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 == 'imgover') {
			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;*/
try{
	window.addEventListener("load",initRollovers,false);
}catch(e){
	window.attachEvent("onload",initRollovers);
}

function jumpToPageTop(e) {
	UAGENT = navigator.userAgent.toUpperCase();
	if (UAGENT.indexOf("MSIE") >=0) {
		pos = event.y;
	} else {
		pos = e.pageY;
	}
	pageScroll(pos);
}
function pageScroll(posi) {
	dist = posi / 6;
	nPos = parseInt(posi - dist);
	scrollTo(0,nPos);
	if (nPos > 0) {
		setTimeout("pageScroll(nPos)",10);
	}
}
// ポップアップウィンドウのソース
function openwin (url,name,w,h) {
w = window.open(url,name,"width="+w+",height="+h+",left=0,top=0,toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,favorites=no,resizable=no");
w.focus();
}