https://zatramvaj.org.ua/wp-content/plugins/my-calendar/js/mc-grid.js?ver=a27d9b2aee8c3510c20ddfc51f12d341

1(function ($) {
2    'use strict';
3    $(function () {
4        $(".calendar-event").children().not(".event-title").hide();
5        $(document).on("click", ".calendar-event .event-title",
6            function (e) {
7                e.preventDefault(); // remove line if you are using a link in the event title
8				var current_date = $(this).parent().children();
9                $(this).parent().children().not(".event-title").toggle().attr("tabindex", "-1");
10				$(this).parent().focus();
11				$(".calendar-event").children().not(".event-title").not( current_date ).hide();
12            });
13        $(document).on("click", ".calendar-event .close",
14            function (e) {
15                e.preventDefault();
16                $(this).closest(".vevent").find(".event-title a").focus();
17                $(this).closest("div.details").toggle();
18            });
19    });
20}(jQuery));