--- domain_nav.module	2009-01-28 11:09:03.000000000 -0600
+++ domain_nav.module	2009-01-28 11:49:35.000000000 -0600
@@ -250,7 +250,7 @@ function theme_domain_nav_menus($options
     (isset($value['active'])) ? $active = 'active' : $active =  '';
     $items[] = array(
       'data' => l($value['sitename'], $value['path']),
-      'class' => $active
+      'class' => "domain-id-".$value['domain_id'] . " " . $active
     );
   }
   return theme('item_list', $items, NULL, 'ul', array('class' => 'tabs primary'));