<!--//
if (document.images) {
   supportOn = new Image();
   supportOn.src = "image/btn_support_on.gif";
   aboutOn = new Image();
   aboutOn.src = "image/btn_uber_on.gif";
   productsOn = new Image();
   productsOn.src = "image/btn_produkte_on.gif";
   infosOn = new Image();
   infosOn.src = "image/btn_infos_on.gif";
   servicesOn = new Image();
   servicesOn.src = "image/btn_services_on.gif";
   partnersOn = new Image();
   partnersOn.src = "image/btn_partner_on.gif";
   newsOn = new Image();
   newsOn.src = "image/btn_news_on.gif";
   contactOn = new Image();
   contactOn.src = "image/btn_kontakt_on.gif";
   customersOn = new Image();
   customersOn.src = "image/btn_kunden_on.gif";

   supportOff = new Image();
   supportOff.src = "image/btn_support_off.gif";
   aboutOff = new Image();
   aboutOff.src = "image/btn_uber_off.gif";
   productsOff = new Image();
   productsOff.src = "image/btn_produkte_off.gif";
   infosOff = new Image();
   infosOff.src = "image/btn_infos_off.gif";
   servicesOff = new Image();
   servicesOff.src = "image/btn_services_off.gif";
   partnersOff = new Image();
   partnersOff.src = "image/btn_partner_off.gif";
   newsOff = new Image();
   newsOff.src = "image/btn_news_off.gif";
   contactOff = new Image();
   contactOff.src = "image/btn_kontakt_off.gif";
   customersOff = new Image();
   customersOff.src = "image/btn_kunden_off.gif";
   }

function buttonOn(imgName) {
   if (document.images) {
       document [imgName].src = eval(imgName + "On.src");
       }
   }
        
function buttonOff(imgName) {
   if (document.images) {
       document [imgName].src = eval(imgName + "Off.src");
       }
   }
//-->