Guguel + Castastro in Spain WMS with Open Layers

<!DOCTYPE html>
<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <link rel="stylesheet" href="http://openlayers.org/dev/theme/default/style.css" type="text/css">
    <link rel="stylesheet" href="http://openlayers.org/dev/examples/style.css" type="text/css">
    <script src="http://openlayers.org/dev/OpenLayers.js" type="text/javascript"></script>

    <!-- es el de openlayers dev pero hoygan, por un momentin... -->
    <script src='http://maps.google.com/maps?file=api&amp;v=2&amp;key=ABQIAAAAjpkAC9ePGem0lIq5XcMiuhR_wWLPFku8Ix9i2SXYRVK3e45q1BQUd_beF8dtzKET_EteAjPdGDwqpQ'></script>

    <script type="text/javascript">
        var map;
        function init(){
          map = new OpenLayers.Map('map');
          map.addLayer(new OpenLayers.Layer.Google("Guguel",{type: G_PHYSICAL_MAP}));
          map.addLayer( new OpenLayers.Layer.WMS(
            "WMS Catastro",
            "http://ovc.catastro.meh.es/Cartografia/WMS/ServidorWMS.aspx",
            {
              layers: "catastro",
              format:"image/png",
              transparent: true
            },
            {
              singleTile:true,
              isBaseLayer: false,
              reproject: true //you'll love OL because of this
            }));

          map.setCenter(new OpenLayers.LonLat(-2, 39), 5);
          map.addControl(new OpenLayers.Control.LayerSwitcher());
          map.addControl(new OpenLayers.Control.MousePosition());
        }
    </script>
  </head>
  <body onload="init()">
    <div id="map" class="smallmap"></div>
  </body>
</html>