var navifolder = "../images.two.state/"; 
    
    var bookspagebuttonslo = new Array(bookspageimages.length);
    var bookspagebuttonshi = new Array(bookspageimages.length);

	for (i = 0;  i < bookspageimages.length;  i++) {
		bookspagebuttonslo[bookspageimages[i]] = new Image();
		bookspagebuttonslo[bookspageimages[i]].src = navifolder + bookspageimages[i] + "lo.png";
		bookspagebuttonshi[bookspageimages[i]] = new Image();
		bookspagebuttonshi[bookspageimages[i]].src = navifolder + bookspageimages[i] + "hi.png";
	}
    
    function bookspagehi(name) {
        document.images[name].src = bookspagebuttonshi[name].src;
        return true;
    }
    function bookspagelo(name) {
        document.images[name].src = bookspagebuttonslo[name].src;
        return true;
    }