how to add sound to menu? if possible
By "add sound," I assume that you want a sound to play when you mouse over a menu item (rather than playing a tune as the result of selecting a menu item???). If that's what you want, then the Activating Functions example should get you started; that's exactly what it does, to demonstrate the use of the onfunction and offfunction properties.
Hope that helps,
Kevin
Hope that helps,
Kevin

