Yii目录树扩展ztree，ctree等

ztree：

http://blog.****.net/jake451/article/details/7091449

http://hi.baidu.com/qiangtan/item/e85c483686eccbf62784f4c0

http://www.yiiframework.com/extension/ztree/

搜索Yii扩展：http://www.yiiframework.com/extensions/?tag=tree

ctree：http://www.yiiframework.com/extension/ctree/

dynatree：http://www.yiiframework.com/extension/dynatree/