function hilight(linkId, menuId, parentId){
	var menu = document.getElementById(menuId);
	menu.style.display = "block";
	
	if (parentId != null){
		var parentmenu = document.getElementById(parentId);
		parentmenu.style.display = "block";
	}
	
	if (parentmenu != null){
		parentmenu.style.display = "block";
	}
	
	if (linkId != ''){
		var hilite = document.getElementById(linkId);
		hilite.className = "hilight";
	}
}