Flash 8 V2 Tree component

import mx.controls.Tree;
var tree:Tree;
//不要丢了_root
_root.tree.labelFunction = function(node) {
  return node.nodeType == 1 ? node.nodeName : node.nodeValue;
};
var sample_xml:XML = new XML();
sample_xml.ignoreWhite = true;
sample_xml.onLoad = function(done) {
  if (done) {
    _root.tree.dataProvider = this;
  }
};
sample_xml.load('http://www.yady.net/blog/feed.asp?cat=1');