自动根据IP地址显示当天天气情况

var xmlHttp = createXML(); var xmlHttpCity = createXML(); function getWeather(City) { xmlHttp.onreadystatechange = returnWeather; xmlHttp.open("GET","Weather.asp?City=" + City,true); xmlHttp.setRequestHeader("If-Modified-Since","0"); xmlHttp.send(null); } function returnWeather() { if(xmlHttp.readyState == 4) { if(xmlHttp.status == 200) { setCv("Weather",bytes2BSTR(xmlHttp.responseBody)); } else { setCv("Weather","Server Error"); } } else { setCv("Weather","正在获取天气信息,请稍后..."); } } function getCity() { xmlHttpCity.onreadystatechange = returnCity; xmlHttpCity.open("GET","Ip.asp",true); xmlHttpCity.setRequestHeader("If-Modified-Since","0"); xmlHttpCity.send(null); } function returnCity() { if(xmlHttpCity.readyState == 4) { if(xmlHttpCity.status == 200) { getWeather(bytes2BSTR(xmlHttpCity.responseBody)); } else { setCv("Weather","Server Error"); } } else { setCv("Weather","正在获取地区信息,请稍后..."); } }