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

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

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

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

image5 = new Image();
image5.src = "images/contact_on.jpg";