我在网上看到一段flash，非常重要，但怎么也下不下来。用常规办法都试了，比如看临时文件，用一些flash捕获软件如flash catcher等捕到的都是一个很小的“start.swf”打开之后提示网页已过期。我是没有办法了，于是拷贝源文件，特此请教各位dx，帮帮我吧！！！
meta content="JavaScript" name="vs_defaultClientScript">
<meta content="http://schemas.microsoft.com/intellisense/nav4-0" name="vs_targetSchema">
<style type="text/css" media="screen">
<!--
@import url("/css/cs.css");
@import url("/css/show.css");
-->
</style>
<!--[if IE 6]>
<style type="text/css" media="screen">.MNB{width:766px;}</style>
<![endif]-->
</head>
<body id="stu">
<div id="t1" class="Top">
<div id="tL" align="center"><a href="/" accesskey="1"><img src="/imag/logo_g.gif" alt="北大附中附小网校" width="207" height="45" border="0" ></a></div>
<div id="tR" >
<div id="tRs"></div>
<div id="tRn"><a href="/" accesskey="0" class="s">首页</a> <a href="/Student/" accesskey="1">我的地盘</a> <a href='/Student/Courses/' accesskey="2">学习中心</a> <a href='/Student/QA/' accesskey="5">答疑中心</a> <a href='/Test/' accesskey="4">测试中心</a> <a href='/Community/' accesskey="3">绿野社区</a> <a href='/Service/' accesskey="6">客服中心</a></div>
</div>
</div>
<div id="Main" class="MNB">
<div id="Neck"><img src="/imag/shim.gif" alt="" height="1" /></div>
<div id="Content">
<form id="f1"><br>
<table cellSpacing="0" cellPadding="0" width="674" border="0">
<tr>
<td class="zhm" width="674">
<!-- HTMLPAGECONTENT -->
<div id="panPlayer">
<script type="text/javascript" src="/js/flashobject.js"></script>
<TABLE border="0" width="97%">
<TR>
<TD width="550">
<script type="text/javascript" language="javascript">
<!--
var sid = "jb23itmordx2srzwgc3h2u55";
var myFlash = new FlashObject("start.rswf?s=" + sid, "myCourse", "550", "400", 7, "#ffffff");
myFlash.addParam('menu', 'false');
myFlash.addVariable('title', '专题：椭圆、双曲线、抛物线的性质（1）');
myFlash.addVariable('p', 'c8f304b548b84c30a3a6c76629bf50f8');
myFlash.write();
//-->
</script>
</TD>
<TD nowrap="true"><br>
年级：高三<br>
科目：数学 <br>
教师：王燕谋
</TD>
</TR>
</TABLE>
</div>
<br>
</td>
</tr>
</table>
</form>
</div>
<table cellSpacing="0" cellPadding="0" width="740" border="0">
<tr>
<td width="480" background="/Student/images/bg_03.gif"><IMG height="1" src="/imag/shim.gif" width="1"></td>
</tr>
</table>
<table cellSpacing="0" cellPadding="0" width="734" border="0" height="60">
<tr vAlign="bottom" align="center">