jsp页面传入一个flash，结果页面显示空白什么都没有

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<%
Enumeration emC = request.getParameterNames();
String reStr="";
while (emC.hasMoreElements()) {
String paraEm=emC.nextElement().toString();
String paraEmValue=request.getParameter(paraEm);
reStr=reStr+"&"+paraEm+"="+paraEmValue;
}
if(reStr.length()>0){
reStr="?"+reStr.substring(1);
}
%>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<style>
body { margin: 0px; overflow:hidden }
  </style>
    <link rel="shortcut icon" href="favicon.ico" mce_href="favicon.ico" type="image/x-icon" />
<script type="text/javascript" src="swfobject.js"></script>
<script type="text/javascript" src="tooltipinterface.js"></script>
<script type="text/javascript">
function getURLArgs(){
    var _s="<%=reStr%>";
return _s;
    }
   
var flashvars = {};
var params = {allowfullscreen:"true" , bgcolor:"#FFFFFF"};
var attributes = {};
swfobject.embedSWF("topoview.swf", "myContent", "100%", "100%", "9.0.0", "expressInstall.swf", flashvars, params, attributes);

</script>
</head>
<body scroll="no">
<div id="myContent">
<h1>Alternative content</h1>
<p><a href="http://www.adobe.com/go/getflashplayer"><img src="http://www.adobe.com/images/shared/download_buttons/get_flash_player.gif" alt="Get Adobe Flash player" /></a></p>
</div>
</body>
</html>