function CheckData(form) {
	var pass = true;
	
	if (pass) {
		pass = TextBox(form.firstname, 'Please enter your first name.');
	}
	if (pass) {
		pass = TextBox(form.surname, 'Please enter your surname.');
	}
	if (pass) {
		pass = Email(form.email, 'Please enter a valid email address.');
	}
	if (pass) {
		pass = TextBox(form.comments, 'Please enter a comment/enquiry.');
	}
	if (pass) {
		form.submit();
	}
}