Fixes #712, Modal uses RequestAnimationFrame without doing browser normalization on the event

src/modules/modal.js

@@ -25,6 +25,12 @@ $.fn.modal = function(parameters) {
     methodInvoked   = (typeof query == 'string'),
     queryArguments  = [].slice.call(arguments, 1),
 
+    requestAnimationFrame = window.requestAnimationFrame
+      || window.mozRequestAnimationFrame
+      || window.webkitRequestAnimationFrame
+      || window.msRequestAnimationFrame
+      || function(callback) { setTimeout(callback, 0); },
+
     returnedValue
   ;