image1 = new Image();
image1.src = "img/nav01a.gif";
image2 = new Image();
image2.src = "img/nav02a.gif";
image3 = new Image();
image3.src = "img/nav03a.gif";
image4 = new Image();
image4.src = "img/nav04a.gif";
image5 = new Image();
image5.src = "img/nav05a.gif";
image6 = new Image();
image6.src = "img/nav06a.gif";
image7 = new Image();
image7.src = "img/nav07a.gif";