function chkLogin() {
	f = document.frmLogin;
	if(f.mem_name.value == "") {
		alert('À̸§À» ÀÔ·ÂÇÏ¿© ÁÖ¼¼¿ä.');
		f.mem_name.focus();
		return false;
	}
	if(f.regno1.value == "") {
		alert('ÁֹιøÈ£ ¾ÕÀÚ¸®¸¦ ÀÔ·ÂÇÏ¿© ÁÖ¼¼¿ä.');
		f.regno1.focus();
		return false ;
	}
	if(!isnumeric(f.regno1))return false ;
	
	if(f.regno2.value == "") {
			alert('ÁֹιøÈ£ µÞÀÚ¸®¸¦ ÀÔ·ÂÇÏ¿© ÁÖ¼¼¿ä.');
			f.regno2.focus();
			return false ;
	}
	if(!isnumeric(f.regno2))return false ;

	if(jumincheck(f.regno1.value,f.regno2.value))return false ;

	f.action="https://www.yangcheon.go.kr/member/memberJoin_step1_Dup.asp";
	//f.submit();

	encryptForm(f);
}

/////////////////////////////////////////////////////
// ¼ýÀÚÀÎÁö °Ë»ç - Çʵå ÄÄÆ÷³ÍÆ® ÀÚü¸¦ ¹Þ¾Æ¼­ °Ë»ç
/////////////////////////////////////////////////////
function isnumeric(val)
{		
	
	for (i=0; i< val.value.length; i++)
	{
		ch = val.value.charAt(i);
		if (ch < "0" || ch > "9") {
			val.select();
			alert('¹®ÀÚ´Â ¿Ã ¼ö ¾ø½À´Ï´Ù.');
			val.value = "";
			val.focus();
			return false; 
		}
	}
	return true; 
}
// ÁֹιøÈ£ üũ
function jumincheck(val1,val2)
{
	var tmp1,tmp2
	var t1,t2,t3,t4,t5,t6,t7
	tmp1=val1.substring(2,4);
	tmp2=val1.substring(4);
	if ((tmp1<"01") || (tmp1>"12")) {return true;}
	if ((tmp2<"01") || (tmp2>"31")) {return true;}
			
	t1=val1.substring(0,1);
	t2=val1.substring(1,2);
	t3=val1.substring(2,3);
	t4=val1.substring(3,4);
	t5=val1.substring(4,5);
	t6=val1.substring(5,6);
	
	t11=val2.substring(0,1);
	t12=val2.substring(1,2);
	t13=val2.substring(2,3);
	t14=val2.substring(3,4);
	t15=val2.substring(4,5);
	t16=val2.substring(5,6);
	t17=val2.substring(6,7);
	var tot=t1*2 + t2*3 + t3*4 + t4*5 + t5*6 + t6*7 ;
	tot = tot+ t11*8 + t12*9 + t13*2 + t14*3 + t15*4 + t16*5 ;
	var result= tot%11;
	result=(11-result)%10;
/*
	if (result!=t17) {
		alert('¿Ã¹Ù¸¥ Áֹεî·Ï¹øÈ£°¡ ¾Æ´Õ´Ï´Ù');
		document.frmLogin.regno1.focus();
		return true;
	}
*/
//===============¿Ü±¹ÀÎ ÁֹιøÈ£ üũ ±â´É Ãß°¡(±èÁ¾½Ä 090326)============
	if (t11 == 6 || t11 == 7 || t11 == 8 || t11 == 9)
	{
		if (check_fgnno(val1, val2) == false)
		{
			return true;
		}
	} else {
		if (result!=t17) {
			alert('¿Ã¹Ù¸¥ Áֹεî·Ï¹øÈ£°¡ ¾Æ´Õ´Ï´Ù');
			document.frmLogin.regno1.focus();
			return true;
		}
	}
}

//===============¿Ü±¹ÀÎ ÁֹιøÈ£ üũ ±â´É ½ÃÀÛ(±èÁ¾½Ä 090326)============
function check_fgnno(jumin1, jumin2) { 
/*
        if(jumin1=="" || jumin1==null || jumin2=="" || jumin2==null) { 
                alert("¿Ü±¹ÀÎ µî·Ï¹øÈ£¸¦ Àû¾îÁÖ¼¼¿ä."); 
                return false; 
        } 
		if (jumin1.length != 6) { 
                alert("¿Ü±¹ÀÎ µî·Ï¹øÈ£ ¾ÕÀÚ¸®¸¦ ´Ù½Ã ÀÔ·ÂÇϼ¼¿ä."); 
                return false; 
        } 
        if (jumin2.length != 7) { 
                alert("¿Ü±¹ÀÎ µî·Ï¹øÈ£ µÞÀÚ¸®¸¦ ´Ù½Ã ÀÔ·ÂÇϼ¼¿ä."); 
                return false; 
        } 
*/
        var sum=0; 
        var odd=0; 
        var fgnno=jumin1+jumin2; 
        buf = new Array(13); 
        for(i=0; i<13; i++) { buf[i]=parseInt(fgnno.charAt(i)); } 
        odd = buf[7]*10 + buf[8]; 
        if(odd%2 != 0) { 
                alert('¿Ü±¹Àεî·Ï¹øÈ£¿¡ ¿À·ù°¡ ÀÖ½À´Ï´Ù. ´Ù½Ã È®ÀÎÇϽʽÿÀ.'); 
                return false; 
        } 
        if( (buf[11]!=6) && (buf[11]!=7) && (buf[11]!=8) && (buf[11]!=9) ) { 
                alert('¿Ü±¹Àεî·Ï¹øÈ£¿¡ ¿À·ù°¡ ÀÖ½À´Ï´Ù. ´Ù½Ã È®ÀÎÇϽʽÿÀ.'); 
                return false; 
        } 
        multipliers = [2,3,4,5,6,7,8,9,2,3,4,5]; 
        for(i=0, sum=0; i<12; i++) { sum += (buf[i] *= multipliers[i]); } 
        sum = 11 - (sum%11); 
        if(sum >= 10) { sum -= 10; } 
        sum += 2; 
        if(sum >= 10) { sum -= 10; } 
        if(sum != buf[12]) { 
                alert('¿Ü±¹Àεî·Ï¹øÈ£¿¡ ¿À·ù°¡ ÀÖ½À´Ï´Ù. ´Ù½Ã È®ÀÎÇϽʽÿÀ.'); 
                return false; 
        } 
        return true; 
} 
//===============¿Ü±¹ÀÎ ÁֹιøÈ£ üũ ±â´É ³¡(±èÁ¾½Ä 090326)============

function cancelLogin(){
	history.back();
}