Index: modules/user/access_control.js
===================================================================
RCS file: modules/user/access_control.js
diff -N modules/user/access_control.js
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ modules/user/access_control.js	20 Oct 2006 12:36:39 -0000
@@ -0,0 +1,65 @@
+// $Id$
+
+// Initialize the variables
+Drupal.extend({ settings: { user: { accessControl: { } } } });
+
+/**
+ * Callback function that is attached to a change of a checkbox of the "authenticated user" column.
+ * It changes the state of all custom roles to either checked or the previous state.
+ */
+Drupal.accessControlToggle = function() {
+  var matches = this.id.match(/^edit-(\d+?)-(.*)$/i), roles = Drupal.settings.user.accessControl[matches[2]];
+  
+  for (var i in roles) {
+    var checkbox = document.getElementById('edit-' + i + '-' + matches[2]);
+    checkbox.disabled = this.checked;
+    checkbox.checked = this.checked ? true : roles[i];
+  }
+};
+
+/**
+ * Updates the status of a role in the array when the user changes the checkbox.
+ */
+Drupal.accessControlUpdate = function() {
+  var matches = this.id.match(/^edit-(\d+?)-(.*)$/i);
+  Drupal.settings.user.accessControl[matches[2]][matches[1]] = this.checked;
+}
+
+/**
+ * Stores the state of each checkbox before applying onchange handlers to each
+ * checkbox.
+ */
+Drupal.accessControlAttach = function() {
+  var settings = Drupal.settings.user.accessControl;
+  
+  $('#permissions input').each(function() {
+    var matches = this.id.match(/^edit-(\d+?)-(.*)$/i);
+    
+    if (matches[1] > 2) { // all custom roles
+      if (!settings[matches[2]]) settings[matches[2]] = {};
+      settings[matches[2]][matches[1]] = this.checked; 
+      $(this).change(Drupal.accessControlUpdate);
+    }
+  });
+  
+  $('#permissions input[@id^="edit-2-"]').each(function() {
+    $(this).change(Drupal.accessControlToggle);
+    Drupal.accessControlToggle.apply(this);
+  });
+  
+  $('#user_admin_perm').submit(function() {   
+    for (var role in settings) {
+      for (var i in settings[role]) {
+        var checkbox = document.getElementById('edit-' + i + '-' + role);
+        checkbox.checked = settings[role][i];
+        checkbox.disabled = false;
+      }
+    }
+  });
+};
+
+
+if (Drupal.jsEnabled) {
+  $(document).ready(Drupal.accessControlAttach);
+}
+
Index: modules/user/user.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/user/user.module,v
retrieving revision 1.692
diff -u -d -F^\s*function -r1.692 user.module
--- modules/user/user.module	18 Oct 2006 11:46:18 -0000	1.692
+++ modules/user/user.module	20 Oct 2006 12:36:45 -0000
@@ -1798,6 +1798,8 @@ function user_admin_perm($rid = NULL) {
   }
   $form['submit'] = array('#type' => 'submit', '#value' => t('Save permissions'));
 
+  drupal_add_js(drupal_get_path('module', 'user') .'/access_control.js', 'module');
+
   return $form;
 }