Orca giving issues if Firefox

Please take a look at http://moviecoupons.com/community/orca/ using Firefox and you will see that it is not working, however, in Safari it seems to be working fine.

Can anyone help me with this?

I nread in here that XSLT may not be supported, how can I tell if it is?

Thanks,

Yes it looks that your php is not compiled with dom-XSLT, and you have not compiled the orca language file.
To find out if your server has xslt enabled, use yourdomain.com/admin/phpinfo.php and look if there is showing XSLT enabled. If not ask your hosting to do that for you.