This demo illustrates a pure JavaScript / CSS application that creates a variable number of colored boxes in a 3D cloud, which rotates in the direction of your cursor movement. It is a tangible test of a browser's JavaScript execution efficiency. Implementations for ExtJS and MooTools are available.
Historically, the demo has been located at
http://trac.puremvc.org/Demo_JS_BoxSplash It has now been moved to
https://github.com/PureMVC/puremvc-js-demo-boxsplash/wikiThe original author is Justin Wilaby who used Mootools and the now deprecated Mootools PureMVC port.
Tony DeFusco ported it to ExtJS 3 and 4 using the Native JS MultiCore port.