jQuery 1.8.3, HTML, CSS, JavaScript
jQuery 1.9.1, HTML, CSS, JavaScript
jQuery 1.6.4, HTML, CSS, JavaScript
Bootstrap 2.1.1 seems to have an issue in Chrome and Firefox. The first time you expand a collapsed menu in responsive mode, it sets a fixed height.
No-Library (pure JS), HTML, CSS, JavaScript
Let's see a very very basic integration of the awesome "card flip" effect with simple CSS3 properties. Feel free to use/share/contribute.
Mootools 1.4.4, HTML, CSS, JavaScript