/* --------------------------------------------------
Onload
-------------------------------------------------- */
function addEvent(elm,listener,fn){
	try{
		elm.addEventListener(listener,fn,false);
	}catch(e){
		elm.attachEvent("on"+listener,fn);
	}
}


/*--------------------

navi01IMG = new Image();
navi01IMG.src = "/common/images/head_bg01.jpg";
navi02IMG = new Image();
navi02IMG.src = "/common/images/head_bg02.jpg";


function headerRt(){
var url=[];
url[0] = 'head_bg01.jpg';
url[1] = 'head_bg02.jpg';
//url[2] = 'head_bg03.jpg';
var n = Math.floor(Math.random() * url.length);
var elm = document.getElementById('header');
elm.style.backgroundImage = 'url(/common/images/' + url[n] + ')';
}
addEvent(window,"load",headerRt);


-------------------*/

/* --------------------------------------------------
Rollover
-------------------------------------------------- */
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 == 'over') {
			var src = aImages[i].getAttribute('src');
			var ftype = src.substring(src.lastIndexOf('.'), src.length);
			var hsrc = src.replace(ftype, '_over'+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('_over'+ftype, ftype);
				this.setAttribute('src', sTempSrc);
			}
		}
	}
}

addEvent(window,"load",initRollovers);