function hideMenu(i) {document.getElementById('menu'+i).style.display = "none";}
function openMenu(i) {document.getElementById('menu'+i).style.display = "block";}
function showMenu(i) {
		if (document.getElementById('menu'+i).style.display == "block")
			document.getElementById('menu'+i).style.display = "none";
		else
			document.getElementById('menu'+i).style.display = "block";
		return(true);
}