ga-async-optimized.js

/**
 * Optimised GA async snippet
 *
 * @see http://mathiasbynens.be/notes/async-analytics-snippet
 */
<script>
  var _gaq = [['_setAccount', 'UA-XXXXX-X'], ['_trackPageview']];
  (function(d, t) {
    var g = d.createElement(t),
        s = d.getElementsByTagName(t)[0];
    g.src = '//www.google-analytics.com/ga.js';
    s.parentNode.insertBefore(g, s);
  }(document, 'script'));
</script>