edit
Answer here:
Move picture title and description Reply #6: http://forum.coppermine-gallery.net/index.php/topic,77287.0.html (http://forum.coppermine-gallery.net/index.php/topic,77287.0.html)
I use it on my gallery and here is a page with no description: http://allvip.us/gallery/displayimage.php?album=704&pid=32045#top_display_media (http://allvip.us/gallery/displayimage.php?album=704&pid=32045#top_display_media)
Thank you so much!
I tried without luck to find the right variable to put inside an if loop... $CURRENT_PIC_DATA['title'] is what I needed.