http://gmap.nurtext.de/documentation.html

I am using a theme that use this plugin.
Code:
$j("#map_contact").gMap({ zoom: <?php echo $pp_contact_map_zoom; ?>, markers: [ { latitude: '<?php echo $pp_contact_lat; ?>', longitude: '<?php echo $pp_contact_long; ?>' } ], mapTypeControl: false, zoomControl: false, scrollwheel: false });

I want to change the map language to anther language (not English) how can I do this?