def parse_line (line,strip=false)
  #s1='\003\002\037\026\017\n'
	#s2='cbuion'
  if strip
    line.gsub!(/(?:\003\d{0,2}(?:,\d{0,2}){0,1})|[\002\037\026\017\n]/,'')
  else
    line = CGI::escapeHTML line
    spanned = false
    tmp = ''
    s = Set.new
    so = Set.new
    fg = bg = ''
    clst = false
    line.chars do |ch|
      case ch
      when "\002"
        s = s ^ ['b']
      when "\037"
        s = s ^ ['u']
      when "\026"
        s = s ^ ['i']
      when "\017"
        s.clear
      when "\003"
        fg='fg'
        bg=''
        clst = true
      when '0'..'9'
        if clst
          unless bg.eql? ''
            case bg.size
            when 4
              clst = false
              s = s + ['bg']
              redo
            when 2..3
              bg = bg + ch
            end
          else
            case fg.size
            when 4
              clst = false
              bg = ''
              s = s + ['fg']
              s = s - ['bg']
              redo
            when 2..3
              fg = fg + ch
            end
          end
        else
          tmp = tmp + ch
        end
      when ','
        if clst && bg.eql? ''
          bg = 'bg'
        else
          if s != so
            if spanned
              tmp = tmp + '</span>'
            else
              spanned = true
            end
            tmp = tmp + "<span class='#{s.to_a.join ' '}'>"
          end
          tmp = tmp + ch
        end
      else
        if s != so
          if spanned
            tmp = tmp + '</span>'
          else
            spanned = true
          end
          tmp = tmp + "<span class='#{s.to_a.join ' '}'>"
        end
        tmp = tmp + ch
      end
    end
    tmp = tmp + '</span>' if spanned
  end
end