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' ||
 field.type == 'password') {
 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 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 == 'text' ||
field.type == 'textarea' ||
field.type == 'file' ||
field.type == 'select-one' ||
field.type == 'radio' ||
field.type == 'password') {
var value = '';
if (field.type == "select-one") {
var si = field.selectedIndex;
if (si >= 0) {
value = field.options[si].value;
}
} else {
value = field.value;
}
 if (trim(value).length == 0) {
if (i == 0) {
 focusField = field;
}
fields[i++] = oRequired[x][1];
isValid = false;
 }
 }
}
if (fields.length > 0) {
focusField.focus();
alert(fields.join('\n'));
}
return isValid;
 }
 function trim(s) {
return s.replace( /^\s*/, "" ).replace( /\s*$/, "" );
 }
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 = '';
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 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 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})$");
}
alert(1);
var matched = dateRegexp.exec(value);
if(matched != null) {
if (!isValidDate(matched[2], matched[1], matched[3])) {
if (i == 0) {
 focusField = form[oDate[x][0]];
}
fields[i++] = oDate[x][1];
bValid =false;
}
} else {
if (i == 0) {
 focusField = form[oDate[x][0]];
}
fields[i++] = oDate[x][1];
bValid =false;
}
 } else if ((orderMonth < orderYear && orderMonth > orderDay)) {
var iDelim1 = orderDay + DAY.length;
var iDelim2 = orderMonth + MONTH.length;
var delim1 = datePattern.substring(iDelim1, iDelim1 + 1);
var delim2 = datePattern.substring(iDelim2, iDelim2 + 1);
if (iDelim1 == orderMonth && iDelim2 == orderYear) {
dateRegexp = new RegExp("^(\\d{2})(\\d{2})(\\d{4})$");
} 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' ||
 field.type == 'password') {
 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;
 }