#loopDiv{
            width: 740px;
            height: 540px;
            margin: 0 auto;
            position: relative;
			background-color: black;
        }
        
        #list{
            list-style: none;
        
            position: absolute;
            bottom: 10px;
            /* left: 250px; */
			right: 10px;
			/* background-color: blue; */
        }
        #list li{
            float: left;
            width: 20px;
            height: 20px;
            line-height: 20px;
            text-align: center;
            border-radius: 50%;
            background: #aaa;
            margin-right: 10px;
        }
        .chooseBut{
            width: 30px;
            height: 80px;
            background-color: rgba(0,0,0,0.2);
            color: #fff;
            font-size: 30px;
            line-height: 80px;
            text-align: center;
            display: none;
			/* padding: 10px 10px; */
        }
        #left{
            position: absolute;
            left: 0px;
            top: 250px;
        }
        #right{
            position: absolute;
            right: 0px;
            top: 250px;
        }