function writeL(lay,tekst){
lay.innerHTML = tekst;
}

function checkForm(frm){
var ok = 0;
if (!check_email(frm.email.value)) {
	 changeCl("email",false);
	 ok=1;
	
}
else{ 
	changeCl("email",true);
}

(checkField("naam"))? '' : ok = 1;
(checkField("voornaam"))? '' : ok = 1;
(checkField("message"))? '' : ok = 1;

if(ok) { return false;}
else { return true;}
}

function checkContactform(frm){
if (checkForm(frm)){
	new Ajax.Request('/ajax/contactForm.php', {asynchronous:true, parameters:Form.serialize(frm),onSuccess: function(transport) {
				var response = transport.responseText || "no response text";
				var elem = $('contactform');
				writeL(elem,response);
			},
			onFailure: function(){ 
				alert('Something went wrong...') 
				}	
		}
		)
}		
return false;
}