/*本例css*/
.video_box { width: 290px; height: 190px; position: relative; overflow:hidden;  }

/*数字按钮样式*/
.video_box .num { overflow:hidden; height: 25px; position: absolute; bottom:12px; left: 15px; zoom:1; z-index:3; display:none; }
.video_box .num li { width: 25px; height: 25px; line-height: 25px; text-align: center; font-weight: 400; font-family: "微软雅黑", Arial; color: #FFFFFF; background: #444444; margin-right: 10px; border-radius:50%; cursor:pointer; float: left; }
.video_box .num li.on { background: #FF7700; } /*当前项*/

/*上一个  下一个*/
.video_box .prev,
.video_box .next { display: none; width: 20px; height: 70px; position: absolute; top: 40px;}
.video_box .prev { left: 0;  background: url(images/prev_btn.png) no-repeat;}
.video_box .next { right: 0;  background: url(images/next_btn.png) no-repeat;}