function changeClass_on (naam){
	eval("navitem"+naam).className='navitem_hover';
}
function changeClass_off (naam){
	eval("navitem"+naam).className='navitem';
}

/*
function checkNaam(){
	if(document.forms[0].naam.value=="") {
		alert("Please fill in your full name");
		document.forms[0].naam.focus();
		return false;
	} return true;
}

function isTelefoon(inField){
	var acceptable="0123456789 +-";
	var ok=true;
	for(i=0;i<inField.length;i++){
		if(acceptable.indexOf(inField.charAt(i).toUpperCase())==-1){
			ok=false;
			break;
		} 
	}
	return (ok);
}

function checkTelefoon() {
	if(document.forms[0].telefoon.value=="") {
		alert("Please fill in your telephone number");
		document.forms[0].telefoon.focus();
		return false;
	}
	alerr('asda');
	return true;
}

function checkMail(){
	if(document.form1.email.value==""){
		alert("Please fill in a valid e-mail address");
		document.forms[0].email.focus();
		return false;
		}
	if(document.forms[0].email.value.indexOf('@')==-1 || document.forms[0].email.value.indexOf('@')==0 || document.forms[0].email.value.indexOf('@')==(document.forms[0].email.value.length-1)){
		alert("Please fill in a valid e-mail address");
		document.forms[0].email.focus();
		return false;
	}
	if(document.forms[0].email.value.indexOf('.')==-1 || document.forms[0].email.value.indexOf('.')==0 || document.forms[0].email.value.indexOf('.')==(document.forms[0].email.value.length-1)){
		alert("Please fill in a valid e-mail address");
		document.forms[0].email.focus();
		return false;
	}
	return true;
}

function verstuur(){
	if(!checkNaam()) return;
	if(!checkTelefoon()) return;
	if(!checkMail()) return;
	document.form1.submit();
}
*/
function inschrijvenbanner() {
	var adres=document.form_hp.emailadres.value;
	if(adres!=" < vul hier uw e-mailadres in >" && adres!=""){
		document.form_hp.action="inschrijven.php";
		document.form_hp.submit();
	} else {
	alert('Vul aub uw e-mailadres in');
	}
}

function maakleeg(){
if(document.form_hp.emailadres.value==" < vul hier uw e-mailadres in >"){
document.form_hp.emailadres.value="";
} 
if(document.form_hp.emailadres.value==" < Ihre Email-Adress >"){
document.form_hp.emailadres.value="";
} 
}