code: function () {
  
              var elementParent = this.element.parentNode,
                  originalElement = this.element,
                  wrapper = document.createElement("div");
  
              wrapper.className = Panel.CSS_PANEL_CONTAINER;
              wrapper.id = originalElement.id + "_c";
  
              if (elementParent) {
                  elementParent.insertBefore(wrapper, originalElement);
              }
  
              wrapper.appendChild(originalElement);
  
              this.element = wrapper;
              this.innerElement = originalElement;
  
              Dom.setStyle(this.innerElement, "visibility", "inherit");
          }
docs: END BUILT-IN PROPERTY EVENT HANDLERS // 
  Builds the wrapping container around the Panel that is used for
  positioning the shadow and matte underlays. The container element is
  assigned to a  local instance variable called container, and the
  element is reinserted inside of it.
  @method buildWrapper