How to add a KML from Google Map to OpenLayers2?

Question

I would like to add this KML-link from Google Maps to an OpenLayers Layer instance.

The following code is not working:

var layer = new OpenLayers.Layer.GML("KML", 
    "https://maps.google.de/maps/ms?authuser=0&  
      vps=2&hl=de&
      ie=UTF8&
      msa=0&
      output=kml&
      msid=203149634091768565111.0004cf65c9b03cc8ae76c", 
      {
        format: OpenLayers.Format.KML,
        formatOptions: {
          'extractStyles': true
        }
});

Answer 1

You should put the kml on the server and link to the file. Like this:

var layer = new OpenLayers.Layer.GML("KML", "kml/lines.kml", {
   format: OpenLayers.Format.KML
})
map.addLayer(layer);