Index: pollfield.module
===================================================================
--- pollfield.module	(revision 256)
+++ pollfield.module	(working copy)
@@ -93,12 +93,14 @@
  * @return unknown
  */
 function theme_pollfield($element) {
- $fieldset = array(
+  $element['#attributes']['class'] .= ' pollfield-form';
+  
+  $fieldset = array(
     '#type' => 'fieldset',
     '#title' => $element['#title'],
-    '#collapsible' => TRUE,
-    '#collapsed' => TRUE,
-    '#attributes' => array('class' => 'pollfield-form'),
+    '#collapsible' => isset($element['#collapsible']) ? $element['#collapsible'] : TRUE,
+    '#collapsed' => isset($element['#collapsed']) ? $element['#collapsed'] : TRUE,
+    '#attributes' => $element['#attributes'],
     '#children' => $element['#children'],
   );
   return theme('fieldset', $fieldset);