function validate() {

if (document.signup.firstname.value.length < 1) {
alert("Please enter your first name.");
document.signup.firstname.focus();
signup.firstname.style.backgroundColor='#21AEBD';
return false;
}

if (document.signup.surname.value.length < 1) {
alert("Please enter your surname.");
document.signup.surname.focus();
signup.surname.style.backgroundColor='#21AEBD';
return false;
}

if (document.signup.email.value.length < 1) {
alert("Please enter your email address.");
document.signup.email.focus();
signup.email.style.backgroundColor='#21AEBD';
return false;
}

if (document.signup.username.value.length < 1) {
alert("Please enter a username.");
document.signup.username.focus();
signup.username.style.backgroundColor='#21AEBD';
return false;
}

if (document.signup.password.value.length < 1) {
alert("Please enter a password.");
document.signup.password.focus();
signup.password.style.backgroundColor='#21AEBD';
return false;
}

if (document.signup.passwordconfirm.value.length < 1) {
alert("Please enter your password again.");
document.signup.passwordconfirm.focus();
signup.passwordconfirm.style.backgroundColor='#21AEBD';
return false;
}





                
return true;

}