Optimized Google Analytics Tracker code

googleAnalyticsTracker.js

// Optimized Google Analytics Tracker code
// http://mathiasbynens.be/notes/async-analytics-snippet

var _gaq = [['_setAccount', 'UA-XXXXX-X'], ['_trackPageview']];
// replace XXXXX-X with your tracking id

(function(d, t) {
	var s = d.getElementsByTagName(t)[0],
		g = d.createElement(t);
	g.async = !0;
	g.src = '//www.google-analytics.com/ga.js';
	s.parentNode.insertBefore(g, s);
}(document, 'script'));

//NOTE: Do not use this script in pages which have multiple GA tracking code.