jQuery获取客户端ip，适用火狐、IE、谷歌、360浏览器

<script language="text/javascript" src="http://www.codefans.net/ajaxjs/jquery1.3.2.js"></script>
        <script type="text/javascript">
            var ip = "";
            $(document).ready(function() {
                jQuery(function($){
                     var url = 'http://chaxun.1616.net/s.php?type=ip&output=json&callback=?&_='+Math.random();
                     $.getJSON(url, function(data){
                          ip = data.Ip;
                     });
                 });
            });
        
            function readCardNoF()
            {    
                jQuery(function($){
                     var url = 'http://chaxun.1616.net/s.php?type=ip&output=json&callback=?&_='+Math.random();
                     $.getJSON(url, function(data){
                          ip = data.Ip;
                     });
                 });
      
            }