function showMenu(menu)
{
	document.getElementById("menusub-" + menu).style.top = document.getElementById("menusub-" + menu).style.top + 20;
}

function hideMenu(menu)
{
	document.getElementById("menusub-" + menu).className = "menu-sub1";
	document.getElementById("menusub-" + menu).style.top = 20;
	
}