.visibleDiv, #topLeft, #topRight, #bottomLeft, #bottomRight
{
    position: fixed;
    width: 160px;
    border: solid 1px #e1e1e1;
    vertical-align: middle;
    background: white;
    text-align: center;
}

#topLeft
{
    top: 10px;
    left: 10px;
}

#topRight
{
    top: 200px;
    right: 170px;
}

#bottomLeft
{
    bottom: 10px;
    left: 10px;
}

#bottomRight
{
    bottom: 10px;
    right: 10px;
}