var win = null;
function openSample(url) {
	if (win) {
		win.close();
	}

	var width = 522;
	var height = 600;

	// 画面の中央に表示するため、XY座標を算出する

	var top = (screen.height - parseInt(height, 10)) / 2;
	var left = (screen.width - parseInt(width, 10)) / 2;

	win = window.open(url, "samplewin","menubar=no,toolbar=no,scrollbars=yes,resizable=no,status=no,screenX=" + left + ",screenY=" + top + ",left=" + left + ",top=" + top + ",width=" + width + ",height=" + height);
	win.focus();
}