Trigger when user chances slides (like "OnLoad" event)

Hello,

I want to react to the user viewing a new slide, either using prev/next buttons or the outline menu, when jumping to a slide, etc. - is there any way to hook into this? Something like a "OnLoad" event for slides?

For example, I would like to play a sound for each slide - or show a custom javascript popup.

(Just embedding a flash file into each slide is not an option, as I occasionally need my "one" flash file per slide for another swf - and still want to react on slide load).

I would really appreciate help on this issue.

Thank you very much!

Karl