if (document.images)

{

    nav1Off = new Image;

    nav1Off.src = "images-nav/nav1a.gif";

    nav1Hi = new Image;

    nav1Hi.src = "images-nav/nav1b.gif";



    nav2Off = new Image;

    nav2Off.src = "images-nav/nav2a.gif";

    nav2Hi = new Image;

    nav2Hi.src = "images-nav/nav2b.gif";



    nav2sub1Off = new Image;

    nav2sub1Off.src = "images-nav/nav2-1a.gif";

    nav2sub1Hi = new Image;

    nav2sub1Hi.src = "images-nav/nav2-1b.gif";



    nav2sub2Off = new Image;

    nav2sub2Off.src = "images-nav/nav2-2a.gif";

    nav2sub2Hi = new Image;

    nav2sub2Hi.src = "images-nav/nav2-2b.gif";

    

    nav2sub3Off = new Image;

    nav2sub3Off.src = "images-nav/nav2-3a.gif";

    nav2sub3Hi = new Image;

    nav2sub3Hi.src = "images-nav/nav2-3b.gif";

    

    nav3Off = new Image;

    nav3Off.src = "images-nav/nav3a.gif";

    nav3Hi = new Image;

    nav3Hi.src = "images-nav/nav3b.gif";



    nav4Off = new Image;

    nav4Off.src = "images-nav/nav4a.gif";

    nav4Hi = new Image;

    nav4Hi.src = "images-nav/nav4b.gif";



	nav5Off = new Image;

    nav5Off.src = "images-nav/nav5a.gif";

    nav5Hi = new Image;

    nav5Hi.src = "images-nav/nav5b.gif";



	nav5sub1Off = new Image;

    nav5sub1Off.src = "images-nav/nav5-1a.gif";

    nav5sub1Hi = new Image;

    nav5sub1Hi.src = "images-nav/nav5-1b.gif";



	nav6Off = new Image;

    nav6Off.src = "images-nav/nav6a.gif";

    nav6Hi = new Image;

    nav6Hi.src = "images-nav/nav6b.gif";



	nav6sub1Off = new Image;

    nav6sub1Off.src = "images-nav/nav6-1a.gif";

    nav6sub1Hi = new Image;

    nav6sub1Hi.src = "images-nav/nav6-1b.gif";



	nav7Off = new Image;

    nav7Off.src = "images-nav/nav7a.gif";

    nav7Hi = new Image;

    nav7Hi.src = "images-nav/nav7b.gif";



	utnavoverOff = new Image;

    utnavoverOff.src = "images-nav/1pix.gif";

    utnavover1Hi = new Image;

    utnavover1Hi.src = "images-nav/utnav1-over.gif";

    utnavover2Hi = new Image;

    utnavover2Hi.src = "images-nav/utnav2-over.gif";

    utnavover3Hi = new Image;

    utnavover3Hi.src = "images-nav/utnav3-over.gif";

    

    utnav1Hi = new Image;

    utnav1Hi.src = "images-nav/utnav1b-search.gif";

	utnav1Off = new Image;

    utnav1Off.src = "images-nav/utnav1-search.gif";

    utnav2Hi = new Image;

    utnav2Hi.src = "images-nav/utnav2b-response.gif";

	utnav2Off = new Image;

    utnav2Off.src = "images-nav/utnav2-response.gif";

    utnav3Hi = new Image;

    utnav3Hi.src = "images-nav/utnav3b-home.gif";

	utnav3Off = new Image;

    utnav3Off.src = "images-nav/utnav3-home.gif";

    

}  

    

function chgImg(imgField,newImg) {

    if (document.images) {

  		document [imgField].src= eval(newImg + ".src")

    }

}