function submitForm() {
	var form = document.forms['adminForm'];

	var emailFilter=/^.+@.+\..{2,3}$/;	
	// do field validation
	if (form.contactpersoon.value == "") {
		alert( "Contactpersoon is verplicht." );
		return false;  
	} else if (form.adres.value == "") {
		alert( "Adres is verplicht." );
		return false;  
	} else if (form.postcode.value == "") {
		alert( "Postcode is verplicht." );
		return false;  
	} else if (form.woonplaats.value == "") {
		alert( "Woonplaats is verplicht." );
		return false;  
	} else if (form.telefoonnummer.value == "") {
		alert( "Telefoonnummer is verplicht." );
		return false;  
	//} else if (!(emailFilter.test(form.email.value))) { 
	//       alert( "Email is niet correct." );
	//	   return false;

	} else {
		form.submit();
	}
}