// JavaScript Document
var yomotsuRollover = {

main : function() {
var img = document.images, ipt = document.getElementsByTagName('input'), i, preLoadImg = [];
// img elements
for (i = 0; i <img.length; i++) {
if ((img[i].src.match(/.*_n\./))||(img[i].style.filter)){
preLoadImg[preLoadImg.length] = new Image;
preLoadImg[preLoadImg.length-1].src = img[i].src.replace('_n.', '_r.');

img[i].onmouseover = yomotsuRollover.over;
img[i].onmouseout  = yomotsuRollover.out;
try {img[i].addEventListener('click', yomotsuRollover.click, false);}
catch(e){img[i].attachEvent('onclick', (function(el){return function(){yomotsuRollover.click.call(el);};})(img[i]));}
}
}
// input[image] elements
for (i = 0; i <ipt.length; i++) {
if ((ipt[i].src.match(/.*_n\./))&&(ipt[i].getAttribute('type')=='image')){
preLoadImg[preLoadImg.length] = new Image;
preLoadImg[preLoadImg.length-1].src = img[i].src.replace('_n.', '_r.');

ipt[i].onmouseover = yomotsuRollover.over;
ipt[i].onmouseout  = yomotsuRollover.out;
try {ipt[i].addEventListener('click', yomotsuRollover.click, false);}
catch(e){ipt[i].attachEvent('onclick', (function(el){return function(){yomotsuRollover.click.call(el);};})(ipt[i]));}
}
}
}
,

over : function() {
var imgSrc, preLoadImgSrc;
if((this.style.filter)&&(this.style.filter.match(/_n\.png/)))//(IE5.5-6 && png)
this.style.filter = this.style.filter.replace('_n.png', '_r.png');
else
this.src = this.src.replace('_n.', '_r.');
},

out : function(){
if((this.style.filter)&&(this.style.filter.match(/_r\.png/)))//(IE5.5-6 && png)
this.style.filter = this.style.filter.replace('_r.png', '_n.png');
else
this.src = this.src.replace('_r.', '_n.');
},

click : function(){
if((this.style.filter)&&(this.style.filter.match(/_r\.png/)))//(IE5.5-6 && png)
this.style.filter = this.style.filter.replace('_r.png', '_n.png');
else
this.src = this.src.replace('_r.', '_n.');
},

addEvent : function(){
try {
window.addEventListener('load', this.main, false);
} catch (e) {
window.attachEvent('onload', this.main);
}
}
}

yomotsuRollover.addEvent();