function getCookie (key, tmp1, tmp2, xx1, xx2, xx3)
{
    tmp1 = " " + document.cookie + ";";
    xx1 = xx2 = 0;
    len = tmp1.length;
    while (xx1 < len)
    {
        xx2 = tmp1.indexOf(";", xx1);
        tmp2 = tmp1.substring(xx1 + 1, xx2);
        xx3 = tmp2.indexOf("=");
        if (tmp2.substring(0, xx3) == key)
        {
            return(unescape(tmp2.substring(xx3 + 1, xx2 - xx1 - 1)));
        }
        xx1 = xx2 + 1;
    }
    return("");
}

function setCookie (key, val, tmp)
{
//  固定(Tue, 31-Dec-2030 23:59:59)→翌日に変更。
	var ToDay = new Date();
	var xDay = new Date(ToDay.getYear(), ToDay.getMonth(), ToDay.getDate() + 1);

    tmp = key + "=" + escape(val) + "; ";
//    tmp += "expires=Tue, 31-Dec-2030 23:59:59; ";
	tmp += "expires=" + xDay.toGMTString + "; ";

// 	alert(tmp);

    document.cookie = tmp;
}

function clearCookie (key)
{
    document.cookie = key + "=" + "xx; expires=Tue, 1-Jan-1980 00:00:00;";
}