//<<<********************** BEGIN IS FUNCTIONS **********************>>>
function isEmpty(field, msg) {
	if (!msg) 
		msg = 'Please fill out all required fields.';
	if (!field.value) {
		field.focus();
		DisplayOopsError(msg);
		return true;
	}
	return false;
}

function isEqual(field, fieldvalue, msg) {
	if (!msg)
		msg = 'Please fill in your date of birth.';
	if (field.value == fieldvalue || field.value == "") {
		field.focus();
		DisplayOopsError(msg);
		return true;
	}
	return false;
}

function isSelected(field, indexnumber, msg) {
	if (!msg)
		msg = "Please fill out all required fields.";
	if (field.options[indexnumber].selected) {
		field.focus();
		DisplayOopsError(msg);
		return true;
	}
	return false;
}

function isCorrectLength(field, LengthCheck, msg) {
	var fieldValue = field.value;
	if (!msg) 
		msg = "Please enter a valid phone number.";

	if (fieldValue.length != LengthCheck) {
		field.focus();
		DisplayOopsError(msg);
		return false;
	} 
	return true;
}

function isMinLength(field, LengthCheck, msg) {
	var fieldValue = field.value;
	if (!msg) 
		msg = "Please enter a valid zip code." ;

	if (fieldValue.length < LengthCheck) {
		field.focus();
		DisplayOopsError(msg);
		field.select();
		return false;
	}
	return true;
}

function isEmail(field, msg) {
	var email = field.value;
	var HowManyAt = 0;
	var HowManyPer = 0;
	var LastPer;
	var LastStr;

	if (!msg) 
		msg = "Please enter a valid email address. ex: username@yourprovider.com or enter none if you do not have an email address.";

	// Checks to see if "none" was entered and returns true
	if(email.toUpperCase() == "NONE") return true;

	for (var i = 0; i < email.length;  i++) {
		var thisChar = email.substring(i, i + 1)
		if (thisChar == "@") HowManyAt++;
	}
	// Checks to make sure there is at least one "@" and no more.
	if (HowManyAt != 1) {
		field.focus();
		DisplayOopsError(msg);
		return false;
	}

	// Checks to make sure that the first character is not the "@"
	var AtIndex = email.indexOf("@");
	if (AtIndex == 0) {
		field.focus();
		DisplayOopsError(msg);
		return false;
	}

	// Checks to make sure there is at least one "."
	for (var j = AtIndex; j < email.length; j++) {
		var thisChar2 = email.substring(j, j + 1);
		if (thisChar2 == ".") {
			HowManyPer++;
			LastPer = j;
		}
	}
	if (HowManyPer == 0) {
		field.focus();
		DisplayOopsError(msg);
		return false;
	}
	// Checks to make sure that there are only 2 or 3 digits after the last period.
	LastStr = email.substring(LastPer + 1, email.length + 1);
	if (LastStr.length != 2 && LastStr.length != 3) {
		field.focus();
		DisplayOopsError(msg);
		return false;
	}

	// Email is valid   
	return true;
}

function isNumber(inputStr1, msg) {
	var flagIsNumber = true;
	if (!msg) 
		msg = "You must enter numeric characters only in the selected field.";

	inputStr = inputStr1.value;
	for (var i = 0; i < inputStr.length; i++) {
		var oneChar = inputStr.substring(i, i + 1);
		if (oneChar < "0" || oneChar > "9") {
			flagIsNumber = false;
		}
	}
	if (flagIsNumber == false) {
		inputStr1.focus();
		DisplayOopsError(msg);
		inputStr1.select();
		return false;
	}
	inputStr1.value = inputStr1.value;
	return true;
}
//<<<********************** END IS FUNCTIONS **********************>>>




//<<<********************** BEGIN DATE FUNCTIONS **********************>>>
function isDate(objName, msg) {
	var datefield = objName;
	if (!msg) msg = "That date is invalid.  Please try again.";
	if (chkdate(objName) == false) {
		datefield.select();
		alert(msg);
		datefield.focus();
		return false;
	} else {
		return true;
	}
}

function chkdate(objName) {
	var strDatestyle = "US"; //United States date style
	var strDate;
	var strDateArray;
	var strDay;
	var strMonth;
	var strYear;
	var intday;
	var intMonth;
	var intYear;
	var booFound = false;
	var datefield = objName;
	var strSeparatorArray = new Array("-"," ","/",".");
	var intElementNr;
	var err = 0;
	var thisDate = new Date();
	var strMonthArray = new Array(12);
	strMonthArray[0] = "01/";
	strMonthArray[1] = "02/";
	strMonthArray[2] = "03/";
	strMonthArray[3] = "04/";
	strMonthArray[4] = "05/";
	strMonthArray[5] = "06/";
	strMonthArray[6] = "07/";
	strMonthArray[7] = "08/";
	strMonthArray[8] = "09/";
	strMonthArray[9] = "10/";
	strMonthArray[10] = "11/";
	strMonthArray[11] = "12/";
	strDate = datefield.value;

	if (strDate.length < 1) {
		return true;
	}
	for (intElementNr = 0; intElementNr < strSeparatorArray.length; intElementNr++) {
		if (strDate.indexOf(strSeparatorArray[intElementNr]) != -1) {
			strDateArray = strDate.split(strSeparatorArray[intElementNr]);
			if (strDateArray.length != 3) {
				err = 1;
				return false;
			} else {
				strDay = strDateArray[0];
				strMonth = strDateArray[1];
				strYear = strDateArray[2];
			}
			booFound = true;
		}
	}
	if (booFound == false) {
		if (strDate.length>5) {
			strDay = strDate.substr(0, 2);
			strMonth = strDate.substr(2, 2);
			strYear = strDate.substr(4);
		}
	}
	if (strDatestyle == "US") {
		strTemp = strDay;
		strDay = strMonth;
		strMonth = strTemp;
	}
	intday = parseInt(strDay, 10);
	if (isNaN(intday)) {
		err = 2;
		return false;
	}
	intMonth = parseInt(strMonth, 10);
	if (isNaN(intMonth)) {
		for (i = 0;i<12;i++) {
			if (strMonth.toUpperCase() == strMonthArray[i].toUpperCase()) {
				intMonth = i+1;
				strMonth = strMonthArray[i];
				i = 12;
			}
		}
		if (isNaN(intMonth)) {
			err = 3;
			return false;
		}
	}
	intYear = parseInt(strYear, 10);
	if (isNaN(intYear)) {
		err = 4;
		return false;
	}else{
		if(intYear < 1890)
			return false;
		if(intYear > thisDate.getFullYear())
			return false;
	}
	var theirDate = new Date();
	theirDate.setMonth(intMonth - 1);
	theirDate.setDate(intday);
	theirDate.setYear(intYear);
	if(theirDate.valueOf() > thisDate.valueOf()){
		return false;
	}
	if (intMonth > 12 || intMonth < 1) {
		err = 5;
		return false;
	}
	if ((intMonth == 1 || intMonth == 3 || intMonth == 5 || intMonth == 7 || intMonth == 8 || intMonth == 10 || intMonth == 12) && (intday > 31 || intday < 1)) {
		err = 6;
		return false;
	}
	if ((intMonth == 4 || intMonth == 6 || intMonth == 9 || intMonth == 11) && (intday > 30 || intday < 1)) {
		err = 7;
		return false;
	}
	if (intMonth == 2) {
		if (intday < 1) {
			err = 8;
			return false;
		}
		if (LeapYear(intYear) == true) {
			if (intday > 29) {
				err = 9;
				return false;
			}
		} else {
			if (intday > 28) {
				err = 10;
				return false;
			}
		}
	}
	if (strDatestyle == "US") {
		datefield.value = strMonthArray[intMonth - 1]  + intday + "/" + strYear;
	} else {
		datefield.value = intday + " " + strMonthArray[intMonth - 1] + " " + strYear;
	}
	return true;
}

function LeapYear(intYear) {
	if (intYear % 100 == 0) {
		if (intYear % 400 == 0) { return true; }
	} else {
		if ((intYear % 4) == 0) { return true; }
	}
	return false;
}
//<<<********************** END DATE FUNCTIONS **********************>>>

function DisplayOopsError(err) {
	alert(err);
}