Rails spinoffs - Aug 2005 - Reordering lists dissociates nested input elements from form.

I am attempting to use drag and drop to reorder elements then submit the 
form to store the changes.  Each element (<li>) has text and a nested 
hidden input element.
The problem I am experiencing is that when the form is submitted any of 
the elements that have been moved are not submitted.  Inspecting the DOM 
shows that the inputs are still nested with the elements.  But for some 
reason they no longer seem to be associated with the form.  Am I doing 
something wrong or do the input elements need to be reassociated with 
the form?

Thanks in advance,
Richard.

:: Code Snippet ::

<form ...>
<ul id="selected" >
  <c:forEach var="item"
items="${search.filter.layout.displayColumns}">
    <li class="layoutItem" style="cursor:move;">
      ${item.displayName}
      <input type="hidden" name="displayColumn" 
value="${item.displayName}"/>
    </li>
  </c:forEach>                        
</ul>
<script type="text/javascript" language="javascript">
  // <![CDATA[
    Sortable.create("selected", 
{containment:["selected"]});
  // ]]>
</script>
</form>