Creating Namespaces Within Your JavaScript

Have you ever worked on a project that had a ton of Javascript in it? Not only that, but let me add that the project also made no good use of a Javascript framework. A lot of times when working in a project rich in Javascript, I find functions just defined all over the place without any rhyme or reason. Sometimes it is hard to judge if you are re-defining a function or not. This can get quite hairy, especially without the use of a tool that supports Javascript intellisense such as Visual Studio 2008. If you have been through these pains much as I have, then here is your saving grace.