// JavaScript Document

//--1--이미지 롤오버
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; ia.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&&id.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];}
}


//--3-- 레이어 스무스하게 스크롤바 따라다니는 스크립트 함수 
// layer id=> divMenu
var bNetscape4plus = (navigator.appName == "Netscape" && navigator.appVersion.substring(0,1) >= "4");
var bExplorer4plus = (navigator.appName == "Microsoft Internet Explorer" && navigator.appVersion.substring(0,1) >= "4");

function CheckUIElements()
{
        var yMenuFrom, yMenuTo, yButtonFrom, yButtonTo, yOffset, timeoutNextCheck;

        yMenuFrom   = parseInt (divMenu.style.top, 100);
        yMenuTo     = document.body.scrollTop + 45; // 위쪽 위치, 알아서 바꾸세요!!

        timeoutNextCheck = 220;

        if ( Math.abs (yButtonFrom - (yMenuTo + 118)) < 6 && yButtonTo < yButtonFrom ) {
                setTimeout ("CheckUIElements()", timeoutNextCheck);
                return;
        }


        if ( yButtonFrom != yButtonTo ) {
                yOffset = Math.ceil( Math.abs( yButtonTo - yButtonFrom ) / 10 );
                if ( yButtonTo < yButtonFrom )
                        yOffset = -yOffset;

                if ( bNetscape4plus )
                        document["divLinkButton"].top += yOffset;
                else if ( bExplorer4plus )
                        divLinkButton.style.top = parseInt (divLinkButton.style.top, 10) + yOffset;

                timeoutNextCheck = 10;
        }
        if ( yMenuFrom != yMenuTo ) {
                yOffset = Math.ceil( Math.abs( yMenuTo - yMenuFrom ) / 20 );
                if ( yMenuTo < yMenuFrom )
                        yOffset = -yOffset;

                if ( bNetscape4plus )
                        document["divMenu"].top += yOffset;
                else if ( bExplorer4plus )
                        divMenu.style.top = parseInt (divMenu.style.top, 10) + yOffset;

                timeoutNextCheck = 10;
        }

        setTimeout ("CheckUIElements()", timeoutNextCheck);
}

function OnLoad()  //스크롤 따라다니는 레이어....
{
        var y;

        // 프레임 에서 벗어나게 하는 함수입니다. 프레임에 넣으려면 삭제하세요
        if ( top.frames.length )

        // 페에지 로딩시 포지션
        if ( bNetscape4plus ) {
                document["divMenu"].top = top.pageYOffset + 118;
                document["divMenu"].visibility = "visible";
        }
        else if ( bExplorer4plus ) {
                divMenu.style.top = document.body.scrollTop + 118;
                divMenu.style.visibility = "visible";
        }

        CheckUIElements();

        return true;
}

function alertHistoryBack(msg)  
{
        alert(msg);
		history.go(-1);

}
/*
function IsNum(num) {
	 x=num.length;
	 for(i=0;i<x;i++)
	 {
	  s=num.substring(i,i+1)
	  if(s '0' || s > '9') return false;
	 }	
	 return true;
}
*/

//--- 오픈/클로즈 01
function ViewTr(flag){
	for(i=0; i < document.all('tr').length; i++)
	{
		document.all('tr')(i).style.display='none';
	}

	document.all('tr')(flag).style.display='';
}
//-->


//--- 오픈/클로즈 02
function ViewTr2(flag){
	for(i=0; i < document.all('tr').length; i++)
	{
		document.all('tr2')(i).style.display='none';
	}

	document.all('tr2')(flag).style.display='';
}
//-->

// 이미지 스무스 롤오버 제어
function menuSubAct(menuMain, menuSubImgNum, menuSubImgMode) {
	var menuSubImgName='menu_sub_img_'+menuSubImgNum;
	var menuSubImg = new Image();
	var menuSubImgOn = new Image();
	eval("menuSubImg.src='../image/"+menuMain+"/menu"+menuSubImgNum+".gif'"); 
	eval("menuSubImgOn.src='../image/"+menuMain+"/menu"+menuSubImgNum+"_on.gif'"); 

	if (menuSubImgMode=='on') {
		//alert(menuSubImgName + ' => ' + menuMain + ' -> ' + menuSubImgNum + ' -> ' + menuSubImgMode);
		document.getElementById(menuSubImgName).filters[0].apply();
		document.getElementById(menuSubImgName).src=menuSubImgOn.src; 
		document.getElementById(menuSubImgName).filters[0].play();
	} else {
		document.getElementById(menuSubImgName).filters[0].apply();
		document.getElementById(menuSubImgName).src=menuSubImg.src;
		document.getElementById(menuSubImgName).filters[0].play();
	}
}