Detection and parsing "accept language" and browser language

gistfile1.js

(function ($) {

	$.ajax({
		url: "http://ajaxhttpheaders.appspot.com", 
		dataType: "jsonp", 
		
		success: function (headers) {
			language = headers["Accept-Language"];

			console.log({
				"browser": getBrowserLanguage(),
				
				"accept": getAcceptLanguageCodes(language)
			});
		}
	});

	function getAcceptLanguageCodes(s) {
		var accept = [],
			pairs = ("" + s).split(/,\s*/);

		for (var i = 0, acceptNames = {}, code; i < pairs.length; i++) {
			if (code = pairs[i].match(/^([a-z]{2})(-[a-z]{2})?(;|$)/i)) {
				code = code[1];

				if (typeof acceptNames[code] == "undefined") {
					accept.push(code);
			
					acceptNames[code] = true;
				}
			}
		}

		return accept;
	}

	function getBrowserLanguage() {
		return getAcceptLanguageCodes(window.navigator.userLanguage || window.navigator.language)[0];
	}

})(jQuery);