function showMenu(id)
{
	var menu = document.getElementById('menu' + id);
	var submenu = document.getElementById('submenu' + id);
	if (submenu.style.display == 'none' || submenu.style.display == ' ')
	{
		menu.className = 'menuOpen';
		submenu.style.display = 'block';
	}
	else
	{
		menu.className = 'menuClose';
		submenu.style.display = 'none';
	}
}