Mootools 1.3 (compat), HTML, CSS, JavaScript
Mootools 1.4.5 (compat), HTML, CSS, JavaScript 1.7
jQuery 1.4.4, HTML, CSS, JavaScript
jQuery 2.0.0b1, HTML, CSS, JavaScript
http://stackoverflow.com/questions/4106870/jquery-how-to-select-other-elements-based-on-their-relationship-with-an-element/4106906#4106906
http://stackoverflow.com/questions/4103623/custom-jquery-plugin-exposing-methods-and-storing-element-information/4103687#4103687