onchange="valid_date(this, 'dmy')" >

'modifiers[' . $field_name . ']', 'id' => 'modifiers-' . $field_name, 'selected' => $modifier, 'options' => $name_options]) ?> 'modifiers[' . $field_name . ']', 'id' => 'modifiers-' . $field_name, 'selected' => $modifier, 'options' => $date_options]) ?>