(function ($){ 
var animating, lastTime = 0, vendors = ['ms', 'moz', 'webkit', 'o'] , requestAnimationFrame = window.requestAnimationFrame, cancelAnimationFrame = window.cancelAnimationFrame; 
for (; lastTime < _AN_Read_length('length', vendors) && !requestAnimationFrame; lastTime++ ){ 
requestAnimationFrame = window[vendors[lastTime] + "RequestAnimationFrame"]; 
cancelAnimationFrame = cancelAnimationFrame || window[vendors[lastTime] + "CancelAnimationFrame"] || window[vendors[lastTime] + "CancelRequestAnimationFrame"]; 
} 
function raf(){ 
if (animating) { 
requestAnimationFrame(raf); 
jQuery.fx.tick(); 
} 
} 
if (requestAnimationFrame) { 
window.requestAnimationFrame = requestAnimationFrame; 
window.cancelAnimationFrame = cancelAnimationFrame; 
jQuery.fx.timer = function (timer){ 
if (timer() && jQuery.timers.push(timer) && !animating) { 
animating = true ; 
raf(); 
} 
} 
; 
jQuery.fx.stop = function (){ 
animating = false ; 
} 
; 
} 
 else { 
window.requestAnimationFrame = function (callback, element){ 
var currTime = new Date().getTime(), timeToCall = Math.max(0, 16 - (currTime - lastTime)), id = _AN_Call_settimeout("setTimeout", window, function (){ 
callback(currTime + timeToCall); 
} 
, timeToCall); 
lastTime = currTime + timeToCall; 
return id; 
} 
; 
window.cancelAnimationFrame = function (id){ 
clearTimeout(id); 
} 
; 
} 
} 
(jQuery));