img1 = new Image();
img1.src = "images/layout/nav/home1.gif";

img2 = new Image();
img2.src = "images/layout/nav/iht1.gif";

img3 = new Image();
img3.src = "images/layout/nav/treatment1.gif";

img4 = new Image();
img4.src = "images/layout/nav/about1.gif";

img5 = new Image();
img5.src = "images/layout/nav/contact1.gif";

img5 = new Image();
img5.src = "images/layout/nav/home1w.gif";

img6 = new Image();
img6.src = "images/layout/nav/iht1w.gif";

img7 = new Image();
img7.src = "images/layout/nav/treatment1w.gif";