https://www.twodudes-brasserie.com/js/PLUGINS/requestAnimationFrame.js?vers=067384

1/**
2 * Request Animation Frame Polyfill.
3 * @author Tino Zijdel
4 * @author Paul Irish
5 * @see https://gist.github.com/paulirish/1579671
6 */
7;(function() {
8
9  var lastTime = 0;
10  var vendors = ['ms', 'moz', 'webkit', 'o'];
11
12  for(var x = 0; x < vendors.length && !window.requestAnimationFrame; ++x) {
13    window.requestAnimationFrame = window[vendors[x]+'RequestAnimationFrame'];
14    window.cancelAnimationFrame = window[vendors[x]+'CancelAnimationFrame'] || window[vendors[x]+'CancelRequestAnimationFrame'];
15  }
16
17  if (!window.requestAnimationFrame) {
18    window.requestAnimationFrame = function(callback, element) {
19      var currTime = new Date().getTime();
20      var timeToCall = Math.max(0, 16 - (currTime - lastTime));
21      var id = window.setTimeout(function() { callback(currTime + timeToCall); },
22        timeToCall);
23      lastTime = currTime + timeToCall;
24      return id;
25    };
26  }
27
28  if (!window.cancelAnimationFrame) {
29    window.cancelAnimationFrame = function(id) {
30      clearTimeout(id);
31    };
32  }
33
34}());