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- var prevScrollpos = window.pageYOffset;
- window.onscroll = function() {
- var currentScrollPos = window.pageYOffset;
- if (prevScrollpos > currentScrollPos) {
- document.getElementById("navbar").style.top = "0";
- } else {
- document.getElementById("navbar").style.top = "-50px";
- }
- prevScrollpos = currentScrollPos;
- }
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