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

    // Here You can type your custom JavaScript...

    var header = document.getElementById("site-navigation");
    if (header) {
        window.onscroll = function () {
            myFunction()
        };
        var sticky = header.offsetTop;

        function myFunction() {
            if (window.pageYOffset > sticky) {
                header.classList.add("aft-sticky-navigation");
            } else {
                header.classList.remove("aft-sticky-navigation");
            }
        }
    }


});

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

    var didScroll;
    var lastScrollTop = 0;
    var delta = 5;
    var navbarHeight = $('#site-navigation').outerHeight();

    $(window).on('scroll', function (event) {
        didScroll = true;
    });

    setInterval(function () {
        if (didScroll) {
            hasScrolled();
            didScroll = false;
        }
    }, 250);

    function hasScrolled() {
        var st = $(this).scrollTop();

        // Make sure they scroll more than delta
        if (Math.abs(lastScrollTop - st) <= delta)
            return;

        // If they scrolled down and are past the navbar, add class .nav-up.
        // This is necessary so you never see what is "behind" the navbar.
        if (st > lastScrollTop && st > navbarHeight) {
            // Scroll Down
            $('#site-navigation').removeClass('nav-down').addClass('nav-up');
        } else {
            // Scroll Up
            if (st + $(window).height() < $(document).height()) {
                $('#site-navigation').removeClass('nav-up').addClass('nav-down');
            }
        }

        lastScrollTop = st;
    }

});