sock.js

require(['domReady', 'jquery', 'jquery.smoothScroll'],
    function(domReady, $) {
        var toggleSock = function(e) {
            e.preventDefault();

            var $btnShowSockLabel = $(this).find('.copy-show');
            var $btnHideSockLabel = $(this).find('.copy-hide');
            var $sock = $('.wrapper-sock');
            var $sockContent = $sock.find('.wrapper-inner');

            if ($sock.hasClass('is-shown')) {
                $sock.removeClass('is-shown');
                $sockContent.hide('fast');
                $btnHideSockLabel.removeClass('is-shown').addClass('is-hidden');
                $btnShowSockLabel.removeClass('is-hidden').addClass('is-shown');
            } else {
                $sock.addClass('is-shown');
                $sockContent.show('fast');
                $btnHideSockLabel.removeClass('is-hidden').addClass('is-shown');
                $btnShowSockLabel.removeClass('is-shown').addClass('is-hidden');
            }

            $.smoothScroll({
                offset: -200,
                easing: 'swing',
                speed: 1000,
                scrollElement: null,
                scrollTarget: $sock
            });
        };

        domReady(function() {
            // toggling footer additional support
            $('.cta-show-sock').bind('click', toggleSock);
        });
    });