function validate(thisForm) {
with (thisForm) {
var alertMessage = "Please specify:\n";

if (first_name.value == "") alertMessage += "\nFirst Name";
if (surname.value == "") alertMessage += "\nSurname";
if (city.value == "") alertMessage += "\nCity";
if (county.value == "") alertMessage += "\nCounty";
if (country.value == "") alertMessage += "\nCountry";
if (email_address.value == "") alertMessage += "\nEmail Address";
if (username.value == "") alertMessage += "\nUsername";
if (password.value == "") alertMessage += "\nPassword";
if (terms.checked == "") alertMessage += "\nTerms";
if (code.value == "") alertMessage += "\nSecurity Code";
if (alertMessage != "Please specify:\n") {
alert(alertMessage);
return false;
} else return true;
} }