(new Image()).src = "/img/template/navi_about2.gif";
(new Image()).src = "/img/template/navi_member2.gif";
(new Image()).src = "/img/template/navi_magazine2.gif ";
(new Image()).src = "/img/template/navi_otoiawase2.gif";

(new Image()).src = "/img/template/navi_about3.gif";
(new Image()).src = "/img/template/navi_member3.gif";
(new Image()).src = "/img/template/navi_magazine3.gif";
(new Image()).src = "/img/template/navi_otoiawase3.gif";

(new Image()).src = "/img/template/navi2_event_f2.gif";
(new Image()).src = "/img/template/navi2_jolblog_f2.gif";
(new Image()).src = "/img/template/navi2_oyakudachi_f2.gif";
(new Image()).src = "/img/template/navi2_present_f2.gif";
(new Image()).src = "/img/template/navi2_jolcompany_f2.gif";
(new Image()).src = "/img/template/navi2_school_f2.gif";
(new Image()).src = "/img/template/navi2_collabo_f2.gif";

(new Image()).src = "/img/subnavi_event1_f2.gif";
(new Image()).src = "/img/subnavi_event2_f2.gif";
(new Image()).src = "/img/subnavi_event3_f2.gif";


function backToTop() {
var x1 = x2 = x3 = 0;
var y1 = y2 = y3 = 0;
if (document.documentElement) {
x1 = document.documentElement.scrollLeft || 0;
y1 = document.documentElement.scrollTop || 0;
}
if (document.body) {
x2 = document.body.scrollLeft || 0;
y2 = document.body.scrollTop || 0;
}
x3 = window.scrollX || 0;
y3 = window.scrollY || 0;
var x = Math.max(x1, Math.max(x2, x3));
var y = Math.max(y1, Math.max(y2, y3));
window.scrollTo(Math.floor(x / 2), Math.floor(y / 2));
if (x > 0 || y > 0) {
window.setTimeout("backToTop()", 25);
}
}


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, '_f2'+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('_f2'+ftype, ftype);
				this.setAttribute('src', sTempSrc);
			}
		}
	}
}

window.onload = initRollovers;