a.gruen  { color: #015d38; text-decoration: underline }

  a.gruen :link { color: #015d38; text-decoration: underline }
  a.gruen:visited {color: #015d38; text-decoration: underline }
  a.gruen:hover {color: #FFFFFF; text-decoration: underline overline }
  a.gruen:active {color: #015d38; text-decoration: none }