You can see a perfect example at this link http://www.lovemyflash.com/layouts/142.html and scroll down to the preview you'll see a symbol that looks like its a pulsing red glow around it.

Does anyone know what this is called? I would love to find a tutorial on how to do it. I tried taking an image, throwing a glow on it from ps, and then trying to tween the images together but that didn't work like I thought it would. Or at all really :/

Does anyone have an idea of how this works? Thanks so much