// Version 3.0 browser?
var gen3 = (parseInt(navigator.appVersion) >= 3 && parseInt(navigator.appVersion) < 4);

// Netscape?
var ns = (navigator.appName == 'Netscape');
var ns4 = (ns && parseInt(navigator.appVersion) >= 4 && parseInt(navigator.appVersion) < 5);
var ns5 = (ns && parseInt(navigator.appVersion) >= 5 && parseInt(navigator.appVersion) < 6);

// Internet Explorer?
var ie = (navigator.appName == 'Microsoft Internet Explorer');
var ie3 = (ie && navigator.appVersion < 4);
var ie4 = (ie && parseInt(navigator.appVersion) >= 4);

// DOM-Compliant?
var docom = (document.getElementById);

// Windows 2000?
var win2k = (navigator.userAgent.indexOf('Windows NT 5.0') != -1);

// Internet Explorer on a Macintosh?
var ie4mac = (ie && !docom && navigator.userAgent.indexOf('Macintosh') != -1);
var ie5mac = (navigator.appVersion.indexOf('MSIE 5.0; Macintosh')!=-1);

// DHTML Browser
var dhtmlBrowser = (ie4 || ns4 || docom);

// 16-bit Windows?
var win16 = (navigator.appVersion.indexOf("Win16") != -1);