<td><%= link_to 'reply', :controller => 'message', :action => 'new', :user_id => @message.from_user_id %></td>
</table>
-<%= start_form_tag :controller => 'message', :action => 'mark', :message_id => @message.id %>
+<% form_tag :controller => 'message', :action => 'mark', :message_id => @message.id do %>
<%= submit_tag 'Mark as read' %>
-
+<% end %>