function showmenu(menu, menuclose) {
	if(menuclose==true) {
		closemenu('0');
	}
	document.getElementById("menu"+menu).style.visibility="visible";
}

function closemenu(menu) {
	if (menu=='0') {
		document.getElementById("menu1").style.visibility="hidden";
		document.getElementById("menu2").style.visibility="hidden";
		document.getElementById("menu3").style.visibility="hidden";
		document.getElementById("menu4").style.visibility="hidden";
		document.getElementById("menu5").style.visibility="hidden";
	} else if (menu!='0') {
		document.getElementById("menu"+menu).style.visibility="hidden";
	}
}

function closemenulong() {
	setTimeout("closemenu('0')",10000);
}