window.onload = initAll;

function initAll() {
var nav = document.getElementById("myGallery");
	var allLinks = document.getElementsByTagName("a");
	
	for (var i=0; i<allLinks.length; i++) {
		if (allLinks[i].className.indexOf("open") > -1) {
			allLinks[i].onclick = toggleMenu;
		}
	}
	
}

function toggleMenu() {
	var startMenu = this.href.lastIndexOf("#")+1;
	var thisMenuName = this.href.substring(startMenu);
	var descrDiv = document.getElementsByTagName("div");
	
	for (var i=0; i<descrDiv.length; i++) {
		if (descrDiv[i].className == "description") {
			descrDiv[i].style.display = "none";
		}
	}
	var thisMenu = document.getElementById(thisMenuName);
	if (thisMenu.style.display == "block")  {
		thisMenu.style.display = "none";
	}
	else {
		thisMenu.style.display = "block";
	}
	
	return false;
}