class Kramdown::Converter::Html

def convert_ul(el, indent, opts)
  if !@toc_code && (el.options[:ial][:refs].include?('toc') rescue nil) && (el.type == :ul || el.type == :ol)
    @toc_code = [el.type, el.options[:attr], (0..128).to_a.map{|a| rand(36).to_s(36)}.join]
    @toc_code.last
  else
    "#{' '*indent}<#{el.type}#{html_attributes(el)}>\n#{inner(el, indent, opts)}#{' '*indent}</#{el.type}>\n"
  end
end