function checkForm3() {
	if (document.forms.form3.elements['email'].value.length == 0) {
		alert('Please enter a value for the "Your email address" field');
		return false;
	}
	else {
                if (document.forms.form3.elements['comments'].value.length == 0) {
                    alert('Please enter a value for the "Comments" field');
		return false;
            }
        }
  	return true;
}