code: function refreshScrollbarsInteractive(isTrack, value) {
                      var action = value ? 'removeClass' : 'addClass';
                      var element1 = isTrack ? _scrollbarHorizontalTrackElement : _scrollbarHorizontalHandleElement;
                      var element2 = isTrack ? _scrollbarVerticalTrackElement : _scrollbarVerticalHandleElement;
                      var className = isTrack ? _classNameScrollbarTrackOff : _classNameScrollbarHandleOff;
  
                      element1[action](className);
                      element2[action](className);
                  }
docs: Refreshes the interactivity of the given scrollbar element.
  @param isTrack True if the track element is the target, false if the handle element is the target.
  @param value True for interactivity false for no interactivity.