function reset_all_home(except) {
	do_reset(except, 'submenu_home');
}

function reset_all(except) {
	do_reset(except, 'submenu');
}

function do_reset(except, target) {
	for(i = 1; i <= 5; i++) {
		layer_name = target + i;
		if (except != layer_name) MM_findObj(layer_name).style.visibility = 'hidden';
	}
}

function menuhome_show(which) {
	reset_all_home(which);
	MM_findObj(which).style.visibility = 'visible';
}

function menu_show(which) {
	reset_all(which);
	MM_findObj(which).style.visibility = 'visible';
}