Index: includes/menu.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/menu.inc,v
retrieving revision 1.408
diff -u -p -r1.408 menu.inc
--- includes/menu.inc	1 Sep 2010 02:59:04 -0000	1.408
+++ includes/menu.inc	16 Sep 2010 03:49:52 -0000
@@ -2053,12 +2053,12 @@ function theme_menu_local_tasks() {
   $output = array();
 
   if ($primary = menu_primary_local_tasks()) {
-    $primary['#prefix'] = '<ul class="tabs primary">';
+    $primary['#prefix'] = '<h2 class="element-invisible">' . t('Primary tabs') . '</h2><ul class="tabs primary">';
     $primary['#suffix'] = '</ul>';
     $output[] = $primary;
   }
   if ($secondary = menu_secondary_local_tasks()) {
-    $secondary['#prefix'] = '<ul class="tabs secondary">';
+    $secondary['#prefix'] = '<h2 class="element-invisible">' . t('Secondary tabs') . '</h2><ul class="tabs secondary">';
     $secondary['#suffix'] = '</ul>';
     $output[] = $secondary;
   }
Index: themes/garland/page.tpl.php
===================================================================
RCS file: /cvs/drupal/drupal/themes/garland/page.tpl.php,v
retrieving revision 1.46
diff -u -p -r1.46 page.tpl.php
--- themes/garland/page.tpl.php	11 Sep 2010 05:01:19 -0000	1.46
+++ themes/garland/page.tpl.php	16 Sep 2010 03:49:52 -0000
@@ -47,8 +47,8 @@
             <h1<?php print $tabs ? ' class="with-tabs"' : '' ?>><?php print $title ?></h1>
           <?php endif; ?>
           <?php print render($title_suffix); ?>
-          <?php if ($tabs): ?><ul class="tabs primary"><?php print render($tabs) ?></ul></div><?php endif; ?>
-          <?php if ($tabs2): ?><ul class="tabs secondary"><?php print render($tabs2) ?></ul><?php endif; ?>
+          <?php if ($tabs): ?><h2 class="element-invisible"><?php print t('Primary tabs'); ?></h2><ul class="tabs primary"><?php print render($tabs) ?></ul></div><?php endif; ?>
+          <?php if ($tabs2): ?><h2 class="element-invisible"><?php print t('Secondary tabs'); ?></h2><ul class="tabs secondary"><?php print render($tabs2) ?></ul><?php endif; ?>
           <?php print $messages; ?>
           <?php print render($page['help']); ?>
           <?php if ($action_links): ?><ul class="action-links"><?php print render($action_links); ?></ul><?php endif; ?>
Index: themes/seven/page.tpl.php
===================================================================
RCS file: /cvs/drupal/drupal/themes/seven/page.tpl.php,v
retrieving revision 1.12
diff -u -p -r1.12 page.tpl.php
--- themes/seven/page.tpl.php	4 Jan 2010 03:57:19 -0000	1.12
+++ themes/seven/page.tpl.php	16 Sep 2010 03:49:52 -0000
@@ -9,11 +9,17 @@
       <h1 class="page-title"><?php print $title; ?></h1>
     <?php endif; ?>
     <?php print render($title_suffix); ?>
-    <?php if ($primary_local_tasks): ?><ul class="tabs primary"><?php print render($primary_local_tasks); ?></ul><?php endif; ?>
+    <?php if ($primary_local_tasks): ?>
+      <h2 class="element-invisible"><?php print t('Primary tabs'); ?></h2>
+      <ul class="tabs primary"><?php print render($primary_local_tasks); ?></ul>
+    <?php endif; ?>
   </div>
 
   <div id="page">
-    <?php if ($secondary_local_tasks): ?><ul class="tabs secondary"><?php print render($secondary_local_tasks); ?></ul><?php endif; ?>
+    <?php if ($secondary_local_tasks): ?>
+      <h2 class="element-invisible"><?php print t('Secondary tabs'); ?></h2>
+      <ul class="tabs secondary"><?php print render($secondary_local_tasks); ?></ul>
+    <?php endif; ?>
 
     <div id="content" class="clearfix">
       <?php if ($messages): ?>
Index: modules/overlay/overlay.tpl.php
===================================================================
RCS file: /cvs/drupal/drupal/modules/overlay/overlay.tpl.php,v
retrieving revision 1.3
diff -u -p -r1.3 overlay.tpl.php
--- modules/overlay/overlay.tpl.php	11 Jul 2010 22:03:45 -0000	1.3
+++ modules/overlay/overlay.tpl.php	16 Sep 2010 03:49:52 -0000
@@ -29,7 +29,7 @@
     <div id="overlay-close-wrapper">
       <a id="overlay-close" href="#" class="overlay-close"><span class="element-invisible"><?php print t('Close overlay'); ?></span></a>
     </div>
-    <?php if ($tabs): ?><ul id="overlay-tabs"><?php print render($tabs); ?></ul><?php endif; ?>
+    <?php if ($tabs): ?><h2 class="element-invisible"><?php print t('Primary tabs'); ?></h2><ul id="overlay-tabs"><?php print render($tabs); ?></ul><?php endif; ?>
   </div>
   <div id="overlay-content"<?php print $content_attributes; ?>>
     <?php print $page; ?>