# File lib/jpmobile/emoticon.rb, line 37
    def self.external_to_unicodecr_au(str)
      str.gsub(AU_SJIS_REGEXP) do |match|
        sjis = match.unpack('n').first
        unicode = AU_SJIS_TO_UNICODE[sjis]
        unicode ? ("&#x%04x;"%unicode) : match
      end
    end