diff -urp old/tabs.module new/tabs.module
--- old/tabs.module	2008-03-29 16:37:28.000000000 +0300
+++ new/tabs.module	2008-06-15 19:13:47.125000000 +0300
@@ -125,7 +125,7 @@ function theme_tabset($element) {
   $output .= '<ul class="anchors">';
   foreach (element_children($element) as $key) {
     if ($element[$key]['#type'] && $element[$key]['#type'] == 'tabpage') {
-      $output .= '<li'. drupal_attributes($element[$key]['#attributes']) .'><a href="#tabs-'. $element['#tabset_name'] .'-'. $element[$key]['#index'] .'">'. $element[$key]['#title'] .'</a></li>';
+      $output .= '<li'. drupal_attributes($element[$key]['#attributes']) .'><a href="#tabs-'. $element['#tabset_name'] .'-'. $element[$key]['#index'] .'"><span class="tab">'. $element[$key]['#title'] .'</span></a></li>';
     }
   }
   $output .= '</ul>';