# File wfo/repo/tdiary.rb, line 26
  def self.find_stable_uri(page)
    if /<span class="adminmenu"><a href="(update.rb\?edit=true;year=\d+;month=\d+;day=\d+)">/ =~ page
      page.base_uri + $1 # it assumes base element not exist.
    elsif /<span class="adminmenu"><a href="update.rb">/ =~ page
      now = Time.now
      page.base_uri + "update.rb?edit=true;year=#{now.year};month=#{now.month};day=#{now.day}"
    else
      raise "update link not found in tDiary page : #{page.last_request_uri}"
    end
  end