Rails Tabbed Navigation Helper

Kent's Rails Way Tab Helper.rb

def layout_link_to(link_text, path, opts = {})
  curl = url_for(:controller => request.path_parameters['controller'],
                        :action => request.path_parameters['action'])
  html = ''
  options = curl.include?(path) ? {:class => 'current'} : {}
  if opts[:class] && options[:class]
    options[:class] = "current #{opts[:class]}"
  else
    options.merge!(opts)
  end
  html << content_tag("li", link_to(link_text, path, options))
end