Mine

function _answer_questions_form_submit($form_id, $form_values){
  // When not submitting ... continue
  if( $form_values['op']!= t('Submit')){
    return;
  }

  _answer_save_form_values( $form_values);

  drupal_set_message( t('Your form is submitted'));
  //drupal_goto( 'node/' . $form_values[q_qid]);
}