.tab{float: left;}.tab ul {margin: 0;list-style: none;text-align: center;white-space: nowrap;overflow: hidden;}.tab li {display: inline;margin: 0;padding: 0;}.tab a {float: left;display: block;text-indent: -9999px;width: 186px;height: 40px;background: url(./images/top_tab_bt.gif);}.tab a#tabA{background-position: 0 0;}.tab a#tabA:hover{background-position: 0 40px;}.tab a#tabB{background-position: -187px 0;}.tab a#tabB:hover{background-position: -187px 40px;}div.scroller{margin: 0;width: 100%; height: 240px;padding-bottom: 10px;overflow: hidden;}div.scroller div.section{width: 540px;height: 240px;padding-bottom: 10px;overflow: hidden;float: left;}div.scroller{clear: both;}div.scroller div.content {width: 10000px;}