<SCRIPT LANGUAGE="JavaScript">

image1 = new Image();
image1.src = "images/nav1_on.gif";

image2 = new Image();
image2.src = "images/nav2_on.gif";

image3 = new Image();
image3.src = "images/nav3_on.gif";

image4 = new Image();
image4.src = "images/nav4_on.gif";

image5 = new Image();
image5.src = "images/nav5_on.gif";

image6 = new Image();
image6.src = "images/nav6_on.gif";

image7 = new Image();
image7.src = "images/nav7_on.gif";

</script>