Flex Component: FlowBox Container

I found several Flex Containers can handle automatic wrapping child component.

1. Eric Cancil version(best practice):
   http://blog.3r1c.net/
   This is the best I've seen.
   
2. Tony Fendall version:
   http://www.munkiihouse.com/?p=60
   Tony's FlowBox use HBox as sub container, add child to HBox, when the HBox is full, create new one to add child. But there are some issues, especially the HBox scrollingBar appear sometime.
3. FlexLib version:
   This version handle the basic function of wrapping but limited to horizontal only and doesn't have many inherited style from box/container.

There are some more experiment like Flow Layout in Adobe cookbook and Flow Layout in Adobe Exchange By jamesjaco, but they are not coded carefully.