The idea is to use javascript to style DOM elements using images rendered according to the certain style rules also specified in the HTML. This normally involves pointing the background image to the rendering script on the server using RMagick. The images are all cached, so they’ll only be rendered once. The advantage of this technique is that it is unobtrusive, so rendered text will still be readable by search bots and your page will still work if javascript is not available.

There are several styles currently possible:

• Gradients/Textures,
• True Type Fonts
• Curved Corners
• Dropshadows
• Rotations

The styles are specified using CSS-style code e.g this converts the body to a pink/striped gradient: