if (document.images) {

ideeon = new Image(); // Active images
ideeon.src = "images/navi_idee1.gif";

ideeoff = new Image(); // Inactive images
ideeoff.src = "images/navi_idee.gif";

public_entranceon = new Image(); // Active images
public_entranceon.src = "images/navi_okt2007_1.gif";

public_entranceoff = new Image(); // Inactive images
public_entranceoff.src = "images/navi_okt2007.gif";

partneron = new Image(); // Active images
partneron.src = "images/navi_partner1.gif";

partneroff = new Image(); // Inactive images
partneroff.src = "images/navi_partner.gif";

oranienburgeron = new Image(); // Active images
oranienburgeron.src = "images/navi_oranienburger1.gif";

oranienburgeroff = new Image(); // Inactive images
oranienburgeroff.src = "images/navi_oranienburger.gif";

impressumon = new Image(); // Active images
impressumon.src = "images/navi_impressum1.gif";

impressumoff = new Image(); // Inactive images
impressumoff.src = "images/navi_impressum.gif";

public_entrance_referon = new Image(); // Active images
public_entrance_referon.src = "images/navi_public-entrance_refer1.gif";

public_entrance_referoff = new Image(); // Inactive images
public_entrance_referoff.src = "images/navi_public-entrance_refer.gif";

iballson = new Image(); // Active images
iballson.src = "images/navi_okt2006_1.gif";

iballsoff = new Image(); // Inactive images
iballsoff.src = "images/navi_okt2006.gif";

fotoson = new Image(); // Active images
fotoson.src = "images/navi_fotos1.gif";

fotosoff = new Image(); // Inactive images
fotosoff.src = "images/navi_fotos.gif";
}

function imgOn(imgName) {

if (document.images) {
document[imgName].src = eval(imgName + "on.src");
}
}

function imgOff(imgName) {
if (document.images) {
document[imgName].src = eval(imgName + "off.src");
}
}