thanks for the input, yes, it sounds reasonable. I am indeed needing to know all outside references, so CSS and Javascript is important to me. I am looking into CSS::SAS at the moment, and will report if I find any breakthroughs (Lord willing)
Comment on Re: More robust link finding than HTML::LinkExtor/HTML::Parser?
I think the only way is to load it in a browser and let it work itself through normally. Various add-ins offer to show all the media on a page; you could write an add-in that accessed that list and returned it programmatically rather than displaying it in a GUI.