.turn-btn .lb,
			.turn-btn .rb {
				width: 6px;
				height: 9px;
				background: url(img/btn.png) no-repeat;
				overflow: hidden;
				position: absolute;
				top: 3px;
				left: -10px;
				cursor: pointer;
			}
			
			.turn-btn .rb {
				background-position: -6px 0;
				left: 21px;
			}