function c_id_v (cid1, cid2)
{
   var c_id_SUM = 0;
   var c_id_check = 0;
   var c_id_check_d = 0;
   var c_id_total = 0;

   c_id_check = cid2.charAt(6);

   c_id_SUM = cid1.charAt(0) * 2;
   c_id_SUM = c_id_SUM + (cid1.charAt(1) * 3);
   c_id_SUM = c_id_SUM + (cid1.charAt(2) * 4);
   c_id_SUM = c_id_SUM + (cid1.charAt(3) * 5);
   c_id_SUM = c_id_SUM + (cid1.charAt(4) * 6);
   c_id_SUM = c_id_SUM + (cid1.charAt(5) * 7);
   c_id_SUM = c_id_SUM + (cid2.charAt(0) * 8);
   c_id_SUM = c_id_SUM + (cid2.charAt(1) * 9);
   c_id_SUM = c_id_SUM + (cid2.charAt(2) * 2);
   c_id_SUM = c_id_SUM + (cid2.charAt(3) * 3);
   c_id_SUM = c_id_SUM + (cid2.charAt(4) * 4);
   c_id_SUM = c_id_SUM + (cid2.charAt(5) * 5);

   c_id_check_d = c_id_SUM % 11;

   c_id_check_d = 11 - c_id_check_d;

   if (c_id_check_d == 10) {
       c_id_check_d = 0;
   }
   if (c_id_check_d == 11) {
       c_id_check_d = 1;
   }
   if (c_id_check_d == c_id_check) {
       return true;
   } else {
       return;
   }
}


function check_it ()
{
   var obj = document.f;
   if (obj.ct_no1.value=="" || obj.ct_no2.value=="") {
      alert("Áֹεî·Ï¹øÈ£°¡ ÀÔ·Â µÇÁö ¾Ê¾Ò½À´Ï´Ù.");
      obj.ct_no1.focus();
      return false;
   }
   if (isNaN (obj.ct_no1.value) || isNaN(obj.ct_no2.value)) {
      alert("Áֹεî·Ï¹øÈ£¿¡ ¹®ÀÚ°¡ ÀÔ·Â µÇ¾ú½À´Ï´Ù.");
      obj.ct_no1.value = "";       obj.ct_no2.value = "";
      obj.ct_no1.focus();
      return false;
   }

var len = obj.password.value.length;

  if (obj.password.value.indexOf(' ',0) != -1)  {
     alert("ºñ¹Ð¹øÈ£¿¡´Â °ø¹é¾ø´Â ¼ýÀڷθ¸ ÀÔ·ÂÇØÁÖ¼¼¿ä");
     obj.password.focus();
     return false;      }

}

function check_login ()
{
   var obj = document.f;
   if (obj.userid.value=="") {
      alert("¾ÆÀ̵𰡠ÀԷµÇÁö ¾Ê¾Ò½À´Ï´Ù..");
      obj.userid.focus();
      return false;
   }

var len = obj.password.value.length;

  if (obj.password.value.indexOf(' ',0) != -1)  {
     alert("ºñ¹Ð¹øÈ£¿¡´Â °ø¹é¾ø´Â ¼ýÀڷθ¸ ÀÔ·ÂÇØÁÖ¼¼¿ä");
     obj.password.focus();
     return false;      }

}


function movefocus1()
{
	if (f.ct_no1.value!="" && f.ct_no1.value.length==6){
	f.ct_no2.focus();
	}
}

function movefocus2()
{
	if (f.ct_no2.value!="" && f.ct_no2.value.length==7){
	f.password.focus();
	}
}