function showMenu(id) {
	document.getElementById('secundar_'+id).style.visibility = 'visible';
	document.getElementById(id).style.backgroundPosition = "0 -30px";
	}

function hideMenu(id) {
	document.getElementById('secundar_'+id).style.visibility = 'hidden';
	document.getElementById(id).style.backgroundPosition = "0 0";
	}
function showSubMenu(menu, id) {
	document.getElementById('secundar_'+menu+'_'+id).style.visibility = 'visible';
	}

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