Rails - Aug 2007 - Production version skips validation

I''m trying to validate_presence_of a hidden_field, which works fine on
my machine, but when I upload it to the production server (Apache
front-end running WEBrick behind) it skips validation every time.  The
form field values are assigned with a javascript function, and then it
is submitted using javascript instead of a submit tag.

Controller:
  def result
  case @request.method
      when :post
        @result = Result.new(@params[''result''])
        if @result.save
          flash[''notice'']  = "Evaluation Submitted"
          redirect_back_or_default :action => "nextpt"
        end
      when :get
        @result = Result.new
    end
  end

View:

                            <%= start_form_tag :action=>
"result" %>
                            <%= hidden_field "result",
"DefinitionUseful" %>
							<%= hidden_field ''result'',
''DefinitionComments'' %>
                            <%= hidden_field "result",
"SOPPUseful"
%>
							<%= hidden_field ''result'',
''SOPPComments'' %>
  							<%= hidden_field "result", "RIDeMResultUseful"
%>
							<%= hidden_field ''result'',
''RIDeMResultComments'' %>
							<%= hidden_field ''result'',
''EvaluatorUserID'', :value=>
session[''user''].UserID %>
                            <%= hidden_field ''result'',
''StudyPatientNumber'', :value=>@patient.PatientNumber %>
					  		<%= end_form_tag %>


          <tr><td colspan="3"
align="center"><input type="button"
value="Submit and Continue" onclick="submitForm();"
/></td></tr>

Model:
class Result < ActiveRecord::Base
	set_table_name "CCStudyResults"

  validates_length_of :DefinitionUseful, :minimum => 5, :message =>
"seems to short"
end

I''m still pretty new at this.  Any ideas?  Thanks!!!


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