HTML START = FILEOPEN

FILEOPEN, which is the default value, makes the movie start when the file is opened.

For example, this code 

<IMG 
 SRC="/graphics/moonflag.gif" 
 DYNSRC="/graphics/moonflag.mpg" 
START=FILEOPEN 
 ALT="Astronauts on the moon">

starts the movie as soon as the page is opened:

Astronauts on the moon

START=MOUSEOVER >