function startmenu()
{
	document.getElementById('menu1').style.display = "none";
	document.getElementById('menu2').style.display = "none";
	document.getElementById('menu3').style.display = "none";
	document.getElementById('menu4').style.display = "none";
	document.getElementById('menu5').style.display = "none";
}

function menufunc(menuId)

{
	if(document.getElementById(menuId).style.display == "none")
	{
		startmenu();
		document.getElementById(menuId).style.display = "block";
	}
	else
	{
		startmenu();
	}
}