GlassBox – Better UI 

GlassBox is a compact Javascript User Interface (UI) library, which use Prototype and Script.aculo.us for some effects. With GlassBox you can build transparent border, colorful layouts and “Flash-like” effects. The GlassBox library .. * is easy to use * is customizable and skinnable * comes with a coherent API (CSS based parameter) and a short [...]

Spice up your images with this script! 

instant.js 2.0 allows you to add an instant picture effect (including tilt) to images on your webpages (alternatively: slided.js or filmed.js). It works in all the major browsers – Mozilla Firefox 1.5+, Opera 9+, Safari and IE6+. On older browsers, it’ll degrade and your visitors won’t notice a thing.

Live Pipe – Extensions for Prototype 

LivePipe UI is a suite of high quality widgets and controls for web 2.0 applications built using the Prototype JavaScript Framework. Each control is well tested, highly extensible, fully documented and degrades gracefully for non JavaScript enabled browsers where possible. MIT licensed and actively maintained.