$(document).ready(function(){
		//veranderen van aantal personen
		$('select.aantalpersonen').change(function(){
				checkTaxiType();
		});	
		//veranderen van aantal koffers		
		$('select.aantalkoffers').change(function(){
				checkTaxiType();
		});			
});
function checkTaxiType(){
	personen=$('select.aantalpersonen').val();
	koffers=$('select.aantalkoffers').val();
	if(koffers>3 || personen>4){
		$('select.taxitype').val('Busje');
	}else{
		$('select.taxitype').val('Auto');
	}
}