Need help creating a picture that when selected will show diff pic.

[fred]

Hi!
Recently my friend sent me an e-mail that contains a picture that when it's selected it'll show a totally different picture. I'm wondering how can it be done with photoshop and can someone teach me how to do it? Thanks!

[morse]

There's a tutorial on deviantart somewhere www.deviantart.com

[simplistik]

Only works in IE, and if you put it into PS and zoom out it shows the original too.

http://www.toccionline.com/creations/ctrla/how.html

[Jeff Wheeler]

wow, that's really cool, I've never seen anything like that before

[morse]

There was a thread on this a while back.