通过W3C标准发现用户的地理位置(Google Maps)
Google Maps version 3支持发现用户的地理位置，Google建议使用W3C Maps的标准发现用户的Geolocation,下面的js代码来源Google Code：
// Note that using Google Gears requires loading the Javascript
// at http://code.google.com/apis/gears/gears_init.js
var initialLocation;
var siberia = new google.maps.LatLng(60, 105);
var newyork = new google.maps.LatLng(40.69847032728747, -73.9514422416687);
var browserSupportFlag = new Boolean();
function initialize() {
var myOptions = {
zoom: 6,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
// Try W3C Geolocation (Preferred)
if(navigator.geolocation) {
browserSupportFlag = true;
navigator.geolocation.getCurrentPosition(function(position) {
initialLocation = new google.maps.LatLng(position.coords.latitude,position.coords.longitude);
map.setCenter(initialLocation);
}, function() {
handleNoGeolocation(browserSupportFlag);
});
// Try Google Gears Geolocation
} else if (google.gears) {
browserSupportFlag = true;
var geo = google.gears.factory.create('beta.geolocation');
geo.getCurrentPosition(function(position) {
initialLocation = new google.maps.LatLng(position.latitude,position.longitude);
map.setCenter(initialLocation);
}, function() {
handleNoGeoLocation(browserSupportFlag);
});
// Browser doesn't support Geolocation
} else {
browserSupportFlag = false;
handleNoGeolocation(browserSupportFlag);
}
function handleNoGeolocation(errorFlag) {
if (errorFlag == true) {
alert("Geolocation service failed.");
initialLocation = newyork;
} else {
alert("Your browser doesn't support geolocation. We've placed you in Siberia.");
initialLocation = siberia;
}
map.setCenter(initialLocation);
}
}
这个为成都市民提供方便的爱心雨伞，搞半天是摆设嗦？下雨天都还拿来锁起，这是为什么呢？ 
这个东西到底有没有人管哦？好久打开，好久锁？哪个晓得？ 
善哉善哉~铁盒子上美其名曰“成都好人”，希望可以真正的为咋们成都市民提供用处哈。
