Mine

<?php
function dojo_form_alter($form_id, &$form) {
  if ($form_id == 'page_node_form') {
    $form['#theme'] = 'dojo';
    $form['#validate'] = 'dojo_validate';
  }
}

functon theme_dojo($form) {
  $output = '<h1>I added this to the top of the form</h1>';
  unset($form['title']);
  $output .= drupal_render($form);
  return $output;
}

function dojo_validate($form_id, $form_values, $form) {
  print_r('hello!');
  exit;
}