//Script 1.01 9 November 2007 by Dave Howes, HowesComms, www.howescomms.co.uk. Copyright HowesComms 2007.

var navItemID = "";

function showMenu(theId) {
	if (navItemID) {
		clearMenu();
	}
	var lyrRef = document.getElementById(theId);
	lyrRef.style.display = "block";
	navItemID = theId;
}

function clearMenu() {
	var lyrRef = document.getElementById(navItemID);
	if (lyrRef) {
		lyrRef.style.display = "none";
		navItemID = "";
	}
}

document.onclick = clearMenu;