code: function() {
          for (var l=this.div.childNodes.length, i=l-1; i>=0; i--) {
              this.div.removeChild(this.div.childNodes[i]);
          }
          this.div.innerHTML = "";
          if (this.active) {
              for (var i=0, len=this.controls.length; i<len; i++) {
                  this.div.appendChild(this.controls[i].panel_div);
              }
          }
      }
docs: Method: redraw