function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);

//Background image flickers on hover
/*try {
	document.execCommand('BackgroundImageCache', false, true);
} catch(e) {}*/

/* rollover */
function changeBtn(id,fg){
	btnid=document.getElementById(id);

	if (fg == 0) {
		btnid.src=btnid.src.replace("_on.gif",".gif");
		btnid.src=btnid.src.replace(".gif","_on.gif");
		btnid.onmouseout=function() {
			btnid.src=btnid.src.replace("_on.gif",".gif");
		};
		btnid.onblur=function() {
			btnid.src=btnid.src.replace("_on.gif",".gif");
		};
	}
}

/* ---------------------------------- */
/* show/hide 관련 ty추가됨
/* ty=1이면 상단 메뉴 / ty=2이면 서브메뉴
/* ---------------------------------- */
var show_id = '';
var show_ty = '';

window.onresize = function () {
	if(show_id) {
		var l = 0;
		if(show_id == 'gnb_subMenu_01') {
			l = 160;
		} else if(show_id == 'gnb_subMenu_02') {
			l = 260;
		} else if(show_id == 'gnb_subMenu_03') {
			l = 200;
		} else if(show_id == 'gnb_subMenu_04') {
			l = 50;
		} else if(show_id == 'gnb_subMenu_05') {
			l = 500;
		}
		document.getElementById(show_id).style.zIndex = "1";
		document.getElementById(show_id).style.position = "absolute";
		var p = bookmark();
		if(p == 'ie') {
			document.getElementById(show_id).style.pixelLeft = getObjLeft(document.getElementById("header")) + l;
			document.getElementById(show_id).style.pixelTop = getObjTop(document.getElementById("header1"));
		} else {
			document.getElementById(show_id).style.left = (getObjLeft(document.getElementById("header")) + l)+"px";
			if(p == 'opera') {
				document.getElementById(id).style.top = getObjTop(document.getElementById("header1"))+20;
			} else {
				document.getElementById(id).style.top = getObjTop(document.getElementById("header1"));
			}
		}
	}
}

var gnb_subMenu_set = "";

function showTopMenu(obj,id,ty) {
	hiddenTopMenu();
	//changeBtn1(id);
	document.getElementById(id).style.display = "";
	show_id = id;
	//alert(show_id);
	show_ty = ty;
	if(ty == 1) {
		var l = 0;
		if(id == 'gnb_subMenu_01') {
			l = 160;
		} else if(id == 'gnb_subMenu_02') {
			l = 260;
		} else if(id == 'gnb_subMenu_03') {
			l = 200;
		} else if(id == 'gnb_subMenu_04') {
			l = 50;
		} else if(id == 'gnb_subMenu_05') {
			l = 500;
		}

		document.getElementById(id).style.zIndex = "1";
		document.getElementById(id).style.position = "absolute";

		var p = bookmark();

		if(p == 'ie') {
			document.getElementById(id).style.pixelLeft = getObjLeft(document.getElementById("header")) + l;
			document.getElementById(id).style.pixelTop = getObjTop(document.getElementById("header1"));
		} else {
			document.getElementById(id).style.left = (getObjLeft(document.getElementById("header")) + l)+"px";
			if(p == 'opera') {
				document.getElementById(id).style.top = getObjTop(document.getElementById("header1"))+20;
			} else {
				document.getElementById(id).style.top = getObjTop(document.getElementById("header1"));
			}
		}
	}

	/*
	obj.onmouseout=function() {
		hiddenTopMenu();
		setTopMenu();
	};

	obj.onblur=function() {
		hiddenTopMenu();
		setTopMenu();
	};*/
}

 function bookmark(){ 
	if(document.all){ // 익스
	   return 'ie';
	}else if(window.sidebar){ // 파폭
	   return 'fox';
	}else if(window.opera && window.print){ // 오페라
		return 'opera';
	}
}

function hiddenDefaultTopMenu() {
	hiddenTopMenu();
	setTopMenu();	
}
function hiddenTopMenu() {
	document.getElementById("gnb_subMenu_01").style.display = "none";
	document.getElementById("gnb_subMenu_02").style.display = "none";
	document.getElementById("gnb_subMenu_03").style.display = "none";
	document.getElementById("gnb_subMenu_04").style.display = "none";
	document.getElementById("gnb_subMenu_05").style.display = "none";
}
function setTopMenu() {
	if (gnb_subMenu_set != "") {
		//document.getElementById(gnb_subMenu_set).style.display = "";
	}
}

/* ---------------------------------- */
/* 이미지변환 스크립트
/* ---------------------------------- */
function changeBtn1(id) {
	var code = 0;
	if(id == 'gnb_subMenu_01') {
		code = 0;
	} else if(id == 'gnb_subMenu_02') {
		code = 1;
	} else if(id == 'gnb_subMenu_03') {
		code = 2;
	} else if(id == 'gnb_subMenu_04') {
		code = 3;
	} else if(id == 'gnb_subMenu_05') {
		code = 4;
	}

	var a = new Array('btn_menu_01','btn_menu_02','btn_menu_03','btn_menu_04','btn_menu_05');
	for(i = 0; i < a.length; i++) {
		if(i != code) {
			btnid=document.getElementById(a[i]);
			btnid.src=btnid.src.replace("_on.gif",".gif");
		}
	}
}

/* ---------------------------------- */
/* 레이어 좌표구하기
/* ---------------------------------- */
function getObjLeft(obj) {
	var nid=obj;
	var s=0;
	while(nid.offsetParent) {
		s +=nid.offsetLeft;
		nid=nid.offsetParent;
	}
	return s;
}

/* ---------------------------------- */
/* 레이어 좌표구하기
/* ---------------------------------- */
function getObjTop(obj) {
	var nid=obj;
	var s=0;
	while(nid.offsetParent) {
		s +=nid.offsetTop;
		nid=nid.offsetParent;
	}
	return s;
}

/* ---------------------------------- */
/* 레이어 좌표구하기
/* ---------------------------------- */
function getObjBottom(obj) {
	var nid=obj;
	var s=0;
	while(nid.offsetParent) {
		s +=nid.offsetTop;
		nid=nid.offsetParent;
	}
	s = s + obj.offsetHeight;
	return s;
}