function validateDate(form) {
var bValid = true;
var focusField = null;
var i = 0;
var fields = new Array();
oDate = new DateValidations();
for (x in oDate) {
var value = form[oDate[x][0]].value;
var datePattern = oDate[x][2]("datePatternStrict");
if ((form[oDate[x][0]].type == 'text' ||
form[oDate[x][0]].type == 'textarea') &&
(value.length > 0) &&
(datePattern.length > 0)) {
var MONTH = "MM";
var DAY = "dd";
var YEAR = "yyyy";
var orderMonth = datePattern.indexOf(MONTH);
var orderDay = datePattern.indexOf(DAY);
var orderYear = datePattern.indexOf(YEAR);
if ((orderDay < orderYear && orderDay > orderMonth)) {
var iDelim1 = orderMonth + MONTH.length;
var iDelim2 = orderDay + DAY.length;
var delim1 = datePattern.substring(iDelim1, iDelim1 + 1);
var delim2 = datePattern.substring(iDelim2, iDelim2 + 1);
if (iDelim1 == orderDay && iDelim2 == orderYear) {
dateRegexp = new RegExp("^(\\d{2})(\\d{2})(\\d{4})$");
} else if (iDelim1 == orderDay) {
dateRegexp = new RegExp("^(\\d{2})(\\d{2})[" + delim2 + "](\\d{4})$");
} else if (iDelim2 == orderYear) {
dateRegexp = new RegExp("^(\\d{2})[" + delim1 + "](\\d{2})(\\d{4})$");
} else {
dateRegexp = new RegExp("^(\\d{2})[" + delim1 + "](\\d{2})[" + delim2 + "](\\d{4})$");
}
var matched = dateRegexp.exec(value);
if(matched != null) {
if (!isValidDate(matched[2], matched[1], matched[3])) {
if (i == 0) {
focusField = form[oDate[x][0]];
}
fields[i++] = oDate[x][1];
bValid = false;
}
} else {
if (i == 0) {
focusField = form[oDate[x][0]];
}
fields[i++] = oDate[x][1];
bValid = false;
}
} else if ((orderMonth < orderYear && orderMonth > orderDay)) {
var iDelim1 = orderDay + DAY.length;
var iDelim2 = orderMonth + MONTH.length;
var delim1 = datePattern.substring(iDelim1, iDelim1 + 1);
var delim2 = datePattern.substring(iDelim2, iDelim2 + 1);
if (iDelim1 == orderMonth && iDelim2 == orderYear) {
dateRegexp = new RegExp("^(\\d{2})(\\d{2})(\\d{4})$");
} else if (iDelim1 == orderMonth) {
dateRegexp = new RegExp("^(\\d{2})(\\d{2})[" + delim2 + "](\\d{4})$");
} else if (iDelim2 == orderYear) {
dateRegexp = new RegExp("^(\\d{2})[" + delim1 + "](\\d{2})(\\d{4})$");
} else {
dateRegexp = new RegExp("^(\\d{2})[" + delim1 + "](\\d{2})[" + delim2 + "](\\d{4})$");
}
var matched = dateRegexp.exec(value);
if(matched != null) {
if (!isValidDate(matched[1], matched[2], matched[3])) {
if (i == 0) {
focusField = form[oDate[x][0]];
}
fields[i++] = oDate[x][1];
bValid = false;
}
} else {
if (i == 0) {
focusField = form[oDate[x][0]];
}
fields[i++] = oDate[x][1];
bValid = false;
}
} else if ((orderMonth > orderYear && orderMonth < orderDay)) {
var iDelim1 = orderYear + YEAR.length;
var iDelim2 = orderMonth + MONTH.length;
var delim1 = datePattern.substring(iDelim1, iDelim1 + 1);
var delim2 = datePattern.substring(iDelim2, iDelim2 + 1);
if (iDelim1 == orderMonth && iDelim2 == orderDay) {
dateRegexp = new RegExp("^(\\d{4})(\\d{2})(\\d{2})$");
} else if (iDelim1 == orderMonth) {
dateRegexp = new RegExp("^(\\d{4})(\\d{2})[" + delim2 + "](\\d{2})$");
} else if (iDelim2 == orderDay) {
dateRegexp = new RegExp("^(\\d{4})[" + delim1 + "](\\d{2})(\\d{2})$");
} else {
dateRegexp = new RegExp("^(\\d{4})[" + delim1 + "](\\d{2})[" + delim2 + "](\\d{2})$");
}
var matched = dateRegexp.exec(value);
if(matched != null) {
if (!isValidDate(matched[3], matched[2], matched[1])) {
if (i == 0) {
focusField = form[oDate[x][0]];
}
fields[i++] = oDate[x][1];
bValid = false;
}
} else {
if (i == 0) {
focusField = form[oDate[x][0]];
}
fields[i++] = oDate[x][1];
bValid = false;
}
} else {
if (i == 0) {
focusField = form[oDate[x][0]];
}
fields[i++] = oDate[x][1];
bValid = false;
}
}
}
if (fields.length > 0) {
focusField.focus();
alert(fields.join('\n'));
}
return bValid;
}
function isValidDate(day, month, year) {
if (month < 1 || month > 12) {
return false;
}
if (day < 1 || day > 31) {
return false;
}
if ((month == 4 || month == 6 || month == 9 || month == 11) &&
(day == 31)) {
return false;
}
if (month == 2) {
var leap = (year % 4 == 0 &&
(year % 100 != 0 || year % 400 == 0));
if (day>29 || (day == 29 && !leap)) {
return false;
}
}
return true;
}
function validateMinLength(form) {
var isValid = true;
var focusField = null;
var i = 0;
var fields = new Array();
oMinLength = new minlength();
for (x in oMinLength) {
var field = form[oMinLength[x][0]];
if (field.type == 'text' ||
field.type == 'textarea') {
var iMin = parseInt(oMinLength[x][2]("minlength"));
if ((trim(field.value).length > 0) && (field.value.length < iMin)) {
if (i == 0) {
focusField = field;
}
fields[i++] = oMinLength[x][1];
isValid = false;
}
}
}
if (fields.length > 0) {
focusField.focus();
alert(fields.join('\n'));
}
return isValid;
}
function validateRange(form) {
return validateIntRange(form);
}
function validateMinInteger(form){
var bValid = true;
var focusField = null;
var i = 0;
var fields = new Array();
oInteger = new minInteger();
for (x in oInteger) {
var field = form[oInteger[x][0]];
if (field.type == 'text' ||
field.type == 'textarea' ||
field.type == 'select-one' ||
field.type == 'radio') {
var value = '';
// get field's value
if (field.type == "select-one") {
var si = field.selectedIndex;
if (si >= 0) {
value = field.options[si].value;
}
} else {
value = field.value;
}
if (value.length > 0) {
if (!isOK(value)) {
bValid = false;
if (i == 0) {
focusField = field;
}
fields[i++] = oInteger[x][1];
} else {
var iValue = parseInt(value);
if (isNaN(iValue) || !(iValue >= -2147483648 && iValue <= 2147483647)) {
if (i == 0) {
focusField = field;
}
fields[i++] = oInteger[x][1];
bValid = false;
}
}
}
}
}
if (fields.length > 0) {
focusField.focus();
alert(fields.join('\n'));
}
return bValid;
}
function isOK(vv){
if (vv >0) return true;
else return false;
}
function validateInteger(form) {
var bValid = true;
var focusField = null;
var i = 0;
var fields = new Array();
oInteger = new IntegerValidations();
for (x in oInteger) {
var field = form[oInteger[x][0]];
if (field.type == 'text' ||
field.type == 'textarea' ||
field.type == 'select-one' ||
field.type == 'radio') {
var value = '';
// get field's value
if (field.type == "select-one") {
var si = field.selectedIndex;
if (si >= 0) {
value = field.options[si].value;
}
} else {
value = field.value;
}
if (value.length > 0) {
if (!isAllDigits(value)) {
bValid = false;
if (i == 0) {
focusField = field;
}
fields[i++] = oInteger[x][1];
} else {
var iValue = parseInt(value);
if (isNaN(iValue) || !(iValue >= -2147483648 && iValue <= 2147483647)) {
if (i == 0) {
focusField = field;
}
fields[i++] = oInteger[x][1];
bValid = false;
}
}
}
}
}
if (fields.length > 0) {
focusField.focus();
alert(fields.join('\n'));
}
return bValid;
}
function isAllDigits(argvalue) {
argvalue = argvalue.toString();
var validChars = "0123456789";
var startFrom = 0;
if (argvalue.substring(0, 2) == "0x") {
validChars = "0123456789abcdefABCDEF";
startFrom = 2;
} else if (argvalue.charAt(0) == "0") {
validChars = "01234567";
startFrom = 1;
} else if (argvalue.charAt(0) == "-") {
startFrom = 1;
}
for (var n = startFrom; n < argvalue.length; n++) {
if (validChars.indexOf(argvalue.substring(n, n+1)) == -1) return false;
}
return true;
}
function validateFloat(form) {
var bValid = true;
var focusField = null;
var i = 0;
var fields = new Array();
oFloat = new FloatValidations();
for (x in oFloat) {
var field = form[oFloat[x][0]];
if (field.type == 'text' ||
field.type == 'textarea' ||
field.type == 'select-one' ||
field.type == 'radio') {
var value = '';
// get field's value
if (field.type == "select-one") {
var si = field.selectedIndex;
if (si >= 0) {
value = field.options[si].value;
}
} else {
value = field.value;
}
if (value.length > 0) {
// remove '.' before checking digits
var tempArray = value.split('.');
var joinedString= tempArray.join('');
if (!isAllDigits(joinedString)) {
bValid = false;
if (i == 0) {
focusField = field;
}
fields[i++] = oFloat[x][1];
} else {
var iValue = parseFloat(value);
if (isNaN(iValue)) {
if (i == 0) {
focusField = field;
}
fields[i++] = oFloat[x][1];
bValid = false;
}
}
}
}
}
if (fields.length > 0) {
focusField.focus();
alert(fields.join('\n'));
}
return bValid;
}
function validateRequired(form) {
var isValid = true;
var focusField = null;
var i = 0;
var fields = new Array();
oRequired = new required();
for (x in oRequired) {
var field = form[oRequired[x][0]];
if ((field.type == 'hidden' ||
field.type == 'text' ||
field.type == 'textarea' ||
field.type == 'file' ||
field.type == 'radio' ||
field.type == 'checkbox' ||
field.type == 'select-one' ||
field.type == 'password')) {
var value = '';
// get field's value
if (field.type == "select-one") {
var si = field.selectedIndex;
if (si >= 0) {
value = field.options[si].value;
}
} else if (field.type == 'radio' || field.type == 'checkbox') {
if (field.checked) {
value = field.value;
}
} else {
value = field.value;
}
if (trim(value).length == 0) {
if ((i == 0) && (field.type != 'hidden')) {
focusField = field;
}
fields[i++] = oRequired[x][1];
isValid = false;
}
} else if (field.type == "select-multiple") {
var numOptions = field.options.length;
lastSelected=-1;
for(loop=numOptions-1;loop>=0;loop--) {
if(field.options[loop].selected) {
lastSelected = loop;
value = field.options[loop].value;
break;
}
}
if(lastSelected < 0 || trim(value).length == 0) {
if(i == 0) {
focusField = field;
}
fields[i++] = oRequired[x][1];
isValid=false;
}
} else if ((field.length > 0) && (field[0].type == 'radio' || field[0].type == 'checkbox')) {
isChecked=-1;
for (loop=0;loop < field.length;loop++) {
if (field[loop].checked) {
isChecked=loop;
break; // only one needs to be checked
}
}
if (isChecked < 0) {
if (i == 0) {
focusField = field[0];
}
fields[i++] = oRequired[x][1];
isValid=false;
}
}
}
if (fields.length > 0) {
focusField.focus();
alert(fields.join('\n'));
}
return isValid;
}
// Trim whitespace from left and right sides of s.
function trim(s) {
return s.replace( /^\s*/, "" ).replace( /\s*$/, "" );
}
function validateIhIdNum(form) {
var bValid = true;
var focusField = null;
var i = 0;
var fields = new Array();
oIhidnum = new ihidnum();
for (x in oIhidnum) {
var field = form[oIhidnum[x][0]];
if (field.type == 'text' ||
field.type == 'hidden' ||
field.type == 'textarea') {
if (trim(field.value).length==0 || !checkIhIdNum(field.value)) {
if (i == 0) {
focusField = field;
}
fields[i++] = oIhidnum[x][1];
bValid = false;
}
}
}
if (fields.length > 0) {
focusField.focus();
alert(fields.join('\n'));
}
return bValid;
}
/**
* Reference: JS Guide
* http://jsguide.net/ver2/articles/frame.php?artnum=002
*/
function checkIhIdNum(ihidnum){
fmt = /^\d{6}[1234]\d{6}$/;
if(!fmt.test(ihidnum)){
return false;
}
birthYear = (ihidnum.charAt(7) <= "2") ? "19" : "20";
birthYear += ihidnum.substr(0, 2);
birthMonth = ihidnum.substr(2, 2) - 1;
birthDate = ihidnum.substr(4, 2);
birth = new Date(birthYear, birthMonth, birthDate);
if( birth.getYear() % 100 != ihidnum.substr(0, 2) ||
birth.getMonth() != birthMonth ||
birth.getDate() != birthDate) {
return false;
}
var arrDivide = [2, 3, 4, 5, 6, 7, 8, 9, 2, 3, 4, 5];
var checkdigit = 0;
for(var i=0;i 0) {
focusField.focus();
alert(fields.join('\n'));
}
return bValid;
}
function checkPassword4(pwd) {
p_pass = pwd.value;
var cnt=0,cnt2=1,cnt3=1;
var temp="";
for(i=0;i < p_pass.length;i++){
temp_pass1 = p_pass.charAt(i);
next_pass = (parseInt(temp_pass1.charCodeAt(0)))+1;
temp_p = p_pass.charAt(i+1);
temp_pass2 = (parseInt(temp_p.charCodeAt(0)));
if (temp_pass2 == next_pass)
cnt2 = cnt2 + 1;
else
cnt2 = 1;
if (temp_pass1 == temp_p)
cnt3 = cnt3 + 1;
else
cnt3 = 1;
if (cnt2 > 3) break;
if (cnt3 > 3) break;
}
if (cnt3 > 3){
pwd.value ="";
pwd.focus();
return false;
}
return pwd;
}
function validatePassword3(form) {
var bValid = true;
var focusField = null;
var i = 0;
var fields = new Array();
oPassword = new password3();
for (x in oPassword) {
var field = form[oPassword[x][0]];
if (field.type == 'password') {
if (trim(field.value).length==0 || !checkPassword3(field)) {
if (i == 0) {
focusField = field;
}
fields[i++] = oPassword[x][1];
bValid = false;
}
}
}
if (fields.length > 0) {
focusField.focus();
alert(fields.join('\n'));
}
return bValid;
}
function checkPassword3(pwd) {
p_pass = pwd.value;
var cnt=0,cnt2=1,cnt3=1;
var temp="";
for(i=0;i < p_pass.length;i++){
temp_pass1 = p_pass.charAt(i);
next_pass = (parseInt(temp_pass1.charCodeAt(0)))+1;
temp_p = p_pass.charAt(i+1);
temp_pass2 = (parseInt(temp_p.charCodeAt(0)));
if (temp_pass2 == next_pass)
cnt2 = cnt2 + 1;
else
cnt2 = 1;
if (temp_pass1 == temp_p)
cnt3 = cnt3 + 1;
else
cnt3 = 1;
if (cnt2 > 3) break;
if (cnt3 > 3) break;
}
if (cnt2 > 3){
pwd.value ="";
pwd.focus();
return false;
}
return pwd;
}
function validateEnglish(form){
var bValid = true;
var focusField = null;
var i = 0;
var fields = new Array();
oEnglish = new english();
for (x in oEnglish) {
var field = form[oEnglish[x][0]];
if (field.type == 'text' || field.type == 'textarea') {
if (trim(field.value).length==0 || !checkEnglish(field.value)) {
if (i == 0) {
focusField = field;
}
fields[i++] = oEnglish[x][1];
bValid = false;
}
}
}
if (fields.length > 0) {
focusField.focus();
alert(fields.join('\n'));
}
return bValid;
}
function checkEnglish(EnglishStr){
for(var i=0;i 0) {
focusField.focus();
alert(fields.join('\n'));
}
return bValid;
}
function checkPassword2(pwd) {
var str = pwd.value;
for (var i=0; i < str .length; i++) {
ch_char = str .charAt(i);
ch = ch_char.charCodeAt();
if( (ch >= 33 && ch <= 47) || (ch >= 58 && ch <= 64) || (ch >= 91 && ch <= 96) || (ch >= 123 && ch <= 126) ) {
return false;
}
}
return pwd;
}
function validatePassword1(form) {
var bValid = true;
var focusField = null;
var i = 0;
var fields = new Array();
oPassword = new password1();
for (x in oPassword) {
var field = form[oPassword[x][0]];
if (field.type == 'password') {
if (trim(field.value).length==0 || !checkPassword1(field)) {
if (i == 0) {
focusField = field;
}
fields[i++] = oPassword[x][1];
bValid = false;
}
}
}
if (fields.length > 0) {
focusField.focus();
alert(fields.join('\n'));
}
return bValid;
}
function checkPassword1(pwd) {
p_pass = pwd.value;
if (pwd.value.length < 8 || pwd.value.length > 20 ){
pwd.value ="";
pwd.focus();
return false;
}
return pwd;
}
function validateEmail(form) {
var bValid = true;
var focusField = null;
var i = 0;
var fields = new Array();
oEmail = new email();
for (x in oEmail) {
if ((form[oEmail[x][0]].type == 'text' ||
form[oEmail[x][0]].type == 'textarea') &&
(form[oEmail[x][0]].value.length > 0)) {
if (!checkEmail(form[oEmail[x][0]].value)) {
if (i == 0) {
focusField = form[oEmail[x][0]];
}
fields[i++] = oEmail[x][1];
bValid = false;
}
}
}
if (fields.length > 0) {
focusField.focus();
alert(fields.join('\n'));
}
return bValid;
}
/**
* Reference: Sandeep V. Tamhankar (stamhankar@hotmail.com),
* http://javascript.internet.com
*/
function checkEmail(emailStr) {
if (emailStr.length == 0) {
return true;
}
var emailPat=/^(.+)@(.+)$/;
var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]";
var validChars="\[^\\s" + specialChars + "\]";
var quotedUser="(\"[^\"]*\")";
var ipDomainPat=/^(\d{1,3})[.](\d{1,3})[.](\d{1,3})[.](\d{1,3})$/;
var atom=validChars + '+';
var word="(" + atom + "|" + quotedUser + ")";
var userPat=new RegExp("^" + word + "(\\." + word + ")*$");
var domainPat=new RegExp("^" + atom + "(\\." + atom + ")*$");
var matchArray=emailStr.match(emailPat);
if (matchArray == null) {
return false;
}
var user=matchArray[1];
var domain=matchArray[2];
if (user.match(userPat) == null) {
return false;
}
var IPArray = domain.match(ipDomainPat);
if (IPArray != null) {
for (var i = 1; i <= 4; i++) {
if (IPArray[i] > 255) {
return false;
}
}
return true;
}
var domainArray=domain.match(domainPat);
if (domainArray == null) {
return false;
}
var atomPat=new RegExp(atom,"g");
var domArr=domain.match(atomPat);
var len=domArr.length;
if ((domArr[domArr.length-1].length < 2) ||
(domArr[domArr.length-1].length > 3)) {
return false;
}
if (len < 2) {
return false;
}
return true;
}
function validateMask(form) {
var isValid = true;
var focusField = null;
var i = 0;
var fields = new Array();
oMasked = new mask();
for (x in oMasked) {
var field = form[oMasked[x][0]];
if ((field.type == 'text' ||
field.type == 'textarea') &&
(field.value.length > 0)) {
if (!matchPattern(field.value, oMasked[x][2]("mask"))) {
if (i == 0) {
focusField = field;
}
fields[i++] = oMasked[x][1];
isValid = false;
}
}
}
if (fields.length > 0) {
focusField.focus();
alert(fields.join('\n'));
}
return isValid;
}
function matchPattern(value, mask) {
return mask.exec(value);
}
function validateIntRange(form) {
var isValid = true;
var focusField = null;
var i = 0;
var fields = new Array();
oRange = new intRange();
for (x in oRange) {
var field = form[oRange[x][0]];
if ((field.type == 'text' ||
field.type == 'textarea') &&
(field.value.length > 0)) {
var iMin = parseInt(oRange[x][2]("min"));
var iMax = parseInt(oRange[x][2]("max"));
var iValue = parseInt(field.value);
if (!(iValue >= iMin && iValue <= iMax)) {
if (i == 0) {
focusField = field;
}
fields[i++] = oRange[x][1];
isValid = false;
}
}
}
if (fields.length > 0) {
focusField.focus();
alert(fields.join('\n'));
}
return isValid;
}
function validateMaxLength(form) {
var isValid = true;
var focusField = null;
var i = 0;
var fields = new Array();
oMaxLength = new maxlength();
for (x in oMaxLength) {
var field = form[oMaxLength[x][0]];
if (field.type == 'text' ||
field.type == 'textarea') {
var iMax = parseInt(oMaxLength[x][2]("maxlength"));
if (field.value.length > iMax) {
if (i == 0) {
focusField = field;
}
fields[i++] = oMaxLength[x][1];
isValid = false;
}
}
}
if (fields.length > 0) {
focusField.focus();
alert(fields.join('\n'));
}
return isValid;
}
function validateFloatRange(form) {
var isValid = true;
var focusField = null;
var i = 0;
var fields = new Array();
oRange = new floatRange();
for (x in oRange) {
var field = form[oRange[x][0]];
if ((field.type == 'text' ||
field.type == 'textarea') &&
(field.value.length > 0)) {
var fMin = parseFloat(oRange[x][2]("min"));
var fMax = parseFloat(oRange[x][2]("max"));
var fValue = parseFloat(field.value);
if (!(fValue >= fMin && fValue <= fMax)) {
if (i == 0) {
focusField = field;
}
fields[i++] = oRange[x][1];
isValid = false;
}
}
}
if (fields.length > 0) {
focusField.focus();
alert(fields.join('\n'));
}
return isValid;
}
function validateByte(form) {
var bValid = true;
var focusField = null;
var i = 0;
var fields = new Array();
oByte = new ByteValidations();
for (x in oByte) {
var field = form[oByte[x][0]];
if (field.type == 'text' ||
field.type == 'textarea' ||
field.type == 'select-one' ||
field.type == 'radio') {
var value = '';
// get field's value
if (field.type == "select-one") {
var si = field.selectedIndex;
if (si >= 0) {
value = field.options[si].value;
}
} else {
value = field.value;
}
if (value.length > 0) {
if (!isAllDigits(value)) {
bValid = false;
if (i == 0) {
focusField = field;
}
fields[i++] = oByte[x][1];
} else {
var iValue = parseInt(value);
if (isNaN(iValue) || !(iValue >= -128 && iValue <= 127)) {
if (i == 0) {
focusField = field;
}
fields[i++] = oByte[x][1];
bValid = false;
}
}
}
}
}
if (fields.length > 0) {
focusField.focus();
alert(fields.join('\n'));
}
return bValid;
}
function validateKorean(form){
var bValid = true;
var focusField = null;
var i = 0;
var fields = new Array();
oKorean = new korean();
for (x in oKorean) {
var field = form[oKorean[x][0]];
if (field.type == 'text' || field.type == 'textarea') {
if (trim(field.value).length==0 || !checkKorean(field.value)) {
if (i == 0) {
focusField = field;
}
fields[i++] = oKorean[x][1];
bValid = false;
}
}
}
if (fields.length > 0) {
focusField.focus();
alert(fields.join('\n'));
}
return bValid;
}
function checkKorean(koreanStr){
for(var i=0;i= 0) {
value = field.options[si].value;
}
} else {
value = field.value;
}
if (value.length > 0) {
if (!isAllDigits(value)) {
bValid = false;
if (i == 0) {
focusField = field;
}
fields[i++] = oShort[x][1];
} else {
var iValue = parseInt(value);
if (isNaN(iValue) || !(iValue >= -32768 && iValue <= 32767)) {
if (i == 0) {
focusField = field;
}
fields[i++] = oShort[x][1];
bValid = false;
}
}
}
}
}
if (fields.length > 0) {
focusField.focus();
alert(fields.join('\n'));
}
return bValid;
}
function validateCreditCard(form) {
var bValid = true;
var focusField = null;
var i = 0;
var fields = new Array();
oCreditCard = new creditCard();
for (x in oCreditCard) {
if ((form[oCreditCard[x][0]].type == 'text' ||
form[oCreditCard[x][0]].type == 'textarea') &&
(form[oCreditCard[x][0]].value.length > 0)) {
if (!luhnCheck(form[oCreditCard[x][0]].value)) {
if (i == 0) {
focusField = form[oCreditCard[x][0]];
}
fields[i++] = oCreditCard[x][1];
bValid = false;
}
}
}
if (fields.length > 0) {
focusField.focus();
alert(fields.join('\n'));
}
return bValid;
}
/**
* Reference: http://www.ling.nwu.edu/~sburke/pub/luhn_lib.pl
*/
function luhnCheck(cardNumber) {
if (isLuhnNum(cardNumber)) {
var no_digit = cardNumber.length;
var oddoeven = no_digit & 1;
var sum = 0;
for (var count = 0; count < no_digit; count++) {
var digit = parseInt(cardNumber.charAt(count));
if (!((count & 1) ^ oddoeven)) {
digit *= 2;
if (digit > 9) digit -= 9;
};
sum += digit;
};
if (sum == 0) return false;
if (sum % 10 == 0) return true;
};
return false;
}
function isLuhnNum(argvalue) {
argvalue = argvalue.toString();
if (argvalue.length == 0) {
return false;
}
for (var n = 0; n < argvalue.length; n++) {
if ((argvalue.substring(n, n+1) < "0") ||
(argvalue.substring(n,n+1) > "9")) {
return false;
}
}
return true;
}