//swapImg
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_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_showHideLayers() { //v9.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) 
  with (document) if (getElementById && ((obj=getElementById(args[i]))!=null)) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
}

//png
function setPng24(obj) {
obj.width=obj.height=1;
obj.className=obj.className.replace(/\bpng24\b/i,'');
obj.style.filter =
"progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+ obj.src +"',sizingMethod='image');"
obj.src='about:blank;';
return '';
}



//관련사이트
function familyView() {
  if(document.getElementById('familySitLayer').style.display == "none") {
     document.getElementById('familySitLayer').style.display = "block";
	 document.getElementById('familySiteBt').className = "familyOver";
  }
  else {
     document.getElementById('familySitLayer').style.display = "none";
	 document.getElementById('familySiteBt').className = "familyNormal";
  }
}
document.onclick = function(e){
    var target = (e)?e.target:window.event.srcElement;
    if(target.id != 'familySitLayer' && target.id != 'familySiteBt'){
        hideLayer();
    }
}

function hideLayer(){
    var layerFamilySite = document.getElementById('familySitLayer');
    layerFamilySite.style.display = 'none';
}




function updateChar(length_limit,form,name)
{

	var comment='';
	comment = eval("document."+ form+"."+name);
	var form = document.bbsForm;
	var length = calculate_msglen(comment.value);
	if (length > length_limit) {
		alert("한글 "+Math.floor(length_limit/2)+"자, 영문 "+length_limit+"자까지 가능합니다.  \n\n초과된 글자는 자동으로 삭제됩니다.");
		comment.value = comment.value.replace(/\r\n$/, "");
		comment.value = assert_msglen(comment.value, length_limit);
	}
}


function calculate_msglen(message)
{
	var nbytes = 0;

	for (i=0; i<message.length; i++) {
		var ch = message.charAt(i);
		if(escape(ch).length > 4) {
			nbytes += 2;
		} else if (ch == '\n') {
			if (message.charAt(i-1) != '\r') {
				nbytes += 1;
			}
		} else if (ch == '<' || ch == '>') {
			nbytes += 4;
		} else {
			nbytes += 1;
		}
	}

	return nbytes;
}


function assert_msglen(message, maximum)
{
	var inc = 0;
	var nbytes = 0;
	var msg = "";
	var msglen = message.length;

	for (i=0; i<msglen; i++) {
		var ch = message.charAt(i);
		if (escape(ch).length > 4) {
			inc = 2;
		} else if (ch == '\n') {
			if (message.charAt(i-1) != '\r') {
				inc = 1;
			}
		} else if (ch == '<' || ch == '>') {
			inc = 4;
		} else {
			inc = 1;
		}
		if ((nbytes + inc) > maximum) {
			break;
		}
		nbytes += inc;
		msg += ch;
	}
	return msg;
}