Modernizr is an open-source JavaScript library that helps you build the next generation of HTML5 and CSS3-powered websites.

This HTML5 specification is like no other—It has been processed with you, the humble web developer, in mind.

The focus of this specification is readability and ease of access. Unlike the full HTML specification, this “web developer edition” removes information that only browser vendors need know.

To read about its conception, construction and future, read the press release.

— Ben Schwarz

interesting approach to an accordion. if IE isn’t a target, then this works. even works with the forward and backwards buttons in the browser.