Google Maps APIバージョン1と2の記述方法の比較
Google Maps APIバージョン1 Google Maps APIバージョン2
map11
map21
function loadMap11()
{
  var map = new GMap(document.getElementById("map11"));
  map.centerAndZoom(new GPoint(139.709336, 35.691490), 4);
}
function loadMap21()
{
  var map = new GMap2(document.getElementById("map21"));
  map.setCenter(new GLatLng(35.691490, 139.709336), 13);
}
map12
map22
function loadMap12()
{
  var map = new GMap(document.getElementById("map12"));
  map.addControl(new GSmallMapControl());
  map.addControl(new GMapTypeControl(true));
  map.centerAndZoom(new GPoint(139.709336, 35.691490), 4);
}
function loadMap22()
{
  var map = new GMap2(document.getElementById("map22"));
  map.addControl(new GSmallMapControl());
  map.addControl(new GMapTypeControl(true));
  map.setCenter(new GLatLng(35.691490, 139.709336), 13);
}
map13
map23
function loadMap13()
{
  var map = new GMap(document.getElementById("map13"));
  map.addControl(new GSmallMapControl());
  map.addControl(new GMapTypeControl(true));
  map.centerAndZoom(new GPoint(139.709336, 35.691490), 4);
  function createMarker(point,html) {
    var marker = new GMarker(point);
    GEvent.addListener(marker, "click", function() {
      marker.openInfoWindowHtml(html);
    });
    return marker;
  }
  var point = new GLatLng(35.691490, 139.709336);
  var marker = createMarker(point,'株式会社アジャスト');
  map.addOverlay(marker);
}
function loadMap23()
{
  var map = new GMap2(document.getElementById("map23"));
  map.addControl(new GSmallMapControl());
  map.addControl(new GMapTypeControl(true));
  map.setCenter(new GLatLng(35.691490, 139.709336), 13);
  function createMarker(point,html) {
    var marker = new GMarker(point);
    GEvent.addListener(marker, "click", function() {
      marker.openInfoWindowHtml(html);
    });
    return marker;
  }
  var point = new GLatLng(35.691490, 139.709336);
  var marker = createMarker(point,'株式会社アジャスト');
  map.addOverlay(marker);
}