.footable > thead > tr > th > span.footable-sort-indicator {
    width: 16px;
    height: 16px;
    display: block;
    float: right;
    background: url('img/sorting_sprite.png') no-repeat top left;
}

.footable > thead > tr > th.footable-sortable:hover {
    cursor: pointer;
}

.footable > thead > tr > th.footable-sortable > span {

}

.footable > thead > tr > th.footable-sorted > span.footable-sort-indicator {
    background-position: 0 -16px;
}

.footable > thead > tr > th.footable-sorted-desc > span.footable-sort-indicator {
    background-position: 0 -32px;
}