gistfile1.js

/*
*	QWE - Browser
*
*	Copyright (c) 2009 [Daniel Steigerwald](http://daniel.steigerwald.cz)
*/
QWE()(function(Q) {

	Browser = {
		platform: (navigator.platform.match(/mac|win|linux/i) || ['other'])[0].toLowerCase(),
		features: {
			xpath: !!(doc.evaluate),
			air: !!(win.runtime)
		},
		quirks: {},
		boxModel: !doc.compatMode || doc.compatMode == 'CSS1Compat'
	};

	/*	
	*	Browser detection is based on user agent. You should use feature detection whereever it's possible.
	*
	*	if (Browser.ie && Browser.ie > 6) .. 
	*	if (Browser.platform == 'mac') ..
	*	if (Browser.Name == 'chrome') ..
	*	if (Browser.ff && Browser.ff > 2)..
	*/

	// check for the minor browsers first
	(function() {
		var browsers = ['opera', 'ie-msie', 'ff-firefox', 'chrome', 'safari'],
			ua = navigator.userAgent.toLowerCase();

		for (var i = 0, l = browsers.length; i < l; i++) {
			var def = browsers[i].split('-'),
				name = def[0],
				uaName = def[1] || name,
				match = new RegExp(uaName + '[\\s\\/]([^\\s]*)').exec(ua),
				version = match && match[1];
			if (version) {
				Browser.name = name;
				Browser[name] = parseFloat(version);
			}
		}
	})();	

});