/* -------------------------------------------------------------------------- */
	/*  image on off
	/* -------------------------------------------------------------------------- */
	function imgOn(imgElement) {
		if(imgElement.src.indexOf("_on.gif") == -1){
			imgElement.src = imgElement.src.replace("_off.gif", "_on.gif");
		}
	}

	function imgOut(imgElement) {
		if(imgElement.src.indexOf("_off.gif") == -1){
			imgElement.src = imgElement.src.replace("_on.gif", "_off.gif");
		}
	}

	function imgOnpng(imgElement) {
		if(imgElement.src.indexOf("_on.gif") == -1){
			imgElement.src = imgElement.src.replace("_off.png", "_on.png");
		}
	}

	function imgOutpng(imgElement) {
		if(imgElement.src.indexOf("_off.gif") == -1){
			imgElement.src = imgElement.src.replace("_on.png", "_off.png");
		}
	}

	/*--------------------------------------------------------------------------*/
	/* GNB
	/*--------------------------------------------------------------------------*/

	function initNavigation(seq,currentOn) {
		var nav = document.getElementById("gnb");
		if( nav == null || nav == undefined ) {
			return ;
		}
		nav.menu = new Array();
		nav.current = null;
		nav.menuseq = 0;
		navLen = nav.childNodes.length;

		allA = nav.getElementsByTagName("a")
		for(k = 0; k < allA.length; k++) {
			allA.item(k).onmouseover = allA.item(k).onfocus = function () {
				nav.isOver = true;
			}
			allA.item(k).onmouseout = allA.item(k).onblur = function () {
				nav.isOver = false;
				setTimeout(function () {
					if (nav.isOver == false) {
						if (nav.menu[seq])
							nav.menu[seq].onmouseover();
						else if(nav.current) {
							menuImg = nav.current.childNodes.item(0);
							menuImg.src = menuImg.src.replace("_on.gif", "_off.gif");
							if (nav.current.submenu)
								nav.current.submenu.style.display = "none";
							nav.current = null;
						}
					}
				}, 1000);
			}
		}

		for (i = 0; i < navLen; i++) {
			navItem = nav.childNodes.item(i);
			if (navItem.tagName != "LI")
				continue;

			navAnchor = navItem.getElementsByTagName("a").item(0);
			navAnchor.submenu = navItem.getElementsByTagName("div").item(0);

			navAnchor.onmouseover = navAnchor.onfocus = function () {
				if (nav.current) {
					menuImg = nav.current.childNodes.item(0);
					menuImg.src = menuImg.src.replace("_on.gif", "_off.gif");
					if (nav.current.submenu)
						nav.current.submenu.style.display = "none";
					nav.current = null;
				}
				if (nav.current != this) {
					menuImg = this.childNodes.item(0);
					menuImg.src = menuImg.src.replace("_off.gif", "_on.gif");
					if (this.submenu)
						this.submenu.style.display = "block";
						if (this.submenu && currentOn && this.submenu.parentNode.className == "menu"+seq && this.submenu.getElementsByTagName("li")[currentOn - 1])	{
							this.submenu.getElementsByTagName("li")[currentOn - 1].className = this.submenu.getElementsByTagName("li")[currentOn - 1].className + " current";
						}
					nav.current = this;
				}
				nav.isOver = true;
			}
			nav.menuseq++;
			nav.menu[nav.menuseq] = navAnchor;
		}
		if (nav.menu[seq])	{
			nav.menu[seq].onmouseover();
		}
	}


	/*--------------------------------------------------------------------------*/
	/* Main_BOARD
	/*--------------------------------------------------------------------------*/
	function main_board(i) {
		if (i==1)
		{
			document.getElementById('b1').src = 'images/main/board_01_tab_on.gif';
			document.getElementById('b2').src = 'images/main/board_02_tab_off.gif';

			document.getElementById('b_1').style.display = '';
			document.getElementById('b_2').style.display = 'none';
		}else if (i==2)
		{
			document.getElementById('b1').src = 'images/main/board_01_tab_off.gif';
			document.getElementById('b2').src = 'images/main/board_02_tab_on.gif';

			document.getElementById('b_1').style.display = 'none';
			document.getElementById('b_2').style.display = '';
		}
	}

	/*--------------------------------------------------------------------------*/
	/* Main_BOARD
	/*--------------------------------------------------------------------------*/
	function main_english_board(i) {
		if (i==1)
		{
			document.getElementById('be1').src = '../images/english/board_01_tab_on.gif';
			document.getElementById('be2').src = '../images/english/board_02_tab_off.gif';

			document.getElementById('be_1').style.display = '';
			document.getElementById('be_2').style.display = 'none';
		}else if (i==2)
		{
			document.getElementById('be1').src = '../images/english/board_01_tab_off.gif';
			document.getElementById('be2').src = '../images/english/board_02_tab_on.gif';

			document.getElementById('be_1').style.display = 'none';
			document.getElementById('be_2').style.display = '';
		}
	}

	/* -------------------------------------------------------------------------- */
	/*  FAQ
	/* -------------------------------------------------------------------------- */
	function divOpener(nowdv) {
		var faq_answer = $J('dd.table_size');
		for(var i=0; i<faq_answer.length; i++) {
			if( nowdv == (i+1) ) {
				if( faq_answer[i].style.display == "block") {
					faq_answer[i].style.display = "none";
				} else {
					faq_answer[i].style.display = "block";
				}
			} else {
				faq_answer[i].style.display = "none";
			}
		}
	}