today = new Date();
yyyy  = today.getYear();
mm    = today.getMonth() + 1;
dd    = today.getDate();
hh    = today.getHours();

if (yyyy < 2000) { yyyy += 1900; }

if (hh < 6) {
	dd -= 1;
	if (dd < 1) {
		mm -= 1;
		if (mm < 1) {
			yyyy -=  1;
			mm    = 12;
			dd    = 31;
		} else if (mm == 2) { 
			if (yyyy == Math.floor(yyyy/400) * 400) {
				dd = 29;
			} else if (yyyy == Math.floor(yyyy/100) * 100) {
				dd = 28;
			} else if (yyyy == Math.floor(yyyy/4) * 4) {
				dd = 29;
			} else {
				dd = 28;
			}
		} else if ((mm == 4) || (mm == 6) || (mm == 9) || (mm == 11)) {
			dd = 30;
		} else {
			dd = 31;
		}
	}
}

if (mm < 10)     { mm = "0" + mm; }
if (dd < 10)     { dd = "0" + dd; }

document.write(
	'<H3><A href="ryusei\/observe\/forecast\/' + yyyy + '\/' + mm +'\/index.html" target="_top">■流星予報 <SPAN class="s">' + yyyy + '年' + mm + '月<\/SPAN><\/A><\/H3>' +
	'<H5>◆今夜の流星予報<\/H5>' +
	'<DIV align="center"><IMG alt="Ryusei Yohou" src="ryusei\/observe\/forecast\/everyday\/time.gif" width="416" height="14"><BR>' +
	'<IMG alt="Ryusei Yohou" src="ryusei\/observe\/forecast\/everyday\/' + yyyy + mm + dd + '.gif" width="416" height="15"><BR>' +
	'<IMG alt="Ryusei Yohou" src="ryusei\/observe\/forecast\/everyday\/hanrei.gif" width="416" height="28"><BR><\/DIV>'
);