How to fix a bug with closing the window, if you click on the calendar inside it?

I have code in my code that closes the window when I click outside the window, but the trouble is that inside this window there is a calendar that is needed for work, so when you click on this calendar, the window closes and trouble happens!

How to fix?

Bug:

Window closing code:

$(document).mouseup(function (e){ // событие клика по веб-документу if (!modal_content.is(e.target) // если клик был не по нашему блоку && modal_content.has(e.target).length === 0) { // и не по его дочерним элементам $modal.find('.modal-body').empty().end(); mcloced(addclassmodal); } });