function handle_lightbox_groups(){
?>
<script>
(function($){
    $(document).ready(function() {
        
        // Automatically find all group-X classes (only with numbers)
        var groupNumbers = [];
        $('[class*="group-"]').each(function() {
            var classes = $(this).attr('class').split(/\s+/);
            $.each(classes, function(index, className) {
                var match = className.match(/^group-(\d+)$/);
                if(match && $.inArray(parseInt(match[1]), groupNumbers) === -1) {
                    groupNumbers.push(parseInt(match[1]));
                }
            });
        });
        
        // Exit script if no valid groups are present
        if(groupNumbers.length === 0) {
            return;
        }
        
        setTimeout(function() {
            
            // Exact Enfold settings from avia-snippet-lightbox.js
            var enfoldSettings = {
                type: 'image',
                mainClass: 'avia-popup mfp-zoom-in',
                tLoading: '',
                tClose: '',
                removalDelay: 300,
                closeBtnInside: true,
                closeOnContentClick: false,
                midClick: true,
                autoFocusLast: false,
                fixedContentPos: $('html').hasClass('av-default-lightbox-no-scroll'),
                image: {
                    titleSrc: function(item) {
                        var title = item.el.attr('title');
                        if(!title) {
                            title = item.el.find('img').attr('title');
                        }
                        if(!title) {
                            title = item.el.parent().next('.wp-caption-text').html();
                        }
                        if(typeof title != "undefined") {
                            return title;
                        }
                        
                        if(!$('body').hasClass('avia-mfp-show-alt-text')) {
                            return '';
                        }
                        
                        var alt = item.el.attr('alt');
                        if(typeof alt != "undefined") {
                            return alt;
                        }
                        
                        alt = item.el.find('img').attr('alt');
                        if(typeof alt != "undefined") {
                            return alt;
                        }
                        
                        return '';
                    }
                },
                gallery: {
                    tPrev: '',
                    tNext: '',
                    tCounter: '%curr% / %total%',
                    enabled: true,
                    preload: [1,1]
                },
                callbacks: {
                    beforeOpen: function() {
                        if(this.st.el && this.st.el.data('fixed-content')) {
                            this.fixedContentPos = true;
                        }
                        
                        var elementCustomClass = '';
                        if(this.st.el && this.st.el.data('custom_class')) {
                            elementCustomClass = this.st.el.data('custom_class').trim();
                        }
                        
                        if(elementCustomClass) {
                            this.st.mainClass += ' ' + elementCustomClass;
                        }
                    },
                    open: function() {
                        $.magnificPopup.instance.next = function() {
                            var self = this;
                            self.wrap.removeClass('mfp-image-loaded');
                            setTimeout(function() { $.magnificPopup.proto.next.call(self); }, 120);
                        };
                        
                        $.magnificPopup.instance.prev = function() {
                            var self = this;
                            self.wrap.removeClass('mfp-image-loaded');
                            setTimeout(function() { $.magnificPopup.proto.prev.call(self); }, 120);
                        };
                        
                        if(this.st.el && this.st.el.data('av-extra-class')) {
                            this.wrap.addClass(this.currItem.el.data('av-extra-class'));
                        }
                        
                        this.wrap.avia_swipe_trigger({prev:'.mfp-arrow-left', next:'.mfp-arrow-right'});
                    },
                    markupParse: function(template, values, item) {
                        if(typeof values.img_replaceWith == 'undefined' || typeof values.img_replaceWith.length == 'undefined' || values.img_replaceWith.length == 0) {
                            return;
                        }
                        
                        var img = $(values.img_replaceWith[0]);
                        
                        if(typeof img.attr('alt') != 'undefined') {
                            return;
                        }
                        
                        var alt = item.el.attr('alt');
                        if(typeof alt == "undefined") {
                            alt = item.el.find('img').attr('alt');
                        }
                        
                        if(typeof alt != "undefined") {
                            img.attr('alt', alt);
                        }
                        
                        return;
                    },
                    imageLoadComplete: function() {
                        var self = this;
                        setTimeout(function() { self.wrap.addClass('mfp-image-loaded'); }, 16);
                    },
                    change: function() {
                        if(this.currItem.el) {
                            var current = this.currItem.el;
                            
                            this.content.find('.av-extra-modal-content, .av-extra-modal-markup').remove();
                            
                            if(current.data('av-extra-content')) {
                                var extra = current.data('av-extra-content');
                                this.content.append("<div class='av-extra-modal-content'>" + extra + "</div>");
                            }
                            
                            if(current.data('av-extra-markup')) {
                                var markup = current.data('av-extra-markup');
                                this.wrap.append("<div class='av-extra-modal-markup'>" + markup + "</div>");
                            }
                        }
                    }
                }
            };
            
            // Initialize each found group
            $.each(groupNumbers, function(index, groupNum) {
                var groupSelector = '.group-' + groupNum + ' .lightbox-added';
                var $group = $(groupSelector);
                
                if($group.length) {
                    $group.magnificPopup('destroy');
                    $group.magnificPopup(enfoldSettings);
                }
            });

            $('.lightbox-added').not('[class*="group-"] .lightbox-added').each(function() {
                var $this = $(this);
                $this.magnificPopup('destroy');
                $this.magnificPopup(enfoldSettings);
            });
            
        }, 500);
    });
})(jQuery);
</script>
<?php
}
add_action('wp_footer', 'handle_lightbox_groups', 999);