script>
document.addEventListener('DOMContentLoaded', function() {
document.addEventListener('scroll', function() {
let y = window.scrollY;
let menuhopin = document.getElementById('menuhopin');
if (y > 150) { /* change this value here to make it show up at your desired scroll location. */
menuhopin.classList.add('headershow');
} else {
menuhopin.classList.remove('headershow');
}
});
});