var navifolder = "../images.two.state/"; 
    if (toplevel == 1) {    navifolder = "images.two.state/";    }
    
    var buttonslo = new Array(frontpageimages.length);
    var buttonshi = new Array(frontpageimages.length);
    
    for (i = 0;  i < frontpageimages.length;  i++) {
        buttonslo[frontpageimages[i]] = new Image();
        buttonslo[frontpageimages[i]].src = navifolder + frontpageimages[i] + "lo.png";
        buttonshi[frontpageimages[i]] = new Image();
        buttonshi[frontpageimages[i]].src = navifolder + frontpageimages[i] + "hi.png";
    }
    
    function frontpagehi(name) {
        document.images[name].src = buttonshi[name].src;
        return true;
    }
    function frontpagelo(name) {
        document.images[name].src = buttonslo[name].src;
        return true;
    }