根据IP自动判断用户所在地的天气预报代码

[code]
  <iframe src="http://m.weather.com.cn/m/pn6/weather.htm" width="180" height="20" marginwidth="0" marginheight="0" hspace="0" vspace="0" frameborder="0" scrolling="no" allowtransparency="true"></iframe>


  <iframe allowtransparency="true" src="http://m.weather.com.cn/m/p2/weather1.htm" width="180" height="20" marginwidth="0" marginheight="0" hspace="0" vspace="0" frameborder="0" scrolling="No"></iframe>
[/code]