Index: modules/node.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/node.module,v
retrieving revision 1.527
diff -u -r1.527 node.module
--- modules/node.module	2 Sep 2005 02:11:41 -0000	1.527
+++ modules/node.module	12 Sep 2005 21:07:06 -0000
@@ -1299,6 +1299,9 @@
  * Generate the node editing form.
  */
 function node_form($edit) {
+  // Add warning to user if they are about to navigate away after making changes to node form
+  drupal_add_js('misc/formcheck.js');
+  
   // Validate the node if we don't already know the errors.
   if (!$edit->validated) {
     $edit = node_validate($edit);
@@ -1405,7 +1408,7 @@
     }
   }
 
-  $attributes = array('id' => 'node-form');
+  $attributes = array('id' => 'node-form','onsubmit' => 'isSubmit=true;');
   if (is_array($param['options'])) {
     $attributes = array_merge($param['options'], $attributes);
   }