fredboniface.co.uk/js/navbar.js

function inflateSidebar() {
  document.getElementById("sidebar").style.width = "150px";
}

function collapseSidebar() {
  document.getElementById("sidebar").style.width = "0px";
}

function sidebarToggle() {
  var bar = document.getElementById("sidebar");
  if (bar.style.height === "0px") {
    bar.style.height = "100%";
    bar.style.display = "block";
  } else {
    bar.style.height = "0px";
    bar.style.display = "none";
  }
}