if (document.images) {
  image1on = new Image();
  image1on.src = "pic/navi/qualitaetssicherung_1.gif";
  image2on = new Image();
  image2on.src = "pic/navi/montage_1.gif";
  image3on = new Image();
  image3on.src = "pic/navi/werk_kupfer_1.gif";
  image4on = new Image();
  image4on.src = "pic/navi/handelspartner_1.gif";
  image5on = new Image();
  image5on.src = "pic/navi/heizungsrohre_1.gif";
  image6on = new Image();
  image6on.src = "pic/navi/zubehoer_1.gif";
  image7on = new Image();
  image7on.src = "pic/navi/varianten_1.gif";
  image8on = new Image();
  image8on.src = "pic/navi/herstellerdetails_1.gif";
  image9on = new Image();
  image9on.src = "pic/navi/impressum_1.gif";
      
  image1off = new Image();
  image1off.src = "pic/navi/qualitaetssicherung.gif";
  image2off = new Image();
  image2off.src = "pic/navi/montage.gif";
  image3off = new Image();
  image3off.src = "pic/navi/werk_kupfer.gif";
  image4off = new Image();
  image4off.src = "pic/navi/handelspartner.gif";
  image5off = new Image();
  image5off.src = "pic/navi/heizungsrohre.gif";
  image6off = new Image();
  image6off.src = "pic/navi/zubehoer.gif";
  image7off = new Image();
  image7off.src = "pic/navi/varianten.gif";
  image8off = new Image();
  image8off.src = "pic/navi/herstellerdetails.gif";
  image9off = new Image();
  image9off.src = "pic/navi/impressum.gif";
}


function changeImages() {
	
if (document.images) {
 	
   for (var i=0; i<changeImages.arguments.length; i+=2) {
      document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1] + ".src");
    }
  }
  
}