--- /dev/null
+define(function() {
+ return function( elem ) {
+ // Support: IE<=11+, Firefox<=30+ (#15098, #14150)
+ // IE throws on elements created in popups
+ // FF meanwhile throws on frame elements through "defaultView.getComputedStyle"
+ if ( elem.ownerDocument.defaultView.opener ) {
+ return elem.ownerDocument.defaultView.getComputedStyle( elem, null );
+ }
+
+ return window.getComputedStyle( elem, null );
+ };
+});