/* <![CDATA[ */
function showSubMenu(id) {
	var act = document.getElementById(id);
	for (var i = 1; i < 8; i++) {
		if (document.getElementById('nav_sub'+i)) {
			document.getElementById('nav_sub'+i).style.display='none';
		}
	}
	if (act) { act.style.display='block'; }
}
function hideSubMenu(id) {
	document.getElementById(id).style.display='none';
}
/* ]]> */