Function startModal

codebase/sources/dhtmlxscheduler.es.js:12267–12271

(box)

      }, 1);
    }
    function startModal(box) {
      scheduler2.eventRemove(box, "keydown", trapFocus);
      scheduler2.event(box, "keydown", trapFocus);
      modalsStack.push(box);
    }
    function endModal() {
      var box = modalsStack.pop();
      if (box) {