//
// Browser Detection
//
var bTest = 0;

var sUserAgent = navigator.userAgent;
var fAppVersion = parseFloat(navigator.appVersion);

function compareVersions(sVersion1, sVersion2)
{
    var aVersion1 = sVersion1.split(".");
    var aVersion2 = sVersion2.split(".");

	if( bTest )
	{
		document.write( "compareVersions: sVersion1, sVersion2<br />" + sVersion1 + ", " + sVersion2 + "<br /><br />" );
	}
    if ( aVersion1.length > aVersion2.length )
	{
        for ( var i=0; i < aVersion1.length - aVersion2.length; i++ )
		{
            aVersion2.push("0");
        }
    } else if ( aVersion1.length < aVersion2.length )
	{
        for ( var i=0; i < aVersion2.length - aVersion1.length; i++ )
		{
            aVersion1.push("0");
        }
    }

    for ( var i=0; i < aVersion1.length; i++ )
	{
        if (aVersion1[i] < aVersion2[i])
		{
            return -1;
        } else if ( aVersion1[i] > aVersion2[i] )
		{
            return 1;
        }
    }

    return 0;
}

var isOpera = sUserAgent.indexOf("Opera") > -1;
var isMinOpera4 = isMinOpera5 = isMinOpera6 = isMinOpera7 = isMinOpera7_5 = false;

if ( isOpera )
{
    var fOperaVersion;
    if( navigator.appName == "Opera" )
	{
        fOperaVersion = fAppVersion;
    } else {
        var reOperaVersion = new RegExp("Opera (\\d+\\.\\d+)");
        reOperaVersion.test(sUserAgent);
        fOperaVersion = parseFloat(RegExp["$1"]);
    }

    isMinOpera4 = fOperaVersion >= 4;
    isMinOpera5 = fOperaVersion >= 5;
    isMinOpera6 = fOperaVersion >= 6;
    isMinOpera7 = fOperaVersion >= 7;
    isMinOpera7_5 = fOperaVersion >= 7.5;
}

var isKHTML = sUserAgent.indexOf("KHTML") > -1
              || sUserAgent.indexOf("Konqueror") > -1
              || sUserAgent.indexOf("AppleWebKit") > -1;

var isMinSafari1 = isMinSafari1_2 = false;
var isMinKonq2_2 = isMinKonq3 = isMinKonq3_1 = isMinKonq3_2 = false;

if ( isKHTML )
{
    isSafari = sUserAgent.indexOf("AppleWebKit") > -1;
    isKonq = sUserAgent.indexOf("Konqueror") > -1;

    if ( isSafari )
	{
        var reAppleWebKit = new RegExp("AppleWebKit\\/(\\d+(?:\\.\\d*)?)");
        reAppleWebKit.test(sUserAgent);
        var fAppleWebKitVersion = parseFloat(RegExp["$1"]);

        isMinSafari1 = fAppleWebKitVersion >= 85;
        isMinSafari1_2 = fAppleWebKitVersion >= 124;
    }
	else if ( isKonq )
	{
        var reKonq = new RegExp("Konqueror\\/(\\d+(?:\\.\\d+(?:\\.\\d)?)?)");

		reKonq.test(sUserAgent);
        isMinKonq2_2 = compareVersions(RegExp["$1"], "2.2") >= 0;
        isMinKonq3   = compareVersions(RegExp["$1"], "3.0") >= 0;
        isMinKonq3_1 = compareVersions(RegExp["$1"], "3.1") >= 0;
        isMinKonq3_2 = compareVersions(RegExp["$1"], "3.2") >= 0;
    }

}

var isIE = sUserAgent.indexOf("compatible") > -1
           && sUserAgent.indexOf("MSIE") > -1
           && !isOpera;

var isMinIE4 = isMinIE5 = isMinIE5_5 = isMinIE6 = isMinIE7 = false;

if ( isIE )
{
    var reIE = new RegExp("MSIE (\\d+\\.\\d+);");
    reIE.test(sUserAgent);
    var fIEVersion = parseFloat(RegExp["$1"]);

    isMinIE4   = fIEVersion >= 4;
    isMinIE5   = fIEVersion >= 5;
    isMinIE5_5 = fIEVersion >= 5.5;
    isMinIE6   = fIEVersion >= 6.0;
    isMinIE7   = fIEVersion >= 7.0;
}

var isMoz = sUserAgent.indexOf("Gecko") > -1
            && !isKHTML;

var isMinMoz1 = isMinMoz1_4 = isMinMoz1_5 = false;

if ( isMoz )
{
    var reMoz = new RegExp("rv:(\\d+\\.\\d+(?:\\.\\d+)?)");
    reMoz.test(sUserAgent);
    isMinMoz1 = compareVersions(RegExp["$1"], "1.0") >= 0;
    isMinMoz1_4 = compareVersions(RegExp["$1"], "1.4") >= 0;
    isMinMoz1_5 = compareVersions(RegExp["$1"], "1.5") >= 0;
}

var isNS4 = !isIE && !isOpera && !isMoz && !isKHTML
            && (sUserAgent.indexOf("Mozilla") == 0)
            && (navigator.appName == "Netscape")
            && (fAppVersion >= 4.0 && fAppVersion < 5.0);

var isMinNS4 = isMinNS4_5 = isMinNS4_7 = isMinNS4_8 = false;

if ( isNS4 )
{
    isMinNS4 = true;
    isMinNS4_5 = fAppVersion >= 4.5;
    isMinNS4_7 = fAppVersion >= 4.7;
    isMinNS4_8 = fAppVersion >= 4.8;
}

var isWin = (navigator.platform == "Win32") || (navigator.platform == "Windows");
var isMac = (navigator.platform == "Mac68K") || (navigator.platform == "MacPPC")
            || (navigator.platform == "Macintosh");

var isUnix = (navigator.platform == "X11") && !isWin && !isMac;

var isWin95 = isWin98 = isWinNT4 = isWin2K = isWinME = isWinXP = false;
var isMac68K = isMacPPC = false;
var isSunOS = isMinSunOS4 = isMinSunOS5 = isMinSunOS5_5 = false;

if ( isWin )
{
    isWin95 = sUserAgent.indexOf("Win95") > -1
              || sUserAgent.indexOf("Windows 95") > -1;
    isWin98 = sUserAgent.indexOf("Win98") > -1
              || sUserAgent.indexOf("Windows 98") > -1;
    isWinME = sUserAgent.indexOf("Win 9x 4.90") > -1
              || sUserAgent.indexOf("Windows ME") > -1;
    isWin2K = sUserAgent.indexOf("Windows NT 5.0") > -1
              || sUserAgent.indexOf("Windows 2000") > -1;
    isWinXP = sUserAgent.indexOf("Windows NT 5.1") > -1
              || sUserAgent.indexOf("Windows XP") > -1;
    isWinNT4 = sUserAgent.indexOf("WinNT") > -1
              || sUserAgent.indexOf("Windows NT") > -1
              || sUserAgent.indexOf("WinNT4.0") > -1
              || sUserAgent.indexOf("Windows NT 4.0") > -1
              && (!isWinME && !isWin2K && !isWinXP);
}

if ( isMac )
{
    isMac68K = sUserAgent.indexOf("Mac_68000") > -1
               || sUserAgent.indexOf("68K") > -1;
    isMacPPC = sUserAgent.indexOf("Mac_PowerPC") > -1
               || sUserAgent.indexOf("PPC") > -1;
}

if ( isUnix )
{
    isSunOS = sUserAgent.indexOf("SunOS") > -1;

	if (isSunOS)
	{
        var reSunOS = new RegExp("SunOS (\\d+\\.\\d+(?:\\.\\d+)?)");
        reSunOS.test(sUserAgent);
        isMinSunOS4 = compareVersions(RegExp["$1"], "4.0") >= 0;
        isMinSunOS5 = compareVersions(RegExp["$1"], "5.0") >= 0;
        isMinSunOS5_5 = compareVersions(RegExp["$1"], "5.5") >= 0;
    }
}

if ( bTest )
{
	document.write( "Screen Resolution = " + screen.width + "x" + screen.height + "<br />" );
	document.write( "sUserAgent  = " + sUserAgent  + "<br />" );
	document.write( "fAppVersion = " + fAppVersion + "<br /><br />" );
	document.write( " -- Opera -- <br />" );
	document.write( "  isOpera = " + isOpera + "<br />" );
	document.write( "      isMinOpera4   = " + isMinOpera4   + "<br />" );
	document.write( "      isMinOpera5   = " + isMinOpera5   + "<br />" );
	document.write( "      isMinOpera6   = " + isMinOpera6   + "<br />" );
	document.write( "      isMinOpera7   = " + isMinOpera7   + "<br />" );
	document.write( "      isMinOpera7_5 = " + isMinOpera7_5 + "<br />" );
	document.write( " -- kHTML -- <br />" );
	document.write( "  isKHTML = " + isKHTML + "<br />" );
	if ( isKHTML )
	{
	    document.write( "    isSafari   = " + isSafari + "<br />" );
	    document.write( "      isMinSafari1   = " + isMinSafari1   + "<br />" );
	    document.write( "      isMinSafari1_2 = " + isMinSafari1_2 + "<br />" );
	    document.write( "    isKonq = " + isKonq + "<br />" );
	    document.write( "      isMinKonq2_2 = " + isMinKonq2_2 + "<br />" );
	    document.write( "      isMinKonq3   = " + isMinKonq3   + "<br />" );
	    document.write( "      isMinKonq3_1 = " + isMinKonq3_1 + "<br />" );
	    document.write( "      isMinKonq3_2 = " + isMinKonq3_2 + "<br />" );
	}
	document.write( " -- IE -- <br />" );
	document.write( "  isIE = " + isIE + "<br />" );
	document.write( "      isMinIE4   = " + isMinIE4   + "<br />" );
	document.write( "      isMinIE5   = " + isMinIE5   + "<br />" );
	document.write( "      isMinIE5_5 = " + isMinIE5_5 + "<br />" );
	document.write( "      isMinIE6   = " + isMinIE6   + "<br />" );
	document.write( "      isMinIE7   = " + isMinIE7   + "<br />" );
	document.write( " -- Mozilla -- <br />" );
	document.write( "  isMoz = " + isMoz + "<br />" );
	document.write( "      isMinMoz1   = " + isMinMoz1   + "<br />" );
	document.write( "      isMinMoz1_4 = " + isMinMoz1_4 + "<br />" );
	document.write( "      isMinMoz1_5 = " + isMinMoz1_5 + "<br />" );
	document.write( " -- Netscape -- <br />" );
	document.write( "  isNS4 = " + isNS4 + "<br />" );
	document.write( "      isMinNS4   = " + isMinNS4   + "<br />" );
	document.write( "      isMinNS4_5 = " + isMinNS4_5 + "<br />" );
	document.write( "      isMinNS4_7 = " + isMinNS4_7 + "<br />" );
	document.write( "      isMinNS4_8 = " + isMinNS4_8 + "<br />" );
	document.write( "<br />" );
	document.write( "  isWin    = " + isWin + "<br />" );
	document.write( "  isMac    = " + isMac + "<br />" );
	document.write( "  isUnix   = " + isUnix + "<br />" );
	document.write( "  isWin95  = " + isWin95 + "<br />" );
	document.write( "  isMac68K = " + isMac68K + "<br />" );
	document.write( "  isSunOS  = " + isSunOS + "<br />" );
}