function scrollOut() { // prevent scroll when tweening scroll
    var targets = getScrollTargets.call(this);

    if ('scroll' in this.valuesEnd && targets.el.scrolling) {
      targets.el.scrolling = 0;
      toggleScrollEvents('removeEventListener', targets.el);
      targets.st.style.pointerEvents = '';
    }
  }
Action performed when scroll animation ends.