Maybe. I dunno.
It'd just be two simple pictures, let's say they're at Blockland/base/imga.extension and Blockland/base/imgb.extension.
The server, depending on if it's open or not, would perform a "fileCopy()" action and would move the two.
Blockland/base/imga.etsn would be copied into Blockland/base/img.extsn.
You would do the following in the op: [img]69.64.43.11/base/img.extsn[/img]
The server would swap the images, thereby swapping the ones in that position whenever it's up or not.