# File lib/jpmobile/mobile/docomo.rb, line 99
    def imode_browser_version
      ver = '1.0'
      case @request.env['HTTP_USER_AGENT']
      when %r{^DoCoMo/1.0/}
        # 必ずv1.0
      when %r{^DoCoMo/2.0 }
        @request.env['HTTP_USER_AGENT'] =~ / (\w+)\(c(\d+);/
        model = $1
        cache_size = $2.to_i

        ver = cache_size >= 500 ? (%w(P03B P05B L01B).member?(model) ? '2.0LE' : '2.0') : '1.0'
      else
        # DoCoMo/3.0以降等は、とりあえず非v1.0扱い
        ver = '2.0'
      end

      ver
    end