Meebo Bar embed code

The Meebo Bar loads asynchronously by creating a same-domain iframe and injecting the javascript loading code into that iframe. Read http://web.archive.org/web/20110623052414/http://blog.meebo.com/?p=2956 for an overview, see the commented code for details, and watch the Velocity 2010 presentation for an overview of the Meebo Bar performance in general (http://www.youtube.com/watch?v=b7SUFLFu3HI)