function expandNav() {
var x = document.getElementById("navbar"); var y = document.getElementById("navdrop"); var z = document.getElementById("navlist"); if (x.className === "site-nav") { x.className += " responsive"; } else { x.className = "site-nav"; } if (y.className === "dropdown") { y.className += " responsive"; } else { y.className = "dropdown"; } if (z.className === "dropdown-list") { z.className += " responsive"; } else { z.className = "dropdown-list"; }
}