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- function hideNav(el, howMuch) {
- var prevScrollpos = window.pageYOffset;
- window.addEventListener('scroll', function () {
- var currentScrollPos = window.pageYOffset;
- if (prevScrollpos > currentScrollPos) {
- el.style.transform = 'translateY(0%)'
- } else {
- el.style.transform = 'translateY(' + howMuch + '%)'
- }
- prevScrollpos = currentScrollPos;
- });
- }
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