I think that when you import an image larger than the stage it should give you the option
to either shrink it or maintain the original size because this would make scrollers so much easier to make and it would also mean that it would have more resolution so that you have more freedom to resize images.
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I don't think the java player can support that though, however I found a glitch in the java player that let's images become bigger then the screen
http://scratch.mit.edu/projects/deatheater/212169
hope that helps
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