.seriesstory{width:960px;height:auto;margin:0px auto;position:relative;}
.seriesstory a.show{position:absolute;width:37px;height:37px;cursor:pointer;}
.seriesstory a.show img{width:37px;height:37px;}
.seriesstory .rtri{position: absolute;top: 10px;width: 9px;height: 18px;background: url('../images/tri-right.png') 0 0 no-repeat;
    right: -9px;}
.seriesstory .ltri{position: absolute;top: 10px;width: 9px;height: 18px;background: url('../images/tri-left.png') 0 0 no-repeat;
    left: -9px;}