dhtmlxTree目录树增加右键菜单以及拖拽排序的实现

<script language="JavaScript" type="text/JavaScript" src="tree/jQuery1.6.2.js"></script>
<script type="text/javascript" src="tree/dhtmlxmon.js"></script>
<script type="text/javascript" src="tree/dhtmlxtree.js"></script> 
<script type="text/javascript" src="tree/jquery.contextmenu.js"></script>
<link rel="STYLESHEET" type="text/css" href="tree/dhtmlxtree.css">
<script language="JavaScript" type="text/JavaScript" src="js/dialog/dialog.js"></script>

<script type="text/javascript">
function showMsg(id,title,icon,str){
  art.dialog.through({id:'msg',title:title,icon:icon,drag:false,lock:true,content:str,ok:function(){art.dialog.close();}});
}

function tondrag(id, id2){
  alert(id);alert(id2);
    return confirm("Do you want to move node " + tree.getItemText(id) + " to item " + tree.getItemText(id2) + "?");
};

$(document).ready(function(){
  //$(document).bind("contextmenu",function(){return false;});
  //$(document).bind("selectstart",function(){return false;});
  tree = new dhtmlXTreeObject("treeboxbox_tree","100%","100%",0);
  tree.setSkin('dhx_skyblue');
  tree.setImagePath("./tree/imgs/");
  //tree.setImageArrays("plus", "open2.gif", "open2.gif", "open2.gif", "open2.gif", "open2.gif");
  //tree.setImageArrays("minus", "close2.gif", "close2.gif", "close2.gif", "close2.gif", "close2.gif");
  //设置节点图片 setStdImages('无子目录时的图片','节点展开后的图片','节点未展开时的图片')
  tree.setStdImages("folderClosed.gif", "folderOpen.gif", "folderClosed.gif");
  tree.enableDragAndDrop(1);//允许拖拽
  tree.enableTreeLines(false);
  tree.setOnRightClickHandler(function(id){
    //var i=tree.getSelectedItemId();
    //alert(i);
    tree.selectItem(id);
    $("#mm").val(id);
  });

  tree.setDragHandler(function(id,id2){//id为拖拽目录的ID，id2拖拽终点目录。将id2做为id的父目录。
    //art.dialog.confirm("Do you want to move node " + tree.getItemText(id) + " to item " + tree.getItemText(id2) + "?",function(){
      $.post("tree/move_folder.php",{id1:id,id2:id2},function(tips){
          //art.dialog.through({title:'信息',icon:'face-smile',lock:true,content:tips,ok:function(){art.dialog.close();location.reload();}});
      });
      return true;
    /