click/ scroll function

    (function ($) {
        $(document).ready(function () {

            let header = $('.cf_bal-header');

            // Check for first timers
            if (!sessionStorage.returnVisitor) {

                // No flag, this is the first visit.
                // Set a flag so that next time we know they have been here before.
                sessionStorage.returnVisitor = 'true';

                // Handle Hero image click.
                $('.cf_news_link').click(function () {
                    header.slideUp(600, function () {
                            $('body').removeClass('cf_bal-locked');
                    });
                });

                // Handle scrolling (this is our scroll jacker)
               $(window).on('scroll', function () {
                        ($(header).slideUp(600, function () {
                                $('body').removeClass('cf_bal-locked');
                        }))

                });


            } else {

                // Not our first time, hide header.
                header.hide();
                $('body').removeClass('cf_bal-locked');
            }

        });
    })(jQuery);