Topic: Open images in layer above current browser window

I'm sure everyone has seen that 'fancy' effect whereby an image is opened in a new 'window' above the current browser window with a darkish surround, and when the image area is clicked on, the 'window' closes and you're back in the original website again.

I'm curious if anyone has done something similar with simpleviewer? I'm keen to get this setup in my version of svpro, however I'm no code monkey (the best I can do is follow the instructions).