Low Pro: Unobtrusive Scripting For Prototype

Low Pro is a set of extensions to the Prototype library that make it easier to implement unobtrusive DOM scripting and forms the JavaScript component of the Unobtrusive JavaScript Plugin For Rails but can be used separately. It’s essentially a compilation of various tried and tested, previously published techniques adapted for use with Prototype and mainly centres around enhancing event handling and DOM manipulation. Low Pro uses portions of code and/or inspiration from Dean Edwards, Matthias Miller, Sylvian Zimmer, Justin Palmer and John Resig.

http://ajaxian.com/archives/unobtrusive-javascript-and-ajax-for-rails
http://www.danwebb.net/2006/9/3/low-pro-unobtrusive-scripting-for-prototype