le.top = '20px';
      }
      _makeUniqueId(node, id, suffix) {
        id = id.replace('-', '_');
        let uId = id + (suffix || '');
        return this.$.viewContainer.has('#' + uId) ?
          this._makeUniqueId(node, id, suffix ? ++suffix : 1) : uId;
      }

      _loadGridState() {
        var showGrid = true;
        if (localStorage) {
          if (localStorage.getItem("hideGrid") === "true") {
            showGrid = false;
          }
        }
        this.$.gridToggle.checked = showGrid;
 