js 图片轮播

http://jingyan.baidu.com/article/e3c78d646afd933c4c85f5ac.html（测试过）

http://sc.chinaz.com/jiaoben/161028496650.htm

http://sc.chinaz.com/jiaoben/160524061300.htm#down（测试过）

http://jingyan.baidu.com/article/5d6edee2ef48c599eadeecc8.html

http://www.jb51.net/article/77921.htm

http://code.ziqiangxuetang.com/bootstrap/bootstrap-carousel-plugin.html

http://www.jb51.net/article/75806.htm

http://www.runoob.com/bootstrap/bootstrap-carousel-plugin.html