--- mailchimp.module    2009-04-08 14:13:55.000000000 -0400
+++ mailchimp.module.new        2009-04-08 14:16:02.000000000 -0400
@@ -138,6 +138,7 @@
             '#title'        => t('Newsletter subscriptions'),
             '#weight'       => 5,
             '#collapsible'  => TRUE,
+            '#attributes'   => array('class' => 'mailchimp-newsletters'),
           );
         $form['chimpmail_lists'] = array_merge( $form['chimpmail_lists'], $list_form );