if (document.images) {
                var HomeOff = new Image(31, 90);
                HomeOff.src = "graphics/UrsaHome.jpg";
                var HomeOn = new Image(31, 90);
                HomeOn.src = "graphics/UrsaHome2.jpg";

                var SiteOff = new Image(49, 90);
                SiteOff.src = "graphics/UrsaSite.jpg";
                var SiteOn = new Image(49, 90);
                SiteOn.src = "graphics/UrsaSite2.jpg";

               var ProgOff = new Image(48, 90);
                ProgOff.src = "graphics/UrsaProg.jpg";
                var ProgOn = new Image(48, 90);
                ProgOn.src = "graphics/UrsaProg2.jpg";

                var SalesOff = new Image(50, 50);
                SalesOff.src = "graphics/UrsaSales.jpg";
                var SalesOn = new Image(50, 50);
                SalesOn.src = "graphics/UrsaSales2.jpg";

                var NewsOff = new Image(43, 50);
                NewsOff.src = "graphics/UrsaNews.jpg";
                var NewsOn = new Image(43, 50);
                NewsOn.src = "graphics/UrsaNews2.jpg";

                var ContactOff = new Image(50, 40);
                ContactOff.src = "graphics/UrsaContact.jpg";
                var ContactOn = new Image(50, 40);
                ContactOn.src = "graphics/UrsaContact2.jpg";

               var StudsOff = new Image(43, 40);
                StudsOff.src = "graphics/Ursastuds.jpg";
                var StudsOn = new Image(43, 40);
                StudsOn.src = "graphics/Ursastuds2.jpg";

                var iconOff = new Image(30, 30);
                iconOff.src = "graphics/MMicon2.gif";
                var iconOn = new Image(30, 30);
                iconOn.src = "graphics/MMicon4.jpg";
        }

        function turnOn (imgName) {
                if (document.images)
                        document [imgName].src = eval (imgName + "On.src");
        }

        function turnOff (imgName) {
                if (document.images)
                        document [imgName].src = eval (imgName + "Off.src");
        }