Topic: ExternalInterface and addCallback implementation

When autoviewer pro first loads the key commands do not work. You need to click on the embedded flash movie first for them to work. I understand that through the actionscript functions ExternalInterface and addCallback you can control the flash movie through javascript if you successfully register the appropriate functions from the viewer.swf movie (private function onKeyDown() )

Has anyone out there done this to save me the headache of figuring it out?