function hidall(exept) {
	for (i = 0; i <= 5; ++i) {
		nbr = i;
		if (nbr != exept && document.getElementById('m'+nbr))
			document.getElementById('m'+nbr).style.display = 'none';
	}
}
function openhmnu(num, act) {
	act = act ? 'block':'none';
	hidall(num);
	document.getElementById('m'+num).style.display = act;
	return true;
}