<!--function menuover(num) {	document.getElementById('content').style.visibility='hidden';	switch(num) {		case 1: 	document.getElementById('subnavigation1').style.display='block';					document.getElementById('subnavigation2').style.display='none';					document.getElementById('subnavigation3').style.display='none';					break;		case 2: 	document.getElementById('subnavigation1').style.display='none';					document.getElementById('subnavigation2').style.display='block';					document.getElementById('subnavigation3').style.display='none';					break;		case 3: 	document.getElementById('subnavigation1').style.display='none';					document.getElementById('subnavigation2').style.display='none';					document.getElementById('subnavigation3').style.display='block';					break;	}}function menuout(num) {	document.getElementById('subnavigation1').style.display='none';	document.getElementById('subnavigation2').style.display='none';	document.getElementById('subnavigation3').style.display='none';	document.getElementById('content').style.visibility='visible';}function checkform() {	var error = '';		if ((!document.forms[0].info1.checked) && (!document.forms[0].info2.checked)) {		error += '* Bitte kreuzen Sie mindestens ein Feld an\n';	}	if (document.forms[0].vorname.value == '') {		error += '* Vorname\n';	}	if (document.forms[0].nachname.value == '') {		error += '* Nachname\n';	}	if (document.forms[0].strasse_nr.value == '') {		error += '* Straße / Hausnummer\n';	}	if (document.forms[0].plz.value == '') {		error += '* Postleitzahl\n';	}	if (document.forms[0].ort.value == '') {		error += '* Ort\n';	}	if (document.forms[0].telefon.value == '') {		error += '* Telefon\n';	}	if (document.forms[0].email.value == '') {		error += '* Email\n';	}		if (error != '') {		error = 'Bitte füllen Sie folgende Felder aus:\n\n' + error;		alert(error);				return false;	}		return true;}//-->
