Rails - Oct 2005 - observe_field not updating div

I''m having trouble getting observe_field to work properly. Specifically
the
method on the server gets called, but the specified div does not update.

Here is my rhtml:

<form action="/chapter/new_milestone">

 <tr>
 	<td>
 		<select id="milestone_type_id"
name="milestone_type_id">
 			<option></option>
 		<% @remaining_milestones.each do |milestone_type| %>
 			<option value="<%=milestone_type.id%>"><%
=milestone_type.name%></option>
		<% end %>
 		</select>
 		<%= observe_field(''milestone_type_id'',
 				:update=>"milestonedata",
 				:url => { :action => :update_milestone_data },
 				:with => "''milestone_type_id='' + escape
(value)") %>
 


 	</td>
 </tr>
 <div id="milestonedata"></div>
 </form>

and when I change the select I can see the method in the server log getting 
called :


Processing ChapterController#update_milestone_data (for 127.0.0.1 at Sun Oct 
09 02:31:50 Eastern Daylight Time 2005)
  Parameters: 
{"action"=>"update_milestone_data",
"milestone_type_id"=>"5",
"controller"=>"ch
apter"}
Actually called the AJAX BASTARD!!!5
Completed in 0.00010 (10000 reqs/sec) | Rendering: 0.00000 (0%) | DB: 0.00000 
(0%) [http://127.0.0.1/chapter/update_milestone_data]

But when I look in the params, I don''t see an update param being
passed.  Is
that the problem?  Has anyone else encountered this kind of problem before?

TIA
-Alex

btw - in my first ror post let me also say ror rules!

Alex Reuter <reuter@...> writes:
> 
> I''m having trouble getting observe_field to work properly.
Specifically the
> method on the server gets called, but the specified div does not update.
> 
> Here is my rhtml:
> 
> <form action="/chapter/new_milestone">
> 
>  <tr>
>  	<td>
>  		<select id="milestone_type_id"
name="milestone_type_id">
>  			<option></option>
>  		<%  <at> remaining_milestones.each do |milestone_type| %>
>  			<option value="<%=milestone_type.id%>"><%
> =milestone_type.name%></option>
> 		<% end %>
>  		</select>
>  		<%= observe_field(''milestone_type_id'',
>  				:update=>"milestonedata",
>  				:url => { :action => :update_milestone_data },
>  				:with => "''milestone_type_id='' + escape
> (value)") %>
> 
>  	</td>
>  </tr>
>  <div id="milestonedata"></div>
>  </form>
Ok - solved my own problem here, and not surprisingly the issue was the html 
itself.  My html education stopped at table/tr/td and it seems that I was 
doing something wrong.  I''m guessing the tables and divs don''t
play the way I
thought they did.  To ''fix'' it I removed all extraneous code
and this:
 <div id="milestonedata"></div>
 <form action="/chapter/new_milestone">
		<select id="milestone_type_id"
name="milestone_type_id">
 			<option></option>
 		<% @remaining_milestones.each do |milestone_type| %>
 			<option value="<%=milestone_type.id%>"><%
=milestone_type.name%></option>
		<% end %>
 		</select>
 		<%= observe_field(''milestone_type_id'',
 				:update=>''milestonedata'',
 				:url => { :action => :update_milestone_data },
 				:with => "''milestone_type_id='' + escape
(value)") %>
 


 </form>

works just fine.  

If anyone wants to point out what was wrong with my original html, by all 
means do so.  Either way I think I am in for some html re-education.