用行为可能行，你试看。我试了。
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>无标题文档</title>
<style type="text/css">
<!--
.style1 {
color: #FF0000;
font-family: "创艺繁综艺", "创艺繁线体", "创艺繁细圆", "创艺繁魏碑", "创艺繁隶书";
font-size: 36px;
}
-->
</style>
<script language="javascript" type="text/javascript">
<!--
function MM_openBrWindow(theURL,winName,features) { //v2.0
window.open(theURL,winName,features);
}
//-->
</script>
</head>
<body>
<table width="91%" height="139" border="0" cellpadding="0" cellspacing="1">
<tr>
<td><div align="center"><span class="style1" onMouseOver="MM_openBrWindow('http://amnet.51.net','弹出窗口大小','location=yes,width=150,height=100')">弹出窗口的大小</span></div></td>
</tr>
</table>
</body>
</html>
