function checkForm(){
	var fieldsOK = true;
	var checksOK = true;
	var fields = document.getElementsByClassName('obligatory');
	for(i = 0; i < fields.length; i++){
		var curVal = "";
		curVal = fields[i].value;
		if(curVal == ''){
			fields[i].style.backgroundColor = '#FF00FF';					
			fieldsOK = false;
		}
		else
			fields[i].style.backgroundColor = '#FFF';
			
		
	}
	var checks = document.getElementsByClassName('check_obligatory');
	
	for(j = 0; j < checks.length; j++){
		if(!checks[j].checked){
			checks[j].style.backgroundColor = '#FF00FF';
			checksOK = false;
		}
	}
	
	if(!checksOK){
		alert('Niet akkoord met voorwaarden');
		return;
	}
	if(!fieldsOK){
		alert('Niet alle velden zijn ingevuld');
		return;
	}
	
	var form = document.forms;
	form[0].submit();
	
	
	
}