anchor.diff:              }
           }else
            child.remove();
  +
  +        //hide/display -no projects have been subscribed-
  +        if ($('project_subscription_list').getElementsByTagName('li').length > 0)
  +           $('no_project_text').style['display'] = 'none'
  +        else
  +           $('no_project_text').style['display'] = 'block'
       }
   
   </script>
  
positive.code:             <%= sub_form.hidden_field :project_id %>
              <br/>
  
              <p> Would you like to receive emails:
                <% Subscription::FREQUENCIES.each do |freq| %>
                    <%= sub_form.radio_button :frequency, freq %> <%= "#{freq.capitalize}" %>
                <% end %>
                <br/>
                Subscribe: <%= sub_form.check_box :_destroy, {:checked => !sub_form.object.marked_for_destruction?,:onclick=>"updateSubscribedProjectsList(this,#{project_subscription.project_id},'#{project_subscription.project.title}');"}, 0, 1 %>
              </p>
            </fieldset>
          </div>
  
negative.code:   </div>
    <div class="foldContent">
      <span class="none_text"> The following projects are subscribed by you, you may click it to view or edit the subscription: </span>
      <ul id="project_subscription_list">
        <% project_subscriptions = @person.project_subscriptions %>
        <span class="none_text" id="no_project_text" style="display: <%= project_subscriptions.empty? ? 'block' : 'none' %>">No projects have been subscribed</span>
        <% project_subscriptions.each do |ps| %>
            <li id="<%= ps.project_id %>_li">
              <%= link_to_function ps.project.title, "$('select_project_subscription').value = #{ps.project.id};show_project_subscription();$('select_project_subscription').value =0;return false;" %>
            </li>
        <% end %>
      </ul>
      <br/>
       <span class="none_text"> You can subscribe other projects: </span> <br/>
      <%= select_tag :select_project_subscription,
  