Protoscript is a simplified scripting language for creating Ajax style prototypes for the Web. With Protoscript it's easy to bring interface elements to life. Simply connect them to behaviors and events to create complex interactions.

By combining different behaviors with different elements and events you can create complex interactions without writing JavaScript.

Protoscript makes it easy to

- dynamically query for interface elements (by default uses jQuery for CSS-3 and xpath selector syntax)

- simple to express complex dependent behaviors (Just nest behaviors within callbacks or other behaviors -- uses JSON for underlying syntax)

- Add new behaviors, event callbacks, attributes with plug-in architecture

- Change selector technology or use completely different underlying toolkit with same plug-in architecture

Full description, docs, etc. at: http://prototscript.com