Golden ratio

I've been reading this article recently on use of the golden ratio within web design.
As a result I've developed a jQuery plugin to help in its implementation within my pages. You can find it here on my github page. It also include an index.html and custom.css to help demonstrate its use.
There are 2 implementations:

1. Creating a rectangle where the golden ratio width is derived from the height
2. Creating 2 rectangles based on their container height

Hope they help.