chartkor

Hi, I am completely new to php I have a following php script running contact form for me <?php $field_name = $_POST['cf_name']; $field_email = $_POST['cf_email']; $field_postalcode = $_POST['cf_postalcode']; $field_telephone = $_POST['cf_telephone']; $field_size = $_POST['cf_size']; $field_bedrooms = $_POST['cf_bedrooms']; $field_bathrooms = $_POST['cf_bathrooms']; $field_startdate = $_POST['cf_startdate']; $field_cats = $_POST['cf_cats']; $field_dogs = $_POST['cf_dogs']; $field_starttime = $_POST['cf_start']; $field_estimate = $_POST['cf_estimate']; $field_service = $_POST['cf_service']; $field_frequency = $_POST['cf_frequency']; $field_message = $_POST['cf_message']; $mail_to = '[email protected]'; $subject = 'Customer '.$field_name; $body_message .= 'From: '.$field_name."\n"; $body_message .= 'E-mail: '.$field_email."\n"; $body_message .= 'Postal Code: '.$field_postalcode."\n"; $body_message .= 'Telephone: '.$field_telephone."\n"; $body_message .= 'Size:' .$field_size."\n"; $body_message .= 'Bedrooms:' .$field_bedrooms."\n"; $body_message .= 'Bathrooms:' .$field_bathrooms."\n"; $body_message .= 'Start date:' .$field_startdate."\n"; $body_message .= 'Cats:' .$field_cats."\n"; $body_message .= 'Dogs:' .$field_dogs."\n"; $body_message .= 'Start time:' .$field_starttime."\n"; $body_message .= 'Estimate:' .$field_estimate."\n"; $body_message .= 'Service Type: '.$field_service."\n"; $body_message .= 'Cleaning Frequency: '.$field_frequency."\n"; $body_message .= 'Message: '.$field_message; $headers = 'From: '.$field_email."\r\n"; $headers .= 'Reply-To: '.$field_email."\r\n"; $mail_status = mail($mail_to, $subject, $body_message, $headers); if ($mail_status) { ?> <script language="javascript" type="text/javascript"> alert('Thank you for the message. We will contact you shortly.'); window.location = 'bookonline.html'; </script> <?php } else { ?> <script language="javascript" type="text/javascript"> alert('Message failed. Please, send an email to [email protected]'); window.location = 'bookonline.html'; </script> <?php } ?> Now, I'd like to make some of the fields mandatory, what should I do? Is that going to be seperate script, or just addon to the existing one? Thanks in advance