function validID() {
		if(document.mem.id.value==""){
		alert("ID¸¦ ÀÔ·Â ÇϽÅÈÄ °Ë»ö Çϼ¼¿ä");
		mem.id.focus();
		return ;
		}
		window.open("IDcheck.php3?id="+mem.id.value,"idcheck", "width=425, height=225, status=yes, resizable=yes");
	} // validID
  
  function CheckJuminNo(obj1,obj2) {

    var strresidentno1 = obj1.value;
    var strresidentno2 = obj2.value;

  
    if ( strresidentno1.length < 6) {
                        alert ("Áֹεî·Ï¹øÈ£ ±æÀÌ°¡ Á¤È®ÇÏÁö ¾Ê½À´Ï´Ù.!!");
                        obj1.focus();
                        return false;
                }

                if ( strresidentno2.length < 7 ) {
                        alert ("Áֹεî·Ï¹øÈ£ ±æÀÌ°¡ Á¤È®ÇÏÁö ¾Ê½À´Ï´Ù.!!");
                        obj2.focus();
                        return false;
                } 

                var strresidentno = strresidentno1  + strresidentno2;
                var strA, strB, strC, strD, strE, strF, strG, strH, strI, strJ, strK, strL, strM, strN, strO;
                var nCalA, nCalB, nCalC; 

                strA = strresidentno.substr(0, 1);
                strB = strresidentno.substr(1, 1);
                strC = strresidentno.substr(2, 1);
                strD = strresidentno.substr(3, 1);
                strE = strresidentno.substr(4, 1);
                strF = strresidentno.substr(5, 1);
                strG = strresidentno.substr(6, 1);
                strH = strresidentno.substr(7, 1);
                strI = strresidentno.substr(8, 1);
                strJ = strresidentno.substr(9, 1); 
                strK = strresidentno.substr(10, 1);
                strL = strresidentno.substr(11, 1);
                strM = strresidentno.substr(12, 1);        
        
                strO = strA*2 + strB*3 + strC*4 + strD*5 + strE*6 + strF*7 + strG*8 + strH*9 + strI*2 + strJ*3 + strK*4 + strL*5;

                nCalA = eval(strO);
                nCalB = nCalA % 11;
                nCalC = 11 - nCalB;
                nCalC = nCalC % 10;
                
                strv = '19';
                strw = strresidentno.substr(0, 2);
                strx = strresidentno.substr(2, 2);
                stry = strresidentno.substr(4, 2);
         
         strz = strv + strw;
         if ((strz % 4 == 0) && (strz % 100 != 0) || (strz % 400 == 0)) {
          yunyear = 29;
         }
         else yunyear = 28;
         
                if ((strx <= 0) || (strx > 12)) {
          alert("»ý³â¿ùÀÏÀÌ ¸ÂÁö ¾Ê½À´Ï´Ù.");
                        obj1.focus();
                        return false;
                }
                if ((strx == 1 || strx == 3 || strx == 5 || strx == 7 || strx == 8 || strx == 10 || strx == 12) && (stry > 31 || stry <= 0)) {
          alert("»ý³â¿ùÀÏÀÌ ¸ÂÁö ¾Ê½À´Ï´Ù.");
                        obj2.focus();
                        return false;
                }
                if ((strx == 4 || strx == 6 || strx == 9 || strx == 11) && (stry > 30 || stry <= 0)) {
          alert("»ý³â¿ùÀÏÀÌ ¸ÂÁö ¾Ê½À´Ï´Ù.");
                        obj1.focus();
                        return false;
                }
                if (strx == 2 && (stry > yunyear || stry <= 0)) {
          alert(strz + "»ý³â¿ùÀÏÀÌ ¸ÂÁö ¾Ê½À´Ï´Ù." + yunyear);
                        obj1.focus();
                        return false;
                }
                if (!((strG == 1) || (strG == 2) || (strG == 3) || (strG ==4))) {
          alert("Áֹεî·Ï¹øÈ£ µÞÀÚ¸®ÀÇ ½ÃÀÛÀº 1 ~ 4 ÀÌ¿©¾ß ÇÕ´Ï´Ù.");
                        obj2.focus();
                        return false;
                }

                if ( nCalC != strM ) {
                        alert("Áֹεî·Ï¹øÈ£°¡ ±ÔÄ¢¿¡ ¾î±ß³³´Ï´Ù.");
						obj1.focus();
                        return false;
                }   
              return true;
   } //-jumin

 function SSNCheck(str1,str2,str3,str4,str5)
  {
    var str1 = document.mem.jumin1 ;
	var str2 = document.mem.jumin2 ;
	var str3 = document.mem.birth1 ;
	var str4 = document.mem.birth2 ;
	var str5 = document.mem.birth3 ;
	var ssn = str1.value + str2.value
		str3.value="19" + ssn.substring(0,2);
		str4.value = ssn.substring(2,4);
		str5.value = ssn.substring(4,6);
	
	return true;
 } // SSNCheck()

function isNumber(obj) {
	var str = obj.value;

	if(str.length == 0) {
		alert("¹øÈ£¸¦ Àû¾î ÁÖ¼¼¿ä");
		obj.focus();
		return false;   
	} //

	for(var i=0; i < str.length; i++) {
		if(!('0' <= str.charAt(i) && str.charAt(i) <= '9')) {
		    alert("¹øÈ£¸¦ Àû¾î ÁÖ¼¼¿ä");
			obj.focus();   
			return false;	} //if
			}// for 
	return true;  
	} //-isnumber

function isSame(obj1, obj2)
{
	var str1 = obj1.value;
	var str2 = obj2.value;

	if(str1.length == 0)
		{
		   alert("ºñ¹Ð¹øÈ£¸¦ Àû¾î ÁÖ¼¼¿ä");
		   obj1.focus(); 
		   return false; 
		}

	if(str2.length == 0)
		{
		   alert("ºñ¹Ð¹øÈ£¸¦ Àû¾î ÁÖ¼¼¿ä");
		   obj2.focus(); 
		   return false; 
		}
	
		
    if(str1 != str2)
		{
		    alert("ºñ¹Ð¹øÈ£°¡ ÀÏÄ¡ÇÏÁö ¾Ê½À´Ï´Ù.");
		 	obj1.focus();
			return false; 
		}
	if(str1 == str2)
		{
			return true; 
		}
	return false;
} //-isSame 

function isEmail(obj){
	var str = obj.value;
	var i = str.indexOf("@");

	if(str.length < 1)
		{
			alert('À̸ÞÀÏÀ» Àû¾î ÁÖ¼¼¿ä');
			obj.focus() ;
			return false ;
		}

	if(i < 0)
		{
			alert('À̸ÞÀÏÀÌ ÀûÀýÄ¡ ¾Ê½À´Ï´Ù');
			obj.focus();
			return false; 
 		}

	i = str.indexOf(".");
	if(i < 0)
		{
			alert('À̸ÞÀÏÀÌ ÀûÀýÄ¡ ¾Ê½À´Ï´Ù');
			obj.focus();
			return false; 
		}

	return true;
	} //-isEmail  


function isID(obj)
 {
	var str = obj.value ;
	if(str.length == 0)
		{
			alert("¾ÆÀ̵𸦠ÀÔ·ÂÇØ ÁÖ¼¼¿ä.");
			obj.focus();
			return false;
		} //if

	str = str.toUpperCase();
	if(!('A' <= str.charAt(i) && str.charAt(i) <= 'Z'))
		{
			alert("¿µ¹®(´ë/¼Ò¹®ÀÚ), ¼ýÀÚ¿Ü¿¡´Â ³ÖÀ»¼ö ¾ø°í\n\n¼ýÀÚ·ÎµÈ ¾ÆÀ̵𵵠»ç¿ëÇÒ¼ö ¾ø½À´Ï´Ù.");
			obj.focus();
			return false; 
		} //if

	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) == '_')))
				{
		             alert("¿µ¹®(¼Ò¹®ÀÚ)/¼ýÀÚ ÀÌ¿Ü¿¡ ³ÖÀ»¼ö ¾ø½À´Ï´Ù.");
				     obj.focus();
		             return false; 
				 } //if
		} //for */
	return true;
} //-isID