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_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_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 na_restore_img_src(name, nsdoc)
{
  var img = eval((navigator.appName.indexOf('Netscape', 0) != -1) ? nsdoc+'.'+name : 'document.all.'+name);
  if (name == '')
    return;
  if (img && img.altsrc) {
    img.src    = img.altsrc;
    img.altsrc = null;
  } 
}
 
function na_preload_img()
{ 
  var img_list = na_preload_img.arguments;
  if (document.preloadlist == null) 
    document.preloadlist = new Array();
  var top = document.preloadlist.length;
  for (var i=0; i < img_list.length-1; i++) {
    document.preloadlist[top+i] = new Image;
    document.preloadlist[top+i].src = img_list[i+1];
  } 
}
 
function na_change_img_src(name, nsdoc, rpath, preload)
{ 
  var img = eval((navigator.appName.indexOf('Netscape', 0) != -1) ? nsdoc+'.'+name : 'document.all.'+name);
  if (name == '')
    return;
  if (img) {
    img.altsrc = img.src;
    img.src    = rpath;
  } 
}

function na_open_window(name, url, left, top, width, height, toolbar, menubar, statusbar, scrollbar, resizable)
{
  toolbar_str = toolbar ? 'yes' : 'no';
  menubar_str = menubar ? 'yes' : 'no';
  statusbar_str = statusbar ? 'yes' : 'no';
  scrollbar_str = scrollbar ? 'yes' : 'no';
  resizable_str = resizable ? 'yes' : 'no';
 
  cookie_str = document.cookie;
  cookie_str.toString();
 
  pos_start  = cookie_str.indexOf(name);
  pos_end    = cookie_str.indexOf('=', pos_start);
 
  cookie_name = cookie_str.substring(pos_start, pos_end);
 
  pos_start  = cookie_str.indexOf(name);
  pos_start  = cookie_str.indexOf('=', pos_start);
  pos_end    = cookie_str.indexOf(';', pos_start);
  
  if (pos_end <= 0) pos_end = cookie_str.length;
  cookie_val = cookie_str.substring(pos_start + 1, pos_end);
  if (cookie_name == name && cookie_val  == "done")
    return;
 
  window.open(url, name, 'left='+left+',top='+top+',width='+width+',height='+height+',toolbar='+toolbar_str+',menubar='+menubar_str+',status='+statusbar_str+',scrollbars='+scrollbar_str+',resizable='+resizable_str);
}

function zb_login_check_submit() {
		if(!document.zb_login.user_id.value) {
			alert("ID를 입력하여 주십시요");
			document.zb_login.user_id.focus();
			return false;
		}
		if(!document.zb_login.password.value) {
			alert("Password를 입력하여 주십시요");
			document.zb_login.password.focus();
			return false;
		}  
		return true;
	} 
	
	function check_autologin() { 
		if (document.zb_login.auto_login.checked==true) {
			var check;  
			check = confirm("자동 로그인 기능을 사용하시겠습니까?\n\n자동 로그인 사용시 다음 접속부터는 로그인을 하실필요가 없습니다.\n\n단, 게임방, 학교등 공공장소에서 이용시 개인정보가 유출될수 있으니 주의해주세요");
			if(check==false) {document.zb_login.auto_login.checked=false;	}                               
        }  
    }

function findObj(n, d) { //v4.0
  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=findObj(n,d.layers[i].document);
  if(!x && document.getElementById) x=document.getElementById(n); return x;
}
function swapImage() {
  var i,j=0,x,a=swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

var seq = "";
function show(down){
	if(seq != down){
		if(seq !=""){
			seq.style.display = "none";
		}
		down.style.display = "block";
		seq = down;
	}
	else{
		down.style.display = "none";
		seq = "";
	}
}

function checkform(form) {
		if(!form.name.value) {
		alert('이름을 입력하세요');
		form.name.focus();
		return true;
		}
	
		if(!form.addr.value){
		alert('주소를 입력하세요');
		form.addr.focus();
		return true;
		}
		
		if(!form.phone1.value){
		alert('연락처를 입력하세요');
		form.phone1.focus();
		return true;
		}
		
		if(!form.email.value) {
		alert('이메일 주소를 입력하세요');
		form.email.focus();
		return true;
		}
		
		if(!form.email2.value) {
		alert('이메일 주소를 입력하세요');
		form.email2.focus();
		return true;
		}
		
		if(form.email.value != form.email2.value) {
		alert('이메일 주소가 맞지 않습니다.');
		form.email2.focus();
		return true;
		}
		
		form.submit();
	}