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 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 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;
}



function validateEmail(theForm) {
	if (!validRequired(theForm.name,"Name"))
		return false;
	if (!validEmailSingle(theForm.email,"Email"))
		return false;
	return true;
}