Analytics for link tracking.

Does it work?

templates/bibitemtpl.html

@@ -15,13 +15,13 @@
       $month$ $year$.</br>
     $endif$
     $if(url)$
-      [<a href="$url$">Paper</a>]
+      [<a href="$url$" onclick="trackLink('@$identifier$:link','$url$'); return false;">Paper</a>]
     $endif$
     $if(slides)$
-      [<a href="$slides$">Slides</a>]
+      [<a href="$slides$" onclick="trackLink('@$identifier$:slides','$url$'); return false;">Slides</a>]
     $endif$
     $if(poster)$
-      [<a href="$poster$">Poster</a>]
+      [<a href="$poster$" onclick="trackLink('@$identifier$:poster','$url$'); return false;">Poster</a>]
     $endif$
     <br>
     $if(note)$

templates/main.html

@@ -15,8 +15,17 @@ type='text/css'>
   window.dataLayer = window.dataLayer || [];
   function gtag(){dataLayer.push(arguments)};
   gtag('js', new Date());
-
   gtag('config', 'UA-33267683-1');
+
+var trackLink = function(label,url) {
+  gtag('event', 'click', {
+    'event_category': 'link',
+    'event_label': label,
+    'event_action': url,
+    'transport_type': 'beacon',
+    'event_callback': function(){document.location = url;}
+  });
+}
 </script>
 </head>