1.百度提供服务
http://developer.baidu.com/map/jsdemo.htm
2.html5获取地理位置信息 参考网址
http://blog.youkuaiyun.com/cyzero/article/details/42584193
http://www.jb51.net/article/77169.htm
http://blog.youkuaiyun.com/wustzbq0713/article/details/46387565
http://www.jb51.net/html5/317651.html
http://www.cnblogs.com/ZHF/p/4169634.html