[Boost-users] [asio] broken link?

I checked out boost HEAD recently and tried to use asio library. In folder PATH/boost/libs/asio, I did a "firefox index.html". It cannot find PATH/boost/libs/asio/doc/html/index.html. There's even no html folder in asio/doc. Is it just me? p.s., I certainly can find online documents at asio.sf.net, but it's not as convenient as having local files.