transitionEnd polyfill

transitionEnd.js

(function(){
	function transitionEndEventName() {
		var i,
		el = document.createElement('div'),
		transitions = {
			'transition':'transitionend',
			'OTransition':'otransitionend',  // oTransitionEnd in very old Opera
			'MozTransition':'transitionend',
			'WebkitTransition':'webkitTransitionEnd'
		};
	
		for (i in transitions) {
			if (transitions.hasOwnProperty(i) && el.style[i] !== undefined) {
				return transitions[i];
			}
		}
	}
	window.transitionEnd = transitionEndEventName();
})();