--- tabs.js.orig	2009-08-19 17:02:24.000000000 +0200
+++ tabs.js	2009-09-15 12:43:20.984375000 +0200
@@ -4,7 +4,7 @@ Drupal.behaviors.tabs = function (contex
   // Set the active class to the first tab with an form error.
   $('.drupal-tabs ul').children('li').each( function() {
     if ($($(this).find('a').attr('href')).find('div.form-item .error:first').size()) {
-      $(this).addClass('error').addClass('active');
+      $(this).addClass('error').addClass(Drupal.settings.tabs.activeclass);
     }
   });
 
@@ -26,12 +26,12 @@ Drupal.behaviors.tabs = function (contex
     })
     .find('> ul')
     .each(function () {
-      var href = $(this).find('li.active:first a').attr('href');
+      var href = $(this).find('li.' + Drupal.settings.tabs.activeclass + ':first a').attr('href');
       selected = href ? href.substring(href.indexOf('#')) : 1;
     })
     .tabs({
       select: selected,
-      selectedClass: 'active',
+      selectedClass: Drupal.settings.tabs.activeclass,
       fx: fx
     })
     .addClass('tabs')