i01 = new Image();
i01.src = "images/buttons/home.gif";
i01h = new Image();
i01h.src = "images/buttons/home_over.gif";

i02 = new Image();
i02.src = "images/buttons/haustechnik.gif";
i02h = new Image();
i02h.src = "images/buttons/haustechnik_over.gif";

i03 = new Image();
i03.src = "images/buttons/service.gif";
i03h = new Image();
i03h.src = "images/buttons/service_over.gif";

i04 = new Image();
i04.src = "images/buttons/kontakt.gif";
i04h = new Image();
i04h.src = "images/buttons/kontakt_over.gif";

function hiLite(imgID,imgObjName) {
document.images[imgID].src = eval(imgObjName + ".src")
}