Since a bit mask is being used, this must be an int32 value. This suggests that there can only be 32 different event types supported by this event propagation model.
This capability is deprecated and is not supported in Netscape 6.0 any more. It never was supported by MSIE, which implements a completely different event model. As it turns out, the DOM level 2 event model converges on the MSIE technique.
|See also:||Document.captureEvents(), Document.releaseEvents(), Element.onevent, Event handler, Event management, Event propagation, Event type constants, Frame object, handleEvent(), Keyboard events, Layer.captureEvents(), Layer.releaseEvents(), onLoseCapture, onMouseMove, Window object, Window.captureEvents(), Window.releaseEvents(), Window.routeEvent()|