function get_custom_background_image($post_id = null)
{
    $images = [];
    // If post id is provided and that post has an image set
    if ($post_id && current_theme_supports('post-thumbnails') && has_post_thumbnail($post_id)) {
        // Set the body background image
        $page_bg_image = wp_get_attachment_image_src(get_post_thumbnail_id($post_id), 'full');
        $images['bg_image_url'] = $page_bg_image[0];
        // Set the content image to a custom thumbnail size
        $page_inner_image = wp_get_attachment_image_src(get_post_thumbnail_id($post_id), 'inner_image');
        $images['inner_image_url'] = $page_inner_image[0];
    } else {
        if (is_school_page() && get_field('event_background_image', 'option')) {
            $image = get_field('event_background_image', 'option');
            // Set the body background image
            $images['bg_image_url'] = $image["sizes"]["large"];
            // Set the content image to a custom thumbnail size
            $images['inner_image_url'] = $image["sizes"]["large"];
        } else {
            if (is_search() && get_field('search_background_image', 'option')) {
                $image = get_field('search_background_image', 'option');
                // Set the body background image
                $images['bg_image_url'] = $image["sizes"]["large"];
                // Set the content image to a custom thumbnail size
                $images['inner_image_url'] = $image["sizes"]["large"];
            } else {
                if (!is_front_page()) {
                    $images['bg_image_url'] = get_template_directory_uri() . '/dist/images/home/slide01.jpg';
                    $images['inner_image_url'] = get_template_directory_uri() . '/dist/images/home/slide01.jpg';
                }
            }
        }
    }
    return $images;
}
            ?>
">
			</a>
			<?php 
        } else {
            ?>
			<img src="<?php 
            the_field('ad_image', $top_level_parent_id);
            ?>
">
			<?php 
        }
        ?>

		<?php 
    } elseif (is_school_page()) {
        ?>

			<?php 
        if (get_field('events_ad_url', 'option')) {
            ?>
			<a href="<?php 
            the_field('events_ad_url', 'option');
            ?>
" target="_blank">
				<img src="<?php 
            the_field('events_ad_image', 'option');
            ?>
">
			</a>
			<?php