d3 hover via cartodb sql API and mapbox.js

<!DOCTYPE html>
<html>
<head>
  <script src='https://api.tiles.mapbox.com/mapbox.js/v0.6.7/mapbox.js'></script>
  <link href='https://api.tiles.mapbox.com/mapbox.js/v0.6.7/mapbox.css' rel='stylesheet' />
  <style>
    body { margin:0; padding:0; }
    #map { position:absolute; top:0; bottom:0; width:100%; }
  </style>
</head>
<body>
<div id='map'></div>

path:hover {
    fill: brown;
    fill-opacity: .7;
  }
</style>

f.parent = div.node();

f.project = function(x) {
      var point = f.map.locationPoint({ lat: x[1], lon: x[0] });
      return [point.x, point.y];
    };

var first = true;
    f.draw = function() {
      first && svg.attr("width", f.map.dimensions.x)
          .attr("height", f.map.dimensions.y)
          .style("margin-left", "0px")
          .style("margin-top", "0px") && (first = false);

path = d3.geo.path().projection(f.project);
      feature.attr("d", path);
    };

f.data = function(x) {
        collection = x;
        bounds = d3.geo.bounds(collection);
        feature = g.selectAll("path")
            .data(collection.features)
            .enter().append("path");
        return f;
    };

f.extent = function() {
        return new MM.Extent(
            new MM.Location(bounds[0][1], bounds[0][0]),
            new MM.Location(bounds[1][1], bounds[1][0]));
    };
    return f;
}
var communes = ('https://dai.cartodb.com/api/v2/sql?q=SELECT%20*%20FROM%20ag_2011_commune3%20&format=geojson&callback=?&foo=geojsonp');

mapbox.auto('map', 'landplanner.map-pd5ea4xu,landplanner.map-lronacbg', function(map) {
    l = d3layer().data(communes);
    map.addLayer(l);
    map.extent(l.extent());
});
</script>
</body>
</html>

Modified http://api.tiles.mapbox.com/mapbox.js/v0.6.7/mapbox.js to a secure url

Modified http://d3js.org/d3.v2.min.js to a secure url

https://api.tiles.mapbox.com/mapbox.js/v0.6.7/mapbox.js

https://d3js.org/d3.v2.min.js