Not really. The GSA links to individual documents. For what you want,
you'd need links within documents. It's possible to provide links
within HTML and PDF documents, but unless you have those you're not
going to be able to do it just with the GSA.
If you do have links within documents, you could presumably fiddle
around with the XSLT to serve those links, but the GSA isn't going to
catalog them or know what they are in advance.
Dave Watts, CTO, Fig Leaf Software
1-202-527-9569
http://www.figleaf.com/
http://training.figleaf.com/
Fig Leaf Software is a Service-Disabled Veteran-Owned Small Business
(SDVOSB) on GSA Schedule, and provides the highest caliber vendor-
authorized instruction at our training centers, online, or onsite.