function toChineseDay(day)
{
 var retVal = day;
 switch(day)
 {
  case ("Sunday"):
    retVal = "星期天";
    break;
  case ("Monday"):
    retVal = "星期一";
    break;
  case ("Tuesday"):
    retVal = "星期二";
    break;
  case ("Wednesday"):
    retVal = "星期三";
    break;
  case ("Thursday"):
    retVal = "星期四";
    break;
  case ("Friday"):
    retVal = "星期五";
    break;
  case ("Saturday"):
    retVal = "星期六";
    break;
  default:
    break;
 }
 return retVal;
}

function toChineseString(str)
{
 var retVal = str;
 switch (str)
 {
  case ("Clear"): case ("Fair"): case ("AM Sun"): case ("PM Sun"):
    retVal = "晴";
    break;
  case ("Cloudy"): case ("PM Clouds"): case ("AM Clouds"):
    retVal = "阴";
    break;
  case ("Mostly Cloudy"): case ("Partly Cloudy"):
    retVal = "多云";
    break;
  case ("Showers"):
    retVal = "阵雨";
    break;
  case ("Sprinkles"): case ("PM Rain"): case ("AM Rain"):
    retVal = "小雨";
    break;
  case ("Cloudy / PM Sun"): case ("Cloudy / AM Sun"):
    retVal = "阴转晴";
    break;
  case ("Showers / Clear"):
    retVal = "小雨转晴";
    break;
  case ("Scattered Flurries"):
    retVal = "分散小雪";
    break;
  case ("Not Available"):
    retVal = "没有信息";
    break;
  default:
    break;
 }
 return retVal;
}

function ForeCastData()
{
 var SkyCode;
 var SkyText;
 var High;
 var Low;
 var Date;
 var Day;
}

function ForeCastArray(n)
{
 for(var i = 0; i < n; i++)
 this[i] = new ForeCastData();
}

function WeatherData()
{
 var RetCode = 0;
 var Latitude;
 var Longitude;
 var SkyCode;
 var RequestPending;
 var Location;
 var SkyText;
 var Temperature;
 var Attribution2;
 var Url;
 var ForeCastA = new ForeCastArray(5);
 var Count = 0;

 this.item = function(i) {
  return this;
 }
 this.makeForeCast = function(i, c, t, h, l, dt, dy) {
  ForeCastA[i].SkyCode = c;
  ForeCastA[i].SkyText = t;
  ForeCastA[i].High    = h;
  ForeCastA[i].Low     = l;
  ForeCastA[i].Date    = dt;
  ForeCastA[i].Day     = dy;
 }
 this.ForeCast = function(i) {
  return ForeCastA[i];
 }
}

function MSNWeather(){
 var RequestPending = false;
 var RefreshInterval = 60;
 var Celsius = true;
}

MSNWeather.prototype={
 SearchByCode:function(locCode){
  var self = this;
  var xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
  xmlDoc.async=true;
  xmlDoc.onreadystatechange = function() {
   if (xmlDoc.readyState == 4)
   {
    if(xmlDoc.parseError.errorCode != 0)
    {

    }
    else
    {
     var wdata = new WeatherData();
     wdata.Latitude    = parseFloat(xmlDoc.selectSingleNode("/weatherdata/weather/@lat").value);
     wdata.Longitude   = parseFloat(xmlDoc.selectSingleNode("/weatherdata/weather/@long").value);
     wdata.Location    = xmlDoc.selectSingleNode("/weatherdata/weather/@weatherlocationname").value;
     wdata.Attribution = xmlDoc.selectSingleNode("/weatherdata/weather/@attribution").value;
     wdata.Attribution2= xmlDoc.selectSingleNode("/weatherdata/weather/@attribution2").value;
     wdata.Url         = xmlDoc.selectSingleNode("/weatherdata/weather/@url").value;
     wdata.SkyCode     = parseInt(xmlDoc.selectSingleNode("/weatherdata/weather/current/@skycode").value);
     wdata.SkyText     = toChineseString(xmlDoc.selectSingleNode("/weatherdata/weather/current/@skytext").value);
     wdata.Temperature = parseInt(xmlDoc.selectSingleNode("/weatherdata/weather/current/@temperature").value);
     wdata.Temperature = isNaN(wdata.Temperature)?0:wdata.Temperature;
     if (self.Celsius)
       wdata.Temperature = convert(wdata.Temperature);
     for (var i = 1; i <= 5; i++)
     {
      var node = xmlDoc.documentElement.childNodes[0].childNodes[i];
      var SkyCode = parseInt(node.getAttribute("skycodeday"));
      var SkyText = toChineseString(node.getAttribute("skytextday"));
      var High    = node.getAttribute("high");
      if (self.Celsius)
        High = convert(parseInt(High));
      var Low     = node.getAttribute("low");
      if (self.Celsius)
        Low = convert(parseInt(Low));
      var Date    = node.getAttribute("date");
      var Day     = toChineseDay(node.getAttribute("day"));
      wdata.makeForeCast(i-1, SkyCode, SkyText, High, Low, Date, Day);
     }
     wdata.RetCode = 200;
     wdata.Count = 1;
     self.OnDataReady(wdata);
    }
   }
  };
  xmlDoc.load("http://weather.service.msn.com/data.aspx?src=vista&wealocations="+locCode);
 },
 OnDataReady:function(data){}
}