function navMOver(e) {
  document.getElementById(e).className += ' navselected'
}

function navMOut(e) {
  document.getElementById(e).className = 'navbutton'
}

function snMOver(e) {
  document.getElementById('sn'+e).className += ' sidenavselected'
}
function snMOut(e) {
  document.getElementById('sn'+e).className = 'sidenavbutton'
}
function navTo(url) {
  window.location = url
}