This post is not directly related to jQuery but is pertinent to js+html5 development. I am trying to move my team of developers entirely away from flash development to js+html5 but there is one piece of flash functionality that I have no idea how to emulate. 

In Flash you can create MovieClip object that lives entirely in its own namespace and only requires me to embed one swf file. The MovieClip object does not necessarily contain a movie. It could contain an interactive animation, audio player, or small interactive widget.

Is there anyway I could do something like this w/ js + html? that is embed an arbitrary piece of functionality anywhere in my html, everything in 1 file, and not have to worry about namespace conflicts?