code: function() {
  				// Webkit requires to blur any previous focused page element, in
  				// order to properly fire the "focus" event.
  				if ( CKEDITOR.env.webkit ) {
  					var active = CKEDITOR.document.getActive();
  					active && !active.equals( this._.iframe ) && active.$.blur();
  				}
  
  				// Restore last focused element or simply focus panel window.
  				var focus = this._.lastFocused || this._.iframe.getFrameDocument().getWindow();
  				focus.focus();
  			}
docs: Restores last focused element or simply focus panel window.