Rails - Jun 2006 - return from controller not evaluating script

I am using this in my controller to reload the country_area partial in 
my form

def add_country_area
    render :update do |page|
      page[:country_area].reload
    end
end

<< in form >>
        <span id="country_area">
	   <%= render :partial => ''country_area'' %>
  	</span>&nbsp;

<< partial _country_area.rhtml >>
<%= select :country_area, :id, @country_areas.collect {|c| [c.descr, 
c.id]}, {:prompt => "-- Select Area --"},
  {:name => "country_area_select", :onChange => "new 
Ajax.Updater(''country_area_info'',
  
''/controller/admin/change_country_area/''+country_area.selectedIndex,
  	{asynchronous:true, evalScripts:true});" }
%>

--------

Here is the HTTP response I get back using FireBug:

$("country_area").replace(
"<select id=\"country_area_id\"
name=\"country_area_select\"
onChange=\"new Ajax.Updater(''country_area_info'', \n 
\t''/controller/admin/change_country_area/''+country_area.selectedIndex,\n
\t{asynchronous:true, evalScripts:true});\"><option 
value=\"2\">Guayanquil</option>\n<option
value=\"7\">New</option>\n
<option value=\"8\"
selected=\"selected\">New</option>\n<option
value=\"1\">Quito</option></select>");

---------

So when the page is redisplayed, it doesn''t evaluate the response, but 
instead I get:

$("country_area").replace(| .. drop down list ..|");

Why isn''t the content in my country_area span getting replaced 
correctly? Also, I do have the necessary javascript files in my layout, 
I know that can be a problem when it does not get evaluated.

Thanks for the help!
Brian

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