$.nette.ext('fancybox', {
    init: function () {
        this.open($('body')); // otevře fancybox při načtení stránky
    },
    success: function (payload) {
        var snippets;
        if (!payload.snippets || !(snippets = this.ext('snippets'))) return;

        for (var id in payload.snippets) {
            this.open(snippets.getElement(id));
        }
    }
}, {
    open: function (el) {
        el.find('.fancybox').each(function () {
            $.fancybox.open($(this));
        });
    }
});