function init() {
	var menuID = ["m1","m2","m3"];
	for (var i in menuID)
	document.getElementById("s-"+menuID[i]).style.display = "none";
}
function mostra(id) {
	if (document.getElementById("s-"+id).style.display == "none") {
		init();
		document.getElementById("s-"+id).style.display = "block";
	}
	else init()
}
window.onload = function(e) { init() }