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) { //v4.0
  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=MM_findObj(n,d.layers[i].document);
  if(!x && document.getElementById) x=document.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() { //v3.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v='hide')?'hidden':v; }
    obj.visibility=v; }
}

function okField(thisfield, effectlength, instring) {
	if(thisfield.value.length < effectlength) {
		alertstr = "'"+ instring + "'¶õÀÌ ºñ¾ú°Å³ª À߸ø ±âÀԵǾú½À´Ï´Ù."
		alert (alertstr)
		thisfield.focus()
		return(true)
	} else return(false)
}

function okNumeric(thisfield, effectlength, instring) {
	if(thisfield.value.length < effectlength) {
		alertstr = "'"+ instring + "'¶õÀÌ ºñ¾ú°Å³ª À߸ø ±âÀԵǾú½À´Ï´Ù."
		alert (alertstr)
		thisfield.focus()
		return(true)	
	}else{	
		if(thisfield.value.charCodeAt(0) < 48 || thisfield.value.charCodeAt(0) > 57) {
			alertstr = "'"+ instring + "'¶õÀº ¼ýÀÚ¸¸ »ç¿ëÇÏ¿©¾ß ÇÕ´Ï´Ù."
			alert (alertstr)
			thisfield.focus()
			return(true)
		} else return(false)
	}
}

function okNumber(thisfield, instring) {
	if(thisfield.value.charCodeAt(0) < 48 || thisfield.value.charCodeAt(0) > 57) {
			alertstr = "'"+ instring + "'¶õÀº ¼ýÀÚ¸¸ »ç¿ëÇÏ¿©¾ß ÇÕ´Ï´Ù."
			alert (alertstr)
			thisfield.focus()
			return(true)
	} else return(false)
}

function okEmail(thisfield, instring) {
	if(thisfield.value.indexOf("@") < 1 || thisfield.value.indexOf(".") < 3) {
		alertstr = "'"+ instring + "'¶õÀº ºñ¾ú°Å³ª ¿Ã¹Ù¸£Áö ¾ÊÀº E-mail ÁÖ¼ÒÀÔ´Ï´Ù."
		alert (alertstr)
		thisfield.focus()
		return(true)
	} else return(false)
}

function okHomepage(thisfield, instring){
	if(thisfield.value == ""){
		alertstr = "'"+ instring + "'¶õÀº ºñ¾ú°Å³ª ¿Ã¹Ù¸£Áö ¾ÊÀº ȨÆäÀÌÁö ÁÖ¼ÒÀÔ´Ï´Ù."
		alert (alertstr)
		thisfield.focus()
		return(true)
	} else return(false)
}

function errMsg(thisfield, msg) {
	alert (msg)
	thisfield.focus()
}

function opens_windows(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';
  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);
}

/* ÀÔ·Â °ªÀÌ ¾ø´Â °æ¿ì¿¡ true¸¦ ¸®ÅÏÇÑ´Ù. */
function isNull(obj) {  
	var str = obj.value;
	if(str == "") {
		obj.focus();
		return true;
	}
	cnt = 0;
	for(var i=0; i < str.length; i++) {
		if((str.charAt(i) == ' ' || str.charAt(i) == '\t'))
			cnt++;
	}
	if(str.length == cnt)
		return true;
	else
		return false;
}

/* ÀÔ·Â °ªÀÌ ¼ýÀÚÀÎ °æ¿ì¿¡ true¸¦ ¸®ÅÏÇÑ´Ù. */
function isNumber(obj) { 
	var str = obj.value;
	if(str.length == 0)
		return false;

	for(var i=0; i < str.length; i++) {
		if(!('0' <= str.charAt(i) && str.charAt(i) <= '9'))
			return false;
	}
	return true;
}

/* ¶óµð¿À ¹öÆ°ÀÌ Ã¼Å©µÇ¾î ÀÖ´Â °æ¿ì¿¡ true¸¦ ¸®ÅÏÇÑ´Ù. */
function isChecked(obj) { 
	var n = obj.length;
	var i;
	for(i = 0; i < n; i++) {
		if(obj[i].checked) {
			return true;
		}
	}
	return false;
}

/* ÀÔ·Â °ªÀÌ ¾ç¼öÀÎ °æ¿ì¿¡ true¸¦ ¸®ÅÏÇÑ´Ù. */
function isPositiveNumber(obj) { 
	if(!isNumber(obj)) {
		return false;
	}
	var str = obj.value;
	if(parseInt(str) > 0) {
		return true;
	} else {
		return false;	
	}
}

/* ÀÔ·Â °ªÀÌ from°ú to »çÀÌÀÇ ¼ýÀÚÀÎ °æ¿ì¿¡ true¸¦ ¸®ÅÏÇÑ´Ù. */
function inRange(from, to, obj) { 
	if(!isNumber(obj)) 
		return false;
		
	var fval = parseInt(from);
	if(fval == NaN)
		return false;
	
	var tval = parseInt(to);
	if(tval == NaN)
		return false;	
		
	value = parseInt(obj.value);
	if(from <= value && value <= to) 
		return true;
	else
		return false;
}

/* ÀÔ·Â °ªÀÌ ¸ðµÎ ÇѱÛÀÎ °æ¿ì¿¡ true¸¦ ¸®ÅÏÇÑ´Ù. */
function isHangul(obj) { 
	str = obj.value;	
	for(var i=0; i < str.length; i++) {
		if(!('\uAc00' <= str.charAt(i) && str.charAt(i) <= '\uD7A3')) {
			return false;
		}
	}
	return true;	
}

/* ÀÔ·Â µÎ°³ÀÇ °ªÀÌ °°Àº °æ¿ì¿¡ true¸¦ ¸®ÅÏÇÑ´Ù. */
function isSame(obj1, obj2) { 
	var str1 = obj1.value;
	var str2 = obj2.value;
	if(str1.length == 0 || str2.length == 0)
		return false;

	if(str1 == str2)
		return true;
	return false;
}

/* ÀÔ·ÂµÈ °ªÀÇ ±æÀÌ°¡ len º¸´Ù ªÀº °æ¿ì¿¡ true¸¦ ¸®ÅÏÇÑ´Ù. */
function isShort(obj, len) { 
	var str = obj.value;
	if(str.length < len) {
		obj.focus();
		obj.select();
		return true;
	}
	return false;
}

/* ÀÔ·ÂµÈ °ªÀÌ ¿µ¾î ¾ËÆĺªÀÎ °æ¿ì¿¡ true¸¦ ¸®ÅÏÇÑ´Ù. */
function isAlphabet(obj) { 
	var str = obj.value;
	if(str.length == 0)
		return false;

	str = str.toUpperCase();
	for(var i=0; i < str.length; i++) {
		if(!('A' <= str.charAt(i) && str.charAt(i) <= 'Z'))
			return false;
	}
	return true;
}

/* ÀÔ·ÂµÈ °ªÀÌ ¿µ¾î ¾ËÆĺª°ú ¼ýÀÚÀÎ °æ¿ì¿¡ true¸¦ ¸®ÅÏÇÑ´Ù. */
function isAlphaNumeric(obj) { 
	var str = obj.value;
	if(str.length == 0)
		return false;

	str = str.toUpperCase();
	for(var i=0; i < str.length; i++) {
		if(!(('A' <= str.charAt(i) && str.charAt(i) <= 'Z') ||
			('0' <= str.charAt(i) && str.charAt(i) <= '9')))
			return false;
	}
	return true;
}

/* ÀÔ·ÂµÈ °ªÀÌ ID·Î »ç¿ëµÉ ¼ö ÀÖ´Â °æ¿ì¿¡ true¸¦ ¸®ÅÏÇÑ´Ù. */
function isID(obj) { 
	var str = obj.value;
	if(str.length == 0)
		return false;

	str = str.toUpperCase();
	if(!('A' <= str.charAt(i) && str.charAt(i) <= 'Z'))
		return false;

	for(var i=1; i < str.length; i++) {
		if(!(('A' <= str.charAt(i) && str.charAt(i) <= 'Z') ||
			('0' <= str.charAt(i) && str.charAt(i) <= '9') ||
			(str.charAt(i) == '_')))
			return false;
	}
	return true;
}

/* ÀÔ·ÂµÈ °ªÀÌ E-mail ÇüÅÂÀÎ °æ¿ì¿¡ true¸¦ ¸®ÅÏÇÑ´Ù. */
function isEmail(obj) { 
	var str = obj.value;
	if(str == "")
		return false;

	var i = str.indexOf("@");
	if(i < 0)
		return false;

	i = str.indexOf(".");
	if(i < 0)
		return false;
	
	return true;
}

/* ÀÔ·ÂµÈ °ªÀÌ ½Å¿ëÄ«µå ¹øÈ£ ÇüÅÂÀÎ °æ¿ì¿¡ true¸¦ ¸®ÅÏÇÑ´Ù. */
function isCardNumber(obj) { 
	var str = obj.value;
	if(str.length != 16)
		return false;

	for(var i=0; i < 16; i++) {
		if(!('0' <= str.charAt(i) && str.charAt(i) <= '9')) 
			return false;
	}
	return true;
}

/* ÀÔ·ÂµÈ °ªÀÌ ÁֹΠ¹øÈ£ ÇüÅÂÀÎ °æ¿ì¿¡ true¸¦ ¸®ÅÏÇÑ´Ù. */
function isSSN(front, back) { 
	var birthday = front.value;
	var num = back.value;

	if(birthday.length != 6) {
		return false;
	}
	if(num.length != 7) {
		return false;
	}
	var hap = 0;
	for(var i=0; i < 6; i++) {
		var temp = birthday.charAt(i) * (i+2);
		hap += temp;
	}

	var n1 = num.charAt(0);
	var n2 = num.charAt(1);
	var n3 = num.charAt(2);
	var n4 = num.charAt(3);
	var n5 = num.charAt(4);
	var n6 = num.charAt(5);
	var n7 = num.charAt(6);

	hap += n1*8+n2*9+n3*2+n4*3+n5*4+n6*5;
	hap %= 11;
	hap = 11 - hap;
	hap %= 10;
	if(hap != n7){
		return false;
	}
	return true;
}

function flashWrite(url,w,h,id,bg,win){
	var flashStr = "<object classid='clsid:d27cdb6e-ae6d-11cf-96b8-444553540000' codebase='http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=8,0,0,0' width='"+w+"' height='"+h+"' id='"+id+"' align='middle'><param name='movie' value='"+url+"' /><param name='wmode' value='"+win+"' /><param name='menu' value='false' /><param name='quality' value='high' /><param name='bgcolor' value='"+bg+"' /><embed src='"+url+"' wmode='"+win+"' menu='false' quality='high' bgcolor='"+bg+"' width='"+w+"' height='"+h+"' name='"+id+"' align='middle' type='application/x-shockwave-flash' pluginspage='http://www.macromedia.com/go/getflashplayer' /></object>";
	document.write(flashStr);
}