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function BrowserDetectLite() {

	var ua = navigator.userAgent.toLowerCase(); 

	this.ua = ua;



	// browser name

	this.isGecko     = (ua.indexOf('gecko') != -1);

	this.isMozilla   = (this.isGecko && ua.indexOf("gecko/") + 14 == ua.length);

	this.isNS        = ( (this.isGecko) ? (ua.indexOf('netscape') != -1) : ( (ua.indexOf('mozilla') != -1) && (ua.indexOf('spoofer') == -1) && (ua.indexOf('compatible') == -1) && (ua.indexOf('opera') == -1) && (ua.indexOf('webtv') == -1) && (ua.indexOf('hotjava') == -1) ) );

	this.isIE        = ( (ua.indexOf("msie") != -1) && (ua.indexOf("opera") == -1) && (ua.indexOf("webtv") == -1) ); 

	this.isOpera     = (ua.indexOf("opera") != -1); 

	this.isKonqueror = (ua.indexOf("konqueror") != -1); 

	this.isIcab      = (ua.indexOf("icab") != -1); 

	this.isAol       = (ua.indexOf("aol") != -1); 

	this.isWebtv     = (ua.indexOf("webtv") != -1); 

	this.isOmniweb   = (ua.indexOf("omniweb") != -1);

	this.isDreamcast   = (ua.indexOf("dreamcast") != -1);

	

	// spoofing and compatible browsers

	this.isIECompatible = ( (ua.indexOf("msie") != -1) && !this.isIE);

	this.isNSCompatible = ( (ua.indexOf("mozilla") != -1) && !this.isNS && !this.isMozilla);

	

	// browser version

	this.versionMinor = parseFloat(navigator.appVersion); 

	

	// correct version number for NS6+ 

	if (this.isNS && this.isGecko) {

		this.versionMinor = parseFloat( ua.substring( ua.lastIndexOf('/') + 1 ) );

	}

	

	// correct version number for IE4+ 

	else if (this.isIE && this.versionMinor >= 4) {

		this.versionMinor = parseFloat( ua.substring( ua.indexOf('msie ') + 5 ) );

	}

	

	// correct version number for Opera 

	else if (this.isOpera) {

		if (ua.indexOf('opera/') != -1) {

			this.versionMinor = parseFloat( ua.substring( ua.indexOf('opera/') + 6 ) );

		}

		else {

			this.versionMinor = parseFloat( ua.substring( ua.indexOf('opera ') + 6 ) );

		}

	}

	

	// correct version number for Konqueror

	else if (this.isKonqueror) {

		this.versionMinor = parseFloat( ua.substring( ua.indexOf('konqueror/') + 10 ) );

	}

	

	// correct version number for iCab 

	else if (this.isIcab) {

		if (ua.indexOf('icab/') != -1) {

			this.versionMinor = parseFloat( ua.substring( ua.indexOf('icab/') + 6 ) );

		}

		else {

			this.versionMinor = parseFloat( ua.substring( ua.indexOf('icab ') + 6 ) );

		}

	}

	

	// correct version number for WebTV

	else if (this.isWebtv) {

		this.versionMinor = parseFloat( ua.substring( ua.indexOf('webtv/') + 6 ) );

	}

	

	this.versionMajor = parseInt(this.versionMinor); 

	this.geckoVersion = ( (this.isGecko) ? ua.substring( (ua.lastIndexOf('gecko/') + 6), (ua.lastIndexOf('gecko/') + 14) ) : -1 );

	

	// platform

	this.isWin   = (ua.indexOf('win') != -1);

	this.isWin32 = (this.isWin && ( ua.indexOf('95') != -1 || ua.indexOf('98') != -1 || ua.indexOf('nt') != -1 || ua.indexOf('win32') != -1 || ua.indexOf('32bit') != -1) );

	this.isMac   = (ua.indexOf('mac') != -1);

	this.isUnix  = (ua.indexOf('unix') != -1 || ua.indexOf('linux') != -1 || ua.indexOf('sunos') != -1 || ua.indexOf('bsd') != -1 || ua.indexOf('x11') != -1)

	

	// specific browser shortcuts

	this.isNS4x = (this.isNS && this.versionMajor == 4);

	this.isNS40x = (this.isNS4x && this.versionMinor < 4.5);

	this.isNS47x = (this.isNS4x && this.versionMinor >= 4.7);

	this.isNS4up = (this.isNS && this.versionMinor >= 4);

	this.isNS6x = (this.isNS && this.versionMajor == 6);

	this.isNS6up = (this.isNS && this.versionMajor >= 6);

	

	this.isIE4x = (this.isIE && this.versionMajor == 4);

	this.isIE4up = (this.isIE && this.versionMajor >= 4);

	this.isIE5x = (this.isIE && this.versionMajor == 5);

	this.isIE55 = (this.isIE && this.versionMinor == 5.5);

	this.isIE5up = (this.isIE && this.versionMajor >= 5);

	this.isIE6x = (this.isIE && this.versionMajor == 6);

	this.isIE6up = (this.isIE && this.versionMajor >= 6);

	

	this.isIE4xMac = (this.isIE4x && this.isMac);

}

var browser = new BrowserDetectLite();