day   = '05';
month = '06';
year  = '2010';

var last_update = 'last update: ' + year + '/' + month + '/' + day;
last_update_de  = 'letzte Änderung: ' + day + '.' + month + '.' + year;

if (my_locale == "de")
{
  last_update = last_update_de;
}