Randomly load JPEG with fade

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A call to all for help… Is there a way to use ActionScript to randomly load JPEG files so that one fade’s out smoothly while the other fade’s in… without a button or mouse trigger, like in a banner? I posted this question the other day but so far have received 0 replys. Not sure if I’m asking something extreemly difficult or so darn simple everyone figures it should be obvious! I tried using setInterval with a function call and it works sort of but caused other problems in the movie…Please, if you have any suggestions I would be very greatful.