wget for windows (or http://gnuwin32.sourceforge.net/packages/wget.htm)
Once installed it’s as simple as: –
wget -m -np http://eamos.pf.jcu.cz/amos/kat_inf/externi/
The -m is an alias for --mirror. As a commenter noted, you probably want -np or --no-parent so that you don’t go up in the directory structure. You might also want to add --wait=5 so you don’t thrash the web server, --convert-links if you want local links in the html file when it’s done, and --execute="robots = off" if you’re not getting all of the files (ignores robots.txt file). Altogether now:
wget --execute="robots = off" --mirror --convert-links --no-parent --wait=5 http://eamos.pf.jcu.cz/amos/kat_inf/externi/