.nivo-controlNav a
{
    display: inline-block;
    cursor: pointer;
    width: 20px;
    height: 20px;
    background: url(images/b.png) no-repeat;
    text-indent: -9999px;
    margin-right: 0;
}
.SliderControl
{
    height:50px;
}
.nivo-controlNav
{
    bottom:10px;
}