Glossy.js (now with IE 6/7 support)
http://www.netzgesta.de/glossy
"Glossy.js 1.2 allows you to add corners and shading and shadow to images on your webpages (alternatively: corner.js)."
A Simple, Lightweight JavaScript Templating Engine
http://cfis.savagexi.com/articles/2007/06/13/a-simple-lightweight-javascript-templating-engine
"Creating a template engine in JavaScript is remarkably easy due to the power of String's replace method"