title: Hover on FusionTablesLayer in google maps
body: <p>I have a FusionTablesLayer on my google map and it works great, but now I have to add a hover to it and I can figure out if it's possible. I've seen examples with a hover on different polygons, but I can't use this.</p>
  
  <p>My layer:</p>
  
  <pre><code>layer = new google.maps.FusionTablesLayer({
      map: map,
      suppressInfoWindows: true,
      heatmap: { enabled: false },
      query: {
          select: "col0",
          from: key,
          where: CreateQuery(shownMunicipalities)
      },
      styles: [{
          polygonOptions: {
              fillColor: '#eeeeee',
              fillOpacity: 0.5,
              strokeColor: '#000000',
              strokeOpacity: 0.2,
              strokeWeight: 2
          }
      }, {
          where: CreateQuery(activeMunicipalities),
          polygonOptions: {
              fillColor: '#00FF00',
              fillOpacity: 0.3
          }
      }],
      options: {
          styleId: 2,
          templateId: 2
      }
  });
  </code></pre>
  
  <p>I've tried add a listener of the mouseover event, but this doesn't seem to do anythin.</p>
  
  <pre><code>google.maps.event.addListener(layer, 'mouseover', function (event) {
      alert('hover');
  });
  </code></pre>
  
  <p>Am I trying to do the impossible?</p>