Rails - Apr 2006 - Does observe_field work with date_select?

I can''t get observe_field to do anything with my date_select.
Here''s the
rhtml code:

<%= date_select ''course'',
''lab_start_date''  %>

<%= observe_field(:course_lab_start_date, :frequency => 0.5,
                  :update => :course_lab_start_date_div, :url => { 
:action => ''preview_text''}) %>

My ''preview_text'' action is never called. Looking at the html
generated,
date_select generates three seperate select fields, and none of them 
have id''s. observe_field of course watches for the id...

Any ideas? Any ideas that don''t involve having three seperate selects, 
each with their own observe_field? I really want to treat this as a 
single date object.

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