function updateChar(length_limit, seq)
{
	var comment='';
	comment = eval("document.frmComment.str"+seq);
	var length = calculate_msglen(comment.value);
	document.getElementById("textlimit").innerHTML = length;
	if (length > length_limit) {
		alert("최대 " + length_limit + "byte이므로 초과된 글자수는 자동으로 삭제됩니다.");
		comment.value = comment.value.replace(/\r\n$/, "");
		comment.value = assert_msglen(comment.value, length_limit, "textlimit");
	}
}

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, textlimit)
{
	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;
	}
	document.getElementById(textlimit).innerHTML = nbytes;
	return msg;
}

function CheckStr(strOriginal, strFind, strChange){
  var position, strOri_Length;
  position = strOriginal.indexOf(strFind);  
  
  while (position != -1){
    strOriginal = strOriginal.replace(strFind, strChange);
    position    = strOriginal.indexOf(strFind);
  }

  strOri_Length = strOriginal.length;
  return strOri_Length;
}


function _ID(obj){return document.getElementById(obj)}

function popupLayer(s,w,h)
{
	if (!w) w = 600;
	if (!h) h = 400;

	var pixelBorder = 3;
	var titleHeight = 12;
	w += pixelBorder * 2;
	h += pixelBorder * 2 + titleHeight;

	var bodyW = document.body.clientWidth;
	var bodyH = document.body.clientHeight;

	var posX = (bodyW - w) / 2;
	var posY = (bodyH - h) / 2;

	var obj = document.createElement("div");
	with (obj.style){
		position = "absolute";
		left = 0;
		top = 0;
		width = "100%";
		height = document.body.scrollHeight;
		//backgroundColor = "#FFFFFF";
		//filter = "Alpha(Opacity=50)";
		//opacity = "0.5";
	}
	obj.id = "objPopupLayerBg";
	document.body.appendChild(obj);

	var obj = document.createElement("div");
	with (obj.style){
		position = "absolute";
		left = posX + document.body.scrollLeft;
		top = posY + document.body.scrollTop;
		width = w;
		height = h;
		backgroundColor = "#FFFFFF";
		border = "3px solid #2272AB";
	}
	obj.id = "objPopupLayer";
	document.body.appendChild(obj);

	var bottom = document.createElement("div");
	with (bottom.style){
		position = "absolute";
		width = w - pixelBorder * 2;
		height = titleHeight;
		left = 0;
		top = h - titleHeight - pixelBorder * 3;
		padding = "2px 0 0 0";
		textAlign = "right";
		backgroundColor = "#2272AB";
		color = "#ffffff";
		font = "bold 11px tahoma";
	}
	bottom.innerHTML = "<a href='javascript:closeLayer()'><font color='#FFFFFF'>Close</font></a>&nbsp;&nbsp;&nbsp;";
	obj.appendChild(bottom);

	var ifrm = document.createElement("iframe");
	with (ifrm.style){
		width = w - 6;
		height = h - pixelBorder * 2 - titleHeight - 3;
	}
	ifrm.frameBorder = 0;
	ifrm.src = s;
	obj.appendChild(ifrm);
}

function closeLayer(){
	_ID('objPopupLayer').parentNode.removeChild( _ID('objPopupLayer') );
	_ID('objPopupLayerBg').parentNode.removeChild( _ID('objPopupLayerBg') );
}