var sub_actif = new Array();

function ShowSubMenu(idp, positionp, levelp) {
	i = 0; 
	sub_actif_length = sub_actif.length;

	if (document.getElementById) {
		subb = document.getElementById('sub_' + idp ).style;
	}

	HideSubMenu(levelp);

	subb.visibility = "visible";
	sub_actif.push(idp);
}

function HideSubMenu(levelp) {
	for (i=sub_actif.length-1; i>=levelp; i--) {
		document.getElementById('sub_' + sub_actif[i] ).style.visibility = "hidden";
		sub_actif.pop();
	}
}

function HideAll() {
	HideSubMenu(0);
}

document.onclick = HideAll;