Multi-floor bootstrap modal windows

modals.multi.floor.bootstrap.js

var modalsOpened = 0,
    openedModalZIndex = 0,
    $currentModal = null;

$('.modal')
  .on('show.bs.modal', function(e) {
    
    $currentModal = $(e.delegateTarget);
  
    openedModalZIndex = $currentModal.css('z-index') + modalsOpened;

    $currentModal.css({
      zIndex : openedModalZIndex
    });

    modalsOpened++;
        
  })
  .on('hidden.bs.modal', function() {

    if (modalsOpened > 1) {
      $('body').addClass('modal-open');
    }

    openedModalZIndex--;
    modalsOpened--;
  });