saxon and fop versions

When running FOP, the version number is given as :

Mosaics$ ./test.pl all
[INFO] Using com.icl.saxon.aelfred.SAXDriver as SAX2 Parser
[INFO] FOP 0.20.5


However, when I can't seem to find the version of SAXON?  I'm not a 
java expert, so could someone please inform me how to find the running 
version of Saxon?

Cheers,

Tristan
------------------------------
Tristan J. Fiedler
Postdoctoral Fellow - Stein Lab
Cold Spring Harbor Laboratory