Hi,
a long time we didn't discuss.

I got a problem with your simulation when launched in this page
http://gwenaelm.free.fr/2008-9/articles.php?lng=fr&pg=1207
with Firefox and Chrome but not with IE 7.

Whereas when I ask for it in this page
http://gwenaelm.free.fr/Physique/Physchim/c03/Mecanique/Html/Gravitation/manipulation__deuxime.html
or in this one
http://rivenzic.free.fr/Joomla/index.php?option=com_content&view=article&id=358:test&catid=47:archives&Itemid=148
there is no problem ...

When I ask for java console to tell me what's wrong, it close without letting me copy the log so I made a screen capture you can find here
http://gwenaelm.free.fr//Divers/Images/guppy6.jpg

And for the page where it work, I got a lot of error messages you can read here
http://gwenaelm.free.fr//Divers/Images/guppy.txt

FF, Chrome and java have all been updated, I have suppressed the historic and cache ...

And now I don't know what to do.

Do you have any idea ?

Thanks in advance,
best regards,