.view-kopfzeilen-slideshow .views-slideshow-pager-field-item{
    float: left;
    padding: 10px;
    background: url("images/Slideshow_punkt_inaktiv.jpg") top left no-repeat;
}

.view-kopfzeilen-slideshow .active .views-slideshow-pager-field-item{
    background: url("images/Slideshow_punkt_aktiv.jpg") top left no-repeat;
}