> When copying a site, several images do not get
> copied correctly. The url of the image looks like
> this:
> <http://home.visio.org/index.php?file_id=04cd6b3a4a10>
> 0219aef16baf900d804e

This is a bug on the server side: the server returns "HTML content" mime-type,
instead of "image/gif"

Firefox also display the "image" as an HTML page (GIF89a..)

There is currently no workaround possible on the client side (IE can display
the image, because it has some dynamic content detection workarounds).