Help with HSTouch onload event trigger

Hi

I have a HSTouch screensaver screen.
It is a clock which bounces around the screen with a picture.

Is it possible that when my HSTouch reverts to this screen after two minutes of no activity;

is it possible when the screen loads to trigger a HS3 event named "Screensaver Now On"

without pressing anything similar to a html body onload ???

Cheers