javascript弹出一个指定大小的窗口

<script language="JavaScript">
function js_show(per_id)
{
   window.open('/weihu/person/viewResume.jsp?perID='+per_id, 'resume', 'resizable=yes,menuBar=0,toolBar=0,scrollbars=yes,width=800,height=600,left=120,top=50');
}
</script>

perID对应msg.getFromUserId()

"<a href='javascript:js_show("+msg.getFromUserId()+");'><font color='blue'>"+msg.getFromUserName()+"</font></a>"