jquery.browser.js

/**
 * Copy of some code from jquery.migrate.js to provide the jquery.browser functionality
 * which was removed from recent jQuery versions
 *
 * TODO: Actually remove usage of jquery.browser from PF
 *
 * @author Stephan Gambke
 */

; (function (jQuery) {
	var uaMatch = function (ua) {
		ua = ua.toLowerCase();

		var match = /(chrome)[ \/]([\w.]+)/.exec(ua) ||
			/(webkit)[ \/]([\w.]+)/.exec(ua) ||
			/(opera)(?:.*version|)[ \/]([\w.]+)/.exec(ua) ||
			/(msie) ([\w.]+)/.exec(ua) ||
			ua.indexOf("compatible") < 0 && /(mozilla)(?:.*? rv:([\w.]+)|)/.exec(ua) ||
			[];

		return {
			browser: match[ 1 ] || "",
			version: match[ 2 ] || "0"
		};
	};

// Don't clobber any existing jQuery.browser in case it's different
	if (!jQuery.browser) {
		var matched = uaMatch(navigator.userAgent);
		var browser = {};

		if (matched.browser) {
			browser[ matched.browser ] = true;
			browser.version = matched.version;
		}

		// Chrome is Webkit, but Webkit is also Safari.
		if (browser.chrome) {
			browser.webkit = true;
		} else if (browser.webkit) {
			browser.safari = true;
		}

		jQuery.browser = browser;
	}
})( jQuery );