I was messing around with masks and images when creating a footer to see what things could be done with it. Eventually this turned up. It’s like a transparent jellyfish bouncing up and down the image. You know that typical movement jellyfish make ? Well, this effect is similar to that movement. Click the image to generate the effect.
** Warning: CPU-intensive for slow computers !**
[swf=http://www.voetsjoeba.com/lab/view/jelly.swf]width=256 height=192[/swf]
