var loaded = false;

if (document.images) {
    img1off = new Image();img1off.src = "pics/bibliog.jpg";
    img2off = new Image();img2off.src = "pics/biography.jpg";
	img3off = new Image();img3off.src = "pics/gallery.jpg";
	img4off = new Image();img4off.src = "pics/home.jpg";
	img5off = new Image();img5off.src = "pics/links.jpg";
	img6off = new Image();img6off.src = "pics/news.jpg";
}


function imageLoad() {
    if (document.images) {
        img1on = new Image();img1on.src = "pics/bibliogo.jpg";
        img2on = new Image();img2on.src = "pics/biographyo.jpg";
        img3on = new Image();img3on.src = "pics/galleryo.jpg";
        img4on = new Image();img4on.src = "pics/homeo.jpg";
        img5on = new Image();img5on.src = "pics/linkso.jpg";
		img6on = new Image();img6on.src = "pics/newso.jpg";
        return (loaded = true);
    }
}

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

function rollIn(imgName) {
    if (document.images && (loaded == true)) {
        document[imgName].src = eval(imgName+"on.src");
    }
}