#main-image-box {margin-left:254px;width:748px;height:233px;position:relative;}
#main-image-box #one {background-image:url("../images/showimg01.jpg");clip:rect(0px 248px 233px 0px);}
#main-image-box #two {background-image:url("../images/showimg02.jpg");clip:rect(0px 498px 233px 250px);}
#main-image-box #three {background-image:url("../images/showimg03.jpg");clip:rect(0px 748px 233px 500px);}
#main-image-box .clip {width:748px;height:233px;position:absolute;top:0;left:0;display:block;background-color:#fff;background-position:center top;background-repeat:no-repeat;z-index:1;}