image1 = new Image();
image1.src = "http://www.janegmeyer.com/images/nav/dd-bk.gif";

image2 = new Image();
image2.src = "http://www.janegmeyer.com/images/nav/dd-bk-over.gif";

image3 = new Image();
image3.src = "http://www.janegmeyer.com/images/nav/dd-bk-long.gif";

image4 = new Image();
image4.src = "http://www.janegmeyer.com/images/nav/dd-bk-long-over.gif";