Astra─Tree component in AS 3.0

i discover component library in Flash CS3 has no tree component.
And i don't know why Adobe doesn't support it now.
so i search the google .....super!! Finally i found yahoo developer center provides useful components in AS3.0.

http://developer.yahoo.com/flash/

yahoo developer center includes a lot of information like Astra Flash Library Documentation to intro how to use them. even you can download all source to your computer including library document. ha... it is not bad.
although, i not yet use it's componen. but i hope it's component support dynamic showing icons in AS3.0.

2008/9/9

I used tree component and try to show dynamic icons by external file.....But it was not work....Maybe my ability isn't good enough. 

I find someone resolve like kind of problem, but his developing environment is in Flex builder.

i also find that tree component still exists in Flex 3. And there are a lot of components to use in Flex.....> <. I think I will learn Flex developing environment  someday.