var formatNumber = /^\d+$/;							// A number contains only digits

var formatHouseNumber = /^\d+$/;					// HouseNumber format starts with a digit

var formatPostalCode = /^(\d{4})\s*([a-z]{2})$/i;	// PostalCode format is 4 digits, possibly some blanks, and 2 letters

var formatEmail = /^[^@\s]+\@[^@\s]+\.[^@\s]+/;		// E-mail is x@x.x

var formatPhone = /^\d{2,4}[ -]{0,1}\d{6,8}$/;		// A phonenumber is formated nn-nnnnnnnn or nnn-nnnnnnn or nnnn-nnnnnn

var formatDate = /^([0-3]{1}[0-9]{1})(\/|-)([0-1]{1}\d{1})(\/|-)([1]{1}[9]{1}\d{2})$/;	// A date is formated dd/mm/jjjj (or dd-mm-jjjj) with only digits

var formatBodyWeight = /^\d{1,3}[,.]{0,1}\d{0,2}$/;				// lichaamslengte bestaat uit 1 en 2 digits gescheiden door een . of ,



function textboxFilled(Field) {

	var value = Field.value;

	if (value == "") {

		//alert(errorMessage);

		//Field.focus();

		return false;

	}

	return true;

}



function radioChecked(radioGroup, errorMessage) {

	var i;

	for (i = 0; i < radioGroup.length; i++) {

		if (radioGroup[i].checked) {

			radioGroup[i].focus;

			return true;

		}

	}

	//alert(errorMessage);

	return false;

}



function checkboxChecked(checkboxGroup, errorMessage) {

	if(checkboxGroup.checked) {

		return true;

	}

	return radioChecked(checkboxGroup, errorMessage);

}



function isNumber(numberField, errorMessage) {

	var value = numberField.value;

	if (! formatNumber.test(value)) {

		//alert(errorMessage);

		return false;

	}

	return true;

}



function isLength(numberField, length) {

	var value = numberField.value;

	if (value.length < length) {

		//alert(errorMessage);

		return false;

	}	

	return true;

}



function selectboxFilled(Field) {

	var value = Field.selectedIndex;

	if (value =="") {

		//alert(errorMessage);

		return false;

	}

	return true;

}



function isValid(Field, format) {

	var value = Field.value;

	if (! format.test(value)) {

		//alert(errorMessage);

		//Field.focus();

		return false;

	}

	return true;

}



function isValidOrEmpty(Field, format, errorMessage) {

	var value = Field.value;

	if (value == "") {

		return true;

	}

	if (!format.test(value)) {

		//alert(errorMessage);

		Field.focus();

		return false;

	}

	return true;

}



function oneOfTwoFilled(Field1, Field2, errorMessage) {

	var value1 = Field1.value;

	var value2 = Field2.value;

	if (value1 == "" && value2 == "") {

		//alert(errorMessage);

		Field1.focus();

		return false;

	}

	return true;

}



function PasswordCheck(field, field2) {

	if (field.value == field2.value) {

		return true;

	}else{

	return false;

	}

}



function CheckForm(naam){

	

}