//グローバル変数
var menuFlag="news"
btnName=["mark","about","news","projects","shop","artist","contact","access","subscribe","english"];

//関数
function onloadHandler(e){
	btnOver = new Array();
	for(i=0;i<10;i++){
		//ボタンをプリロード
		btnOver[i]= new Image();
		btnOver[i].src = "img/menu/"+btnName[i]+"_btn_over.gif";
		//ボタンの数だけハンドラを作る
		document.images[i].onmouseover=onmouseoverHandler;
		document.images[i].onmouseout=onmouseoutHandler;
		document.images[i].onmouseup=onmouseupHandler;
	}
	return true;
}
function onmouseoverHandler(e){
	document.body.style.cursor="hand"
	if(e){//W3Cモデル
		theTarget=e.target;
	}else if(event){//IEモデル
		theTarget=event.srcElement;
	}
	if(menuFlag!=theTarget.id){
		theTarget.src="img/menu/"+theTarget.id+"_btn_over.gif";
	}
	return true;
}
function onmouseoutHandler(e){
	document.body.style.cursor="auto"
	if(e){//W3Cモデル
		theTarget=e.target;
	}else if(event){//IEモデル
		theTarget=event.srcElement;
	}
	if(menuFlag!=theTarget.id){
		theTarget.src="img/menu/"+theTarget.id+"_btn.gif";
	}
	return true;
}
function onmouseupHandler(e){
	if(e){//W3Cモデル
		theTarget=e.target;
	}else if(event){//IEモデル
		theTarget=event.srcElement;
	}
	clearMenu();
	menuFlag=theTarget.id;
	if(theTarget.id=="mark"){
		//parent.location.href="index.html";
		parent.contents.location.href="contents/news.html";
		parent.submenus.location.href="submenus/news_menu.html";
	}else if(theTarget.id=="english"){
		parent.location.href="eng/index.html";
	}else{
		parent.contents.location.href="contents/"+theTarget.id+".html"
		parent.submenus.location.href="submenus/"+theTarget.id+"_menu.html"
	}
	if(theTarget.id=="mark"){
		document.getElementById("news").src="img/menu/news_btn_on.gif";
		menuFlag="news";
	}else if(theTarget.id!=="english"){
		theTarget.src="img/menu/"+theTarget.id+"_btn_on.gif";
	}
}
function clearMenu(){
	for(i=0;i<10;i++){
		document.getElementById(btnName[i]).src="img/menu/"+btnName[i]+"_btn.gif";
	}
}
//実行
window.onload=onloadHandler;