WordPress - Open fancybox on page with gallery and iframe in others

index.php

<ul>
    <?php wp_nav_menu(); ?>
</ul>

<div class="hidden-gallery">
<?php

function get_image_gallery_src( $post_id ) {
    $gallery = get_post_gallery( $post_id, false );
    $gallery_id = explode( ',', $gallery['ids'] );
    $result = array();
    foreach ( $gallery_id as $key => $value ) {
        $img = wp_get_attachment_image_src( $value, 'full' );
        array_push( $result, array(
            'title' => get_the_title( $value ),
            'src' => $img[0]
        ));
    }
    return $result;
}

$pages = get_pages(); // PEGA TODAS AS PÁGINAS
foreach ($pages as $key => $value) {
    $gallery = get_image_gallery_src( $value->ID );
    if ( $gallery[0]['src'] != '' ) {
        foreach ( $gallery as $key2 => $value2 ) {
            // CARREGA A GALERIA
            ?><a rel="galeria-<?php echo $value->ID ?>" class="galeria-<?php echo $value->ID ?> galeria" href="<?php echo $value2['src'] ?>"></a><?php
        }
        // ATIVA O FANCYBOX PARA O LINK QUE CONTÉM ALGUMA GALERIA
        ?>
        <script>
            $(function () {
                $('.menu li.page-item-<?php echo $value->ID ?> a').attr({'href':'#'});
                $('.menu li.page-item-<?php echo $value->ID ?> a').on('click',function () {
                    $('.galeria-<?php echo $value->ID ?>:eq(0)').trigger('click');
                })
            })
        </script>
        <?php
    } else {
        // ATIVA O FANCYBOX IFRAME SOMENTE NNAS PÁGINAS QUE NÃO TIVER GALERIA
        ?>
        <script>
            $(function() {
                $('.menu li.page-item-<?php echo $value->ID ?> a').fancybox({
                    type: 'iframe'
                });
            })
        </script>
        <?php
    }
}
?>
<script>
    $(function() {
        $('.galeria').fancybox({
            helpers:{
                thumbs:{}
            }
        });
    })
</script>