if(document.images)
{
aoff = new Image();
aoff.src="img/speisekarte.png";
aon = new Image();
aon.src="img/speisekarte_s.png";

boff = new Image();
boff.src="img/oeffnungszeiten.png";
bon = new Image();
bon.src="img/oeffnungszeiten_s.png";

coff = new Image();
coff.src="img/kontakt.png";
con = new Image();
con.src="img/kontakt_s.png";


}

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 = "";}
    }
}