// general purpose function to see if an input value has been entered at all.
function isEmpty() {
	inputStr = gField.value
	if (inputStr == null || inputStr == "") {
		alert( "Veuillez remplir le champ : " + gFieldLabel )
		return true
	}
	return false
}

// general purpose function to see if no input value has been entered at all.
function isNotEmpty() {
	inputStr = gField.value
	if (inputStr != null && inputStr != "") {
		return true
	}
	alert( "Veuillez remplir le champ : " + gFieldLabel )
	return false
}

// general purpose function to see if no input value has been selected at all.
function isNotEmptySelection() {
	if ( gField.selectedIndex == -1 ) {
		alert( "Veuillez s\u00E9lectionner une valeur : " + gFieldLabel )
		return false
	}
	return true
}

// general purpose function to see if a suspected numeric input is a positive or negative integer.
function isInteger() {
	inputVal = gField.value
	inputStr = inputVal.toString()
	for (var i = 0; i < inputStr.length; i++) {
		var oneChar = inputStr.charAt(i)
		if (i == 0 && oneChar == "-") {
			continue
		}
		if (oneChar < "0" || oneChar > "9") {
			alert( "Veuillez saisir une nombre entier : " + gFieldLabel )
			return false
		}
	}
	return true
}

// general purpose function to see if a suspected numeric input
// is a positive integer
function isPositiveInteger() {
	inputVal = gField.value
	inputStr = inputVal.toString()
	for (var i = 0; i < inputStr.length; i++) {
		var oneChar = inputStr.charAt(i)
		if (oneChar < "0" || oneChar > "9") {
			alert( "Veuillez saisir un nombre entier positif : " + gFieldLabel )
			return false
		}
	}
	return true
}

// integer between 100 and 999.
function is3Integer() {
	inputVal = gField.value
	inputStr = inputVal.toString()
	for (var i = 0; i < inputStr.length; i++) {
		var oneChar = inputStr.charAt(i)
		if (oneChar < "0" || oneChar > "9") {
			alert( "Veuillez saisir un nombre entier : " + gFieldLabel )
			return false
		}
	}
	if ( i != 3 && i != 0 ) {
		alert( "Veuillez saisir un nombre entier entre 100 et 999 : " + gFieldLabel )
		return false
	}
	return true
}

// 1 number integer.
function is1Integer() {
	inputVal = gField.value
	inputStr = inputVal.toString()
	for (var i = 0; i < inputStr.length; i++) {
		var oneChar = inputStr.charAt(i)
		if (oneChar < "0" || oneChar > "9") {
			alert( "Veuillez saisir un nombre entier : " + gFieldLabel )
			return false
		}
	}
	if ( i != 1 && i != 0 ) {
		alert( "Veuillez saisir un nombre entier entre 0 et 9 : " + gFieldLabel )
		return false
	}
	return true
}

// 4 number integer.
function is4Integer() {
	inputVal = gField.value
	inputStr = inputVal.toString()
	for (var i = 0; i < inputStr.length; i++) {
		var oneChar = inputStr.charAt(i)
		if (oneChar < "0" || oneChar > "9") {
			alert( "Veuillez saisir un nombre entier : " )		
			return false
		}
	}
	if ( i != 4 && i != 0) {
		alert( "Veuillez saisir un nombre entier entre 0000 et 9999 : " + gFieldLabel )
		return false
	}
	return true
}

// integer between 0 and 40.
function isInteger0To40() {
	inputVal = gField.value
	inputStr = inputVal.toString()
	for (var i = 0; i < inputStr.length; i++) {
		var oneChar = inputStr.charAt(i)
		if (i == 0 && oneChar == "-") {
			continue
		}
		if (oneChar < "0" || oneChar > "9") {
			alert( "Veuillez saisir un nombre entier : " + gFieldLabel )
			return false
		}
	}
	if ( inputVal < 0 || inputVal > 40 ) {
		alert( "Veuillez saisir un nombre entier entre 0 et 40 : " + gFieldLabel )
		return false
	}
	return true
}

// general purpose function to see if a suspected numeric input
// is a positive or negative number
function isNumber() {
	inputVal = gField.value
	oneDecimal = false
	inputStr = inputVal.toString()
	for (var i = 0; i < inputStr.length; i++) {
		var oneChar = inputStr.charAt(i)
		if (i == 0 && oneChar == "-") {
			continue
		}
		if (oneChar == "." && !oneDecimal) {
			oneDecimal = true
			continue
		}
		if (oneChar < "0" || oneChar > "9") {
			alert( "Veuillez saisir un nombre : " + gFieldLabel )
			return false
		}
	}
	return true
}

// general purpose function to see if a suspected numeric input
// is a positive number
function isPositiveNumber() {
	inputVal = gField.value
	oneDecimal = false
	inputStr = inputVal.toString()
	for (var i = 0; i < inputStr.length; i++) {
		var oneChar = inputStr.charAt(i)
		if (oneChar == "," && !oneDecimal) {
			oneDecimal = true
			continue
		}
		if (oneChar < "0" || oneChar > "9") {
			alert( "Veuillez saisir un nombre positif : " + gFieldLabel )
			return false
		}
	}
	return true
}

// general purpose function to see if a suspected numeric input is a positive currency.
function isPositiveCurrency() {
	inputVal = gField.value
	oneSymbol = false
	oneDecimal = false
	inputStr = inputVal.toString()
	for (var i = 0; i < inputStr.length; i++) {
		var oneChar = inputStr.charAt(i)
		if ( i == inputStr.length - 2 && oneChar == " " ) {
			continue
		}
		if (oneChar == "\u20AC" && !oneSymbol) {
			oneSymbol = true
			continue
		}
		if ( oneChar == "." ) {
			continue
		}
		if (oneChar == "," && !oneDecimal) {
			oneDecimal = true
			continue
		}
		if (oneChar < "0" || oneChar > "9") {
			alert( "Veuillez saisir un nombre positif : " + gFieldLabel )
			return false
		}
	}
	return true
}

// Percentage. Positive number between 0 and 1.
function isPositivePercentage() {
	inputVal = gField.value
	oneDecimal = false
	inputStr = inputVal.toString()
	for (var i = 0; i < inputStr.length; i++) {
		var oneChar = inputStr.charAt(i)
		if (i == 0 && oneChar == "-") {
			alert( "Veuillez saisir un nombre positif : " + gFieldLabel )
			return false
		}
		if (oneChar == "," && !oneDecimal) {
			oneDecimal = true
			continue
		}
		if ( ( oneChar < "0" || oneChar > "9" ) ) {
			alert( "Veuillez saisir un nombre : " + gFieldLabel )
			return false
		}
		if ( i == 0 && oneChar > 1 ) {
			alert( "Veuillez saisir un nombre entre 0 et 1 : " + gFieldLabel )
			return false
		}

	}
	return true
}

/*
   Begin validation dispatching mechanism
*/
function dispatcher(validationFunc) {
   this.doValidate = validationFunc
}
var dispatchLookup = new Array()
dispatchLookup["isEmpty"] = new dispatcher(isEmpty)
dispatchLookup["isNotEmpty"] = new dispatcher(isNotEmpty)
dispatchLookup["isNotEmptySelection"] = new dispatcher(isNotEmptySelection)
dispatchLookup["isInteger"] = new dispatcher(isInteger)
dispatchLookup["isPositiveInteger"] = new dispatcher(isPositiveInteger)
dispatchLookup["is1Integer"] = new dispatcher(is1Integer)
dispatchLookup["is3Integer"] = new dispatcher(is3Integer)
dispatchLookup["is4Integer"] = new dispatcher(is4Integer)
dispatchLookup["isInteger0To40"] = new dispatcher(isInteger0To40)
dispatchLookup["isNumber"] = new dispatcher(isNumber)
dispatchLookup["isPositiveNumber"] = new dispatcher(isPositiveNumber)
dispatchLookup["isPositiveCurrency"] = new dispatcher(isPositiveCurrency)
dispatchLookup["isPositivePercentage"] = new dispatcher(isPositivePercentage)

// main validation function called by form event handlers
function validate(frame, field, fieldFocus, fieldLabel, method) {
	gFrame = frame
	gField =  field
	gFieldFocus =  fieldFocus
	gFieldLabel = fieldLabel
	var args = validate.arguments
	for (i = 4; i < args.length; i++) {
		if (!dispatchLookup[args[i]].doValidate()) {
			gFieldFocus.focus()
			gFieldFocus.select()
			return false
		}
	}
	return true
}

//function checkForm( form ) {
//	if ( parent.validate( window, form.input, 'isNotEmpty', 'isNumber' ) ) {
//		if ( parent.validate( window, form.test, 'isNumber' ) ) {
//			return true
//		}			
//	}
//	return false
//}