4 return function( elem ) {
6 // Support: IE <=11 only, Firefox <=30 (#15098, #14150)
7 // IE throws on elements created in popups
8 // FF meanwhile throws on frame elements through "defaultView.getComputedStyle"
9 var view = elem.ownerDocument.defaultView;
11 if ( !view || !view.opener ) {
15 return view.getComputedStyle( elem );