this.isIE = (ua.indexOf('msie') != -1 && !this.isOpera && (ua.indexOf('webtv') == -1) );
this.isMozilla = (this.isGecko && ua.indexOf('gecko/') + 14 == ua.length);
this.isFirebird = (ua.indexOf('firebird/') != -1);
+ this.isFirefox = (ua.indexOf('firefox/') != -1);
this.isNS = ( (this.isGecko) ? (ua.indexOf('netscape') != -1) : ( (ua.indexOf('mozilla') != -1) && !this.isOpera && !this.isSafari && (ua.indexOf('spoofer') == -1) && (ua.indexOf('compatible') == -1) && (ua.indexOf('webtv') == -1) && (ua.indexOf('hotjava') == -1) ) );
// spoofing and compatible browsers