// JavaScript Document

// 自動でロールオーバーイメージを適応する
function smartRollover() {
	if(document.getElementsByTagName) {
		var images = document.getElementsByTagName("img");

		for(var i=0; i < images.length; i++) {
			if(images[i].getAttribute("src").match("_off."))
			{
				images[i].onmouseover = function() {
					this.setAttribute("src", this.getAttribute("src").replace("_off.", "_on."));
				}
				images[i].onmouseout = function() {
					this.setAttribute("src", this.getAttribute("src").replace("_on.", "_off."));
				}
			}
		}
	}
}

if(window.addEventListener) {
	window.addEventListener("load", smartRollover, false);
}
else if(window.attachEvent) {
	window.attachEvent("onload", smartRollover);
}


// 一定期間New/Upマークを表示する
function newUp(y, m, d, c) {
  delDay = 14; // 何日後に削除するか
  oldDay = new Date(y + "/" + m + "/" +d);
  newDay = new Date();
  d =(newDay - oldDay) / (1000 * 24 * 3600);
  if(d <= delDay) {
    document.write('<img src="http://www.iwatani-e-school.ac.jp/img/common/button_new.gif" class="articleNewIcon" alt="NEW" />');
  } else {
    document.write('<img src="http://www.iwatani-e-school.ac.jp/img/common/button_old.gif" class="articleNewIcon" alt=" " />');
  }
}