There are also pieces of software called Internet spiders, which basically explore a whole site and download all the files with a given extension. If you're into massive RE d/ls you might rather want to look at some of them. as I wrote elsewhere on this forum, when I was younger I used to use spiders for batch-downloading... ehm... pictures scattered in different pages/folders of a given site
You, Sir, are a credit to all MAN kind! I've used similar programs to transverse and record a website for offline use, but I never thought of having one grab files in batches. Close, I was almost there.