function isEmpty(s) {   
    return ((s == null) || (s.length == 0))
}

function validLength(data_val, len) {
    return (data_val.length >= len);
}

function invalidLength(date_val, len, len2) {
    return ((date_val.length >= len) && (date_val.length <= len2));
}

function isLetter (str) {   
    var len=str.length;
    for(i=0; i<len; i++) {
        if ( ((str.charAt(i) >= "a") && (str.charAt(i) <= "z")) || ((str.charAt(i) >= "A") && (str.charAt(i) <= "Z")) ) {
        }
        else {
               return false;
        }
    } 
    return true;
}

function isDigit (str) {   
    var len=str.length;
    for(i=0; i<len; i++) {
        if ((str.charAt(i) >= "0") && (str.charAt(i) <= "9")) {      
        }
        else {
             return false; 
        }
    } 
    return true;
}

function isEmail(str) {
  var supported = 0;
  if (window.RegExp) {
    var tempStr = "a";
    var tempReg = new RegExp(tempStr);
    if (tempReg.test(tempStr)) supported = 1;
  }
  if (!supported) 
    return (str.indexOf(".") > 2) && (str.indexOf("@") > 0);
  var r1 = new RegExp("(@.*@)|(\\.\\.)|(@\\.)|(^\\.)");
  var r2 = new RegExp("^.+\\@(\\[?)[a-zA-Z0-9\\-\\.]+\\.([a-zA-Z]{2,3}|[0-9]{1,3})(\\]?)$");
  return (!r1.test(str) && r2.test(str));
}


function replaceChar(str, tarch, repch) {
    var nowch  = "";
    var sumstr = "";
  
    var len=str.length;
    for(i=0; i<len; i++) {
        if (str.charAt(i) == tarch) {  
            nowch = repch;             
        }
        else {
            nowch = str.charAt(i);
        }
        sumstr = sumstr + nowch;
    }
    return sumstr;
} 

function socialCheck(soid) {
    var IDtot = 0;
    var IDAdd = "234567892345";
	
    for(i=0;i<12;i++) {
        IDtot = IDtot + parseInt(soid.substring(i,i+1)) * parseInt(IDAdd.substring(i,i+1));
    }
		
       IDtot= 11 - (IDtot%11);
	
       if(IDtot==10) {
	  IDtot = 0;
       } 
       else if(IDtot==11){
          IDtot = 1;
       }
       var tid = parseInt(soid.substring(12,13));
       if(tid == IDtot) return true;
} 


function trim(str) {
      var count = str.length;
      var len = count;                
      var st = 0;
                
      while ((st < len) && (str.charAt(st) <= ' ')) {
         st++;
      }
      while ((st < len) && (str.charAt(len - 1) <= ' ')) {
         len--;
      }                
      return ((st > 0) || (len < count)) ? str.substring(st, len) : str ;   
}

//¿ìÆí¹øÈ£ °Ë»ö â
function goZipCode( url ) {
	var w_top = (window.screen.Height / 2) - 180;
	var w_left = (window.screen.width / 2) - 160;
	window.open(url, "","scrollbars=yes,width=416,height=270,top="+ w_top +",left="+ w_left +" ");
}

//±ÛÀÚ±æÀÌüũ
function lengthCheck(str, min, max){
	var len = 0; 
	for(var i = 0 ; i < str.length ; i++){ 
		var c = escape(str.charAt(i)); 
		if( c.length == 1 ){
			len ++; 
		}else if( c.indexOf("%u") != -1 ){
			len += 2; 
		}else if( c.indexOf("%") != -1 ){
			len += c.length/3; 
		}
	}
	if(len < min || len > max){		
		return false;
	}
	return true;
}

//ÀԷ°¡´ÉÇÑ ¹®ÀÚüũ
function charCheck(str, charFormat){
	for(var i = 0 ; i < str.length ; i++){ 
		var c = escape(str.charAt(i)); 
		if ( (charFormat.indexOf(escape(str.charAt(i)))) < 0 ){
		    //alert(charFormat.indexOf(escape(str.charAt(i))));
			return false;
			break;
		}
	}
	return true;
}

//Áֹιøȣüũ
function juminCheck(jumin1,jumin2){
    var digit=0
    for (var i=0;i<jumin1.length;i++){
        var str_dig=jumin1.substring(i,i+1);
        if (str_dig<'0' || str_dig>'9'){ 
            digit=digit+1 
        }
    }
    if ((jumin1 == '') || ( digit != 0 )){
        return false;   
    }
    var digit1=0
    for (var i=0;i<jumin2.length;i++){
        var str_dig1=jumin2.substring(i,i+1);
        if (str_dig1<'0' || str_dig1>'9'){ 
            digit1=digit1+1 
        }
    }
    if ((jumin2 == '') || ( digit1 != 0 )){
        return false;   
    }
    if (jumin1.substring(2,3) > 1){
        return false;   
    }
    if (jumin1.substring(4,5) > 3){
        return false;   
    } 
    if (jumin2.substring(0,1) > 4 || jumin2.substring(0,1) == 0){
        return false;   
    }
    var a1=jumin1.substring(0,1);
    var a2=jumin1.substring(1,2);
    var a3=jumin1.substring(2,3);
    var a4=jumin1.substring(3,4);
    var a5=jumin1.substring(4,5);
    var a6=jumin1.substring(5,6);
    var check_digit=a1*2+a2*3+a3*4+a4*5+a5*6+a6*7;
    var b1=jumin2.substring(0,1);
    var b2=jumin2.substring(1,2);
    var b3=jumin2.substring(2,3);
    var b4=jumin2.substring(3,4);
    var b5=jumin2.substring(4,5);
    var b6=jumin2.substring(5,6);
    var b7=jumin2.substring(6,7);
    var check_digit=check_digit+b1*8+b2*9+b3*2+b4*3+b5*4+b6*5;
    check_digit = check_digit%11;
    check_digit = 11 - check_digit;
    check_digit = check_digit%10;
    if (check_digit != b7){
        return false;   
    }
    return true;
}

//id,pw ¿µ¹®,¼ýÀÚ Ã¼Å©
function isIdCheck (str) {   
    var len=str.length;
    for(i=0; i<len; i++) {
        if ( ((str.charAt(i) >= "a") && (str.charAt(i) <= "z")) || ((str.charAt(i) >= "A") && (str.charAt(i) <= "Z")) 
        || (str.charAt(i) >= 0 && str.charAt(i) <= 9 ) ){
        }
        else {
               return false;
        }
    } 
    return true;
}

function toWebmaster(){
    var page = "/common/mail/formmail/to_webmaster.jsp";    
    window.open(page,'to_webmaster','menubar=no,toolbar=no,directories=no,status=no,path=no,left=0,top=0,width=600,height=600,scrollbars=yes');
}


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];}
}



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