parse.rb

#!/Volumes/data/home/yannick/.rvm/rubies/ruby-1.9.2-preview3/bin/ruby  
require 'open-uri'
require 'nokogiri'


save_dir = "./html/" 

url = 'http://www.admin.ch/ch/d/sr/101/index.html'
toplink = url.gsub(/index.html$/,'') 

doc = Nokogiri::HTML(open(url))

toc = doc.css('#spalteContentPlus')


layer1_links = toc.css('a').collect{|lnk|  lnk["href"]}.select{|lnk|  lnk.to_s.start_with? "./"}

layer1_links.each do |lnk|   
    lnk.gsub!(/^.\//,'')
    subsite = toplink + lnk  
    puts "fetching #{subsite}"
    sdoc =  Nokogiri::HTML(open(subsite))   
    text = sdoc.css('#spalteContentPlus') 
    filename = save_dir + lnk
    puts "writing to #{filename}"
    File.open(  filename, 'w'){ |file|
       file.write text.to_html 
    }
 

end