function startmenu()
{
	document.getElementById('menu0').style.display = "none";
	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";
	document.getElementById('menu6').style.display = "none";
	document.getElementById('menu7').style.display = "none";
	document.getElementById('menu8').style.display = "none";
	document.getElementById('menu9').style.display = "none";
	document.getElementById('menu10').style.display = "none";
	document.getElementById('menu11').style.display = "none";
	document.getElementById('menu12').style.display = "none";
	document.getElementById('menu13').style.display = "none";
	document.getElementById('menu14').style.display = "none";
	document.getElementById('menu15').style.display = "none";
	document.getElementById('menu16').style.display = "none";
	document.getElementById('menu17').style.display = "none";
	document.getElementById('menu18').style.display = "none";
	document.getElementById('menu19').style.display = "none";
	document.getElementById('menu20').style.display = "none";
}

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