JQuery Useless (?) Control ...

In terms of entertainment from nothing to do, I wrote a piece that emulates the behavior of a “mask” in graphic editors - the “eye” moves behind the mouse cursor, showing a part of the image. If suddenly someone needs it - use it for health, but it is not clear where it can come in handy ...


I can not give an example, but you can download slil.ru/26281396 (50Kb)

ps The only real application that was thought of - the Easter egg on the site, in fact, this behavior is shown - find a piece with a hand and click.
pps The implementation of "stupid", just for fun, can be more elegant, but is it necessary ...