{% if site.google_analytics_tracking_id %}
   <script type="text/javascript">
     var _gaq = _gaq || [];
     _gaq.push(['_setAccount', '{{ site.google_analytics_tracking_id }}']);
     _gaq.push(['_trackPageview']);
 
     (function() {
       var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
       ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
       var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
     })();
   </script>
 {% endif %}