img1hi = new Image(); img1hi.src = "images/nav1-s.gif";
	img1lo = new Image(); img1lo.src = "images/nav1.gif";
	
    img2hi = new Image(); img2hi.src = "images/nav2-s.gif";
    img2lo = new Image(); img2lo.src = "images/nav2.gif";
    
    img3hi = new Image(); img3hi.src = "images/nav3-s.gif";
    img3lo = new Image(); img3lo.src = "images/nav3.gif";
    
    img4hi = new Image(); img4hi.src = "images/nav4-s.gif";
    img4lo = new Image(); img4lo.src = "images/nav4.gif";
    
    img5hi = new Image(); img5hi.src = "images/nav5-s.gif";
    img5lo = new Image(); img5lo.src = "images/nav5.gif";
    
    img6hi = new Image(); img6hi.src = "images/nav6-s.gif";
    img6lo = new Image(); img6lo.src = "images/nav6.gif";
    
    img7hi = new Image(); img7hi.src = "images/nav7-s.gif";
    img7lo = new Image(); img7lo.src = "images/nav7.gif";
    
    img8hi = new Image(); img8hi.src = "images/nav8-s.gif";
    img8lo = new Image(); img8lo.src = "images/nav8.gif";
    
    img9hi = new Image(); img9hi.src = "images/nav9-s.gif";
    img9lo = new Image(); img9lo.src = "images/nav9.gif";
    
function doButtonHi(imgName) {
	if (document.images) {
            document[imgName].src = eval(imgName + "hi.src");  }
	}
	
function doButtonLo(imgName) {
	if (document.images) {
            document[imgName].src = eval(imgName + "lo.src");  }
	}