简单的问题（新手）

代码如下，打开login.aspx，关闭本窗口。
<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<object id="WebBrowser" width="0" height="0" classid="CLSID:8856F961-340A-11D0-A96B-00C04FD705A2">
</object>
<script language="JavaScript">
var w=screen.width /2 -200;
var h=screen.height /2 -150;
var loginwin=window.open("login.aspx","","width=380,height=230,toolbal=0,location=0,status=0,menubar=0,scrollbars=0,resizable=0,maximizeButton=0,minmizeButton=0,top=" + h + ",left=" +w);
document.all.WebBrowser.ExecWB(45,1);
</script>
<link rel="stylesheet" type="text/css" href="../default.css">
</head>
<body>
</body>
</html>