function getCookie(key) {
	var tmp  = document.cookie + ";";
	var tmp1 =   tmp.indexOf(key, 0);

	if (tmp1 != -1) {
		      tmp = tmp.substring(tmp1, tmp.length);
		var start = tmp.indexOf("=", 0) + 1;
		var   end = tmp.indexOf(";", start);
		return(unescape(tmp.substring(start, end)));
	}
	return("");
}

function livings() {
	var nontan = document.getElementById("fid").value;
	if (nontan >= 1 && nontan <= 300) {} else {nontan = 0;}
	var xDay = new Date;
	xDay.setDate(xDay.getDate() + 30);
	xDay = xDay.toGMTString();
	var viva = "zelda=" + nontan + ";";
	document.cookie = viva + "expires=" + xDay + "; path=/;";
	window.alert("時間の設定が完了しました。");
	document.getElementById("fid").value = nontan;
}