他妈的气死了--没有权限？？

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晕图片没有显示，就是点击一个按钮的时候：报没有权限的错误，昨天还没有，突然莫名奇妙的出现了这个问题！<%@ page language="java" import="java.util.*" pageEncoding="GBK"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://"
+ request.getServerName() + ":" + request.getServerPort()
+ path + "/";
%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>"> <title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<script language="JavaScript"
src="<%=request.getContextPath()%>/js/MzTreeView10.js" charset="GBK"></script>
<script language="JavaScript"
src="<%=request.getContextPath()%>/js/popup_layer.js" charset="GBK"></script>
<script language="JavaScript"
src="<%=request.getContextPath()%>/js/jquery-1.3.2.js" charset="GBK"></script>

</head>

<body>
<input type="button" value="显示" id="show" onclick="show()" />
<input type="text" name="id" id="content" value="" />
<div id="tree"></div> <table>
<tbody id="tb"> </tbody>
</table>
<script type="text/javascript">
   // alert(tree.toString());
function test(id){
document.getElementById("content").value=id;
}
function show(){
window.tree = new MzTreeView("tree");
   tree.icons["home"] = "user.gif";
    tree.icons["user"] = "user.gif";
    tree.icons["customer"]  = "customer.gif";
    tree.iconsExpand["book"] = "bookopen.gif"; //展开时对应的图片
    tree.setIconPath("<%=request.getContextPath() + "/images/"%>");
tree.nodes['0_1'] = "text:MzTreeView;icon:customer;";
tree.nodes['1_2'] = "text:节点一;icon:customer;method:test('2');";
tree.nodes['2_3'] = "text:子节点;icon:customer;method:test('3');";
var t = tree.toString();
alert(t);
var tbody = document.getElementById("tb");
alert("a");
var tr = tbody.insertRow(-1);
alert("b");
tr.setAttribute("id", '1');
alert("c");
var td1 = tr.insertCell(-1);
alert("d");
td1.innerHTML =t;
}
</script>
</body>
</html>