> Why don't you give TeleportPro or WebCopier a try?> Both handle Java Script
and do a good job.

I doubt any of them will handle javacript expressions (such 
as "foo.asp"+variablename).

Javascript parsing is extremly difficult to do ; even more 
complex than what browsers do: you don't only have to 
interpret the javascipt code, you have to analyse it and 
modify it to fit the local filesystem structure.

I doubt that computers nowadays are clever enough to do 
that.
Maybe in the 22th century :)