image1 = new Image();
image1.src = "images/menu/home_over.jpg";

image2 = new Image();
image2.src = "images/menu/pep_over.jpg";

image3 = new Image();
image3.src = "images/menu/resultaten_over.jpg";

image4 = new Image();
image4.src = "images/menu/overons_over.jpg";