function popup_masonry_gallery() {
?>
<script type="text/javascript">
(function($){
$(window).load(function(){
  $('.av-masonry a.av-masonry-entry.lightbox-added').magnificPopup({
    type: 'image',
    image: {
        titleSrc: false,
        markup: '<div class="mfp-figure">'+
                  '<div class="mfp-close"></div>'+
                  '<div class="mfp-top-bar">'+
                    '<div class="mfp-title"></div>'+
                  '</div>'+
                  '<div class="mfp-img"></div>'+
                  '<div class="mfp-bottom-bar">'+
                    '<div class="mfp-description">'+
                      '<div class="mfp-alt"></div>'+
                      '<div class="mfp-caption"></div>'+
                    '</div>'+
                    '<div class="mfp-counter"></div>'+
                  '</div>'+
                '</div>',
        },
    mainClass:            'avia-popup mfp-zoom-in mfp-image-loaded',
    closeOnContentClick:  false,
    midClick:             true,

    gallery: {
      enabled:            true
    },

    callbacks: {
      markupParse: function (template, values, item) {
        values.title = item.el.attr('title') !== "" ? '<h2>' + item.el.attr('title') + '</h2>' : '';
      },

      change: function() {
        var AltItem = $(this.currItem.el).find('img').attr('alt') !== "" ? $(this.currItem.el).find('img').attr('alt') : '';
        var CaptionItem = $(this.currItem.el).find('.av-masonry-entry-content').length > 0 ? $(this.currItem.el).find('.av-masonry-entry-content').html() : '';

          $(this.content).find('.mfp-alt').html(AltItem);
          $(this.content).find('.mfp-caption').html(CaptionItem);
      },



      /*** if you like to have the arrows inside the container
      buildControls: function() {
        // re-appends controls inside the main container
        this.arrowLeft.appendTo(this.contentContainer);
        this.arrowRight.appendTo(this.contentContainer);
      },
      *** remove these two lines with asterisk ******/

    },
  });
  // close the iframe window

  $(document).on('click', '.popup-modal-dismiss', function (e) {
    $.magnificPopup.close();
  });
});
})(jQuery);
</script>
<?php }}
add_action('wp_footer', 'popup_masonry_gallery');