WebView and Javascript event listeners

[John Maton]

In a WebView application is there any reliable method to determe when a
Flash video has attempted to run and failed?
I want to be able to detect that condition, inform the user and optionally
run alternative resources when that occurs.
I have tried analysing the data provided by all WebEngine listeners (change
of state, location change, etc, etc), I have tried embedding code in
javascript to listen for other events but no luck so far. Any
comments/ideas would be greatly appreciated.
John Maton