function hider() {
	switch (MenueNr) {
	case 0:
	//da ersteraufruf, nichts machen
	break;
	case 1:
	document.getElementById('submenueHover').id='submenue1';
	break;
	case 2:
	document.getElementById('submenueHover').id='submenue2';
	break;
	case 3:
	document.getElementById('submenueHover').id='submenue3';
	break;
	case 4:
	document.getElementById('submenueHover').id='submenue4';
	break;
	case 5:
	document.getElementById('submenueHover').id='submenue5';
	break;
	case 6:
	document.getElementById('submenueHover').id='submenue6';
	break;
	case 7:
	document.getElementById('submenueHover').id='submenue7';
	break;
	case 8:
	document.getElementById('submenueHover').id='submenue8';
	break;
	case 9:
	document.getElementById('submenueHover').id='submenue9';
	break;
	case 10:
	document.getElementById('submenueHover').id='submenue10';
	break;
	case 11:
	document.getElementById('submenueHover').id='submenue11';
	break;
	case 12:
	document.getElementById('submenueHover').id='submenue12';
	break;
	default:
	// nichts machen
	} 
	return MenueNr;
}