http://visitmix.com/lab/glimmer

Glimmer: a jQuery Interactive Design Tool is a prototype from the Mix Online Labs which makes jQuery accessible through a visual tool. The objective for Glimmer is pretty simple: to enable the power of jQuery through an interactive design surface. If jQuery is the "write less, do more” JavaScript library, then Glimmer is the “write none, do more” jQuery design tool. Glimmer has three core audiences: power users, designers and developers.

Without having to write any JavaScript code, you can use Glimmer’s wizards to generate jQuery scripts for common interactive scenarios. Glimmer also has an advanced mode, providing a design surface for creating jQuery effects based on your existing HTML and CSS.