docs: function (itemIndex) {
              var data = this._data;
              itemIndex = parseInt(itemIndex, 10); // it will most likely be a string before the conversion
              if (isNaN(itemIndex) || itemIndex < 0 || itemIndex > data.items.length) {
                  return; // ignore wrong values of itemIndex
              }
              var item = data.items[itemIndex];
              this._navigationEvent = true;
              var evt = {
                  name : "itemMouseOver",
                  index : itemIndex,
                  item : item,
                  value : item.value
              };
              this.$raiseEvent(evt);
          }