anchor.diff:  
             <tr>
                   <td>
  -                <%= select_tag "available_surveys", options_from_collection_for_select(@target_surveys, :id, :name) , {:multiple => true, :size => 25}  %>
  +                <%= select_tag "available_surveys", options_from_collection_for_select(@target_surveys, :id, :name) , {:multiple => true, :size => 25, :style => "width:400px"}  %>
                   </td>
   
                   <td>
  
positive.code:                 </td>
  
                  <td>
                  <%= select_tag "selected_surveys", options_for_select([["MV-Dist-School-Burs",5926], ["Demo", 6042]]), {:multiple => true, :size => 25, :style => "width:400px"}  %>
                  </td>
            </tr>
  
  
negative.code:      %>
  
      <script type="text/javascript">
  
          $("#moveRight").click(function() {
              moveSelectedSurveys("available_surveys", "selected_surveys");
              return false;
          });
  
  
          $("#moveLeft").click(function() {
              moveSelectedSurveys("selected_surveys", "available_surveys");
              return false;
          });
  
          function moveSelectedSurveys(sourceBoxId, targetBoxId){
              //Refer to this for jQuery help on select lists:
              // http://www.myphpetc.com/2009/03/jquery-select-elements-tips-and-tricks.html
  
              // Get the value of the selected item
              var selectedSurveyIDs = $.map($("#" + sourceBoxId + " option:selected"), function(e){return $(e).val();});
              var selectedSurveyNames = $.map($("#" + sourceBoxId + " option:selected"), function(e){return $(e).text();});
  
              // Add options to the target survey list
              for (var index in selectedSurveyIDs) {
                  $("#" + targetBoxId).append("<option value='" + selectedSurveyIDs[index] + "'>" + selectedSurveyNames[index] + "</option>");
              }
  
              // Remove options to the target survey list
              $("#" + sourceBoxId + " option:selected").remove();
          }
  
      </script>
  
  <% end %>
  