172 	<tal:if condition="config/google_analytics_key">

   172 	<!-- Google Analytics -->

   173 		<!-- Google Analytics -->

   173 	<tal:if define="ga_key config/google_analytics_key"

   174 		<script type="text/javascript" tal:content="python:'''

   174 			condition="ga_key">

   175 

   175 		<script async

   176 		  var _gaq = _gaq || [];

   176 				tal:attributes="src string:https://www.googletagmanager.com/gtag/js?id=${ga_key}"></script>

   177 		  _gaq.push(['_setAccount', '%(key)s']);

   177 		<script tal:content="python:'''

   178 		  _gaq.push(['_trackPageview']);

   178 			window.dataLayer = window.dataLayer || [];

   179 

   179 			function gtag() {

   180 		  (function() {

   180 				dataLayer.push(arguments);

   181 			var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;

   181 			}

   182 			ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';

   182 			gtag('js', new Date());

   183 			var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);

   183 			gtag('config', '%(key)s');

   184 		  })();

   184 		''' % {'key': ga_key}"></script>

   185 

   186 		''' % {'key': config.google_analytics_key}"></script>

   187 		<!-- end Google Analytics -->