anchor.diff:    <% end %>
   
     <% form_for([@event, @proposal]) do |f| %>
  +    <%= f.hidden_field :track_id if event_tracks? && @event.tracks.size == 1 %>
  +    <%= f.hidden_field :session_type_id if event_session_types? && @event.session_types.size == 1 %>
   
     <% if user_profiles? and multiple_presenters? %>
       <div id="manage-speakers">
  
positive.code:               </td>
              </tr>
            <% end %>
            <% if event_session_types? %>
              <tr>
                <td class="label-cell">
                  <%= required_field %><%= f.label :session_type_id, "Session Type" %>
  
negative.code:           <td class="label-cell"><%= required_field %><%= f.label :title, "Title" %></td>
            <td><%= f.text_field :title %></td>
          </tr>
            <% if event_tracks? and @event.tracks.size > 1 %>
              <tr>
                <td class="label-cell">
                  <%= required_field %><%= f.label :track_id, "Track" %>
  