// Date Routine Check
// Returns True or False


function isValidDate(dateStr, DateName) {
// Checks for the following valid date formats:
// MM/DD/YY   MM/DD/YYYY   MM-DD-YY   MM-DD-YYYY  CHanged to YYYY/MM/DD or YYYY-MM-DD
// Also separates date into month, day, and year variables
 
//	var datePat = /^(\d{1,2})(\/|-)(\d{1,2})\2(\d{2}|\d{4})$/;
	var datePat = /^(\d{1,4})(\/|-)(\d{1,2})\2(\d{2})$/;	 
	// To require a 4 digit year entry, use this line instead:
	// var datePat = /^(\d{1,2})(\/|-)(\d{1,2})\2(\d{4})$/;

	var matchArray = dateStr.match(datePat); // is the format ok?
	
	if (matchArray == null) {
		alert(DateName + " is not in a valid format.  Please re-enter the " + DateName + " in yyyy-mm-dd format.")
		return false;
		}
		
	
        month = matchArray[3]; // parse date into variables
	day = matchArray[4];
	year = matchArray[1];
	if (month < 1 || month > 12) { // check month range
		alert("Month must be between 1 and 12.  Please re-enter the " + DateName + ".");
		return false;
		}
		
	if (day < 1 || day > 31) {
		alert("Day must be between 1 and 31.  Please re-enter the " + DateName + ".");
		return false;
		}
		
	if ((month==4 || month==6 || month==9 || month==11) && day==31) {
		alert("Month "+month+" doesn't have 31 days!  Please re-enter the " + DateName + ".")
		return false
		}
		
	if (month == 2) { // check for february 29th
		var isleap = (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0));
		if (day>29 || (day==29 && !isleap)) {
			alert("February " + year + " doesn't have " + day + " days!  Please re-enter the " + DateName + ".");
			return false;
			}
		
	} 
	return true;  // date is valid
}

function isValidDateTime(dateStr, DateName) {
// Checks for the following valid date formats:
// YYYY/MM/DD HH:MM:SS or YYYY-MM-DD HH:MM:SS
// Also separates date into month, day, and year variables

	var datePat = /^(\d{1,4})(\/|-)(\d{1,2})(\/|-)(\d{1,2})(\s)(\d{1,2})(\:)(\d{1,2})(\:)(\d{1,2})$/;	 
	var matchArray = dateStr.match(datePat); // is the format ok?
	if (matchArray == null) {
		alert(DateName + " is not in a valid format.  Please re-enter the " + DateName + " in yyyy-mm-dd hh:mm:ss format.")
		return false;
	}
		

	month = matchArray[3]; // parse date into variables
	day = matchArray[4];
	year = matchArray[1];
	hour =matchArray[7];
	minute = matchArray[9];
	second= matchArray[11];

	if (month < 1 || month > 12) { // check month range
		alert("Month must be between 1 and 12.  Please re-enter the " + DateName + ".");
		return false;
		}
		
	if (day < 1 || day > 31) {
		alert("Day must be between 1 and 31.  Please re-enter the " + DateName + ".");
		return false;
		}
		
	if ((month==4 || month==6 || month==9 || month==11) && day==31) {
		alert("Month "+month+" doesn't have 31 days!  Please re-enter the " + DateName + ".")
		return false
		}
		
	if (month == 2) { // check for february 29th
		var isleap = (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0));
		if (day>29 || (day==29 && !isleap)) {
			alert("February " + year + " doesn't have " + day + " days!  Please re-enter the " + DateName + ".");
			return false;
			}
		
	}
	if (hour < 0 || hour > 24) { // check hour range
		alert("Hour must be between 0 and 24.  Please re-enter the " + DateName + ".");
		return false;
	}
	
	if (minute < 0 || minute > 60) { // check minute range
		alert("Minute must be between 0 and 60.  Please re-enter the " + DateName + ".");
		return false;
	}
	
	if (second < 0 || second > 60) { // check second range
		alert("Second must be between 0 and 60.  Please re-enter the " + DateName + ".");
		return false;
	}			
	return true;  // date is valid
}


function isValidTime(dateStr, DateName) {
// Checks for the following valid date formats:
// HH:MM:SS

	var datePat = /^(\d{1,2})(\:)(\d{1,2})(\:)(\d{1,2})$/;	 
	var matchArray = dateStr.match(datePat); // is the format ok?
	if (matchArray == null) {
		alert(DateName + " is not in a valid format.  Please re-enter the " + DateName + " in hh:mm:ss format.")
		return false;
	}
		
	hour =matchArray[1];
	minute = matchArray[3];
	second= matchArray[5];
	if (hour < 0 || hour > 24) { // check hour range
		alert("Hour must be between 0 and 24.  Please re-enter the " + DateName + ".");
		return false;
	}
	
	if (minute < 0 || minute > 60) { // check minute range
		alert("Minute must be between 0 and 60.  Please re-enter the " + DateName + ".");
		return false;
	}
	
	if (second < 0 || second > 60) { // check second range
		alert("Second must be between 0 and 60.  Please re-enter the " + DateName + ".");
		return false;
	}			
	return true;  // time is valid
}


// Returns false if data entered is not numeric	
function NumericCheck(ControlValue){
	var digits = "0123456789"
	for (var i=0;i<ControlValue.length;i++){
		temp=ControlValue.substring(i,i+1)
		if (digits.indexOf(temp)==-1){
			return false
		}
	}
	return true
}

// Returns false if data entered is not numeric	
function NumericCurrencyCheck(ControlValue){
	var digits = "0123456789."
	for (var i=0;i<ControlValue.length;i++){
		temp=ControlValue.substring(i,i+1)
		if (digits.indexOf(temp)==-1){
			return false
		}
	}
	return true
}

// Returns false if data entered is not numeric	
function PhoneNumericCheck(ControlValue){
	var digits = "-0123456789"
	for (var i=0;i<ControlValue.length;i++){
		temp=ControlValue.substring(i,i+1)
		if (digits.indexOf(temp)==-1){
			return false
		}
	}
	return true
}
//Formats the display of phone numbers as the users keys the numbers
function InsertPhoneDashes(sPhoneNumber, sKeyStroke){
	var sTest;
	sTest = sPhoneNumber.value;
	if (sTest.length == 3){
		if (sKeyStroke !=45){
			sPhoneNumber.value = sPhoneNumber.value + "-";
		}
	}
	if (sTest.length == 7){
		if (sKeyStroke !=45){
			sPhoneNumber.value = sPhoneNumber.value + "-";
		}
	}
}

function isWhitespace (s)
{   var i;
    // Is s empty?
    if (isEmpty(s)) return true;
    // Search through string's characters one by one
    // until we find a non-whitespace character.
    // When we do, return false; if we don't, return true.
    for (i = 0; i < s.length; i++)
    {
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (whitespace.indexOf(c) == -1) return false;
    }
    // All characters are whitespace.
    return true;
}

function isMinute (s)
{   if (isEmpty(s) ||isWhitespace(s))
        return false;
    if (!isNonnegativeInteger(s)) return false;
    if  (!isIntegerInRange(s,0,60)) return false;
    return (s.length == 2);
}

function isSecond (s)
{   if (isEmpty(s) ||isWhitespace(s))
        return false;
    if (!isNonnegativeInteger(s)) return false;
    if  (!isIntegerInRange(s,0,60)) return false;
    return (s.length == 2);
}

function isHour (s)
{   if (isEmpty(s)||isWhitespace(s))
        return false;
    if (!isNonnegativeInteger(s)) return false;
    if  (!isIntegerInRange(s,0,24)) return false;
    return (s.length == 2);
}


// isYear returns true if string s is a valid
// Year number.  Must be 4 digits only.
// For Year 2000 compliance, you are advised
// to use 4-digit year numbers everywhere.
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 == 4);
}

function isSignedInteger (s)
{   if (isEmpty(s))
       if (isSignedInteger.arguments.length == 1) return defaultEmptyOK;
       else return (isSignedInteger.arguments[1] == true);

    else {
        var startPos = 0;
        var secondArg = defaultEmptyOK;

        if (isSignedInteger.arguments.length > 1)
            secondArg = isSignedInteger.arguments[1];

        // skip leading + or -
        if ( (s.charAt(0) == "-") || (s.charAt(0) == "+") )
           startPos = 1;
        return (isInteger(s.substring(startPos, s.length), secondArg))
    }
}


// Returns true if all characters in string s are numbers.
// point, exponential notation, etc.
function isInteger (s)
{   var i;
    if (isEmpty(s))
       if (isInteger.arguments.length == 1) return defaultEmptyOK;
       else return (isInteger.arguments[1] == true);

    // Search through string's characters one by one
    // until we find a non-numeric character.
    // When we do, return false; if we don't, return true.

    for (i = 0; i < s.length; i++)
    {
        // Check that current character is number.
        var c = s.charAt(i);

        if (!isDigit(c)) return false;
    }
    // All characters are numbers.
    return true;
}