地图 判断点在区域内

http://www.cnblogs.com/relax/p/3507014.html

http://zhidao.baidu.com/link?url=-9srSDD7P0TLaERPDa3dqgUIeM2ZMGumFoB6C9d-4I-KeRXki3LqwgbkADEpk_ZltU_GryV429HIN5VvRqMnRbUIEmHvvtbbibXm18GHCCa

http://www.cnblogs.com/langu/p/4033608.html

http://blog.****.net/gf771115/article/details/42776631

http://api.map.baidu.com/library/GeoUtils/1.2/examples/simple.html

http://lbsyun.baidu.com/index.php?title=open/library

 http://developer.baidu.com/map/jsdemo/demo/f0_7.htm