--- nodetype.module	2008-03-23 07:48:34.000000000 -0700
+++ nodetype.module.update	2009-03-10 10:04:41.000000000 -0700
@@ -51,3 +51,19 @@ function nodetype_form_alter(&$form, $fo
     );
   }
 }
+
+function nodetype_node_operations() {
+  include_once(drupal_get_path('module', 'node').'/node.admin.inc');
+  $operations = array();
+  if (user_access('change node types')) {
+    $node_types = node_get_types();
+    foreach ($node_types as $type => $info) {
+      $operations['change-'. $type] = array(
+        'label' => t('Set type to @type', array('@type' => $info->name)),
+        'callback' => 'node_mass_update',
+        'callback arguments' => array('updates' => array('type' => $type)),
+      );
+    }
+  }
+  return $operations;
+}