What did you do in Flash to make your window?
Anyways, you're right, not such a hot idea. It will look horrible on anyone's screen that isn't big enough for the window/image, and they won't be able to scroll the rest of the image into view. And, there are the pop up blockers, and the new windows to existing window, and new window to tab settings many folks have so really, the appearance for any given user is out of your hands.
Lightbox:
http://www.dynamicdrive.com/dynamici...box2/index.htm
Is a very nice alternative to opening a window.
Back to your question, if you use the javascript window open method in Flash, something like (I'm not much up on Flash):
Code:
URL="javascript:window.open('some.jpg','','width=300, height=250')"
It will use the minimum stuff allowed, like no address bar, scroll bar, etc. But, all modern browsers now have some minimum requirements for new windows.
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