function registrationValid()
{
	var message = "Please enter a value for ";

	var fn = document.forms['register'].firstName.value;
	var ln = document.forms['register'].lastName.value;
	var dd = document.forms['register'].DDtel.value;
	var email = document.forms['register'].email.value;
	var org = document.forms['register'].orgname.value;
	var pc = document.forms['register'].postcode.value;

	if (fn == "")	
	{
		alert(message + "first name.");
		return false;
	}
	if (ln == "")
	{
		alert(message + "last name.");
		return false;
	}
	if (dd == "")
	{
		alert(message + "direct dial.");
		return false;
	}
	if (email == "")	
	{
		alert(message + "email.");
		return false;
	}
	if (org == "")
	{
		alert(message + "organisation name.");
		return false;
	}
	if (pc == "")
	{
		alert(message + "postcode.");
		return false;
	}
	return true;
}