Mootools 1.4.2, HTML, CSS, JavaScript
No-Library (pure JS), HTML, CSS, JavaScript
Mootools 1.4.1, HTML, CSS, JavaScript
jQuery 1.6.3, HTML, CSS, JavaScript
…using opacity and margin-top (display isn’t transitionable, but these are)
Uses CSS multiple backgrounds, background-size, gradients, and transitions to create a 'shine effect' when hovering over the icon
from http://konigi.com/tools/css-techniques-horizontal-rules
from http://jsdo.it/ksk1015/cLLl
Rough CSS reproduction of the navigation found at http://beta.rallyinteractive.com/