[l2h] l2h doubles xypic image sizes?

[akrowne]

Check out 

http://planetmath.org:88/test/debrujin/

It is a test run of latex2html on a math entry that includes an xypic graph.  
It shows how latex2html always produces images that are about twice too high,
with the top half blank.  I poked around a bit and couldn't figure out why this
should be happening, so before I make an ugly post-processing hack to crop the
offending images, I thought maybe you might have some ideas...

Thanks,

Aaron Krowne