/*
Standards Compliant Rollover Script
Author : Daniel Nolan
http://www.bleedingego.co.uk/webdev.php
*/

function initRollovers() {
if (!document.getElementById) return

var aPreLoad = new Array();
var sTempSrc;
var aImages = document.getElementsByTagName('img');
var bImages = document.getElementsByTagName('input');

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

if( aImages[i].getAttribute('rel') != null){
if( !aImages[i].getAttribute('rel').indexOf('png')>= 0){
	var rel =  aImages[i].getAttribute('rel');
	/*alert(aImages[i].getAttribute('rel'));*/
}
}

var NavVer = navigator.appVersion;

ex_flg = 0;
ex_flg2 = 0;
if( NavVer.indexOf('MSIE')>0 && NavVer.indexOf('MSIE 7') == -1 ){
//IE6以下です
    if( aImages[i].getAttribute('rel') == null ){
	        ex_flg = 1;
    }else{

//    if( aImages[i].getAttribute('rel').indexOf('png') == -1 ){
    if( aImages[i].getAttribute('rel').indexOf('png')>= 0){
ex_flg = 1;
ex_flg2 = 1;
		src = rel;
		ftype = '.png';

		hsrc = rel.replace(ftype, '_on'+ftype);

    }
	}
	
}else{

    ex_flg = 1;
//IE7、Firefox等です
}


if( ex_flg == 1){

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('_on'+ftype, ftype);
if(ex_flg2 == 1){sTempSrc = this.getAttribute('rel').replace('_on'+ftype, ftype);}
this.setAttribute('src', sTempSrc);
}
}
}
}

for (var i = 0; i < bImages.length; i++) { 
if (bImages[i].className == 'rollover') {
var src = bImages[i].getAttribute('src');
var ftype = src.substring(src.lastIndexOf('.'), src.length);
var hsrc = src.replace(ftype, '_on'+ftype);
var NavVer = navigator.appVersion;

ex_flg = 0;

if( NavVer.indexOf('MSIE')>0 && NavVer.indexOf('MSIE 7') == -1 ){
//IE6以下です

if( !bImages[i].getAttribute('rel')){
        ex_flg = 1;
    }
	else{
    if( bImages[i].getAttribute('rel').indexOf('png') == -1 ){
        ex_flg = 1;
    }
	}
	
}else{

    ex_flg = 1;
//IE7、Firefox等です
}

if( ex_flg == 1){
bImages[i].setAttribute('hsrc', hsrc);

aPreLoad[i] = new Image();
aPreLoad[i].src = hsrc;


bImages[i].onmouseover = function() {
sTempSrc = this.getAttribute('src');
this.setAttribute('src', this.getAttribute('hsrc'));
} 

bImages[i].onmouseout = function() {
if (!sTempSrc) sTempSrc = this.getAttribute('src').replace('_on'+ftype, ftype);
this.setAttribute('src', sTempSrc);
}
}
}
}
}

window.onload = initRollovers;