No-Library (pure JS), HTML, CSS, JavaScript
jQuery (edge), HTML, CSS, JavaScript
Mootools 1.3.2, HTML, CSS, JavaScript
Image-free method of creating Method & Craft's 'active nav' arrow; uses pseudo-elements.
http://noahstokes.com/esbueno/clip.html
Mootools 1.3.1 (compat), HTML, CSS, JavaScript
http://inspectelement.com/demos/css3/realism/book.html
jQuery 1.5, HTML, CSS, JavaScript
Mootools 1.3 (compat), HTML, CSS, JavaScript
http://www.cssplay.co.uk/menus/centered.html
http://css-tricks.com/examples/HoverEverythingBut