The probably easiest method is using wget, which is available for Linux (should already be included in most distributions) and Windows as well.
Windows Download: http://gnuwin32.sourceforge.net/packages/wget.htm (use the Installer)
The following command line will create a full backup of the site, including all (linked) downloads, and will do it's best to replace scripts with their respective static results. In addition all links to files will be replaced by local links, so that the result should be a completely offline browseable copy of the site.
Code: Select all
wget --no-clobber --convert-links --random-wait -r -p -E -e robots=off -U mozilla http://your.url