var navifolder = "../images.three.state/";
    if (toplevel == 1) {    navifolder = "images.three.state/";    } 
    
    var buttonslo = new Array(personalimages.length);
    var buttonshi = new Array(personalimages.length);
    var buttonson = new Array(personalimages.length);
    
    for (i = 0;  i < personalimages.length;  i++) {
        buttonslo[personalimages[i]] = new Image();
        buttonslo[personalimages[i]].src = navifolder + personalimages[i] + "lo.png";
        buttonshi[personalimages[i]] = new Image();
        buttonshi[personalimages[i]].src = navifolder + personalimages[i] + "hi.png";
        buttonson[personalimages[i]] = new Image();
        buttonson[personalimages[i]].src = navifolder + personalimages[i] + "on.png";
    }
    
    function personalhi(name) {
        document.images[name].src = buttonshi[name].src;
        return true;
    }
    function personallo(name) {
        document.images[name].src = buttonslo[name].src;
        return true;
    }