1];
        return b;
    } else if (brs.search(/firebird[\/\s](\d+([\.-]\d)*)/) != -1) {
        // Firebird
        b[0] = "firebird";
        b[1] = brs.match(/firebird[\/\s](\d+([\.-]\d)*)/)[1];
        b[2] = "gecko";
        b[3] = getGeckoVersion();
        return b;
    } else if (brs.search(/phoenix[\/\s](\d+([\.-]\d)*)/) != -1) {
        // Phoenix
        b[0] = "phoenix";
        b[1] = brs.match(/phoenix[\/\s](\d+([\.-]\d)*)/)[1];
        b[2] = "gecko";
        b[3] = getGeckoVersion();
        return b;
    } else if (brs.search(/camino[\/\s](\d+([\.-]\d)*)/) != -1) {
        // Camino
        b[0] = "camino";
        b[1] = brs.match(/camino[\/\s](\d+([\.-]\d)*)/)[1];
        b[2] = "gecko";
        b[3] = getGeckoVersion();
        return b;
    } else if (brs.search(/epiphany[\/\s](\d+([\.-]\d)*)/) != -1) {
        // Epiphany
        b[0] = "epiphany";
        b[1] = brs.match(/epiphany[\/\s](\d+([\.-]\d)*)/)[1];
        b[2] = "gecko";
        b[3] = getGeckoVersion();
        return b;
    } else if (brs.search(/chimera[\/\s](\d+([\.-]\d)*)/) != -1) {
        // Chimera
        b[0] = "chimera";
        b[1] = brs.match(/chimera[\/\s](\d+([\.-]\d)*)/)[1];
        b[2] = "gecko";
        b[3] = getGeckoVersion();
        return b;
    } else if (brs.search(/icab[\s\/]?(\d+(\.?\d)*)/) != -1) {
        // iCab
        b[0] = "icab";
        b[1] = brs.match(/icab[\s\/]?(\d+(\.?\d)*)/)[1];
        b[2] = "icab";
        b[3] = b[1];
        return b;
    } else if (brs.search(/netfront\/(\d+([\._]\d)*)/) != -1) {
        // NetFront
        b[0] = "netfront";
        b[1] = brs.match(/netfront\/(\d+([\._]\d)*)/)[1];
        b[2] = "netfront";
        b[3] = b[1];
        return b;
    } else if (brs.search(/netscape4\/(\d+([\.-]\d)*)/) != -1) {
        // Netscape 4.x
        b[0] = "netscape";
        b[1] = brs.match(/netscape4\/(\d+([\.-]\d)*)/)[1];
        b[2] = "mozold";
        b[3] = b[1];
        return b;
    } else if ((brs.search(/mozilla\/(4.\d*)/) != -1) && (brs.search(/msie\s(\d+(\.?\d)*)/) == -1)) {
        b[0] = "netscape";
        b[1] = brs.match(/mozilla\/(4.\d*)/)[1];
        b[2] = "mozold";
        b[3] = b[1];
        return b;
    } else if ((brs.search(/mozilla\/5.0/) != -1) && (brs.search(/gecko\//) != -1)) {
        // Mozilla Seamonkey
        b[0] = "mozsea";
        b[1] = brs.match(/rv\x3a(\d+(\.?\d)*)/)[1];
        b[2] = "gecko";
        b[3] = getGeckoVersion();
        return b;
    } else if (brs.search(/elinks/) != -1) {
        // ELinks
        b[0] = "elinks";
        (brs.search(/elinks\/(\d+(\.?\d)*)/) == -1 ?
b[1] = brs.match(/elinks\s\x28(\d+(\.?\d)*)/)[1] :
b[1] = brs.match(/elinks\/(\d+(\.?\d)*)/)[1]);
        b[2] = "elinks";
        b[3] = b[1];
        return b;
    } else if (brs.search(/w3m\/(\d+(\.?\d)*)/) != -1) {
        // w3m
        b[0] = "w3m"
        b[1] = brs.match(/(^w3m|\sw3m)\/(\d+(\.?\d)*)/)[2];
        b[2] = "w3m";
        b[3] = b[1];
        return b;
    } else if (brs.search(/links/) != -1) {
        // Links
        b[0] = "links";
        (brs.search(/links\/(\d+(\.?\d)*)/) == -1 ? b[1] = brs.match(/links\s\x28(\d+(\.?\d)*)/)[1] : b[1] = brs.match(/links\/(\d+(\.?\d)*)/)[1]);
        b[2] = "links";
        b[3] = b[1];
        return b;
    } else if (brs.search(/java[\/\s]?(\d+([\._]\d)*)/) != -1) {
        // Java (as web-browser)
        b[0] = "java";
        b[1] = brs.match(/java[\/\s]?(\d+([\._]\d)*)/)[1];
        b[2] = "java";
        b[3] = b[1];
        return b;
    } else if (brs.search(/lynx/) != -1) {
        // Lynx (SSD)
        b[0] = "lynx";
        b[1] = brs.match(/lynx\/(\d+(\.?\d)*)/)[1];
        b[2] = "libwww-fm";
        b[3] = brs.match(/libwww-fm\/(\d+(\.?\d)*)/)[1];
        return b;
    } else if (brs.search(/dillo/) != -1) {
        // Dillo (SSD)
        b[0] = "dillo";
        b[1] = brs.match(/dillo\s*\/*(\d+(\.?\d)*)/)[1];
        b[2] = "dillo";
        b[3] = b[1];
        return b;
    } else if (brs.search(/wget/) != -1) {
        // wget (SSD)
        b[0] = "wget";
        b[1] = brs.match(/wget\/(\d+(\.?\d)*)/)[1];
        b[2] = "robot";
        b[3] = "-1"
        return b;
    } else if (brs.search(/googlebot\-image/) != -1) {
        // GoogleBot-Image (SSD)
        b[0] = "googlebotimg";
        b[1] = brs.match(/googlebot\-image\/(\d+(\.?\d)*)/)[1];
        b[2] = "robot";
        b[3] = "-1"
        return b;
    } else if (brs.search(/googlebot/) != -1) {
        // GoogleBot (SSD)
        b[0] = "googlebot";
        b[1] = brs.match(/googlebot\/(\d+(\.?\d)*)/)[1];
        b[2] = "robot";
        b[3] = "-1"
        return b;
    } else if (brs.search(/msnbot/) != -1) {
        // MSNBot (SSD)
        b[0] = "msnbot";
        b[1] = brs.match(/msnbot\/(\d+(\.?\d)*)/)[1];
        b[2] = "robot";
        b[3] = "-1"
        return b;
    } else if (brs.search(/turnitinbot/) != -1) {
        // Turnitin (SSD)
        b[0] = "turnitinbot";
        b[1] = brs.match(/turnitinbot\/(\d+(\.?\d)*)/)[1];
        b[2] = "robot";
        b[3] = "-1"
        return b;
    } else {
        b[0] = "unknown";
        return b;
    }
}

// Return browser's (actual) major version or -1 if bad version entered
function getMajorVersion(v) {
    return (isEmpty(v) ? -1 : (hasDot(v) ? v : v.match(/(\d*)(\.\d*)*/)[1]))
}

// Return browser's (actual) minor version or -1 if bad version entered
function getMinorVersion(v) {
    return (!isEmpty(v) ? (!hasDot(v) ? v.match(/\.(\d*([-\.]\d*)*)/)[1] : 0) :
-1)
}

// Return operating system we are running on top of
function getOS(obj) {

    var os = new Array("unknown", "unknown");

    (isEmpty(obj) ? brs = navigator.userAgent.toLowerCase() : brs = obj);

    if (brs.search(/windows\sce/) != -1) {
        os[0] = "wince";
        try {
            os[1] = brs.match(/windows\sce\/(\d+(\.?\d)*)/)[1];
        } catch (e) { }
        return os;
    } else if ((brs.search(/windows/) != -1) || ((brs.search(/win9\d{1}/) != -1))
) {
        os[0] = "win";
        if (brs.search(/nt\s5\.1/) != -1) {
            os[1] = "xp";
        } else if (brs.search(/nt\s5\.0/) != -1) {
            os[1] = "2000";
        } else if ((brs.search(/win98/) != -1) || (brs.search(/windows\s98/) !=
-1)) {
            os[1] = "98";
        } else if (brs.search(/windows\sme/) != -1) {
            os[1] = "me";
        } else if (brs.search(/nt\s5\.2/) != -1) {
            os[1] = "win2k3";
        } else if ((brs.search(/windows\s95/) != -1) || (brs.search(/win95/) !=
-1)) {
            os[1] = "95";
        } else if ((brs.search(/nt\s4\.0/) != -1) || (brs.search(/nt4\.0/)) !=
-1) {
            os[1] = "nt4";
        }

        return os;
    } else if (brs.search(/linux/) != -1) {
        os[0] = "linux";
        try {
            os[1] = brs.match(/linux\s?(\d+(\.?\d)*)/)[1];
        } catch (e) { }
        return os;
    } else if (brs.search(/mac\sos\sx/) != -1) {
        os[0] = "macosx";
        return os;
    } else if (brs.search(/freebsd/) != -1) {
        os[0] = "freebsd";
        try {
            os[1] = brs.match(/freebsd\s(\d(\.\d)*)*/)[1];
        } catch (e) { }
        return os;
    } else if (brs.search(/sunos/) != -1) {
        os[0] = "sunos";
        try {
            os[1] = brs.match(/sunos\s(\d(\.\d)*)*/)[1];
        } catch (e) { }
        return os;
    } else if (brs.search(/irix/) != -1) {
        os[0] = "irix";
        try {
            os[1] = brs.match(/irix\s(\d(\.\d)*)*/)[1];
        } catch (e) { }
        return os;
    } else if (brs.search(/openbsd/) != -1) {
        os[0] = "openbsd";
        try {
            os[1] = brs.match(/openbsd\s(\d(\.\d)*)*/)[1];
        } catch (e) { }
        return os;
    } else if ((brs.search(/macintosh/) != -1) || (brs.search(/mac\x5fpowerpc/)
!= -1)) {
        os[0] = "macclassic";
        return os;
    } else if (brs.search(/os\/2/) != -1) {
        os[0] = "os2";
        try {
            os[1] = brs.match(/warp\s((\d(\.\d)*)*)/)[1];
        } catch (e) { }
        return os;
    } else if (brs.search(/openvms/) != -1) {
        os[0] = "openvms";
        try {
            os[1] = brs.match(/openvms\sv((\d(\.\d)*)*)/)[1];
        } catch (e) { }
        return os;
    } else if ((brs.search(/amigaos/) != -1) || (brs.search(/amiga/) != -1)) {
        os[0] = "amigaos";
        try {
            os[1] = brs.match(/amigaos\s?(\d(\.\d)*)*/)[1];
        } catch (e) { }
        return os;
    } else if (brs.search(/hurd/) != -1) {
        os[0] = "hurd";
        return os;
    } else if (brs.search(/hp\-ux/) != -1) {
        os[0] = "hpux";
        try {
            os[1] = brs.match(/hp\-ux\sb\.[\/\s]?(\d+([\._]\d)*)/)[1];
        } catch (e) { }
        return os;
    } else if ((brs.search(/unix/) != -1) || (brs.search(/x11/) != -1)) {
        os[0] = "unix";
        return os;
    } else if (brs.search(/cygwin/) != -1) {
        os[0] = "cygwin";
        return os;
    } else if (brs.search(/java[\/\s]?(\d+([\._]\d)*)/) != -1) {
        os[0] = "java";
        try {
            os[1] = brs.match(/java[\/\s]?(\d+([\._]\d)*)/)[1];
        } catch (e) { }
        return os;
    } else if (brs.search(/palmos/) != -1) {
        os[0] = "palmos";
        return os;
    } else if (brs.search(/symbian\s?os\/(\d+([\._]\d)*)/) != -1) {
        os[0] = "symbian";
        try {
            os[1] = brs.match(/symbian\s?os\/(\d+([\._]\d)*)/)[1];
        } catch (e) { }
        return os;
    } else {
        os[0] = "unknown";
        return os;
    }
}

// Return Gecko version
function getGeckoVersion() {
    return brs.match(/gecko\/([0-9]+)/)[1];
}

// Return MSIE version
function getMSIEVersion() {
    return brs.match(/msie\s(\d+(\.?\d)*)/)[1];
}

// Return full browser UA string
function getFullUAString(obj) {
    (isEmpty(obj) ? brs = navigator.userAgent.toLowerCase() : brs = obj);
    return brs;
}

// Is Flash plug-in installed?
function hasFlashPlugin(obj) {

    (isEmpty(obj) ? brs = navigator.userAgent.toLowerCase() : brs = obj);

    var f = new Array("0", "0");
    var brwEng = getBrowser(obj)[2];
    var opSys = getOS(obj)[0];

    //if (getBrowser(obj)[2]!="msie") {
    if ((brwEng == "gecko") || (brwEng == "opera") || (brwEng == "khtml") || (brwEng == "mozold") || (opSys == "macosx") || (opSys == "macclassic")) {
        // Non-IE Flash plug-in detection

        if (navigator.plugins && navigator.plugins.length) {
            x = navigator.plugins["Shockwave Flash"];
            if (x) {
                f[0] = 2;
                if (x.description) {
                    y = x.description;
                    f[1] = y.charAt(y.indexOf('.') - 1);
                }
            } else {
                f[0] = 1;
            }
            if (navigator.plugins["Shockwave Flash 2.0"]) {
                f[0] = 2;
                f[0] = 2;
            }
        } else if (navigator.mimeTypes && navigator.mimeTypes.length) {
            x = navigator.mimeTypes['application/x-shockwave-flash'];
            if (x && x.enabledPlugin) {
                f[0] = 2;
            } else {
                f[0] = 1;
            }
        }

        return f;

    } else if (brwEng == "msie") {
        // IE flash detection.
        for (var i = 15; i > 0; i--) {
            try {
                var flash = new ActiveXObject("ShockwaveFlash.ShockwaveFlash." + i);
                f[1] = i;
                break;
                //return;
            } catch (e) { }
        }

        if (f[1] > 0) {
            f[0] = 2
        } else {
            f[0] = 1
        }
        return f;
    } else {
        f[0] = 0;
        f[1] = 0;
        return f;
    }
}

// Are pop-up windows allowed for this site? (i. e. has the user a pop-up blocker?)
function popupsAllowed() {
    var allowed = false;
    var w = window.open("about:blank", "", "directories=no,height=1,width=1,menubar=no,resizable=no,scrollbars=no,status=no,titlebar=no,left=0,top=0,location=no");
    if (w) {
        allowed = true;
        w.close();
    }
    return allowed;
}

// Helper function to detect Javascript version
function _jsVersion() {

    document.write('<script language="JavaScript1.0">');
    document.write('var jsVer=1.0;');
    document.write('</script>');

    document.write('<script language="JavaScript1.1">');
    document.write('var jsVer=1.1;');
    document.write('</script>');

    document.write('<script language="JavaScript1.2">');
    document.write('var jsVer=1.2;');
    document.write('</script>');

    document.write('<script language="JavaScript1.3">');
    document.write('var jsVer=1.3;');
    document.write('</script>');

    document.write('<script language="JavaScript1.4">');
    document.write('var jsVer=1.4;');
    document.write('</script>');

    document.write('<script language="JavaScript1.5">');
    document.write('var jsVer=1.5;');
    document.write('</script>');

    document.write('<script language="JavaScript1.6">');
    document.write('var jsVer=1.6;');
    document.write('</script>');

    document.write('<script language="JavaScript1.7">');
    document.write('var jsVer=1.7;');
    document.write('</script>');

    document.write('<script language="JavaScript1.8">');
    document.write('var jsVer=1.8;');
    document.write('</script>');

    document.write('<script language="JavaScript2.0">');
    document.write('var jsVer=2.0;');
    document.write('</script>');

}

// What is the newest version of Javascript does the browser report as supported?
function jsVersion() {
    _jsVersion();
    return jsVer;
}

/* FOR INTERNAL USE ONLY. THIS FUNCTIONS ARE SUBJECT TO CHANGE, DON'T TRUST THEM */
// Is input empty?
function isEmpty(input) {
    return (input == null || input == "")
}

// Does this string contain a dot?
function hasDot(input) {
    return (input.search(/\./) == -1)
}
/* END OF FOR INTERNAL USE ONLY FUNCTIONS */