ext4.0超链接新手有关问题 _HTML/CSS

ext4.0超链接新手问题
小弟初学EXT对超链接还是不太理解求大神解答需求如下
我想在右边面板上创立一个超链接比如百度就显示在中间面板上~

<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" " http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<link rel="stylesheet" type="text/css"
href="ext4/resources/css/ext-all.css">
<script type="text/javascript" src="ext4/ext-all-debug.js"></script>
<script type="text/javascript" src="ext4/ext-lang-zh_CN.js"></script>
<title>请点击我</title>
</head>
<body>
<script type="text/javascript">
Ext.onReady(function() {

    var productPanel = new Ext.Panel({
                title : '    模块 1   ',
                //layout : 'fit',
                id:'productPanel',
                defaults : {
                    // applied to each contained panel
                    bodyStyle : 'padding:0px'
                },
                layout: {
                    type: 'accordion',
                    animate: true
                },
                items : [{
                            title : '水质部分',