window.close 在firefox无效，有解决方案是改firefox设置
Firefox地址栏里输入 about:config
在配置列表中找到 dom.allow_scripts_to_close_windows
点右键的选切换把上面的false修改为true即可。
这种方法要求每个用户都这样来一遍，不太可能。。。
解决方法：
var rand = parseInt(Math.random() * 100 + 1);
var rv = window.showModalDialog('Redirect.htm?ID=' + ID + '&rand=' + rand, '', "dialogWidth=680px;dialogHeight=580px;help:no;");
Redirect.htm：
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title>按模板导出Excel</title>
<meta name="GENERATOR" content="Microsoft Visual Studio .NET 7.1">
<meta name="ProgId" content="VisualStudio.HTML">
<meta name="Originator" content="Microsoft Visual Studio .NET 7.1">
<meta http-equiv="Pragma" content="no-cache">
<meta http-equiv="no-cache">
<meta http-equiv="Expires" content="-1">
<meta http-equiv="Cache-Control" content="no-cache">
<base target="_self" />
<script language="javascript">
function Load() {
window.Code.location.href = 'DepartmentEdit.aspx' + window.location.search;
}
</script>
</head>
<body topmargin=0 bottommargin=0 leftmargin=0 rightmargin=0 onload="Load()">
<table width=100% height=100% border=0 cellpadding=0 cellspacing=0>
<tr>
<td>
<iframe id=Code name=Code frameborder=0 height=100% width=100% scrolling="yes"></iframe>
</td>
</tr>
</table>
</body>
</html>
DepartmentEdit.aspx
parent.window.close();
问题解决