web 地图api
baidu:http://openapi.baidu.com/map/examples.html
google:http://code.google.com/intl/zh-CN/apis/maps/documentation/javascript/v2/demogallery.html
google:http://code.google.com/intl/zh-CN/apis/maps/documentation/javascript/v2/services.html#Directions
google map for flash : http://code.google.com/intl/zh-CN/apis/maps/documentation/flash/intro.html
http://code.google.com/intl/zh-CN/apis/maps/documentation/flash/tutorial-flash.html
