I'm guessing a combination of javascript and css media queries. http://twitter.com/#!/beep http://twitter.com/#!/beep and http://twitter.com/#!/scottjehl http:

I'm guessing a combination of javascript and css media queries. http://twitter.com/#!/beep http://twitter.com/#!/beep and http://twitter.com/#!/scottjehl http://twitter.com/#!/scottjehl were both part of this project. Ethan Marcotte has a responsive web design book that recently came out. http://www.abookapart.com/products/responsive-web-design http://www.abookapart.com/products/responsive-web-design I think there's 20% off today with the code BOSTON for the launch of the Globe's site as well.