#div1, #div2, #div3, #div4, #div5, #div6, #div7, #div8, #div9
{
position:absolute;
top: 255px;
left: 5px;
visibility:hidden;
background-color: #FFFFFF;
width: 800px;
height: 500px;
z-index: top;
}

#div0
{
position:absolute;
top: 255px;
left: 5px;
visibility:visible;
background-color: #FFFFFF;
width: 800px;
height: 500px;
}