Tree扩展
<ul class="tree [treeFolder treeCheck [expand|collapse]]" oncheck="kkk">
<li><a href="#" target="navTab" rel="main" tname="name" tvalue="value" checked="true">第一级菜单项 A</a>
            <ul>
                  <li><a href="#" target="dialog" rel="dialog1" tname="name" tvalue="value" checked="true">第二级菜单项 A </a></li>
                  <li><a href="#">第二级菜单项 B </a></li>
                  <li><a href="#">第二级菜单项 C </a>
                        <ul>
                              <li><a href="#">第三级菜单项 A </a></li>
                              <li><a href="#">第三级菜单项 B </a></li>
                        </ul>
                  </li>
            </ul>
      </li>
      <li><a href="#">第一级菜单项 B</a></li>
</ul>