No-Library (pure JS), HTML, CSS, JavaScript
Mootools 1.4.5, HTML, CSS, JavaScript
YUI 3.6.0, HTML, CSS, JavaScript
YUI 3.5.0, HTML, CSS, JavaScript
Using CSS :before with borders to create arrows and banner corners.
Creative layout using inline blocks and tiles. Note: This only works as well as it does because of the fixed number of elements and fixed element heights.