[OpenLayers-Dev] Panning is disabled when viewing Googe Layers

[Malte]

Hi everybody,
I've got a problem when switching from OSM Mapnik to a Google Layer. If
Mapnik is activated panning and zooming works like a charm. But when I
switch to Google Layer only zooming works. Can somebody give me a hint, how
to solve this problem? Is the VectorLayer the cause?

function init() {
	map = new OpenLayers.Map ("map", {
	controls:[
		new OpenLayers.Control.Navigation(),
		new OpenLayers.Control.PanZoomBar(),
		new OpenLayers.Control.Attribution(),
		new OpenLayers.Control.LayerSwitcher()],
		maxExtent: new OpenLayers.Bounds(8.112,49.9312, 8.3262, 50.0942),
		maxResolution: 156543.0399,
		numZoomLevels: 19,
		units: 'm',
		projection: new OpenLayers.Projection("EPSG:900913"),
		displayProjection: new OpenLayers.Projection("EPSG:4326")
	} );
			  
	vectorLayer = new OpenLayers.Layer.Vector(
		"POIs",
		{
			styleMap: new OpenLayers.StyleMap({
				// Set the external graphic and background graphic images.
				externalGraphic: "http://openlayers.org/dev/img/marker-gold.png",
				backgroundGraphic:
"http://openlayers.org/dev/examples/marker_shadow.png",
				
				// Makes sure the background graphic is placed correctly relative
				// to the external graphic.
				backgroundXOffset: 0,
				backgroundYOffset: -7,
				
				// Set the z-indexes of both graphics to make sure the background
				// graphics stay in the background (shadows on top of markers looks
				// odd; let's not do that).
				graphicZIndex: MARKER_Z_INDEX,
				backgroundGraphicZIndex: SHADOW_Z_INDEX,
				
				pointRadius: 10
			}),
			isBaseLayer: false,
			rendererOptions: {yOrdering: true}
		}
	)
	var layerMapnik = new OpenLayers.Layer.OSM.Mapnik("Mapnik");
	var layerTilesAtHome = new OpenLayers.Layer.OSM.Osmarender("Osmarender");
	var layerMapnik = new OpenLayers.Layer.OSM.Mapnik("Mapnik");
	var cycleattrib = 'OpenCycleMap.org - the  http://www.openstreetmap.org
OpenStreetMap  Cycle Map<br />'
		   + ' http://www.gravitystorm.co.uk/shine/cycle-info/ Key and More Info 
| Help | Stuff<br />'
		   + 'Created by  http://www.gravitystorm.co.uk Andy Allan  and Dave
Stubbs<br />'
		   + 'Sponsored by  http://www.cloudmade.com CloudMade  <br />';			 
	var gphy = new OpenLayers.Layer.Google("Google Physical",{type:
G_PHYSICAL_MAP, sphericalMercator: true });
	var gmap = new OpenLayers.Layer.Google("Google Streets",{
sphericalMercator: true });
	var ghyb = new OpenLayers.Layer.Google("Google Hybrid",{type: G_HYBRID_MAP,
sphericalMercator: true });
	var gsat = new OpenLayers.Layer.Google("Google Satellite",{type:
G_SATELLITE_MAP, sphericalMercator: true });
	map.addLayers([layerMapnik, layerTilesAtHome, gphy, gmap, ghyb, gsat,
vectorLayer]);
	
	var sf = new OpenLayers.Control.SelectFeature(vectorLayer, {'onSelect':
popup});
    map.addControl(sf);
    sf.activate();
				
	map.zoomToMaxExtent();
	
	var lonLat = new OpenLayers.LonLat(lon, lat).transform(new
OpenLayers.Projection("EPSG:4326"), map.getProjectionObject());
	map.setCenter (lonLat, zoom);
} 

Greetings,
Malte
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