tweet-callback

$.getScript("http://platform.twitter.com/widgets.js", function(){
   function handleTweetEvent(event){
     if (event) {
       alert("This is a callback from a tweet")
     }
   }
   twttr.events.bind('tweet', handleTweetEvent);        
 });

<a href="http://twitter.com/intent/tweet?url=http://test.com;via=stack">twitter</a>


// OTHER

twttr.ready(function (twttr) {
});