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var field2focus = null;
function checknumber(obj) {
var x = obj.value
x = x.replace(",", "");
x = x.replace(",", "");
x = x.replace(",", "");
x = x.replace(",", "");
x = x.replace(",", "");
if (x == '') {
return false;
}
var anum = /(^\d+$)|(^\d+\.\d{1,10}$)/
if (anum.test(x)) {
return true;
}
else {
alert("Please input a valid number!")
field2focus = obj;
setTimeout('focusField()', 10);
return false;
}
}
function isIntegerOnly(obj) {
var i;
var s = obj.value;
for (i = 0; i < s.length; i++) {
// Check that current character is number.
var c = s.charAt(i);
if (((c < "0") || (c > "9"))) {
alert("Please input a valid integer!")
field2focus = obj;
setTimeout('focusField()', 10);
return false;
}
}
// All characters are integers.
return true;
}
function focusField() {
if (field2focus) field2focus.focus();
}
function isAlphanumeric(s) {
var i;
if (isEmpty(s))
if (isAlphanumeric.arguments.length == 1) return defaultEmptyOK;
else return (isAlphanumeric.arguments[1] == true);
for (i = 0; i < s.length; i++) {
// Check that current character is number or letter.
var c = s.charAt(i);
if (!(isLetter(c) || isDigit(c)))
return false;
}
// All characters are numbers or letters.
return true;
}
function isYear(s) {
if (isEmpty(s))
if (isYear.arguments.length == 1) return defaultEmptyOK;
else return (isYear.arguments[1] == true);
if (!isNonnegativeInteger(s)) return false;
return ((s.length == 2) || (s.length == 4));
}
function isIntegerInRange(s, a, b) {
if (isEmpty(s))
if (isIntegerInRange.arguments.length == 1) return defaultEmptyOK;
else return (isIntegerInRange.arguments[1] == true);
if (!isInteger(s, false)) return false;
var num = parseInt(s);
return ((num >= a) && (num <= b));
}
function isMonth(s) {
if (isEmpty(s))
if (isMonth.arguments.length == 1) return defaultEmptyOK;
else return (isMonth.arguments[1] == true);
return isIntegerInRange(s, 1, 12);
}
function isDay(s) {
if (isEmpty(s))
if (isDay.arguments.length == 1) return defaultEmptyOK;
else return (isDay.arguments[1] == true);
return isIntegerInRange(s, 1, 31);
}
// Declaring valid date character, minimum year and maximum year
var dtCh = "/";
var minYear = 1900;
var maxYear = 2100;
function isInteger(s) {
var i;
for (i = 0; i < s.length; i++) {
// Check that current character is number.
var c = s.charAt(i);
if (((c < "0") || (c > "9"))) return false;
}
// All characters are numbers.
return true;
}
function stripCharsInBag(s, bag) {
var i;
var returnString = "";
// Search through string's characters one by one.
// If character is not in bag, append to returnString.
for (i = 0; i < s.length; i++) {
var c = s.charAt(i);
if (bag.indexOf(c) == -1) returnString += c;
}
return returnString;
}
function daysInFebruary(year) {
// February has 29 days in any year evenly divisible by four,
// EXCEPT for centurial years which are not also divisible by 400.
return (((year % 4 == 0) && ((!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28);
}
function DaysArray(n) {
for (var i = 1; i <= n; i++) {
this[i] = 31
if (i == 4 || i == 6 || i == 9 || i == 11) { this[i] = 30 }
if (i == 2) { this[i] = 29 }
}
return this
}
function isDate(dtStr) {
var daysInMonth = DaysArray(12)
var pos1 = dtStr.indexOf(dtCh)
var pos2 = dtStr.indexOf(dtCh, pos1 + 1)
var strMonth = dtStr.substring(0, pos1)
var strDay = dtStr.substring(pos1 + 1, pos2)
var strYear = dtStr.substring(pos2 + 1)
strYr = strYear
if (strDay.charAt(0) == "0" && strDay.length > 1) strDay = strDay.substring(1)
if (strMonth.charAt(0) == "0" && strMonth.length > 1) strMonth = strMonth.substring(1)
for (var i = 1; i <= 3; i++) {
if (strYr.charAt(0) == "0" && strYr.length > 1) strYr = strYr.substring(1)
}
month = parseInt(strMonth)
day = parseInt(strDay)
year = parseInt(strYr)
if (pos1 == -1 || pos2 == -1) {
alert("The date format should be : mm/dd/yyyy")
return false
}
if (strMonth.length < 1 || month < 1 || month > 12) {
alert("Please enter a valid month")
return false
}
if (strDay.length < 1 || day < 1 || day > 31 || (month == 2 && day > daysInFebruary(year)) || day > daysInMonth[month]) {
alert("Please enter a valid day")
return false
}
if (strYear.length != 4 || year == 0 || year < minYear || year > maxYear) {
alert("Please enter a valid 4 digit year between " + minYear + " and " + maxYear)
return false
}
if (dtStr.indexOf(dtCh, pos2 + 1) != -1 || isInteger(stripCharsInBag(dtStr, dtCh)) == false) {
alert("Please enter a valid date")
return false
}
return true
}
function ValidateForm() {
var dt = document.frmSample.txtDate
if (isDate(dt.value) == false) {
dt.focus()
return false
}
return true
}
function checkDateFormat(obj) {
if (obj.value != "") {
var result = isDate(obj.value);
if (!result) {
field2focus = obj;
setTimeout('focusField()', 10);
obj.focus();
}
}
}