It looks to me (without mulling over the entire set of docs) that they own the patent for a 'browser' which renders pages in such a manner. I would suggest that they sue whomever built the browser (their wording) which allows such an arrangement of pages to display. It would be simple in court to show this NOT happening by using a browser that does not support frames. ;)

I hope this gets taken to court... this isn't that same guy who sued over retail web sites (claiming patent on electronic ordering)?

Anyway, like Val said, there's mounds of prior art out there.

M