Netscape Navigator, both versions 2.0 and 2.01, has problems with the choice button that is used to select the various canned inputs. If the current input choice is not "Custom", and you click on the ``Shuffle now'' button or manually change the values in the text field and hit enter, the choice button disappears! It's not supposed to. Instead, the choice button is supposed to just change to "Custom".
I don't think this is my fault. The Java Development Kit applet viewer does not behave this way.
To find the choice button again, hide the Netscape window and expose it
again. This is easy to do if you have a desktop pager under
fvwm by clicking on a different
desktop page and then returning.
Another way to find it again is to just click where the button should be. The choice menu will appear. Letting go of the button will make the button reappear where it's supposed to.
As always, your mileage may vary.