While working on the template for this site (a never ending process), I came across the YUI Library. It is a collection of javascript and css to help you create better structured websites. I was able to add the links to my template and clean up my own CSS stylesheet. I have been pleased with the results, and plan to continue to modify my template to take advantage of all the library has to offer.

The Yahoo! User Interface (YUI) Library is a set of utilities and controls, written in JavaScript, for building richly interactive web applications using techniques such as DOM scripting, DHTML and AJAX. The YUI Library also includes several core CSS resources. All components in the YUI Library have been released as open source under a BSD license and are free for all uses.

More information can be found here -- http://developer.yahoo.com/yui/