The Java Virtual Machines on the Mac OS always seem to
have had trouble with the Java 1.1 event model, in particular
the mouse events. All of our products use the Java 1.1 event
model. In order to overcome this there is a plug-in that
can be applied MRJ-MacOS Runtime for Java plugin. The details
of which can found at,
http://www.mozilla.org/oji/MRJPlugin.html