function showMenu(id){
	if (document.getElementById(id).style.visibility == "visible") {
		document.getElementById(id).style.visibility = "hidden";
		document.getElementById(id).style.position = "absolute";
	}
	else {
		document.getElementById(id).style.visibility="visible";
		document.getElementById(id).style.position="relative";
	}
}

function revealMenu(id){
	document.getElementById(id).style.visibility = "visible";
	document.getElementById(id).style.position = "relative";
}