window.onscroll = function() {scrollFunction()};
function scrollFunction() {
if (document.body.scrollTop > 100 || document.documentElement.scrollTop > 100) { document.getElementById("sidebar").classList.add('sidebar-minimised'); document.getElementById("sidebar").classList.remove('sidebar'); } else { document.getElementById("sidebar").classList.add('sidebar'); document.getElementById("sidebar").classList.remove('sidebar-minimised'); }
}