.olControlShowLabels
{
    width:100%;
}
.olControlShowLabels div
{
    display: block;
    width: 28px;
    height: 28px;
    position: relative;
    left: 16px;
    top: 370px;
}
.LabelButtonClassItemInactive
{
background-image: url('../images/icons/show-labels-inactive.png');
}

.LabelButtonClassItemActive
{
background-image: url('../images/icons/show-labels-active.png');