function demo01() {
	window.open("http://www.ludvico.com/goods/saiyu.html","saiyu",
	"toolbar=no,location=no,directries=no,status=no,menubar=no,scrollbars=no,resizable=no,width=720,height=480");
}

function demo02() {
	window.open("http://www.ludvico.com/goods/yoshitsune.html","yoshitsune",
	"toolbar=no,location=no,directries=no,status=no,menubar=no,scrollbars=no,resizable=no,width=720,height=480");
}

function demo03() {
	window.open("http://www.ludvico.com/goods/shikio.html","shikio",
	"toolbar=no,location=no,directries=no,status=no,menubar=no,scrollbars=no,resizable=no,width=720,height=480");
}

function demo04() {
	window.open("http://www.ludvico.com/goods/alice.html","alice",
	"toolbar=no,location=no,directries=no,status=no,menubar=no,scrollbars=no,resizable=no,width=720,height=480");
}

function demo05() {
	window.open("http://www.ludvico.com/goods/romeo.html","romeo",
	"toolbar=no,location=no,directries=no,status=no,menubar=no,scrollbars=no,resizable=no,width=640,height=480");
}

function lud_memo() {
window.open("http://spinning.sakura.ne.jp/ludvico/lud_memo.html","lud_memo",
"toolbar=no,location=no,directries=no,status=no,menubar=no,scrollbars=no,resizable=no,width=400,height=400");
}

function backToTop() {
	var x1 = x2 = x3 = 0;
	var y1 = y2 = y3 = 0;
	if (document.documentElement) {
		x1 = document.documentElement.scrollLeft || 0;
		y1 = document.documentElement.scrollTop || 0;
	}
	if (document.body) {
		x2 = document.body.scrollLeft || 0;
		y2 = document.body.scrollTop || 0;
	}
	x3 = window.scrollX || 0;
	y3 = window.scrollY || 0;
	var x = Math.max(x1, Math.max(x2, x3));
	var y = Math.max(y1, Math.max(y2, y3));
	window.scrollTo(Math.floor(x / 1.4), Math.floor(y / 1.4));
	if (x > 0 || y > 0) {
		window.setTimeout("backToTop()", 10);
	}
}