$(document).ready(function() {
	$("[data-lightbox]").fancybox({
		loop: false,
		caption: function(instance, item) {
			const img = this.querySelector('img');
			let caption = img.getAttribute('alt') ?? '';

			if (item.type === 'image') {
				const download = this.getAttribute('data-original') ?? item.src;
				caption = (caption.length ? caption + '<br />' : '') + '<a href="' + download + '">Stáhnout obrázek</a>' ;
			}

			return caption;
		}
	});
});