js ip get cityname

ina.com.cn

 <script language="javascript" type="text/javascript"  src="http://int.dpool.sina.com.cn/iplookup/iplookup.php?format=js"></script>

alert(remote_ip_info.city);

qq.com

<script src="http://fw.qq.com/ipaddress" type="text/javascript" charset="gb2312"></script>

alert(IPData[2]);