[Plugin: Magic Fields] Group fields, only if exists

Hello,

Great plugin, need some help though. Im using the following code for displaying content out of a group (which can be duplicated):

<div id="omtaleboks">
<div id="omtaler-tittel"><?php echo get('omtaler_nettsted',3); ?></div>
<div id="omtaler-score"><?php echo get('omtaler_score',3); ?></div>
<div id="omtaler-tekst"><?php echo get('omtaler_tekst',3); ?></div>
<div id="omtaler-url"><a href="<?php echo get('omtaler_url',3); ?>">Read more »</a></div>
</div>

This gives me a styled box with the information I need.
I will need to have a different amount of these boxes on my site, in a amount of 1-15.
Is there any code I can use so those boxes only will display if there is added content to the id? Like, box 5-15 will be hidden if I only duplicated the group 4 times.

Hope you understood that 🙂