function hideMenus(e) {
	document.getElementById("categories_menu").style.visibility = "hidden";
	document.getElementById("artists_menu").style.visibility = "hidden";
}

function showMenu(id) {
	document.body.onclick = "";
	setTimeout("document.body.onclick = hideMenus", 500);
	document.getElementById(id).style.visibility = "visible";
	return false;
}

document.body.onclick = hideMenus;