http://blog.csdn.net/wilsonke/article/details/9203583
http://wenku.baidu.com/link?url=n9MD2JwUgc_iqdj2dWnrbOBJZF_lVzsW_3NcC4hZ0CdLGF6fJhx5hvAJuuftFFJqN0U1zV_9RpVsnTGWMgIZMmbtFsPNRuKW7SUspMyDDe3
(常见操作网站)
http://wenku.baidu.com/link?url=cR2R21DbkojUwfjzN53UhF2lpjVs3rM4hrPITcvra_PQ2e1HAvjRQyLP8JsDVY70tkMof9EjPY1NRpIuH7Zh-pxdOp0gsMlzrfb5ushx_DK