var iTimeoutID;

function showMenu(MenuID) {
	clearTimeout(iTimeoutID);
	if (document.getElementById('subMenu' + MenuID)) {
		changeStyle = document.getElementById('subMenu' + MenuID);
		changeStyle.style.visibility='visible';
	}
}	

function delayMenuHide(MenuID) {
	iTimeoutID = setTimeout("hideMenu(" + MenuID + ")",500);
}

function hideMenu(MenuID) {
	if (document.getElementById('subMenu' + MenuID)) {
		changeStyle = document.getElementById('subMenu' + MenuID);
		changeStyle.style.visibility='hidden';
	}
}

function hideAllSubMenus() {
	var scanDivs=document.getElementsByTagName("div");
	for (i=0;i<scanDivs.length;i++) {
		if (scanDivs[i].id.search('subMenu')==0) {
			scanDivs[i].style.visibility='hidden'
		}
	}
}