That really comes down to the end-usere's file associations. Most ppl running IE or a recent edition of Netscape would end up seeing the image within IE so it wouldn't be a problem but there's not really any way of enforcing it it. Why not just load the images into Flash on the fly? (That assumes you're using MX and the images are JPGs ... which they'd kinda have to be to load in IE and NS)
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