//ファイル名
var HTML = [, "home", "projects", "members", "publications", "collaborations", "gallery", "movie", "access"];
//インデックスの表示名（日本語）
var jaIndex = [, 'トップ', '研究紹介', 'スタッフ', '業績', '共同研究', 'ギャラリー', 'ムービー', 'アクセス'];
//インデックスの表示名（英語）
var enIndex = [, 'Home', 'Projects', 'Members', 'Publications', 'Collaborations', 'Gallery', 'Movie'];
//下に表示されるボックスの表示名（日本語）[]内でひとつのグループ
var jaSub = [["", "", "", ""], , , , ["論文", "学会発表"], , ["令和5年度","令和4年度","令和3年度", "令和2年度", "令和元年度", "平成31年度", "平成30年度", "平成29年度", "平成28年度", "平成27年度", "平成26年度"], , ];
var enSub = [["", "", "", ""], , , , ["Paper", "Academic"], , ["2022-2023","2021-2022","2020-2021","2019-2020", "2019", "2018-2019", "2017-2018", "2016-2017", "2015-2016", "2014-2015"], , ];
//下に表示されるボックスのファイル名（共通）
var subHTML = [["", "", "", ""], , , , ["pubpa", "pubac"], , ["photo5","photo4","photo3","photo2","photo1","photo31", "photo30", "photo29", "photo28", "photo27", "photo26"], , ];
//インデックスの数（日本語）
itemJnum = jaIndex.length;
//インデックスの数（英語）
itemEnum = enIndex.length;

var jaLng = ['日本語', 'English'];
var enLng = ['Japanese', 'English'];
var selectLng = ['ja', 'en'];
itemLng = selectLng.length;

var defaltWid;
var windowWid;//ブラウザ幅
var windowHei;//ブラウザ高さ

function lngitem() {
	if (oLng.value == 'ja') {
		return Number(itemJnum);
	} else {
		return Number(itemEnum);
	}
}

var oTitle;
var oIndex;
var oListBox;
var oBody;
var oLanguage;
var oTitleName;
var oSelectBox;
var oSelectNum;
var oFocusBox;
var oFocusNum;
var oSubBox;
var oSubNum;
var oLng;
var oDisplay;

function domRead() {
	defaltWid = 820;
	windowWid = window.innerWidth;//ブラウザ幅
	windowHei = window.innerHeight;//ブラウザ高さ
	
	oTitle = document.getElementById('title');
	oIndex = document.getElementById('index');
	oListBox =  document.getElementById('listbox');
	oBody = document.getElementById('body');
	oLanguage = document.getElementById('language');
	oTitleName = document.getElementById('titleName');
	oSelectBox = document.getElementById('selectBox');
	oSelectNum = document.getElementById('selectNum');
	oFocusBox = document.getElementById('focusBox');
	oFocusNum = document.getElementById('focusNum');
	oSubBox = document.getElementById('subBox');
	oSubNum = document.getElementById('subNum');
	oLng = document.getElementById('lng');
	oDisplay = document.getElementById('display');
}

window.onload = function(){
	domRead();

	//宣言部分
	if (windowWid <= Number(defaltWid)){
		var outsideLef = 0;
	} else {
		var outsideLef = (windowWid - defaltWid) / 2;
	}
	var bodyMargin = 2;
	var titleHei = oTitle.offsetHeight + bodyMargin;

	//title
	oTitle.style.width = defaltWid - 20;
	oTitle.style.left = outsideLef;
	//index
	oIndex.style.top = titleHei;
	oIndex.style.left = 0;
	oIndex.style.width = windowWid;
	//listbox
	oListBox.style.top = titleHei + oIndex.offsetHeight + 5;
	//body
	oBody.style.left = outsideLef;
	oBody.style.top = titleHei + oIndex.offsetHeight + 10;
	oBody.style.width = defaltWid;
	//language
	oLanguage.style.left = outsideLef + defaltWid - 350 - 10;
	oLanguage.style.top = 40;
	//titleName
	oTitleName.style.left = outsideLef + 10;
	setting();
}


function setting () {
	domRead()
	//親ファイル名
	if (oSelectBox.value == "") {
		oSelectBox.value = './body/ja/home.html';
		oSelectNum.value = 1;
	}
	
	if (oLng.value == "") {
		oLng.value = 'ja';
	}
	if (oDisplay.value == "") {
		oTitleName.style.display = 'none';
	} else {
		oTitleName.style.display = 'block';
		oTitleName.innerHTML = oDisplay.value;
	}
	
	for (i = 0; i <= itemLng - 1; i++) {
		var iElement = document.createElement('div');
		if (oLng.value == 'ja') {
			iElement.innerHTML = jaLng[i];
			iElement.className = 'lng';
			iElement.id = 'l' + i;
		} else {
			iElement.innerHTML = enLng[i];
			iElement.className = 'lng';
			iElement.id = 'l' + i;
		}
		if (i == 0) {
			iElement.style.float = 'left';
		} else if (i == 1) {
			iElement.style.float = 'right';
		}
		var pObject = oLanguage;
		pObject.appendChild(iElement);
		
		var oLi = document.getElementById('l' + i);
		oLi.onmouseover = lngover
		oLi.onmouseout = lngout
		oLi.onclick = lngclick
		
		if (oLng.value == selectLng[i]) {
			oLi.className = 'pushlng lng';;
		} else {
			oLi.className= 'nonlng lng';
		}
	}
	for (i = 1; i <= lngitem() - 1; i++) {
		var iElement = document.createElement('span');
		if (oLng.value == 'ja') {
			iElement.innerHTML = '<div id="a' + i + '" class="button">' + jaIndex[i] + '</div>';
		} else if (oLng.value == 'en') {
			iElement.innerHTML = '<div id="a' + i + '" class="button">' + enIndex[i] + '</div>';
		}
		var pObject = oIndex;
		pObject.appendChild(iElement);
		
		var oAi = document.getElementById('a' + i);
		oAi.onmouseover = Mover;
		oAi.onmouseout = Mout;
		oAi.onclick = click;
		oAi.style.width = defaltWid / (lngitem() - 1) - 1;
	}
	titleChange();
	oAiClass();
}
function none () {}

function Mover() {
	domRead();
	var j = this.id.substr(1);
	if (oLng.value == 'ja') {
		oFocusBox.value = './body/ja/' + HTML[j] + '.html';
	} else if (oLng.value == 'en') {
		oFocusBox.value = './body/en/' + HTML[j] + '.html';
	}
	oFocusNum.value = j;
	elementDelete();
		
	if (this.className !== 'push button') {
		this.className = 'select button';
	}
	var element = document.createElement('div');
	element.id = 'list';
	element.style.left = this.offsetLeft;
	var objBody = oListBox; 
	objBody.appendChild(element);
	try {
		for (i = 0; i <= subHTML[j].length - 1; i++) {
			if (oLng.value == 'ja') {
				var elementid = jaSub[j];
			} else {
				var elementid = enSub[j];
			}
			var element = document.createElement('div');
			element.innerHTML = elementid[i];
			element.className = 'listbox nonlist';
			element.id = 'box_' + i;
			element.onmouseover = ListBoxOver;
			element.onmouseout = ListBoxOut;
			element.style.width = 180;
			element.onclick = subClick;
			var objBody = document.getElementById('list');
			objBody.appendChild(element);
			
			var element = document.createElement('span');
			element.innerHTML = '≫';
			element.className = 'listbox nonlist';
			element.style.float = 'left';
			element.style.top = -16;
			element.id = 'boxsub_' + i;
			var objBody = document.getElementById('box_' + i); 
			objBody.appendChild(element); 
		}
		//listboxの内外の検出
		var element = document.createElement('div');
		element.id = 'detector';
		element.onmouseover = detectorOver;
		element.style.left = 0;
		element.style.width = windowWid;
		element.style.height = windowHei;
		element.style.top = 0;
		var objBody = document.body;
		objBody.appendChild(element);
	} catch (e) {
	}
}
function Mout() {
	if (this.className !== 'push button') {
		this.className= 'non button';
	}
}
function detectorOver() {
	domRead();
	if (document.getElementById('a' + oFocusNum.value).className !== 'push button') {
		document.getElementById('a' + oFocusNum.value).className = 'non button';
	}
	elementDelete();
}
function ListBoxOver() {
	domRead();
	var childs = this.childNodes;
	this.className= 'selectlist listbox';
	childs[1].className= 'selectlist listbox';
	if (oFocusNum.value !== oSelectNum.value) {
		document.getElementById('a' + oFocusNum.value).className = 'select button';
	}
}
function ListBoxOut() {
	var childs = this.childNodes;
	this.className= 'nonlist listbox';
	childs[1].className= 'nonlist listbox';
}

function lngover() {
	if (this.className !== 'pushlng lng') {
		this.className= 'selectlng lng';
	}
}
function lngout() {
	if (this.className !== 'pushlng lng') {
		this.className = 'nonlng lng';
	}
}


function click() {
	domRead();
	oBody.style.height = 0;
	oSelectBox.value = oFocusBox.value
	oSelectNum.value = oFocusNum.value
	oSubBox.value = ''
	oSubNum.value = ''
	oBody.contentDocument.location.replace(oFocusBox.value);
	oDisplay.value = '';
	oAiClass();
	oTitleName.style.display = 'none';
}
function subClick() {
	domRead();
	var j = this.id.split("_")[1];
	var subHTMLelement = subHTML[oFocusNum.value];
	oSubBox.value = './sub/' + subHTMLelement[j] + '.html';
	oSubNum.value = j;
	oBody.style.height = 0;
	oSelectBox.value = oSubBox.value;
	oSelectNum.value = oFocusNum.value;
	oBody.contentDocument.location.replace(oSubBox.value);
	
	if (oLng.value == 'ja') {
		oTitleName.innerHTML = jaSub[oSelectNum.value][oSubNum.value];
		oDisplay.value = jaSub[oSelectNum.value][oSubNum.value];
	} else if (oLng.value == 'en') {
		oTitleName.innerHTML = enSub[oSelectNum.value][oSubNum.value];
		oDisplay.value = enSub[oSelectNum.value][oSubNum.value];
	}
	oAiClass();
	oTitleName.style.display = 'block';
	elementDelete();
}

function lngclick() {
	domRead();
	if (this.className !== 'pushlng lng') {
	oBody.style.height = 0;
		j = this.id.substr(1);
		oLng.value = selectLng[j];
		
		try {
			var element = oLanguage;
			element.textContent = null;
		} catch(e) {};
		try {
			var elementsid = oIndex;
			elementsid.textContent = null;
		} catch(e) {};
		try {
			if (oSubBox.value !== ''){
				
				for (i = 0; i <= itemLng - 1; i++) {
					if (subHTML[oSelectNum.value][i] == oSubBox.value.split('/').pop().split('.')[0]) {
						oSubNum.value = i;
					}
				}
				if (oLng.value == 'ja') {
					oTitleName.innerHTML = jaSub[oSelectNum.value][oSubNum.value];
					oDisplay.value = jaSub[oSelectNum.value][oSubNum.value];
				} else if (oLng.value == 'en') {
					oTitleName.innerHTML = enSub[oSelectNum.value][oSubNum.value];
					oDisplay.value = enSub[oSelectNum.value][oSubNum.value];
				}
			}
		} catch (e) {}
		elementDelete();
		setting();
		titleChange();
	}
}

function oAiClass () {
	for (i = 1; i <= lngitem() - 1; i++) {
		var oAi = document.getElementById('a' + i);
		if (i == oSelectNum.value) {
			oAi.className = 'push button';
		} else {
			oAi.className= 'non button';
		}
	}
}
function elementDelete () {
	domRead();
	try {
		var element = document.getElementById('list');
		element.parentNode.removeChild(element);
	} catch(e) {};
	try {
		var element = document.getElementById('detector');
		element.parentNode.removeChild(element);
	} catch(e) {};
}

function titleChange() {
	domRead();
	if (oLng.value == 'ja') {
		if (subBox.value == '') {
			if (Number(oSelectNum.value) > itemJnum - 1) {
				var sBox = './body/ja/home.html';
				oSelectBox.value = './body/ja/home.html';
				oSelectNum.value = 1;
			} else {
				var sBox = './body/ja/' + HTML[oSelectNum.value] + '.html';
			}
		} else {
			var sBox = oSelectBox.value;
		}
		oBody.contentDocument.location.replace(sBox);
		document.getElementById('uni1').innerHTML = '岩手大学'
		document.getElementById('uni2').innerHTML = '理工学部, 大学院工学研究科'
		document.getElementById('uni3').innerHTML = '化学・生命理工学科　化学コース'
		document.getElementById('lab').innerHTML = '表面反応化学研究室'
		document.getElementById('upl').innerHTML = '最終更新日'
	} else {
		if (subBox.value == '') {
			if (Number(oSelectNum.value) > itemEnum - 1) {
				var sBox = './body/en/home.html';
				oSelectBox.value = './body/en/home' + '.html';
				oSelectNum.value = 1;
			} else {
				var sBox = './body/en/' + HTML[oSelectNum.value] + '.html'
			}
		} else {
			var sBox = oSelectBox.value;
		}
		oBody.contentDocument.location.replace(sBox);
		document.getElementById('uni1').innerHTML = 'Iwate University'
		document.getElementById('uni2').innerHTML = 'Faculty of Science and Engineering, Graduate School of Engineering'
		document.getElementById('uni3').innerHTML = 'Department of Chemistry and Biological Sciences　Chemistry'
		document.getElementById('lab').innerHTML = 'Shirai Laboratory'
		document.getElementById('upl').innerHTML = 'Final Updated'
	}
}