var BrowserInfo = new Object();

BrowserInfo.userAgent = navigator.userAgent.toLowerCase();

BrowserInfo.isIE = (BrowserInfo.userAgent.indexOf('msie') >= 0);
BrowserInfo.isGecko = !BrowserInfo.isIE;
BrowserInfo.isSafari = (BrowserInfo.userAgent.indexOf('safari') >= 0);
BrowserInfo.isNetscape =(BrowserInfo.userAgent.indexOf('netscape') >= 0);