a.aktuell:hover, 
a.wir:hover,
a.bsp:hover,
a.wp:hover,
a.boden:hover,
a.invest:hover,
a.foerder:hover,
a.gastro:hover,
a.kaelte:hover,
a.kaeltewp:hover,
a.refer:hover,
a.service:hover,
a.jobs:hover,
a.links:hover,
a.shop:hover,
a.impress:hover,
a.home:hover,
a.grundl:hover,
a.begriff:hover,
a.wquell:hover,
a.brauchw:hover {
   background-position: -136px 0;
}

a.aktuell {
  display: block;
  width: 136px;
  height: 24px;
  background: url('../images/button/aktuell.png') no-repeat;
}

a.wir {
  display: block;
  width: 136px;
  height: 24px;
  background: url('../images/button/wiruberu.png') no-repeat;
}

a.bsp {
  display: block;
  width: 136px;
  height: 24px;
  background: url('../images/button/beispiel.png') no-repeat;
}

a.wp {
  display: block;
  width: 136px;
  height: 24px;
  background: url('../images/button/warmpump.png') no-repeat;
}

a.boden {
  display: block;
  width: 136px;
  height: 24px;
  background: url('../images/button/fussbodn.png') no-repeat;
}

a.invest {
  display: block;
  width: 136px;
  height: 39px;
  background: url('../images/button/invest.png') no-repeat;
}

a.foerder {
  display: block;
  width: 136px;
  height: 39px;
  background: url('../images/button/foerder.png') no-repeat;
}

a.gastro {
  display: block;
  width: 136px;
  height: 39px;
  background: url('../images/button/gastro.png') no-repeat;
}

a.kaelte{
  display: block;
  width: 136px;
  height: 39px;
  background: url('../images/button/kaeltproz.png') no-repeat;
}

a.kaeltewp{
  display: block;
  width: 136px;
  height: 39px;
  background: url('../images/button/kaeltewp.png') no-repeat;
}

a.refer{
  display: block;
  width: 136px;
  height: 24px;
  background: url('../images/button/refer.png') no-repeat;
}

a.service{
  display: block;
  width: 136px;
  height: 24px;
  background: url('../images/button/service.png') no-repeat;
}

a.jobs{
  display: block;
  width: 136px;
  height: 24px;
  background: url('../images/button/jobs.png') no-repeat;
}

a.links{
  display: block;
  width: 136px;
  height: 24px;
  background: url('../images/button/links.png') no-repeat;
}

a.shop{
  display: block;
  width: 136px;
  height: 24px;
  background: url('../images/button/shoprot.png') no-repeat;
}

a.impress{
  display: block;
  width: 136px;
  height: 24px;
  background: url('../images/button/impress.png') no-repeat;
}

a.home{
  display: block;
  width: 136px;
  height: 24px;
  background: url('../images/button/home.png') no-repeat;
}

a.grundl{
  display: inline;
  width: 136px;
  height: 24px;
  background: url('../images/button/grundlgn.png') no-repeat;
  float: left;
}

a.begriff{
  display: inline;
  width: 136px;
  height: 24px;
  background: url('../images/button/begriffe.png') no-repeat;
  float: left;
}

a.wquell{
  display: inline;
  width: 136px;
  height: 24px;
  background: url('../images/button/wquelle.png') no-repeat;
  float: left;
}

a.brauchw{
  display: inline;
  width: 136px;
  height: 24px;
  background: url('../images/button/brauchwp.png') no-repeat;
  float: left;
}