.mainbox{ overflow: hidden; position: relative; float: left;}
.flashbox{overflow: hidden; position: relative;}
.imagebox{    text-align: center; position: relative; z-index: 999;}

.bitdiv{display: inline-block;width: 18px; height: 18px; margin: 0 0px 0px 0px;cursor: pointer;float: right;}
.defimg{ background-image: url(../images/02.png);}
.curimg{ background-image: url(../images/01.png);}