- markers = new OpenLayers.Layer.Markers("Markers", { visibility: false, numZoomLevels: numZoomLevels });
+ markers = new OpenLayers.Layer.Markers("Markers", {
+ displayInLayerSwitcher: false, numZoomLevels: numZoomLevels,
+ maxExtent: new OpenLayers.Bounds(-20037508,-20037508,20037508,20037508),
+ maxResolution: 156543,
+ units: "m",
+ projection: "EPSG:41001"
+ });