function eventfinder_tax_control($val = '', $max = NULL) {
  $items = eventfinder_tax_data();
  $form = array(
    '#type' => 'select',
    '#title' => 'Search by Event Category',
    '#default_value' => $val,
    '#options' => $items,
    '#description' => t('Select event terms to filter by'),
    '#extra' => ($max ? ' size=' . $max . ' ' : ''),
    '#multiple' => $max,
  );
  return $form;
}