var map;
function init(){
    map = new OpenLayers.Map('map');
    var osm = new OpenLayers.Layer.OSM();
    var tango = new OpenLayers.Layer.OSM("Tango", "http://osm.azae.net/tango/${z}/${x}/${y}.png", {minZoomLevel: 0, maxZoomLevel:18, numZoomLevels: 19});
    var mapquest = new OpenLayers.Layer.OSM("MapQuest", "http://otile1.mqcdn.com/tiles/1.0.0/osm/${z}/${x}/${y}.png");

/*
    var geolocate = new OpenLayers.Control.GeolocationAPI({
		       mode: 'position',
		       displayPosition: false,
		       displayAccuracy: true,
		       geolocationOptions: {timeout:3000}});
*/

    map.addLayers([ tango, osm, mapquest]);
    map.addControl(new OpenLayers.Control.LayerSwitcher());
//    map.addControl(geolocate);

    map.setCenter( new OpenLayers.LonLat(9, 45).transform(
			    new OpenLayers.Projection("EPSG:4326"),
			    map.getProjectionObject()
			    ), 4);

  //  geolocate.activate();
}