Changing applet parameters with Javascript

Is it possible to have an applet read a param value which has been changed with Javascript after the applet loads?
I've tried changing the param value in this way, but the applet doesn't read the new value. It reads the default value in the HTML when the applet loads, and getParameter is in the main loop of the applet which runs and updates other (internal) values fine...

Well that page says that param values can't be changed at run-time. Never mind though because I read some more and found out how to implement a method in the applet (which can be called from Javascript) that reads the host page's DOM, thereby achieving the same result.
Thanks for the pointer.

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