var loaded = false;
if (document.images) {
    img1off = new Image();img1off.src = "images/btn_home_off.jpg";
    img2off = new Image();img2off.src = "images/btn_manga_off.jpg";
    img3off = new Image();img3off.src = "images/btn_characters_off.jpg";
	img4off = new Image();img4off.src = "images/btn_timeline_off.jpg";
	img5off = new Image();img5off.src = "images/btn_encyclopedia_off.jpg";
	img6off = new Image();img6off.src = "images/btn_bbs_off.jpg";
	img7off = new Image();img7off.src = "images/btn_links_off.jpg";
}
function imageLoad() {
    if (document.images) {
    img1on = new Image();img1on.src = "images/btn_home_on.jpg";
    img2on = new Image();img2on.src = "images/btn_manga_on.jpg";
    img3on = new Image();img3on.src = "images/btn_characters_on.jpg";
	img4on = new Image();img4on.src = "images/btn_timeline_on.jpg";
	img5on = new Image();img5on.src = "images/btn_encyclopedia_on.jpg";
	img6on = new Image();img6on.src = "images/btn_bbs_on.jpg";
	img7on = new Image();img7on.src = "images/btn_links_on.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");
    }
}