if (this.instance.wtScrollbars.vertical.scrollHandler === window) {
    var box = this.instance.wtTable.hider.getBoundingClientRect();
    overlayContainer.style.top = Math.ceil(box.top, 10) + 'px';
    overlayContainer.style.height = Handsontable.Dom.outerHeight(this.clone.wtTable.TABLE) + 'px';
  }