Advanced javascript developer to build a webbug which aggregates multiple popular webbugs

This project is meant for advanced javascript developers only. The goal of this project is to create a single javascript webbug which unifies the following popular webbugs: 1. Google Analytics 2. Quantcast 3. Omniture 4. Chartbeat The goal is to allow a site to use just a single javascript webbug, instead of having four different webbugs. The most important thing is that each of the included webbugs still delivers the same information to it's service, and that this doesn't negatively affect the performance of the page load time. Requirements: 1. The javascript does not block the page load, by using some modern techniques to load it asynchronously. This is extremely important. Links to more information below. 2. The javascript must be cross-browser compliant. 3. You expect other webbugs will be added in the future. Information on loading javascript without blocking the page load: 1. [login to view URL] 2. [login to view URL] 3. [login to view URL]