bootStrap 写的弹出框

<span  href="#myModal" role="button" class="btn" data-toggle="modal">移动到</span>    <div id="myModal" class="modal hide fade" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true"> <div class="modal-header">    <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>        <h3 id="myModalLabel">移动到</h3>  </div>        <div class="modal-body">            <ul id="treeDemo1" class="ztree"></ul>            </div>                 <div class="modal-footer">               <button class="btn" data-dismiss="modal" aria-hidden="true" onclick="moved()">确定</button>      <button class="btn" data-dismiss="modal" aria-hidden="true">关闭</button>  </div>  </div>