function menu(menuId, submenu, subsubmenu)
{	
	var menu = document.getElementById(menuId);
	var submenuList;
	
	if(subsubmenu != '') {
		submenuList = document.getElementsByClassName(subsubmenu);
	
		for(i = 0; i < submenuList.length; i++) {	
			submenuList[i].style.display = 'none';
		}
	}
	submenuList = document.getElementsByClassName(submenu);
	
	for(i = 0; i < submenuList.length; i++) {
		if(submenuList[i].id != menuId && submenuList[i].id != submenu )
			submenuList[i].style.display = 'none';
	}
	
	if (menu.style.display == 'none')
		menu.style.display = 'block';
	else
		menu.style.display = 'none';
}

function showMenu(nadnadmenuId, nadmenuId, menuId)
{	
	var menu;
	menu = document.getElementById("submenu_"+menuId);
	if (menu != null)
		menu.style.display = 'block';
		
	menu = document.getElementById("subsubmenu_"+menuId);
	if (menu != null)
		menu.style.display = 'block';		
	
	menu = document.getElementById("submenu_"+nadmenuId);
	if (menu != null)
		menu.style.display = 'block';
	else
	{
		menu = document.getElementById("submenu_"+nadnadmenuId);
		if (menu != null)
			menu.style.display = 'block';
		
		menu = document.getElementById("subsubmenu_"+nadmenuId);
		if (menu != null)
			menu.style.display = 'block';
	}
}