jQuery 1.8.3, HTML, CSS, JavaScript
Knockout.js 2.2.1, HTML, CSS, JavaScript
jQuery 1.6.4, HTML, CSS, JavaScript
This is a simple Bootstrap skeleton. You can fork it to get a ready to use Bootstrap fiddle.
Mootools 1.4.5, HTML, CSS, JavaScript
Prototype 1.7.1, HTML, CSS, JavaScript
Knockout.js 2.1.0, HTML, CSS, JavaScript
http://stackoverflow.com/questions/9985241/displaying-a-hierarchytree-using-knockoutjs