Mootools 1.4.1, HTML, CSS, JavaScript
Quiz with choices resulting in Audio playback.
Mootools 1.3 (compat), HTML, CSS, JavaScript
No-Library (pure JS), HTML, CSS, JavaScript
by @simurai
A JS function to show on hover with accompanying HTML and CSS.
Mootools 1.4.5, HTML, CSS, JavaScript
Mootools 1.4.3 (compat), HTML, CSS, JavaScript