// JavaScript Document
// http://www.mdn.co.jp/webcre/Tips/Vol36/
// web creators 12月号
// 仕掛けで見せる! WEBデザインTIPS ＆ TRICS 
// 1. フォントサイズをワンクリックで変更する 
var Default = 2;
var tags    = 
//new Array('div','td','tr');
new Array('p');
var sizing  = new Array('xx-small','x-small','small','medium','large','x-large','xx-large');
//var sizing  = new Array('80%','85%','90%','medium','1.6em','1.7em','1.8em');
	function FontChange(target,tarF) {
	  if (!document.getElementById) return
	  var dore = document,tarS = null,fontSize = Default,value,su,cTags;fontSize += tarF;
	  if (fontSize < 0) fontSize = 0;
	  if (fontSize > 6) fontSize = 6;
	  Default = fontSize;
	  if (!(tarS = dore.getElementById(target))) tarS = dore.getElementsByTagName(target)[0];
	  tarS.style.fontSize = sizing[fontSize];
	  for (value = 0 ; value < tags.length ; value++) {
		cTags = tarS.getElementsByTagName(tags[value]);
		for (su = 0 ; su < cTags.length ; su++) cTags[su].style.fontSize = sizing[fontSize];
	  }
	}



/* Rollover Menu */
/* メニュー部分のロールオーバー */

function initRollovers() {
	if (!document.getElementById) return
	
	var aPreLoad = new Array();
	var sTempSrc;
	var aImages = document.getElementsByTagName('img');

	for (var i = 0; i < aImages.length; i++) {		
		if (aImages[i].className == 'btn') {
			var src = aImages[i].getAttribute('src');
			var ftype = src.substring(src.lastIndexOf('.'), src.length);
			var hsrc = src.replace(ftype, '_o'+ftype);

			aImages[i].setAttribute('hsrc', hsrc);
			
			aPreLoad[i] = new Image();
			aPreLoad[i].src = hsrc;
			
			aImages[i].onmouseover = function() {
				sTempSrc = this.getAttribute('src');
				this.setAttribute('src', this.getAttribute('hsrc'));
			}	
			
			aImages[i].onmouseout = function() {
				if (!sTempSrc) sTempSrc = this.getAttribute('src').replace('_o'+ftype, ftype);
				this.setAttribute('src', sTempSrc);
			}
		}
	}
}
window.onload = initRollovers;


/*　別窓開き
function subWin01(){
window.open("light_box/index.html","banner","resizable=yes,menubar=no,directories=no,status=yes,location=no,scrollbars=no,toolbar=no,width=610,height=550");
}*/


/* ツリーメニュー（クリックで下にメニューが現れて　クリックで消える） */

function treeMenu(Id){
menu = document.getElementById(Id).style;
if(menu.display == "none")
menu.display="block";
else
menu.display="none"
}





/*  cprt.js コピーライトの部分の自動年号変動  */
function cprt(){
    myD = new Date();
    myYear = myD.getYear();
    myYears = (myYear < 2000) ? myYear+1900 : myYear;//古いブラウザ用
    document.write("Copyright &copy; ",myYears," College of Industrial Technology. All right Reserved.");
}


/*  Newマークアップ  */
function New_mark(){
// passage time
var pass = 48;
 
// display content
var content = 'New!!';
 
var currentDate = new Date(); 
var spans = document.getElementsByTagName('span');
	for (i = 0; i < spans.length; i++) {
		if(spans[i].getAttribute('class') == 'new' ||
		   spans[i].getAttribute('className') == 'new') {
			time = spans[i].childNodes[0].nodeValue.split(":");
			var entryDate = new Date(time[0], time[1]-1, time[2], time[3], time[4], time[5]); 
			var now = (entryDate.getTime() - currentDate.getTime())/(60*60*1000); 
			now = Math.ceil(now);
			if(-now <= pass){
				spans[i].innerHTML = content;
				spans[i].style.display = 'inline';
			}
		}
	}
}




/*  TOPページの画像切り替え  */