function createMarker(point) {
  var marker = new GMarker(point);
  GEvent.addListener(marker, "click", function() { marker.openInfoWindowHtml(html); });
  return marker;
}

function createGmap(laGrid, longGrid) {
  var map = new GMap(document.getElementById("map"));
  map.addControl(new GSmallMapControl());
  map.addControl(new GMapTypeControl());
  var mypoint = new GPoint(laGrid, longGrid);
  map.centerAndZoom(mypoint, 2);

  html = "<div class='hdBig' id='mapLogo'>Wat Miami</div>";

  map.openInfoWindowHtml(map.getCenterLatLng(), html);

  var marker = createMarker(mypoint);
  map.addOverlay(marker);
}