ti incollo pari pari la spiegazione del sito ufficieale sperando che tu legga l'inglese:
la parte che ti interessa riguarda il display mode:
{ gallery }folder_path:thumbs_width:thumbs_height:display_mode{ /gallery }
Watch out for the seperator, which is the character ":". "thumbs_width" is the target width in pixels for all thumbnails, "thumbs_height" is the target height in pixels for all thumbnails and "display_mode" is the mode in which we want our gallery to display. "display_mode" takes only 2 values, either "0" or "1". "0" means "normal mode" and "1" means "single thumbnail mode". So if for example you want to insert an image gallery in some article with thumbnails displaying in 300px width and 160px height, while keeping the "normal" display mode (showing all thumbs, not just the first one), you would insert the following tag:
{ gallery }folder/some_folder:300:160:0{ /gallery }
ora però te la faccio io una domanda.
il mio problema sempre relativo a questo plugin è che explorer (hate it) mi visualizza le thumb solo in verticale mentre mozilla le mostra correttamente in orizzontale.
vedi qui
http://www.energeo-system.com/index.php?option=com_content&task=view&id=20&Itemid=33
