Function startModal

codebase/sources/dhtmlxscheduler.js:12271–12275

(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) {