how to test for presence of a file with XSLT?

I use a file separate from the source XML file to control the naming of xml
elements on output. This is mostly for multi-lingual implementation.
However, I have some users that want different labels from everybody else
(ggrhhh!). What I want to do is change the XSL so that it tries to load a
file-specific labels file, and if it doesn't find it, loads the default
labels file.

I thought I could be tricky by attempting a load with the document()
function and then testing for emptiness, but the parser didn't like that
approach at all. We use XALAN-J as our parser. Do I need an extension
function to do this?


thanks,
Yves Jaques 
Information Officer     FIDI 
FIDI - room F-320 
United Nations Food and Agriculture Organisation 
viale delle Terme di Caracalla - 00100 Roma - ITALIA 
_________________________________________ 
yves.jaques@xxxxxxx 
tel. : (39) 0657056058        fax.: (39) 0657052476    
Please visit our web site at: 
HTTP://WWW.FAO.ORG/FI 

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