Ext viewport 中使用tree 还是加载不出

Question

[code="java"]Ext.BLANK_IMAGE_URL='./scripts/ext/resources/images/default/s.gif';
Ext.QuickTips.init();
var left;

Ext.onReady(function(){
var top = new Ext.Panel({
region:"north",
title:"LOGO",
height:80,
html:"这放LOGO"
});
left = new Ext.tree.TreePanel({
region:"west",
title:"功能导航",
collapsible:true,
split:true,
containerScroll:true,
autoScroll:true,
width:200,
listeners:{
dblclick:function(n){
var url=n.attributes.url;
var id =n.attributes.id;
if(url){
if(center.getItem(id)){
//表示标签已打开，则激活
center.setActiveTab(id);
}else{
var p =new Ext.Panel({
title:n.attributes.text,
id:id,
autoLoad:{url:url,scripts:true},

                        closable:true
                    });
                    center.add(p);
                    center.setActiveTab(p);
                }

            }
        }
    }
});

var root = new Ext.tree.TreeNode({id:"1",text:"员工管理系统",leaf:"false"});
var addEmp=new Ext.tree.TreeNode({d:"2",text:"新增员工",url:"addemp.jsp"});
var empList= new Ext.tree.TreeNode({id:"3",text:"员工信息维护",url:"emplist.html"});

root.appendChild([addEmp,empList]);
left.setRootNode(root);

var center = new Ext.TabPanel({
    region:"center",
    defaults:{autoScroll:true},
    items:[{
        title:"首页",
        html:"欢迎使用本系统！",
        id:"index"
    }],
    enableTabScroll:true
});
center.setActiveTab("index");

var bottom= new Ext.Panel({
    region:"south",
    html:"版权所有，翻版必究!",
    bodyStyle:"padding:10px;text-align:center;font-size:12px"
});

var vp = new Ext.Viewport({
    layout:"border",
    items:[top,left,center,bottom]
})
left.expandAll();

})
[/code]

Answer 1

写的路径不对 访问不到