// THIS FUNCTION SHOWS/HIDES SUB-MENUS
function switchMenu(menuId) {
	if (document.getElementById(menuId).style.display=='none') {
		document.getElementById(menuId).style.display='block'; }
	else {
		document.getElementById(menuId).style.display='none'; }	}

// THIS FUNCTION HIDES THE SUB-MENUS WHEN THE PAGE LOADS
function hideMenus(menuIds) {
	for (x=0;x<menuIds.length;x++) {
		document.getElementById(menuIds[x]).style.display='none'; } }