image1 = new Image(); image1.src = "/img/darkblue/author_on.jpg";
image2 = new Image(); image2.src = "/img/darkblue/book_on.jpg";
image3 = new Image(); image3.src = "/img/darkblue/characters_on.jpg";
image4 = new Image(); image4.src = "/img/darkblue/excerpt_on.jpg";