I don't personally use FlashPaper, but it's becoming more popular. It might be a good option to have in the future?

FlashPaper looks interesting, although I think we would need to see more demand for it before considering adding it as a new backend to Prince.

(It seems that a PDF produced by Prince could always be converted to a FlashPaper file using Macromedia's print driver, so there is already an option for people who want to go from XML/CSS -> FlashPaper).

This isn't precisely what you're looking for, but it'll work (I've been
doing similar for years now).

Build a navigation template in flash (pg number, forward/back,
header/footer etc.)

Pipe your prince output through pdf2swf and swfcombine (both
www.quiss.org/swftools/ and GPL) and there ya go.

disclaimer: I use swfcombine extensively with SWF: for Ming. I'd
expect pdf2swf to be on par with swfcombine.

wade

"One can't complain. I have my friends. Someone spoke to me only yesterday."--Eeyore