#detaildisplay {
width:800px;
height: 440px;
border:0px solid #000;
overflow:hidden;

}
#detaildisplay div {
position:absolute;
z-index:0;
width:800px;
height: 440px;
overflow:hidden;
}
#detaildisplay div.previndex {
z-index: 1;
}
#detaildisplay div.curindex {
z-index: 2;
}