function validEmail(formField1,formField2,fieldLabel,required){
	var result = true;
	
	if (required && !validRequired(formField1,fieldLabel))
		result = false;

	if (result && ((formField1.value.length < 3) || !isEmailAddr(formField1.value)) )
	{
		alert("Please enter a complete email address in the form: yourname@yourdomain.com");
		formField1.focus();
		result = false;
	}
	
	if (formField1.value != formField2.value) {
		alert('The two email addresses you entered are not the same.');
		formField1.focus();
		result = false;
	}

  return result;
}


function validPassword(formField1,formField2,fieldLabel,required){
	var result = true;
	
	if (required && !validRequired(formField1,fieldLabel)) {
		result = false;
	}

	if (result && (formField1.value.length < 7)) {
		alert("Please enter a password with at least 7 characters");
		formField1.focus();
		result = false;
	}
	
	if (formField1.value != formField2.value) {
		alert('The two passwords you have entered are not the same.');
		formField1.focus();
		result = false;
	}

  return result;
}


function validEmailSingle(formField1,fieldLabel,required)
{
	var result = true;
	
	if (required && !validRequired(formField1,fieldLabel))
		result = false;

	if (result && ((formField1.value.length < 3) || !isEmailAddr(formField1.value)) )
	{
		alert("Please enter a complete email address in the form: yourname@yourdomain.com");
		formField1.focus();
		result = false;
	}

  return result;

}


function isEmailAddr(email) {
  var result = false;
  var theStr = new String(email);
  var index = theStr.indexOf("@");
  if (index > 0) {
    var pindex = theStr.indexOf(".",index);
    if ((pindex > index+1) && (theStr.length > pindex+1))
	result = true;
  }
  return result;
}


function validRequired(formField,fieldLabel)  {
	var result = true;
	if (formField.value == "") {
		alert('Please enter a value for the "' + fieldLabel +'" field.');
		formField.focus();
		result = false;
	}
	return result;
}



function validRequiredC(formField,fieldLabel){
	var result = true;
	if (formField.value == "") {
		alert('Please select a country from the dropdown menu at the top of the page.');
		formField.focus();
		result = false;
	}
	return result;
}




function allDigits(str) {
	return inValidCharSet(str,"0123456789");
}



function inValidCharSet(str,charset) {
	var result = true;
	// Note: doesn't use regular expressions to avoid early Mac browser bugs	
	for (var i=0;i<str.length;i++)
		if (charset.indexOf(str.substr(i,1))<0) {
			result = false;
			break;
		}
	return result;
}





function validNum(formField,fieldLabel,required)
{
	var result = true;

	if (required && !validRequired(formField,fieldLabel))
		result = false;
  
 	if (result)
 	{
 		if (!allDigits(formField.value))
 		{
 			alert('Please enter a number for the "' + fieldLabel +'" field.');
			formField.focus();		
			result = false;
		}
	} 
	
	return result;
}


function validInt(formField,fieldLabel)
{
	var result = true;

	if (!validRequired(formField,fieldLabel))
		result = false;
  
 	if (result)
 	{
 		var num = parseInt(formField.value,10);
 		if (isNaN(num))
 		{
 			alert('Please enter a number for the "' + fieldLabel +'" field.');
			formField.focus();		
			result = false;
		}
	} 
	return result;
}






// Validate all the different forms



function validateCreateAccount() {
	if (!validRequired(document.accountdetails.firstname,"Firstname"))
		return false;
	if (!validRequired(document.accountdetails.surname,"Surname"))
		return false;
	if (!validEmailSingle(document.accountdetails.email,"Email"))
		return false;
	if (!validPassword(document.accountdetails.password,document.accountdetails.password2, "Password"))
		return false;
		
	if (!validRequired(document.accountdetails.addressa_ship,"Address 1"))
		return false;
	if (!validRequired(document.accountdetails.town_ship,"Town"))
		return false;
	if (!validRequired(document.accountdetails.postcode_ship,"Postcode"))
		return false;
	if (!validRequired(document.accountdetails.country_ship,"Country"))
		return false;
	
	if (document.accountdetails.bill_same[1].checked){
		if (!validRequired(document.accountdetails.addressa_bill,"Address 1 (Billing)"))
			return false;
		if (!validRequired(document.accountdetails.town_bill,"Town (Billing)"))
			return false;
		if (!validRequired(document.accountdetails.postcode_bill,"Postcode (Billing)"))
			return false;
		if (!validRequired(document.accountdetails.country_bill,"Country (Billing)"))
			return false;
	}
	document.accountdetails.submit();
}


function validateFeedback() {
	if (!validRequired(document.feedback.fullname,"Name"))
		return false;
	if (!validEmailSingle(document.feedback.email,"Email"))
		return false;
		
	if (document.feedback.comment.value == "" && document.feedback.record1.value == "") {
		alert("Please leave either a comment or suggest at least one record.");
		return false;
	}
	document.feedback.submit();
}



function validateEditAccount() {
	if (!validRequired(document.editdetails.addressa_ship,"Address 1"))
		return false;
	if (!validRequired(document.editdetails.town_ship,"Town"))
		return false;
	if (!validRequired(document.editdetails.postcode_ship,"Postcode"))
		return false;
	if (!validRequired(document.editdetails.country_ship,"Country"))
		return false;
	
	if (document.editdetails.bill_same[1].checked){
		if (!validRequired(document.editdetails.addressa_bill,"Address 1 (Billing)"))
			return false;
		if (!validRequired(document.editdetails.town_bill,"Town (Billing)"))
			return false;
		if (!validRequired(document.editdetails.postcode_bill,"Postcode (Billing)"))
			return false;
		if (!validRequired(document.editdetails.country_bill,"Country (Billing)"))
			return false;
	}
	document.editdetails.submit();
}

function validateChangePassword() {
	if (!validRequired(document.changepassword.oldpassword,"Old Password"))
		return false;
	if (!validPassword(document.changepassword.password,document.changepassword.password2, "New Password"))
		return false;
	document.changepassword.submit();
}


function validateChangeEmail() {
	if (!validEmailSingle(document.changeemail.email,"Email"))
		return false;
	if (!validRequired(document.changeemail.password,"Password"))
		return false;
	document.changeemail.submit();
}


function validateLogin() {
	if (!validEmailSingle(document.login.username,"Email"))
		return false;
	if (!validRequired(document.login.password,"Password"))
		return false;
	document.login.submit();
}


function validateReminder() {
	if (!validEmailSingle(document.reminder.username,"Email"))
		return false;
	document.reminder.submit();
}