//utf-8

//////////////////////////////////////////////////////////////////////////
//
// スクロールしてページトップに戻る
//
//////////////////////////////////////////////////////////////////////////


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 / 2), Math.floor(y / 2));
  if (x > 0 || y > 0) {
      window.setTimeout("backToTop()", 25);
  }
}

//////////////////////////////////////////////////////////////////////////
//
// スワップイメージ
//
//////////////////////////////////////////////////////////////////////////
(function(){
	function rollover(){
		var targetClassName = "rollImg";
		var suffix = "_o";

		var overReg = new RegExp("^(.+)(\\.[a-z]+)$");
		var outReg = new RegExp("^(.+)" + suffix + "(\\.[a-z]+)$");

		var preload = new Array();
		var images = document.getElementsByTagName("img");

		for (var i = 0, il = images.length; i < il; i++) {
			var classStr = images[i].getAttribute("class") || images[i].className;
			var classNames = classStr.split(/\s+/);
			for(var j = 0, cl = classNames.length; j < cl; j++){
				if(classNames[j] == targetClassName){

					//preload
					preload[i] = new Image();
					preload[i].src = images[i].getAttribute("src").replace(overReg, "$1" + suffix + "$2");

					//mouseover
					images[i].onmouseover = function() {
						this.src = this.getAttribute("src").replace(overReg, "$1" + suffix + "$2");
					}

					//mouseout
					images[i].onmouseout = function() {
						this.src = this.getAttribute("src").replace(outReg, "$1$2");
					}
				}
			}
		}
	}

	function addEvent(elem,event,func){
		if(elem.addEventListener) {
			elem.addEventListener(event, func, false);
		}else if(elem.attachEvent) {
			elem.attachEvent("on" + event, func);
		}
	}
	addEvent(window,"load",rollover);
})();
//////////////////////////////////////////////////////////////////////////
//
// TOPページタブコンテンツ切り替え用　TOPICS
//
//////////////////////////////////////////////////////////////////////////
function swapIfraInit(){
	for(i=1;i<5;i++){
		btnName = "tab_topics_0" + i;
		btnNameo = "tab_topics_0" + i + "_o";
		iframeContents = "topicsContents0" + i;
		btnBackNumber = "tab_topics_0" + i + "_b";
		document.getElementById(btnName).style.display = "block";
	}
	document.getElementById('tab_topics_01').style.display = "none";
	document.getElementById('tab_topics_01_o').style.display = "block";	
	document.getElementById('topicsContents01').style.display = "block";
	document.getElementById('tab_topics_01_b').style.display = "block";
	
}
	
function swapIfra(flg){
	for(i=1;i<5;i++){
		iframeContents = "topicsContents0" + i;
		btnName = "tab_topics_0" + i;
		btnNameo = "tab_topics_0" + i + "_o";
		btnBackNumber = "tab_topics_0" + i + "_b";
		//iframe内のコンテンツを全て消す
		document.getElementById(iframeContents).style.display = "none";
		//ロールオーバーのメニューを全て消す
		document.getElementById(btnNameo).style.display = "none";
		//通常時のメニューを全て出す
		document.getElementById(btnName).style.display = "block";
		//バックナンバーボタンをすべて消す
		document.getElementById(btnBackNumber).style.display = "none";
	}
	btnName = "tab_topics_0" + flg;
	btnNameo = "tab_topics_0" + flg + "_o";
	document.getElementById(btnName).style.display = "none";
	document.getElementById(btnNameo).style.display = "block";
	iframeContents = "topicsContents0" + flg;
	document.getElementById(iframeContents).style.display = "block";
	btnBackNumber = "tab_topics_0" + flg + "_b";
	document.getElementById(btnBackNumber).style.display = "block";
}
//////////////////////////////////////////////////////////////////////////
//
// TOPページタブコンテンツ切り替え用　本日の状況
//
//////////////////////////////////////////////////////////////////////////
function swapTodayInit(){
	for(i=1;i<3;i++){
		btnName = "tab_today_0" + i;
		btnNameo = "tab_today_0" + i + "_o";
		iframeContents = "todayContents0" + i;
		document.getElementById(btnName).style.display = "block";
	}
	document.getElementById('tab_today_01').style.display = "none";
	document.getElementById('tab_today_01_o').style.display = "block";	
	document.getElementById('todayContents01').style.display = "block";
}
	
function swapToday(flg){
	for(i=1;i<3;i++){
		iframeContents = "todayContents0" + i;
		btnName = "tab_today_0" + i;
		btnNameo = "tab_today_0" + i + "_o";
		//iframe内のコンテンツを全て消す
		document.getElementById(iframeContents).style.display = "none";
		//ロールオーバーのメニューを全て消す
		document.getElementById(btnNameo).style.display = "none";
		//通常時のメニューを全て出す
		document.getElementById(btnName).style.display = "block";
	}
	btnName = "tab_today_0" + flg;
	btnNameo = "tab_today_0" + flg + "_o";
	document.getElementById(btnName).style.display = "none";
	document.getElementById(btnNameo).style.display = "block";
	iframeContents = "todayContents0" + flg;
	document.getElementById(iframeContents).style.display = "block";
}
//////////////////////////////////////////////////////////////////////////
//
// トップページメイン画像差し替え
//
//////////////////////////////////////////////////////////////////////////
var r=Math.floor(Math.random()*3);
function imgChg(){
	
	atImg_01 = '<p class="img"><img src="index/img/main_0'+ r +'.jpg" alt="かつらぎ山パノラマパーク" width="848" height="275" /></p>';
	document.write(atImg_01);	
}
//////////////////////////////////////////////////////////////////////////
//
//Rトップへ
//
//////////////////////////////////////////////////////////////////////////
function goTop(){
	location.href='/index.html';
}