// Form Validation JavaScript

function EW_onError(form_object, input_object, object_type, error_message)
	{
	alert(error_message);
	if (object_type == "RADIO" || object_type == "CHECKBOX") {
	if (input_object[0])
	input_object[0].focus();
	else
	input_object.focus();
	}
	else
	input_object.focus();
	if (object_type == "TEXT" || object_type == "PASSWORD")
	input_object.select();	
	return false;	
	}

function EW_hasValue(obj, obj_type)
	{
	if (obj_type == "TEXT" || obj_type == "PASSWORD" || obj_type == "TEXTAREA")
	{
	if (obj.value.length == 0) 
	return false;
	else 
	return true;
	}
	else if (obj_type == "SELECT")
	{
	if (obj.selectedIndex == 0)
	return false;
	else
	return true;	
	}	
	else if (obj_type == "RADIO" || obj_type == "CHECKBOX")
	{
	if (obj[0])
	{
	for (i=0; i < obj.length; i++)
	{
	if (obj[i].checked)
	return true;
	}
	}
	else
	{
	if (obj.checked)
	return true;
	else
	return false;	
	}
	return false;	
	}
	}

// Date (mm/dd/yyyy)
function EW_checkusdate(object_value)
	{
	if (object_value.length == 0)
	return true;

	isplit = object_value.indexOf('/');

	if (isplit == -1 || isplit == object_value.length)
	return false;

	sMonth = object_value.substring(0, isplit);

	if (sMonth.length == 0)
	return false;

	isplit = object_value.indexOf('/', isplit + 1);

	if (isplit == -1 || (isplit + 1 ) == object_value.length)
	return false;

	sDay = object_value.substring((sMonth.length + 1), isplit);

	if (sDay.length == 0)
	return false;

	sYear = object_value.substring(isplit + 1);

	if (!EW_checkinteger(sMonth)) 
	return false;
	else
	if (!EW_checkrange(sMonth, 1, 12)) 
	return false;
	else
	if (!EW_checkinteger(sYear)) 
	return false;
	else
	if (!EW_checkrange(sYear, 0, 9999)) 
	return false;
	else
	if (!EW_checkinteger(sDay)) 
	return false;
	else
	if (!EW_checkday(sYear, sMonth, sDay))
	return false;
	else
	return true;
	}

// Date (yyyy/mm/dd)
function EW_checkdate(object_value)
	{
	if (object_value.length == 0)
	return true;

	isplit = object_value.indexOf('/');

	if (isplit == -1 || isplit == object_value.length)
	return false;

	sYear = object_value.substring(0, isplit);

	isplit = object_value.indexOf('/', isplit + 1);

	if (isplit == -1 || (isplit + 1 ) == object_value.length)
	return false;

	sMonth = object_value.substring((sYear.length + 1), isplit);
	
	if (sMonth.length == 0)
	return false;

	sDay = object_value.substring(isplit + 1);
	
	if (sDay.length == 0)
	return false;

	if (!EW_checkinteger(sMonth)) 
	return false;
	else
	if (!EW_checkrange(sMonth, 1, 12)) 
	return false;
	else
	if (!EW_checkinteger(sYear)) 
	return false;
	else
	if (!EW_checkrange(sYear, 0, 9999)) 
	return false;
	else
	if (!EW_checkinteger(sDay)) 
	return false;
	else
	if (!EW_checkday(sYear, sMonth, sDay))
	return false;
	else
	return true;
	}

// Date (dd/mm/yyyy)
function EW_checkeurodate(object_value)
	{
	if (object_value.length == 0)
	return true;

	isplit = object_value.indexOf('/');

	if (isplit == -1)
	{
	isplit = object_value.indexOf('.');
	}

	if (isplit == -1 || isplit == object_value.length)
	return false;

	sDay = object_value.substring(0, isplit);

	monthSplit = isplit + 1;

	isplit = object_value.indexOf('/', monthSplit);

	if (isplit == -1)
	{
	isplit = object_value.indexOf('.', monthSplit);
	}

	if (isplit == -1 ||	(isplit + 1 ) == object_value.length)
	return false;

	sMonth = object_value.substring((sDay.length + 1), isplit);

	sYear = object_value.substring(isplit + 1);

	if (!EW_checkinteger(sMonth)) 
	return false;
	else
	if (!EW_checkrange(sMonth, 1, 12)) 
	return false;
	else
	if (!EW_checkinteger(sYear)) 
	return false;
	else
	if (!EW_checkrange(sYear, 0, null)) 
	return false;
	else
	if (!EW_checkinteger(sDay)) 
	return false;
	else
	if (!EW_checkday(sYear, sMonth, sDay)) 
	return false;
	else
	return true;
	}

function EW_checkday(checkYear, checkMonth, checkDay)
	{

	maxDay = 31;

	if (checkMonth == 4 || checkMonth == 6 ||
	checkMonth == 9 || checkMonth == 11)
	maxDay = 30;
	else
	if (checkMonth == 2)
	{
	if (checkYear % 4 > 0)
	maxDay =28;
	else
	if (checkYear % 100 == 0 && checkYear % 400 > 0)
	maxDay = 28;
	else
	maxDay = 29;
	}

	return EW_checkrange(checkDay, 1, maxDay); 
	}

function EW_checkinteger(object_value)
	{
	if (object_value.length == 0)
	return true;

	var decimal_format = ".";
	var check_char;

	check_char = object_value.indexOf(decimal_format)
	if (check_char < 1)
	return EW_checknumber(object_value);
	else
	return false;
	}

function EW_numberrange(object_value, min_value, max_value)
	{
	if (min_value != null)
	{
	if (object_value < min_value)
	return false;
	}

	if (max_value != null)
	{
	if (object_value > max_value)
	return false;
	}
	
	return true;
	}

function EW_checknumber(object_value)
	{
	if (object_value.length == 0)
	return true;

	var start_format = " .+-0123456789";
	var number_format = " .0123456789";
	var check_char;
	var decimal = false;
	var trailing_blank = false;
	var digits = false;

	check_char = start_format.indexOf(object_value.charAt(0))
	if (check_char == 1)
	decimal = true;
	else if (check_char < 1)
	return false;
	
	for (var i = 1; i < object_value.length; i++)
	{
	check_char = number_format.indexOf(object_value.charAt(i))
	if (check_char < 0)
	return false;
	else if (check_char == 1)
	{
	if (decimal)
	return false;
	else
	decimal = true;
	}
	else if (check_char == 0)
	{
	if (decimal || digits)	
	trailing_blank = true;
	}
	else if (trailing_blank)
	return false;
	else
	digits = true;
	}	

	return true
	}

function EW_checkrange(object_value, min_value, max_value)
	{
	if (object_value.length == 0)
	return true;

	if (!EW_checknumber(object_value))
	{
	return false;
	}
	else
	{
	return (EW_numberrange((eval(object_value)), min_value, max_value));
	}
	
	return true;
	}

function EW_checktime(object_value)
	{
	if (object_value.length == 0)
	return true;

	isplit = object_value.indexOf(':');

	if (isplit == -1 || isplit == object_value.length)
	return false;

	sHour = object_value.substring(0, isplit);
	iminute = object_value.indexOf(':', isplit + 1);

	if (iminute == -1 || iminute == object_value.length)
	sMin = object_value.substring((sHour.length + 1));
	else
	sMin = object_value.substring((sHour.length + 1), iminute);

	if (!EW_checkinteger(sHour))
	return false;
	else
	if (!EW_checkrange(sHour, 0, 23)) 
	return false;

	if (!EW_checkinteger(sMin))
	return false;
	else
	if (!EW_checkrange(sMin, 0, 59))
	return false;

	if (iminute != -1)
	{
	sSec = object_value.substring(iminute + 1);

	if (!EW_checkinteger(sSec))
	return false;
	else
	if (!EW_checkrange(sSec, 0, 59))
	return false;	
	}
	
	return true;
	}

function EW_checkphone(object_value)
	{
	if (object_value.length == 0)
	return true;
	
	if (object_value.length != 12)
	return false;

	if (!EW_checknumber(object_value.substring(0,3)))
	return false;
	else
	if (!EW_numberrange((eval(object_value.substring(0,3))), 100, 1000))
	return false;

	if (object_value.charAt(3) != "-" && object_value.charAt(3) != " ")
	return false

	if (!EW_checknumber(object_value.substring(4,7)))
	return false;
	else
	if (!EW_numberrange((eval(object_value.substring(4,7))), 100, 1000))
	return false;
	
	if (object_value.charAt(7) != "-" && object_value.charAt(7) != " ")
	return false;

	if (object_value.charAt(8) == "-" || object_value.charAt(8) == "+")
	return false;
	else
	{
	return (EW_checkinteger(object_value.substring(8,12)));
	}
	}

function EW_checkzip(object_value)
	{
	if (object_value.length == 0)
	return true;
	
	if (object_value.length != 5 && object_value.length != 10)
	return false;

	if (object_value.charAt(0) == "-" || object_value.charAt(0) == "+")
	return false;

	if (!EW_checkinteger(object_value.substring(0,5)))
	return false;

	if (object_value.length == 5)
	return true;
	
	if (object_value.charAt(5) != "-" && object_value.charAt(5) != " ")
	return false;

	if (object_value.charAt(6) == "-" || object_value.charAt(6) == "+")
	return false;

	return (EW_checkinteger(object_value.substring(6,10)));
	}

function EW_checkcreditcard(object_value)
	{
	var white_space = " -";
	var creditcard_string="";
	var check_char;

	if (object_value.length == 0)
	return true;

	for (var i = 0; i < object_value.length; i++)
	{
	check_char = white_space.indexOf(object_value.charAt(i))
	if (check_char < 0)
	creditcard_string += object_value.substring(i, (i + 1));
	}	

	if (creditcard_string.length == 0)
	return false;	 
	 	
	if (creditcard_string.charAt(0) == "+")
	return false;

	if (!EW_checkinteger(creditcard_string))
	return false;

	var doubledigit = creditcard_string.length % 2 == 1 ? false : true;
	var checkdigit = 0;
	var tempdigit;

	for (var i = 0; i < creditcard_string.length; i++)
	{
	tempdigit = eval(creditcard_string.charAt(i))

	if (doubledigit)
	{
	tempdigit *= 2;
	checkdigit += (tempdigit % 10);

	if ((tempdigit / 10) >= 1.0)
	{
	checkdigit++;
	}

	doubledigit = false;
	}
	else
	{
	checkdigit += tempdigit;
	doubledigit = true;
	}
	}	
	return (checkdigit % 10) == 0 ? true : false;
	}

function EW_checkssc(object_value)
	{
	var white_space = " -+.";
	var ssc_string="";
	var check_char;

	if (object_value.length == 0)
	return true;

	if (object_value.length != 11)
	return false;

	if (object_value.charAt(3) != "-" && object_value.charAt(3) != " ")
	return false;

	if (object_value.charAt(6) != "-" && object_value.charAt(6) != " ")
	return false;
	 
	for (var i = 0; i < object_value.length; i++)
	{
	check_char = white_space.indexOf(object_value.charAt(i))
	if (check_char < 0)
	ssc_string += object_value.substring(i, (i + 1));
	}	

	if (ssc_string.length != 9)
	return false;	 
	 	
	if (!EW_checkinteger(ssc_string))
	return false;

	return true;
	}

function EW_checkemail(object_value)
	{
	if(!(object_value.indexOf("@") > -1 && object_value.indexOf(".") > -1))
	return false;	

	return true;
	}
	

// GUID {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}	
function EW_checkGUID(object_value)
	{
	if (object_value.length == 0)
	return true;
	if (object_value.length != 38)
	return false;
	if (object_value.charAt(0)!="{")
	return false;
	if (object_value.charAt(37)!="}")
	return false;	

	var hex_format = "0123456789abcdefABCDEF";
	var check_char;	

	for (var i = 1; i < 37; i++)
	{	
	if ((i==9)||(i==14)||(i==19)||(i==24)) {
	if (object_value.charAt(i)!="-")
	return false;
	} else {
	check_char = hex_format.indexOf(object_value.charAt(i));
	if (check_char < 0)
	return false;
	}
	}
	return true;
	}