function controle()
    {
    var formulier = document.forms[0]
    if (!formulier.aantalblauw.value || (formulier.aantalblauw.value == '0' && formulier.aantalverrassing.value == '0'))
        {
        alert('Oooops.. You forgot aantal blauwe Foomps!');
        formulier.aantalblauw.focus()
        formulier.aantalblauw.style.borderColor = '#44f';
        return false;
        }
    if (!formulier.aantalverrassing.value || (formulier.aantalblauw.value == '0' && formulier.aantalverrassing.value == '0'))
        {
        alert('Oooops.. You forgot aantal verrassings Foomps!');
        formulier.aantalverrassing.focus()
        formulier.aantalverrassing.style.borderColor = '#44f';
        return false;
        }
    document.forms[0].submit();
    return true;
    }