function showMenu(id) {
	document.getElementById('secundar_'+id).style.visibility = 'visible';
	}
function hideMenu(id) {
	document.getElementById('secundar_'+id).style.visibility = 'hidden';
	}
function showSubMenu(menu, id) {
	document.getElementById('secundar_'+menu+'_'+id).style.visibility = 'visible';
	}
function hideSubMenu(menu, id) {
	document.getElementById('secundar_'+menu+'_'+id).style.visibility = 'hidden';
	}