Flex LinkBar similar to iGoogle links

I wanted to create a Flex LinkBar that looks similar to the iGoogle links. The links are expandable (one level-deep) by clicking on a plus button. I've considered styling a Tree or Accordion to get the desired look and feel. But before I spend time on one approach versus another, I thought to ask first.

Does anyone know a component that I could use to achie开发者_如何转开发ve this? Or an example of someone doing a similar vertical navigation bar? It should only be one level deep and some parent nodes might not have children (doesn't expand).

Thanks in advance....

Just wanted to update with what I actually implemented. I ended up using a Tree and styled it to look and behave like a linkbar with that can have child links.