# update.rjs
page['pane'].drop_out
show_messages

module ApplicationHelper

...

  def show_messages
    update_page do |page|
      if flash[:error]
        page.replace_html :messages, :partial => 'flash/error'
      elsif flash[:notice]
        page.replace_html :messages, :partial => 'flash/notice'
      elsif flash[:message]
        page.replace_html :messages, :partial => 'flash/message'
      end
    end
  end

...

end