Scroll around image without redownloading?

Is there any way to pull an image into a browser and show only a
subset of it?

If so, can one change which subset one is showing?

Does one have to write a Java applet to do this? Or can it be done with
Javascript?

Randall wrote:

Is there any way to pull an image into a browser and show only a
subset of it?

If so, can one change which subset one is showing?

Does one have to write a Java applet to do this? Or can it be done with
Javascript?

It can be done server side with any language that has an interface to

both CGI and Image Magick.