tree.on("contextmenu",function(node,e)
        {
            //node.select();
            //alert(node.id);
            e.preventDefault(); 
            var treeMenu = new Ext.menu.Menu
            ([
                {xtype:"button",text:"展开",icon:"resources/images/default/tree/folder-open.gif",pressed:true,handler:function(){node.expand(true,false)}},
                {xtype:"button",text:"收缩",icon:"resources/images/default/tree/folder.gif",pressed:true,handler:function(){node.collapse(true,true)}},
                {xtype:"button",text:"添加",icon:"resources/images/default/dd/drop-add.gif",pressed:true,handler:AddChildNode},
                {xtype:"button",text:"上移",icon:"resources/images/default/button/move-up.gif",pressed:true},
                {xtype:"button",text:"下移",icon:"resources/images/default/button/move-down.gif",pressed:true},
                {xtype:"button",text:"删除",icon:"resources/images/default/button/delete.gif",pressed:true}
                           
            ]);
            //定位菜单的显示位置
            treeMenu.showAt(e.getPoint());
        });