if (document.images) {
image4cornerson = new Image();
image4cornerson.src = "4corners/t-4corner2.jpg";
imagegcon = new Image();
imagegcon.src = "grandcanyon/t-gc3.jpg";
imagepetforon = new Image();
imagepetforon.src = "petrifiedforrest/t-petfor2.jpg";
imagesaltriveron = new Image();
imagesaltriveron.src = "saltriver/t-saltriver04.jpg";
imageoff = new Image();
imageoff.src = "../../grafik/gennemsigtig2x2.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");
}}}