image1 = new Image();
image1.src = "images/leaf.gif";
image2 = new Image();
image2.src = "images/folderOpen.gif";
image3 = new Image();
image3.src = "images/minus3.gif";
image4 = new Image();
image4.src = "images/line2.gif";
image5 = new Image();
image5.src = "images/line3.gif";