// JavaScript Document

var annNum= 0;
var annNew= 0;

function chkAnn() {

	var e1 = document.getElementById('Announce');
	var e2 = document.getElementById('AnnNew');

	if (annNum == 0) {
		e1.style.display = "none";	
	} else {
		e1.style.display = "block";	
/*
		if (annNew > 0)
			e2.innerHTML = ' <img src="/images/new001.gif">';
*/
	}
}

function announce(day, subj, url, exd) {

	if (day == "end") {
		chkAnn();
		return;
	}

	if (exd == 0) exd = 30;			// 表示する期間(日)
	var newDate = 10;				// Newを表示する期間

	var d1 = new Date();
	var d2 = new Date(day);
	
	var today = Math.floor(d1.getTime() / (1000*60*60*24));
	var mdate = Math.floor(d2.getTime() / (1000*60*60*24));

	if (today-mdate > exd) return;
	if (d1 < d2) return;

	if(url=="") { url="javascript:void(0)" }
	var s = '<li>' + 
		'<a href="' + url + '">' + subj + 
		'（' + day + '）<\/a>';
	if ((today-mdate) <= newDate) {
		s += ' <img src="/images/new001.gif">';
		annNew++;
	}
	document.write(s + '</li>');
	annNum++;

}