code: function(e) {
          e.preventDefault();
  
          // Hide previous drops
          this.hide();
  
          // Toggle the menu
          var node = $(e.currentTarget),
              menu = this.loadElement(node);
  
          if (!menu.is(':shown')) {
              this.show(node);
  
          } else {
              this.hide();
          }
      }
docs: When a node is clicked, grab the target from the attribute.
  Validate the target element, then either display or hide.
  
  @param {jQuery.Event} e
  @private