spareroom-keyboard-

jQuery(document).ready(function($) {
  $(document).on('keyup', function(e) {
    if ( $('.lightbox').is(':visible') ) {
      if ( e.which === 37 ) {
        $('.gallery_prev').trigger('click');
      } else if ( e.which === 39 ) {
        $('.gallery_next').trigger('click');
      }
    }
  })
});