Rails - Mar 2006 - auto_complete_on_select don''t work correctly

Hi, i hope that''s the correct place for this question.
I must update two input text from autocomplete. The list is, for 
exemple:

<ul>
<li>
  <span class="comune_name">pippo</span>
  <span class="lat"
style="display:none">1.2</span>
  <span class="long"
style="display:none">3.0</span>
</li>
</ul>

I want  in <input id="inputlat" type="text"
value="-" /> the value 1.2
and in <input id="inputlong" type="text"
value="-" /> the value 3.0

I have used auto_complete_on_select but not work.Any suggestion?

The code is:

function auto_complete_on_select(element, selectedElement)
{
    document.getElementById(''inputlat'').value = 
selectedElement.childNodes.item.getElementsByTagName(''span'')[0].innerHTML;
	document.getElementById(''inputlong'').value = 
selectedElement.childNodes.item.getElementsByTagName(''span'')[1].innerHTML;
}



        <input name="comune" class="autocomplete"
id="autocomplete"
size="20" type="text" onkeyup="new
Ajax.Autocompleter(''autocomplete'',
''autocomplete_choices'', ''list.php'',
                        {minChars: 2,afterUpdateElement: 
auto_complete_on_select} );"/>

        <br/> lati: <input id="inputlat"
type="text" value="-" />
        <br/> long:  <input id="inputlong"
type="text" value="-" />


Thanks in advance
max

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