var hamburger = document.getElementById("hamburger");

hamburger.onclick = function() {
	nav = document.getElementById("nav");
	hidden = document.getElementById("hamburger");
	/* alert(nav.style.display); */
	if (nav.style.display != "block") { /* May not be "none" the first time. */
		nav.style.display = "block";
		this.innerHTML = "Hide Menu"; 
	} else { 
		nav.style.display = "none"; 
		this.innerHTML = "Show Menu"; 
	}
}