core.js
// toggle navigation pane, detect if hidden or not
toggle navigation pane, detect if hidden or not
toggle navigation pane detect if hidden or not
function toggleNav() {
  if (nav.hidden) {
    openNav()
    nav.hidden = false
  } else {
    closeNav()
    nav.hidden = true
  }
}
function toggleNav ( ) { if ( nav . hidden ) { openNav ( ) nav . hidden = false } else { closeNav ( ) nav . hidden = true } }
toggle navigation pane, detect if hidden or not
toggle navigation pane detect if hidden or not