Google analytics social events tracking

social_tracking.js

trackSocialEvents: function() {

  // Track Facebook
  FB.Event.subscribe('edge.create', function(targetUrl) {
    _gaq.push(['_trackSocial', 'facebook', 'like', targetUrl]);
  });

  // Track Twitter
  twttr.events.bind('tweet', function(event) {
    if (event) {
      var targetUrl;
      if (event.target && event.target.nodeName == 'IFRAME') {
        targetUrl = extractParamFromUri(event.target.src, 'url');
      }
      _gaq.push(['_trackSocial', 'twitter', 'tweet', targetUrl]);
    }
  );
}