When someone clicks an image, I need it to send me a pm

[ab420]

I am trying to set up a "scavenger hunt" on my forums. Basically I will hide images throughout the forums (and other hacks I have that run through the forums system) and people have to find them, whoever finds the most wins... I figure this is a great way to get people to explore all the parts of the forum, and get them to stay on the site longer.

I would like to be able to put the images on the site in such a way that:
When someone finds one, they can click on it, and it will:
a) send me a PM that tells me who found it, and which one it was
b) make the image disappear, so no one can else can find it and click on it.

Is this possible at all?

Thanks in advance.

P.S. - Feel free to use my scavenger hunt idea