GTM Custom Event Listener - Twitter buttons

<script>
	if (typeof twttr !== 'undefined') {
      twttr.ready(function (twttr) {
      twttr.events.bind('tweet', tweetIntentToAnalytics);
      twttr.events.bind('retweet', retweetIntentToAnalytics);
      twttr.events.bind('favorite', favIntentToAnalytics);
      twttr.events.bind('follow', followIntentToAnalytics);
	});
}
function clickEventToAnalytics() {
  dataLayer.push({
    'event': 'socialInteraction',
    'socialNetwork': 'Twitter',
    'socialAction': 'click',
    'socialTarget': window.location.href
  });
}
function tweetIntentToAnalytics() {
  dataLayer.push({
    'event': 'socialInteraction',
    'socialNetwork': 'Twitter',
    'socialAction': 'tweet',
    'socialTarget': window.location.href
  });
}
function retweetIntentToAnalytics() {
  dataLayer.push({
    'event': 'socialInteraction',
    'socialNetwork': 'Twitter',
    'socialAction': 'retweet',
    'socialTarget': window.location.href
  });
}
function favIntentToAnalytics() {
  dataLayer.push({
    'event': 'socialInteraction',
    'socialNetwork': 'Twitter',
    'socialAction': 'favorite',
    'socialTarget': window.location.href
  });
}
function followIntentToAnalytics() {
  dataLayer.push({
    'event': 'socialInteraction',
    'socialNetwork': 'Twitter',
    'socialAction': 'follow',
    'socialTarget': window.location.href
  });
}
</script>