function hid(i)
{
	var el = document.getElementById('submenu_' + i);
	el.style.display = 'none';
}

function vis(i)
{
    if (i == 0) return;
	var el = document.getElementById('submenu_' + i);
	el.style.display = 'block';
}

function hid_all()
{
	hid(1); hid(2); hid(3); hid(4);
}

window.setTimeout('hid_all(); vis(' + visible_submenu + ');', 30);