crm.fsf.org/20131203/files/sites/all/modules-new/civicrm/bower_components/jquery/src/css/var/isHidden.js

   1 define([
   2         "../../core",
   3         "../../selector"
   4         // css is assumed
   5 ], function( jQuery ) {
   6
   7         return function( elem, el ) {
   8                 // isHidden might be called from jQuery#filter function;
   9                 // in that case, element will be second argument
  10                 elem = el || elem;
  11                 return jQuery.css( elem, "display" ) === "none" || !jQuery.contains( elem.ownerDocument, elem );
  12         };
  13 });