code: function(e) {
  
          // to minimize the control we set its div's width
          // and height to 0px, we cannot just set "display"
          // to "none" because it would hide the maximize
          // div
          this.div.style.width = "0px";
          this.div.style.height = "0px";
  
          this.showControls(true);
  
          if (e != null) {
              OpenLayers.Event.stop(e);
          }
      }
docs: Method: minimizeControl
  Hide all the contents of the control, shrink the size,
  add the maximize icon
  
  Parameters:
  e - {Event}