Defining an object is via literal notation. Supported in JavaScript1.2 and above, it’s a more robust form of creating an object on the fly.
Neat and clean approach to write reusable, readable and maintainable JavaScript code.

Show Love to the Object Literal:
http://ajaxian.com/archives/show-love-to-the-object-literal

Object literals beauty lies in Namespaces, which reduces the number of global variables in your pages. It uses a technique known as branching, which allows you to use common utility
functions without worrying about browser sniffing. Read More