Style Sheet for Content MathML

Hi Colleagues,
 
I am working on a large web project in probability
(http://www.math.uah.edu/stat) that uses Content MathML.  Can you tell
me if there have been any updates to the stylesheet ctop.xsl since
version 1.3 (dated v 1.3 2002/09/20 08:41:39)?  Also, is there any
documentation that explains how the stylesheet works?  There seem to be
some problems with missing parentheses when operations are nested, as
well as some other minor problems. (I am using Mozilla Firefox).
 
Thanks very much for your work on MathML.
 
Best regards,
 
Kyle Siegrist
Department of Mathematical Sciences
University of Alabama in Huntsville
Huntsville, AL 35899
siegrist@math.uah.edu 
http://www.math.uah.edu <http://www.math.uah.edu/>