# File formvalidator.rb, line 938
    def match_ip_address(val)
      regexp = /^(\d+)\.(\d+)\.(\d+)\.(\d+)$/
      match = regexp.match(val)
      error = false
      if match
        1.upto(4) do |i|
          error = true unless (match[i].to_i >= 0 && match[i].to_i <= 255)
        end
      else
        error = true
      end
      error ? nil : match[0]
    end