document.querySelector('.modal__toolbar--full');
  var normalElem = document.querySelector('.modal__toolbar--normal');
  var captionElem = document.querySelector('.modal__caption');
  var pagingElem = document.querySelector('.modal__paging');
  var itemsElem = document.querySelector('.modal__items');
  var imgTotalNum = null;
  var myFadeTimeout = null;
  var mySwipe = null;
  var keydownFunction = function (e) {
    if (e.key === 'ArrowRight') {
      if (modal && modal.classList.contains('is-open')) {
   