TransitionEnd alternative to Modernizr

transitionEnd.js

// Credits:
// http://stackoverflow.com/questions/5023514/how-do-i-normalize-css3-transition-functions-across-browsers/9090128#9090128
var transitionEndEventName = function() {
    var i;
    var el = document.createElement('div');
    var transitions = {
            'transition':'transitionend',
            'OTransition':'otransitionend', 
            'MozTransition':'transitionend',
            'WebkitTransition':'webkitTransitionEnd'
        };

    for (i in transitions) {
        if (transitions.hasOwnProperty(i) && el.style[i] !== undefined) {
            return transitions[i];
        }
    }
}

var transitionEnd = transitionEndEventName();