mac = (navigator.appVersion.indexOf('Mac',0) != -1);
win = (navigator.appVersion.indexOf('Win',0) != -1);
NN6 = (navigator.appVersion.charAt(0));
var browser = navigator.appName;

//ロールオーバー
function RollOver(chgimg,filename){
	if(document.images){
	document.images[chgimg].src = filename;}
}

//トップのロールオーバー
function chgimage(chglayer,chgimg,filename){
	if(document.all){
		document.all[chglayer].document.images[chgimg].src=filename;
	}else if(document.layers){
		document.layers[chglayer].document.images[chgimg].src=filename;
	}else if(document.getElementById){
		document.images[chgimg].src=filename;
	}
}

//トップページへリンク
function topTo() {
if(navigator.appName.charAt(0)=='N'){
	if (window.pageYOffset > 0 ) {scrollTo (0,0);}
	}else if(navigator.appName.charAt(0)=='M'){
	if (document.body.scrollTop > 0 ) {scrollTo (0,0);}
	}
}



//レイヤーの表示、非表示
function showLAYER(layName){
	if(document.getElementById) document.getElementById(layName).style.visibility='visible';
	else if(document.layers) document.layers[layName].visibility='show'; 
	else if(document.all) document.all(layName).style.visibility='visible';
}
function hideLAYER(layName){
//alert(layName);
	if(document.getElementById) document.getElementById(layName).style.visibility='hidden';
	else if(document.layers) document.layers[layName].visibility="hide";
	else if(document.all) document.all(layName).style.visibility='hidden';
}
function hideALL(){
  hideLAYER('layer01')
  hideLAYER('layer02')
  hideLAYER('layer03')
  hideLAYER('layer04')
  hideLAYER('layer05')
}