I am having problems displaying a full size image in a pop up window on my
mirrored site.

On the original site, there is a preview image with a zoom button under it.
The preview image source points to a file in a directory ending with no image
extension i.e "/P5R1H_N/87717969". On my backup, this source points to a file
named "/P5R1H_N/87717969.gif"
 
On my both my mirror and the original site, the zoom button will open a new
window. When the zoom button is clicked, a popup box is opened using
"onclick="javascript:zoomImage('P2R1H~N/87717969')" followed by some
dimensions of the image.

On my mirror, there is no image that loads for the pop up. Unlike the preview,
the image source for the pop up points to a file in a directory that doesnt
exist. The file also ends with no image extension i.e "87717969" instead of
"87717969.gif" like the preview image.

Any insight to this would be greatly appreciated. I was able to work through
my other problems with this mirror by searching the forums, but am held up on
this one.