//Create array of nav bar "on" images

if (document.images) {
        nav1 = new Image();
        nav1.src = "images/1a.jpg";
        nav3 = new Image();
        nav3.src = "images/3a.jpg";
        nav5 = new Image();
        nav5.src = "images/5a.jpg";
        nav7 = new Image();
        nav7.src = "images/7a.jpg";
        nav9 = new Image();
        nav9.src = "images/9a.jpg";
                     }

//Create array of nav bar "off" images
if (document.images) {
        nav1off = new Image();
        nav1off.src = "images/1.jpg";
        nav3off = new Image();
        nav3off.src = "images/3.jpg";
        nav5off = new Image();
        nav5off.src = "images/5.jpg";
        nav7off = new Image();
        nav7off.src = "images/7.jpg";
        nav9off = new Image();
        nav9off.src = "images/9.jpg";
                     }

//function to activate images

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

//functions to deactivate images

function imgOff(imgName) {
        if (document.images) {
                document[imgName].src = "../images/space.gif";
        }
}

function navOff(navName) {
        if (document.images) {
                document[navName].src = eval(navName + "off.src");
        }
}