.relative {position: relative;width: 100%;}
#home_banner {margin: 0 auto;}
.maxwidth {width: 620px;margin: 0 auto;}
#big_img {height: 485px;background: no-repeat center}
#small_img {display:none;height: 114px;padding-top: 13px;position: absolute;top: -127px;width: 100%;background:url(../images/bnbg.png) no-repeat center 0;}
#small_pre, #small_next, #small_imgs {height: 104px;float: left;}
#small_pre, #small_next {width: 22px;display: block;}
#small_pre {margin-right: 17px;background: url(../images/leftright.png) no-repeat 0 center;}
#small_next {margin-left: 17px;background: url(../images/leftright.png) no-repeat -44px center;}
#small_pre:hover {background-position: -22px center;}
#small_next:hover {background-position: -66px center;}
#small_imgs {width:540px;overflow: hidden;}
#small_imgs .item {float: left;padding: 0 16px;}
#small_imgs .item .img {cursor: pointer;width: 144px;height: 92px;padding: 3px;padding-top: 10px;background: url(../images/banner_bg.png) no-repeat center bottom;}
#small_imgs .item .img img {width: 144px;height: 90px;}
#small_imgs .item .active {background: url(../images/banner_bg_a.png) no-repeat center bottom;}