Made animframe_polyfill.js JSHint compliant

Reformatted a bunch to make JSHint happy.

js/animframe_polyfill.js

-(function() {
+(function () {
   var lastTime = 0;
   var vendors = ['webkit', 'moz'];
-  for(var x = 0; x < vendors.length && !window.requestAnimationFrame; ++x) {
-    window.requestAnimationFrame = window[vendors[x]+'RequestAnimationFrame'];
-    window.cancelAnimationFrame =
-    window[vendors[x]+'CancelAnimationFrame'] || window[vendors[x]+'CancelRequestAnimationFrame'];
+  for (var x = 0; x < vendors.length && !window.requestAnimationFrame; ++x) {
+    window.requestAnimationFrame = window[vendors[x] + 'RequestAnimationFrame'];
+    window.cancelAnimationFrame = window[vendors[x] + 'CancelAnimationFrame'] ||
+      window[vendors[x] + 'CancelRequestAnimationFrame'];
   }
 
   if (!window.requestAnimationFrame) {
-    window.requestAnimationFrame = function(callback, element) {
+    window.requestAnimationFrame = function (callback) {
       var currTime = new Date().getTime();
       var timeToCall = Math.max(0, 16 - (currTime - lastTime));
-      var id = window.setTimeout(function() { callback(currTime + timeToCall); },
+      var id = window.setTimeout(function () {
+        callback(currTime + timeToCall);
+      },
       timeToCall);
       lastTime = currTime + timeToCall;
       return id;
@@ -19,7 +21,7 @@
   }
 
   if (!window.cancelAnimationFrame) {
-    window.cancelAnimationFrame = function(id) {
+    window.cancelAnimationFrame = function (id) {
       clearTimeout(id);
     };
   }