Bank simulator

This applet uses dialog windows. Due to some bugs in the Netscape Navigator 3.0 Gold for Unix, Netscape issues a "Null pointer exception" when opening a dialog. However, the applet runs perfectly under any other version of Netscape (which supports Java), under Netscape 3.0 Gold on other platforms (like Windows95 or MacOS) and, of course, under appletviewer.

Here is the source code: