Nothing like being late out of the blocks.
With a view to carrying the whole of the Arduino site on a netbook to my workshop which is out of wireless range, I used Teleport Pro...http://www.tenmax.com/teleport/pro/home.htm
to download and link the whole site and playground.
The result is the same as being on the internet live.
Adjustment to the project wizard... set the start address and leave the depth of search at 3 but when the wizard is finished go to the Starting Address Properties and select the second item instead of the first...
'but only urls on www.arduino.cc
' unless you want to gather the whole internet.
The end result is a folder with the site. Open it and dbl click index.htm then browse off line the whole site.
A bit late but might help someone. There may also be other similar programs that are free.