$('body').on(
    'click',
    'main .calendarScaffold tbody a[href^="javascript:;//"], main .calendarScaffold tbody input.visibilityToggle',
    function(e) {
        var loader = $('<div>').addClass('calendarScaffoldLoader');
        $('main .calendarScaffold div[id$="_Container"]').append(loader);
    }
);