anchor.diff:            </tr>
             <tr>
               <td class="col1 no-border" style="vertical-align: top"><label for="code">Code:</label></td>
  -            <td><textarea id="code" name="transformation[transformer_attributes][code]" rows="10" cols="25"></textarea></td>
  +            <td><textarea id="code" name="transformation[transformer_attributes][code]" rows="10" cols="25" disabled="disabled"></textarea></td>
             </tr>
           </table>
         </div>
  
positive.code: <script type="text/javascript">
    var fields = <%= @fields.inject({}) { |h, f| h[f.id] = { 'type' => f.final_type, 'db_type' => f.final_db_type }; h }.to_json %>;
    var transformers = <%= @transformers.inject({}) { |h, t| h[t.id] = { 'name' => t.name, 'allowed_types' => t.allowed_types, 'result_type' => t.result_type }; h }.to_json %>;
    $(function() {
      $('#source_field_id').combobox().change(function() {
        var source_field_id = $(this).val();
  
negative.code:         <table class="show">
            <tr>
              <td class="col1 no-border"><label for="name">Name:</label></td>
              <td><input id="name" name="transformation[transformer_attributes][name]" type="text" disabled="disabled" /></td>
            </tr>
            <tr>
              <td class="col1 no-border"><label for="allowed_types">Allowed Field Types:</label></td>
              <td>
                <select id="allowed_types" name="transformation[transformer_attributes][allowed_types][]" multiple="multiple" disabled="disabled">
                <% [%w{integer Integer}, %w{string String}, %w{datetime Date/Time}].each do |(value, label)| %>
                  <option value="<%= value %>"><%= label %></option>
                <% end %>
  