function BrowserDetectLite() {
   var ua = navigator.userAgent.toLowerCase(); 

   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.versionMinor = parseFloat(navigator.appVersion); 

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 ) );
      }
}

	this.versionMajor = parseInt(this.versionMinor); 
}

var browser = new BrowserDetectLite();