Mootools 1.4.1, HTML, CSS, JavaScript
jQuery 1.7, HTML, CSS, JavaScript
jQuery 1.6.4, HTML, CSS, JavaScript
Mootools 1.4.0, HTML, CSS, JavaScript
Inspired by Chris Coyier's article here: http://css-tricks.com/14402-radio-buttons-with-2-way-exclusivity/ Added event delegation and value switching.