https://www.cnblogs.com/chenhaib/archive/2011/07/29/2120782.html as3 实现树形菜单并带滚动条
资料网站
http://www.jb51.net/flash/actionscript/list84_1.html
https://blog.csdn.net/linjf520/article/category/1079036
http://www.shirne.com/cate-45#list 舞风弄墨--临风小筑
