<xen:if is="{$xenOptions.googleAnalyticsWebPropertyId}"><script>
var _gaq = [['_setAccount', '{$xenOptions.googleAnalyticsWebPropertyId}'], ['_trackPageview']];
!function(d, t)
{
var g = d.createElement(t),
s = d.getElementsByTagName(t)[0];
g.async = true;
g.src = ('https:' == d.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
s.parentNode.insertBefore(g, s);
}
(document, 'script');
</script><xen:comment><!--Adapted from http://mathiasbynens.be/notes/async-analytics-snippet--></xen:comment></xen:if>