Index: modules/book/book.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/book/book.module,v
retrieving revision 1.461
diff -u -F^f -r1.461 book.module
--- modules/book/book.module	25 Apr 2008 17:51:30 -0000	1.461
+++ modules/book/book.module	28 Apr 2008 07:36:24 -0000
@@ -332,7 +332,7 @@ function _book_parent_select($book_link)
   $form = array(
     '#type' => 'hidden',
     '#value' => -1,
-    '#prefix' => '<div id="edit-book-plid-wrapper">',
+    '#prefix' => '<div id="edit-book-plid-form-wrapper">',
     '#suffix' => '</div>',
   );
 
@@ -429,7 +429,7 @@ function _book_add_form_elements(&$form,
     '#attributes' => array('class' => 'book-title-select'),
     '#ahah' => array(
       'path' => 'book/js/form',
-      'wrapper' => 'edit-book-plid-wrapper',
+      'wrapper' => 'edit-book-plid-form-wrapper',
       'effect' => 'slide',
     ),
   );