The Madison Children's Museum mobile website offers a refined version of the main site. It is easy to navigate and gives just the information most people are looking for.

I wrote the entire mobile site and CMS myself in about 18 hours as a project for Goodstock 2010. The mobile site is no longer active for some reason.

jQuery

jQuery is a fast and concise cross-browser JavaScript Library that simplifies HTML document traversing, event handling, animating, and Ajax interactions for rapid web development. Used by over 31% of the 10,000 most visited websites, jQuery is the most popular JavaScript library in use today.