code: function(e) {
          this.element.style.display = '';
          this.showToggle(false);
          if (e != null) {
              OpenLayers.Event.stop(e);                                            
          }
      }
docs: Method: maximizeControl
  Unhide the control.  Called when the control is in the map viewport.
  
  Parameters:
  e - {<OpenLayers.Event>}