function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}


<!--ロールオーバーイメージ
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, '_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);
			}
		}
	}
}

window.onload = initRollovers;

//-->

<!--inputロールオーバーイメージ
function mouseImage(elem,image,type) {
	switch(type){
	case 'over':
		image=image.substring(0,image.length-4);
		elem.src=image + '_over.gif';
		break;
		
	case 'out':
		image=image.substring(0,image.length-9);
		image=image+'.gif';
		elem.src=image;
		break;
	}
}
window.onload = initRollovers;

//-->

<!--trロールオーバー背景色
function mover(elem){
  elem.style.backgroundColor='#f4f4f4';
}
function mout(elem){
  elem.style.backgroundColor='#FFFFFF'
}
//-->


/*
ページの先頭へスクロールさせるスクリプト
*/


/* backToTop
----------------------------------------*/

backToTopBootConf = {
	topFlag : "#header" //"ページの先頭へ戻る"のhrefの値
}

function yomotsuBackToTopBoot(){
	var a = document.getElementsByTagName("a");
	for(i=0;i<a .length;i++){
		if(new RegExp(backToTopBootConf.topFlag + "\\b").exec(a[i].getAttribute("href"))) {
			
			a[i].onclick = function(){
				this.removeAttribute("href")
				backToTop();
				this.setAttribute("href",backToTopBootConf.topFlag);
				return false;
			}
		}
	}
}


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 / 1.3), Math.floor(y / 1.3));

	if (x > 0 || y > 0) {
		window.setTimeout("backToTop()", 25);
	}
	else if (navigator.userAgent.indexOf("AppleWebKit") == -1){
		location.href = backToTopBootConf.topFlag;
	}
		
}

addEvent(window, 'load', yomotsuBackToTopBoot);


/* add event
----------------------------------------*/

function addEvent(obj, evType, fn){
	if (obj.addEventListener){
		obj.addEventListener(evType, fn, false);
		return true;
	}
	else if (obj.attachEvent){
		var r = obj.attachEvent("on"+evType, fn);
		return r;
	}
	else {
		return false;
	}
}