function centerOn() {
   placeSelect = document.forms[0].place;
   place = placeSelect.options[placeSelect.selectedIndex].value;
   switch(place) {
      case "USA": 
        map.centerAndZoom(new GPoint(-95.677068,37.0625),13);
        break;
      case "NewEngland":
        map.centerAndZoom(new GPoint(-73.399658,42.867912),10);
        break;
      case "Europe":
        map.centerAndZoom(new GPoint(11.513672,49.439557),13);
        break;
      case "France":
        map.centerAndZoom(new GPoint(2.8125,46.860191),11);
        break;
      case "PACA":
        map.centerAndZoom(new GPoint(5.125122,43.858297),9);
        break;
      case "World":
        map.centerAndZoom(new GPoint(-1.054687,31.353637),15);
        break;
      case "Brazil":
        map.centerAndZoom(new GPoint(-47.460937,-12.897489),13);
        break;
   }
   placeSelect.selectedIndex = 0;
   return false;
}