I have encountered no difficulty with the applets on these pages with any browsers other than Internet Explorer (IE). If you are having problems running the applets on these pages with IE, I can only offer you the solution that worked for me.
1. Be sure you have the Java 2 RTE plug-in, available from sun.
2. In your Control Panel, open the Java Plug-in Control Panel. Go to the Browser folder and check to make sure that the Java plug-in selected as the default Java Runtime in IE.
If that doesn’t work, then your problem is beyond my limited knowledge base and all I can do is wish you good luck!