All JavaFX sample applets start even on currently unsupported platforms which may cause a lot of trouble (e.g: http://javafx-jira.kenai.com/browse/RT-2544). Since applets are embedded in webpages and webpages should never cause browsers to crash.

proposed fix:
-use deployment toolkit to detect platform + jre
-display a fancy branded banner which tells the user that this particular applet is not supported on his platform
-don't crash if possible ;)

possible difficulties:
deployment toolkit only fully implemented on windows but the currently available crossplatform features should be sufficient for this task