Google Analytics (ga.js)
![](https://api.url2png.com/v6/P9F31233A8BF232/aa1d02985aa1e77e5fa6e0b03c732810/png/?url=https%3A%2F%2Fsupport.google.com%2Fanalytics%2Fanswer%2F6004245&unique=19931&fullpage=false&thumbnail_max_width=false&viewport=990x500)
Cookies
Service marker
<script>
var _gaq = _gaq || [];
_gaq.push(['_setAccount', 'UA-XXXXXXX-X']);
_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);
})();
// your optionnal _ga.push()
</script>