jquery解析json ,IE 中解析正常 ,firefox chorme 解析失败

利用服务 http://m.weather.com.cn/data/101240101.html

获取南昌天气信息，返回格式是 json ，但是利用jquery 解析的时候，IE 解析数据成功正常显示，FireFox chrome 下解析失败，各位帮忙看看是啥原因。

json格式大概如下(可以通过上面链接查看 json 完全内容)：

{"weatherinfo":
    {"city":"南昌",
    "city_en":"nanchang",
    "date_y":"2010年9月1日",
    "date":"庚寅年七月廿三",
    "week":"星期三",
    "fchh":"11",
    "cityid":"101240101",
    "temp1":"32℃~26℃",
    ......
    "tempF1":"89.6℉~78.8℉",
    ......
    "weather1":"多云转阵雨",
    .....
    }
}
页面解析代码

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
  <head>        
    <meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
    <title>获取天气</title>    
    <style type="text/css">
        body{font-size:14px;font-family:微软雅黑;background:#f6f6f6;text-align: center;}
    </style>
    <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script>
    <script type="text/javascript">
    jQuery(function($){
        getWeather();
    });
    function setWeather(tID, tCity, tTip, tWendu, tFengli , img1 , img2) {
        $("#jsCity").html("<a href='http://www.weather.com.cn/html/weather/" + tID + ".shtml' target=_bank>" + tCity + "</a>");
        var tqimg = "<img src='weatherimgs/"+img1+".gif'><img src='weatherimgs/"+img2+".gif'>";
        $("#jsWeather").html(tqimg + tTip + " " + tWendu);
    }
    function getWeather() {
        var weajs = "http://m.weather.com.cn/data/101240101.html";
        $.getJSON(weajs, function (objJson) {
            var cityname = objJson.weatherinfo.city;          //南昌
            var id = objJson.weatherinfo.cityid;               //101240101
            var cityinfo1 = objJson.weatherinfo.weather1;     //天气
            var cityinfo2 = objJson.weatherinfo.weather2;
            var wd1 = objJson.weatherinfo.wind1;            //风向
            var wd2 = objJson.weatherinfo.wind2;
            var fl1 = objJson.weatherinfo.fl1;                //风力
            var fl2 = objJson.weatherinfo.fl2;
            var temp1 = objJson.weatherinfo.temp1;            //温度
            var temp2 = objJson.weatherinfo.temp2;
            var img1 = objJson.weatherinfo.img1;            //天气图标1
            var img2 = objJson.weatherinfo.img2;            //天气图标2
            var img3 = objJson.weatherinfo.img3;
            var img4 = objJson.weatherinfo.img4;
            var index = objJson.weatherinfo.index;
            var index_d = objJson.weatherinfo.index_d;
            var index_xc = objJson.weatherinfo.index_xc;
            var index_uv = objJson.weatherinfo.index_uv;
            var date = objJson.weatherinfo.date;
            var date_y = objJson.weatherinfo.date_y;
            var imgtitle1 = objJson.weatherinfo.img_title1;
            var imgtitle2 = objJson.weatherinfo.img_title2;
            var imgsingle = objJson.weatherinfo.img_single;
            var imgtitlesingle = objJson.weatherinfo.img_title_single;
            setWeather(id, cityname, cityinfo1, temp1, wd1, img1, img2);
        });
    }
    </script>
  </head>
  <body>
    <div>
        <span id='jsCity'>南昌</span>
        <span id='jsWeather'>loading...</span>
    </div>
    <div id="show"></div>
  </body>
</html>

页面运行后，IE 中解析正常如下图：
screenshot