JavaScript Experts

var map, layer, layer2, that;

function initialize() {
  var magnolia = new google.maps.LatLng(33.2669, -93.2392);

  map = new google.maps.Map(document.getElementById('map-canvas'), {
    center: magnolia,
    zoom: 9,
    mapTypeId: google.maps.MapTypeId.ROADMAP
  });

  layer = new google.maps.FusionTablesLayer({
    query: {
      select: 'geometry',
      from: '1ShXo1UPsbHgxpCJ_-pgya17THKpAQ8fxGZgYhf0'
    }
  });

  layer.setMap(map);

  layer2 = new google.maps.FusionTablesLayer({
    query: {
      select: 'geometry',
      from: '1_xr2OA7Dch2kIWpPu3Y8m9SbHUYhXuFRVVeNM-o'
    }
  });

  layer2.setMap(map);

  google.maps.event.addListener(layer,'click',function() {
    document.getElementById('that').display = "none";

google.maps.event.addDomListener(window, 'load', initialize);