a.locking-status {
    display: block;
    width: 16px;
    height: 16px;
}

a.locking-status.locking-locked {
    background: transparent url(../img/lock.png) no-repeat 0 0;
}

a.locking-status.locking-edit {
    background: transparent url(../img/page_edit.png) no-repeat 0 0;
    cursor: default;
}