Quick question about IMG

Hi.. Not sure if this is in the write section of the forum but here goes..

I look at a lot of ppls HTML (source) trying to figure out how they do different things.. What I have a question about is how are ppl doing IMG links like so:

IMG height=28 alt="" src="websitename_com Royalty-Free Stock Photography_files/topnav_faq2.gif" width=64 border=0>

The section that is bold. Are the webmasters really making folder names that large? or is this a way that you can do by using PHP? Do they do it this way because Search engine spiders can pick up a lot more key words off the site?

Please explain.
Thanks a million

DD

Well, I think the main reason is for the search engine, and it could also be done using PHP so that he doesn't manually type in the directory, but is done by PHP when a user views a specific page. Then again if he wants a lot of hits, he might put them in manually.