静态页面的刷新问题(含简单源码),请高手帮忙看看
<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<script language="JavaScript">
function change1()
{
var freshtime1=document.form1.freshtime.options[document.form1.freshtime.selectedIndex].value;
document.write("<META HTTP-EQUIV='REFRESH' CONTENT='"+freshtime1+"; URL=test.htm'>"); ---本页面文件名为test.htm
}
</script>
</head>
<body>
<form name="form1" method="post" action="">
<select name="freshtime" onChange="change1();">
<option value="no">不自动刷新</option>
<option value=60>1分钟</option>
<option value=120>2分钟</option>
</select>
</form>
</body>
</html>
说明:本页面文件名为test.htm~~~~
请问要实现根据SELECT选择的值来刷新页面应怎做~~~~~