<!--


	// This file contains the data validation JavaScript functions
	// It is included in the HTML pages with forms that need these
	// data validation routines.


// DEFINE VARIABLES

// whitespace characters
var whitespace = " \t\n\r";



/****************************************************************/

// PURPOSE:  Check to see if the string passed in is a valid time.
//	A valid time is defined as a string which is postfixed with either
//  "PM" or "AM".  Next it checks to see if there is a colon in the
//  string.  If there is, it makes sure that at least one digit preceeds
//  it and two proceed it.

	function IsTime(strTime)
	{
		var strTestTime = new String(strTime);
		strTestTime.toUpperCase();

		var bolTime = false;

		if (strTestTime.indexOf("PM",1) != -1 || strTestTime.indexOf("AM",1))
			bolTime = true;

		if (bolTime && strTestTime.indexOf(":",0) == 0)
			bolTime = false;

		var nColonPlace = strTestTime.indexOf(":",1);
		if (bolTime && ((parseInt(nColonPlace) + 5) < (strTestTime.length - 1) || (parseInt(nColonPlace) + 4) > (strTestTime.length - 1)))
			bolTime = false;


		return bolTime;
	}

/****************************************************************/

function replaceAll (s, fromStr, toStr)
{
	var new_s = s;
	for (i = 0; i < 100 && new_s.indexOf (fromStr) != -1; i++)
	{
		new_s = new_s.replace (fromStr, toStr);
	}
	return new_s;
}

/****************************************************************/

/* PURPOSE:  Since we are using the single tick mark as the
	string delimiter to construct our SQL queries, a string with
	a tick mark in it will cause a SQL error.  Therefore we replace
	all "'" with "''", which eliminates the possibility of a SQL error.
*/

function sqlSafe (s)
{
	var new_s = s;
	new_s = replaceAll (new_s, "'", "|");
	new_s = replaceAll (new_s, "|", "''");
	new_s = replaceAll (new_s, "\"", "|");
	new_s = replaceAll (new_s, "|", "''");
	return new_s;
}

/****************************************************************/

function makeSafe (i)
{
	i.value = sqlSafe (i.value);
}

/****************************************************************/

// Check whether string s is empty.

function isEmpty(s)
{   return ((s == null) || (s.length == 0))
}

/****************************************************************/

// Returns true if string s is empty or 
// whitespace characters only.

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;
}

/****************************************************************/

// isEmail (STRING s [, BOOLEAN emptyOK])
// 
// Email address must be of form a@b.c ... in other words:
// * there must be at least one character before the @
// * there must be at least one character before and after the .
// * the characters @ and . are both required
//
// For explanation of optional argument emptyOK,
// see comments of function isInteger.

function isEmail (s)
{   // is s whitespace?
    if (isWhitespace(s)) return true;
    
    // there must be >= 1 character before @, so we
    // start looking at character position 1 
    // (i.e. second character)
    var i = 1;
    var sLength = s.length;

    // look for @
    while ((i < sLength) && (s.charAt(i) != "@"))
    { i++
    }

    if ((i >= sLength) || (s.charAt(i) != "@")) return false;
    else i += 2;

    // look for .
    while ((i < sLength) && (s.charAt(i) != "."))
    { i++
    }

    // there must be at least one character after the .
    if ((i >= sLength - 1) || (s.charAt(i) != ".")) return false;
    else return true;
}

/****************************************************************/

// Checks to see if a required field is blank.  If it is, a warning
// message is displayed...

function ForceEntry(objField, FieldName)
{
	var strField = new String(objField.value);
	if (isWhitespace(strField)) {
		// alert("You need to enter information for " + FieldName);
		objField.focus();
		objField.select();
		return false;
	}
	else {
		return true;
	}
}
		
/****************************************************************/

// Returns true if the string passed in is a valid number
//  (no alpha characters), else it displays an error message

function ForceNumber(strField)
{
	if (isWhitespace(strField)) return true;

	var i = 0;

	for (i = 0; i < strField.length; i++)
		if (strField.charAt(i) < '0' || strField.charAt(i) > '9') {
			return false;
		}

	return true;
}

/****************************************************************/

// Returns true if the string passed in is a valid money
//  (no alpha characters except a decimal place), 
//   else it displays an error message

function ForceMoney(strField)
{
	if (isWhitespace(strField)) return true;

	var i = 0;

	for (i = 0; i < strField.length; i++)
		if ((strField.charAt(i) < '0' || strField.charAt(i) > '9') && (strField.charAt(i) != '.')) {
			return false;
		}
	return true;
}


/****************************************************************/

// Right trims the string...  Useful for SQL datatypes of CHAR

function RTrim(strTrim)
{
	var str = new String(strTrim);
	var i = 0;
	var c = "";
	var endpos = 0

	for (i = str.length; i >= 0 && endpos == 0; i = i - 1) {
		c = str.charAt(i);
		if (whitespace.indexOf(c) == -1)
			endpos = i;
	}

	return str.substring(0,endpos+1);
}

/****************************************************************/

/* PURPOSE:  Returns true if the string is a valid date number.
	A method is passed in (1 = month, 2 = day).  If the string is
	nonnumeric, false is passed back.  If the day in the date string
	is greater than 31, false is returned.  If the month is greater
	than 12, an error is returned.
*/

function isDateNumber(strNum,method)
{
	var str = new String(strNum);
	var i = 0;

	if (isNaN(parseInt(str)) || parseInt(str) < 0) return false;

	if (method == 2)
		if (parseInt(str) > 31)
			return false;
	if (method == 1)
		if (parseInt(str) > 12)
			return false;

	for (i = 0; i < str.length; i++)
		if (str.charAt(i) < '0' || str.charAt(i) > '9')
			return false;


	return true;
}

/****************************************************************/

/* PURPOSE: Checks to see if the string is a valid date.  A valid
	date is defined as any of the following:

		MM/DD/YY, MM/DD/YYYY, M/D/YY, M/D/YYYY,
		MM-DD-YY, MM-DD-YYYY, M-D-YY, M-D-YYYY
*/

function ForceDate(strDate)
{
	var str = strDate;

	if (isWhitespace(str)) {
		return true;
		// if the field is empty, just return true...
	}

	var i = 0, count = str.length, j = 0;
	while ((str.charAt(i) != "/" && str.charAt(i) != "-") && i < count) {
		i++;
	}

	if (i == count || i > 2) {
		return false;
	}

	var addOne = false;
	if (i == 2) addOne = true;

	if (!isDateNumber(str.substring(0,i),1)) {
		return false;
	}

	j = i+1;
	i = 0;

	while ((str.charAt(i+j) != "/" && str.charAt(j+i) != "-") && i+j < count)
		i++;

	if (i+j == count || i > 2) {
		return false;
	}

	if (!isDateNumber(str.substring(j,i+j),2)) {
		return false;
	}

	j = i+3;
	i = 0;

	if (addOne) j++;

	while (i+j < count)
		i++;


	if (i != 2 && i != 4) {
		return false;
	}

	if (!isDateNumber(str.substring(j,i+j),3)) {
		return false;
	}

	return true;
}

/****************************************************************/

// This function determines if the string passed in is a valid
// US zip code.  It accepts either ##### or #####-####.  If the
// string is valid, it returns true, else false.

function isZipcode(strZip)
{
	var s = new String(strZip);

	if (s.length != 5 && s.length != 10)
		// inappropriate length
		return false;


	for (var i=0; i < s.length; i++)
		if ((s.charAt(i) < '0' || s.charAt(s) > '9') && s.charAt(i) != '-')
			return false;

	return true;
}

/****************************************************************/

// This function ensures that a field is less than or equal to the
// Length passed in.  You must call this function with the element
// name in your form (for example: "ForceLength(document.forms[0].txtElement)"
// as opposed to "ForceLength(document.forms[0].txtElement.value)"
// If the field's value is too large, an error message is displayed
// and false is returned, else true is returned.

function ForceLength(objField, nLength, strWarning)
{
	var strField = new String(objField.value);

	if (strField.length > nLength) {
		alert(strWarning);
		return false;
	}
	return true;
}



// DAN'S FUNCTIONS

/*
USE THESE FUNCTIONS
iID (6 digit ID number) isCardID(iID). Empty OK.
strFName (First Name) No validation. May not be empty.
strLName (Last Name) No validation. May not be empty.
strEmail (Email) isEmail (s) Empty OK
strPhone (Phone Number) isPhone (strPhone) Empty OK
strDOB (Birthday) ForceDate(strDate,strField) May not be empty.
curAmtPaid (currency) ForceMoney(objField, FieldName) Empty OK.
curAmtScholarship (currency) ForceMoney(objField, FieldName) Empty OK.
*/

// This function takes a string and checks it to see if it's a valid Trinity Youth CardID.
function isCardID(iID) {
	var reCardID = /777[0-9]{3}/;
	return reCardID.test(iID);
}

// This function takes a string and checks it to see if it's a valid phone number.
function isPhone (objPhone) {
	//var rePhone = /^\(?\d{3}[.|\-|\)| ]? ?\d{3}[\-|.| ]?\d{4}$/
	var rePhone = /^\(?(\d{3})[.|\-|\)| ]? ?(\d{3})[\-|.| ]?(\d{4})$/
	if (rePhone.test(objPhone.value)) {
		objPhone.value = objPhone.value.replace(rePhone, "$1-$2-$3");
	}
	return rePhone.test(objPhone.value)
}

function correctMoney(objAmt) {
	var str = objAmt.value;
	var reAmt = /(\.)/;
	if (!reAmt.test(str)) {
		objAmt.value = str + ".00"
	}
}

// This function takes a field as input and applies an appropriate test based on the field name.
function validate(objElement) {
	switch (objElement.name) {
		case ("strEmail"):
			if (isEmail(objElement.value)) {
				return true;
			}
			else {
				alert("This email address is invalid. Please enter a valid email address.");
				objElement.focus();
				objElement.select();
				return false;
			}
			break;
			
		case ("strPhone"):
			if (isWhitespace(objElement.value)) {
				return true;
			}
			else if (isPhone(objElement)) {
					correctPhone(objElement);
					return true;
			}
			else {
				alert("This phone number is invalid. Please enter a valid phone number.");
				objElement.focus();
				objElement.select();
				return false;
			}
			break;
			
		case ("strDOB"):
			if (ForceDate(objElement.value)) {
				return true;
			}
			else {
				alert("This date is invalid. Please enter a valid date of birth.");
				objElement.focus();
				objElement.select();
				return false;
			}
			break;
				
		case ("strDate"):
			if (ForceDate(objElement.value)) {
				return true;
			}
			else {
				alert("This date is invalid. Please enter a valid date.");
				objElement.focus();
				objElement.select();
				return false;
			}
			break;
			
		case ("iNumber"):
			if (ForceNumber(objElement.value)) {
				return true;
			}
			else {
				alert("Please enter a valid date number.");
				objElement.focus();
				objElement.select();
				return false;
			}
			break;
	}
	
	
	if (objElement.name.search("do") > 0){
		if (ForceDate(objElement.value)) {
			return true;
		}
		else {
			alert("This date is invalid. Please enter a valid date of birth.");
			objElement.focus();
			objElement.select();
			return false;
		}

	}
	
	if (objElement.name.search("phone") > 0){
		if (isWhitespace(objElement.value)) {
			return true;
		}
		else if (isPhone(objElement)) {
				return true;
		}
		else {
			alert("This phone number is invalid. Please enter a valid phone number.");
			objElement.focus();
			objElement.select();
			return false;
		}
	}
	
}	

function validateAll(objForm) {
	for (var iCount = 0; iCount < objForm.length; iCount++) {
		var objElement = objForm.elements[iCount];
		if (validate(objElement) == false) {
			return false;
		}
	}
	if (!checkRequired(objForm)) {
		return false;
	}
	return true;
}
// -->