>> Is there a way to display a 2 dimensional x,y plot (where x=3Dtime and=
>> y=3Denergy) while a movie is simultaneously running?
Not sure exactly what you mean by 'movie'
I assume that you mean a series of frames that get played, one after the
other. As in a multi-frame .xyz file or .pdb file ...
You can play these files using the 'animation' series of commands.
In the context of a web page, there is a somewhat crude mechanism that
allows you to register a 'callback' that will get called each time the
frame changes. You get called with the frame number.
This mechanism would allow you to keep a separate plot in synch.
Q: Is this the kind of thing you are looking for?