{% if site.piwik_host_name and site.piwik_site_id %}
   <script type="text/javascript">
     var _paq = _paq || [];
     _paq.push(["trackPageView"]);
     _paq.push(["enableLinkTracking"]);
     (function() {
       var u=(("https:" == document.location.protocol) ? "https" : "http") + "://{{ site.piwik_host_name }}/";
       _paq.push(["setTrackerUrl", u+"piwik.php"]);
       _paq.push(["setSiteId", "{{ site.piwik_site_id }}"]);
       var d=document, g=d.createElement("script"), s=d.getElementsByTagName("script")[0]; g.type="text/javascript";
       g.defer=true; g.async=true; g.src=u+"piwik.js"; s.parentNode.insertBefore(g,s);
     })();
   </script>
 {% endif %}