gistfile1.js

$('#myElement').live('webkitAnimationEnd webkitAnimationStart keyframe', function(e){
  switch( e.type ){
    case 'webkitAnimationEnd':
      // end event
    break;
    case 'webkitAnimationStart':
      // start event
    break;
    case 'keyframe':
      // trigger event
      console.log(e.originalEvent.percent);
    break;
  }
});
$('#myElement').keyframe(); // plugin init

$('#myElement').addClass('ani foo'); // css animation