if(document.images)
{
wiroff = new Image();
wiroff.src = "images/wir.jpg";
wiron = new Image();
wiron.src = "images/wir_selected.jpg";

sanitaeroff = new Image();
sanitaeroff.src = "images/sanitaer.jpg";
sanitaeron = new Image();
sanitaeron.src = "images/sanitaer_selected.jpg";

heizungoff = new Image();
heizungoff.src = "images/heizung.jpg";
heizungon = new Image();
heizungon.src = "images/heizung_selected.jpg";

energieoff = new Image();
energieoff.src = "images/energie.jpg";
energieon = new Image();
energieon.src = "images/energie_selected.jpg";

gewaesseroff = new Image();
gewaesseroff.src = "images/gewaesser.jpg";
gewaesseron = new Image();
gewaesseron.src = "images/gewaesser_selected.jpg";

kontaktoff = new Image();
kontaktoff.src = "images/kontakt.jpg";
kontakton = new Image();
kontakton.src = "images/kontakt_selected.jpg";
}


function imgChange(imgName,imgSrc)
{
   strStat = imgName;
   strStat = strStat.toUpperCase();

   if(document.images)
   {
      imgNeu = eval(imgSrc + '.src');
      document[imgName].src = imgNeu;
      if(imgSrc.indexOf("off") == -1)
        {self.status = strStat;}
      else
        {self.status = "";}
    }
}