var link = new Array(
		"http://www.amabilis.jp/e/ads?aid=mf02-22&fmt=160x600_am",
		"http://www.amabilis.jp/e/ads?aid=mf02-22&fmt=160x600_am",
		"http://www.amabilis.jp/e/ads?aid=mf02-22&fmt=160x600_am",
		"http://www.amabilis.jp/e/ads?aid=mf02-22&fmt=160x600_am",
		"http://www.amabilis.jp/e/ads?aid=mf02-22&fmt=160x600_am",
		"http://www.amabilis.jp/e/ads?aid=mf02-22&fmt=160x600_am",
		"http://www.amabilis.jp/e/ads?aid=mf02-22&fmt=160x600_am",
		"http://www.amabilis.jp/e/ads?aid=mf02-22&fmt=160x600_am",
		"http://www.amabilis.jp/e/ads?aid=mf02-22&fmt=160x600_am",
		"http://www.amabilis.jp/e/ads?aid=mf02-22&fmt=160x600_am",

		"http://w1.rakutool.jp/rakuten.cgi?af=017a095a.cae16c0d&format=160x600&category=all",
		"http://w1.rakutool.jp/rakuten.cgi?af=017a095a.cae16c0d&format=160x600&category=all",
		"http://w1.rakutool.jp/rakuten.cgi?af=017a095a.cae16c0d&format=160x600&category=all",
		"http://w1.rakutool.jp/rakuten.cgi?af=017a095a.cae16c0d&format=160x600&category=all",
		"http://w1.rakutool.jp/rakuten.cgi?af=017a095a.cae16c0d&format=160x600&category=all",
		"http://w1.rakutool.jp/rakuten.cgi?af=017a095a.cae16c0d&format=160x600&category=all",

		"http://rcm-jp.amazon.co.jp/e/cm?t=mf02-22&p=14&o=9&l=bn1&browse=466280&mode=books-jp&f=ifr"
	);
	var n = Math.floor(Math.random() * link.length);


	function change() {
		document.write(
			'<iframe scrolling="no" frameborder=0 width=160 height=600 src="' +
			link[ n ] +
			'"></iframe>'
		  );
	}

	change();