请问怎样任意定制一个网页的大小，如一个网站的首页。网上所介绍的都是通过链接或行为来定制并打开一个新窗口。如：
<script language="javascript">
<!--
var gt = unescape('%3e');var popup = null;var over = "Launch Pop-up Navigator";popup = window.open('', 'popupnav', 'width=160,height=160,resizable=1,status=yes,menubar=no,scrollbars=yes');if (popup != null) {if (popup.opener == null) {popup.opener = self; }popup.location.href = 'pop.htm';}
//-->
</script>

怎样将以上代码应用到首页index.htm?