Updated jQuery Browser to take browsers with a version number > 9 into account and use opera's built-in .version over regex

jquery.browser.js

/*

jQuery Browser Plugin
	* Version 2.4
	* 2010-02-03
	* URL: http://jquery.thewikies.com/browser
	* Description: jQuery Browser Plugin extends browser detection capabilities and can assign browser selectors to CSS classes.
	* Author: Nate Cavanaugh, Minhchau Dang, Jonathan Neal, & Gregory Waxman
	* Copyright: Copyright (c) 2008 Jonathan Neal under dual MIT/GPL license.
	* JSLint: This javascript file passes JSLint verification.
*//*jslint
		bitwise: true,
		browser: true,
		eqeqeq: true,
		forin: true,
		nomen: true,
		plusplus: true,
		undef: true,
		white: true
*//*global
		jQuery
*/

(function ($) {
	$.browserTest = function (a, z) {
		var u = 'unknown', 
			x = 'X', 
			m = function (r, h) {
			for (var i = 0; i < h.length; i = i + 1) {
				r = r.replace(h[i][0], h[i][1]);
			}

			return r;
		}, c = function (i, a, b, c) {
			var r = {
				name: m((a.exec(i) || [u, u])[1], b)
			};

			r[r.name] = true;

			if (!r.opera) {
				r.version = (c.exec(i) || [x, x, x, x])[3];
			}
			else {
				r.version = window.opera.version();
			}
			
			if (/safari/.test(r.name) && r.version > 400) {
				r.version = '2.0';
			}
			else if (r.name === 'presto') {
				r.version = ($.browser.version > 9.27) ? 'futhark' : 'linear_b';
			}
			
			r.versionNumber = parseFloat(r.version, 10) || 0;
			var minorStart = 1;
			if (r.versionNumber < 100 && r.versionNumber > 9) {
				minorStart = 2;
			}
			r.versionX = (r.version !== x) ? r.version.substr(0, minorStart) : x;
			r.className = r.name + r.versionX;

			return r;
		};

		a = (/Opera|Navigator|Minefield|KHTML|Chrome/.test(a) ? m(a, [
			[/(Firefox|MSIE|KHTML,\slike\sGecko|Konqueror)/, ''],
			['Chrome Safari', 'Chrome'],
			['KHTML', 'Konqueror'],
			['Minefield', 'Firefox'],
			['Navigator', 'Netscape']
		]) : a).toLowerCase();

		$.browser = $.extend((!z) ? $.browser : {}, c(a, /(camino|chrome|firefox|netscape|konqueror|lynx|msie|opera|safari)/, [], /(camino|chrome|firefox|netscape|netscape6|opera|version|konqueror|lynx|msie|safari)(\/|\s)([a-z0-9\.\+]*?)(\;|dev|rel|\s|$)/));
				
		$.layout = c(a, /(gecko|konqueror|msie|opera|webkit)/, [
			['konqueror', 'khtml'],
			['msie', 'trident'],
			['opera', 'presto']
		], /(applewebkit|rv|konqueror|msie)(\:|\/|\s)([a-z0-9\.]*?)(\;|\)|\s)/);

		$.os = {
			name: (/(win|mac|linux|sunos|solaris|iphone)/.exec(navigator.platform.toLowerCase()) || [u])[0].replace('sunos', 'solaris')
		};
		
		if (!z) {
			$('html').addClass([$.os.name, $.browser.name, $.browser.className, $.layout.name, $.layout.className].join(' '));
		}
	};

	$.browserTest(navigator.userAgent);
}(jQuery));

in line 56 there is a missing ";" - with that it is working great, thanks!
the script works with jQuery 1.5.1, too.
Is there a possibility to detect wether the visitor uses firefox 3.0, 3.5 or 3.6 ?