弹出窗口问题
<a href="prophoto.asp?id=<%=rs("id")%>"><img src="chphoto.asp?id=<%=rs("id")%>" width="150" height="120" border="0"></a>一个这样的连接，现在把它改成弹出窗口，根据图片的大小，而自动设定窗口大小
请教应该怎样写
大概意思
<script language="JavaScript" type="text/JavaScript">
<!--
function popup(str,name,num1,num2){
var loginWin =window.open(str,name,"top=100,left=200,width="+num1+",height="+num2+",scrollbars=yes,resizable=no");
}
-->
</script>
<a href="jacascript:popup(prophoto.asp?id=<%=rs("id")%>,"new",img1.width,img1.height)"><img id="img1" src="chphoto.asp?id=<%=rs("id")%>" width="150" height="120" border="0"></a>
