Animated Scaling for galleries

Hello everyone, I am a new member with Kirupa. (I love the amount of information this site offers!)

I am just wondering if anyone has suggestions or tutorials on creating a scaling photo gallery?

I would like for my photos to automatically scale to size through a nice animated transition when the user clicks a button. I’ve seen a lot of sites do this, but I can’t seem to figure it out. I’d appreciate the help. Thanks…