(function ($) {
    $(function () {

        var $banner = $('.highlight-banner');
        if ($banner.length) {
            var $overlay = $('.highlight-overlay');
            var $header = $banner.find('.highlight-banner__header');

            $overlay.on('click.anhb', function () {
                $header.trigger('click.anhb');
            });

            $header.on('click.anhb', function () {
                $overlay.toggleClass('highlight-overlay--active');
                $banner.toggleClass('highlight-banner--open');
            });

            var $window = $(window);
            var f = $(".back-to-top"),
                g = 2 * $window.height();
            $window.on('scroll.anhb', _.throttle(function () {
                $window.scrollTop() >= g ? (f.hasClass("active") || f.addClass("active"),
                        $banner.addClass("highlight-banner--hidden")).removeClass('highlight-banner--open') : (f.hasClass("active") && f.removeClass("active"),
                        $banner.removeClass("highlight-banner--hidden"));
            }, 500));
            $window.trigger('scroll.anhb');
        }


    });
})(jQuery);