Multi-page Static Website to PDF/CHM/Other Converter

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http://askubuntu.com – I have several small static websites that I want to turn into PDFs, CHMs, or a similar format. These websites are documentation generated by Ruby's RDoc tool. They have an index.html file and links to other static files all contained in directories up to two-levels deep. I want to be able to view these docs on my iOS and Android devices. Neither of those devices will let me easily browse a static website so I think a better solution would be to turn these sites into a more supported format on my Ubuntu desktop and then transfer them to something portable. (HowTos)