START
This attribute is used to define the action that will trigger the file. For example, a movie file with the START="FILEOPEN" attribute will begin playing immediately after the movie file is finished downloading. A value of START="MOUSEOVER" will play the movie only when the mouse pointer is positioned over the image.
syntax:
START="FILEOPEN" or "MOUSEOVER"
The HTML element(s) this attribute is used with are:
IMG
OBJECT