$(window).load(
    function() {
        var cookie_name = $('#scroll_in_banner img').attr('src');
        if (!$.cookie(cookie_name)){
            $.cookie(cookie_name, true, { expires: 365 });
            var banner = $('#scroll_in_banner');
            if (banner.length > 0) {
                var zavrit = "<div id=\"scroll_in_banner_close\"><a href=\"#\">Zavřit</a></div>";
                banner.append(zavrit);
                var height = banner.height();
                banner.catfish({
                    closeLink: '#scroll_in_banner_close',
                    height: height
                });
            }
        }
    }
);