#hauptnavigation_zeile2 ul li a {
  background-image: url(../images/hauptnav_pfeil_schwarz.gif);
  color: #000;
  background-position: 10px 9px;
  padding-top: 6px;
  height: 30px;
  border-right: 2px solid #fff;
}
#hauptnavigation_zeile2 ul li a:hover, #hauptnavigation_zeile2 ul li a.aktiv {
  background-color: #000;
  background-image: url(../images/hauptnav_pfeil_weiss.gif);
  background-position: 10px 9px;
  color: #fff;
}