Print Drupal status messages using AHAH

This is how to print out Drupal status messages when using AHAH.

<?php
  $output = theme('status_messages');
  //$output = theme('status_messages', "warning"); //if only "warning":s should be displayed.
  $output .= $my_other_output;
  drupal_json(array('status' => TRUE, 'data' => $output));
?>
Knowledge keywords: 
Drupal 6.x
AHAH