锘縡unction $changeProvince() {
    China.fn.callFn("changeProvince");
}
function $changeCity() {
    China.fn.callFn("changeCity");
}
function $getProvince(_id){
    China.fn.callFn("getProvince", _id);
}
function $setRegion(_region) {
    China.fn.callFn("setRegion", _region);
}
function $getRegion() {
    var city = $("#region")||$("#city")||$("#province");
    return city.val();
}
var China = {};
China.fn = {
    callFn: function() {
        var method = arguments[0];
        var arg0 = arguments[1];
        if(China._data == undefined) {
            $.ajax({url:"/_district",success:function(data){China._data = $.parseJSON(data);China.fn[method](arg0);}});
        } else {
            China.fn[method](arg0);
        }
        return this;
    },
    getProvince: function(_id) {
        var options = "<option value=''>璇烽€夋嫨</option>";
        var provinceList = China._data.list;
        var i;
        for (i in provinceList) {
            var no = provinceList[i].no;
            var name = provinceList[i].name;
            options += "<option value=\"" + no + "\">" + name + "</option>";
        }
        var selectProvince = "<select onchange='$changeProvince()' id='province'>" + options + "</select>";
        $("#" + _id).prepend(selectProvince);
    },
    setRegion: function(_region) {
        var provinceNo = _region.substring(0, 2) + "0000";
        var cityNo = _region.substring(0, 4) + "00";
        $("#province").val(provinceNo);
        $changeProvince();
        var provinceList = China._data.list;
        var province;
        var i = 0;
        for (i in provinceList) {
            if (provinceList[i].no == provinceNo) {
                province = provinceList[i];
                break;
            }
        }
        if (province == undefined) {
            return;
        }
        var cityList = province.list;
        var city;
        i = 0;
        for (i in cityList) {
            if (cityList[i].no == cityNo) {
                city = cityList[i];
                break;
            }
        }
        if (city == undefined) {
            $("#city").remove();
            var options = "";
            for (var j in cityList) {
                var no = cityList[j].no;
                var name = cityList[j].name;
                options += "<option value=\"" + no + "\">" + name + "</option>";
            }
            $("#province").after("<select id='region' name='data.region'>" + options + "</select>");
        } else {
            $("#city").val(cityNo);
            $changeCity();
        }
        $("#region").val(_region);
    },
    changeProvince: function() {
        $("#city").remove();
        $("#region").remove();
        var provinceNo = $("#province").val();
        var provinceList = China._data.list;
        var currentProvince;
        for (var i in provinceList) {
            if (provinceList[i].no == provinceNo) {
                currentProvince = provinceList[i];
                break;
            }
        }
        var options = "<option value=''>璇烽€夋嫨</option>";
        if (currentProvince == undefined) {
            $("#province").after("<select onchange='$changeCity()' id='city'>" + options + "</select>");
            return;
        }
        var cityList = currentProvince.list;
        for (var j in cityList) {
            var no = cityList[j].no;
            var name = cityList[j].name;
            options += "<option value=\"" + no + "\">" + name + "</option>";
        }
        $("#province").after("<select onchange='$changeCity()' id='city'>" + options + "</select>");
    },
    changeCity: function() {
        $("#region").remove();
        var provinceNo = $("#province").val();
        var cityNo = $("#city").val();
        var provinceList = China._data.list;
        var province;
        var i = 0;
        for (i in provinceList) {
            if (provinceList[i].no == provinceNo) {
                province = provinceList[i];
                break;
            }
        }
        var options = "<option value=''>璇烽€夋嫨</option>";
        if (province == undefined) {
            return;
        }
        var cityList = province.list;
        var city;
        i = 0;
        for (i in cityList) {
            if (cityList[i].no == cityNo) {
                city = cityList[i];
                break;
            }
        }
        if (city == undefined) {
            return;
        }
        var countyList = city.list;
        if (countyList == undefined) {
            $("#city").after("<input type='hidden' value='" + city.no + "' name='data.region' id='region'>");
            return;
        }
        for (var j in countyList) {
            var no = countyList[j].no;
            var name = countyList[j].name;
            options += "<option value=\"" + no + "\">" + name + "</option>";
        }
        $("#city").after("<select name='data.region' id='region'>" + options + "</select>");
    }
};