Google Maps v3 hide elements (roads, roadsigns, etc)

I found a code snippet on http://www.41latitude.com/post/1268734799/google-styled-maps:

[
  {
    featureType: "administrative",
    elementType: "labels",
    stylers: [
      { visibility: "off" }
    ]
  },{
    featureType: "poi",
    elementType: "labels",
    stylers: [
      { visibility: "off" }
    ]
  },{
    featureType: "water",
    elementType: "labels",
    stylers: [
      { visibility: "off" }
    ]
  },{
    featureType: "road",
    elementType: "labels",
    stylers: [
      { visibility: "off" }
    ]
  }
]

I should be able to use it in my maps, but is there somebody who can tell me how I can use this snippet? I can't find anything about it in the API of Google Maps V3.