OSM Roads Grayscale


I would like to set the map type OSM Roads Grayscale in my script, how can I do? :roll_eyes:

function init(){
epsg4326 = new OpenLayers.Projection("EPSG:4326")
                map = new OpenLayers.Map("map", {displayProjection:epsg4326,
				controls: [
                new OpenLayers.Control.Navigation(),
new OpenLayers.Control.MousePosition(),
                new OpenLayers.Control.LayerSwitcher()
	layerMapnik = new OpenLayers.Layer.OSM.Mapnik("Mapnik");   



Do you already know the exact tile server and its URL for those tiles, or are you looking for suchg a source in general?

Where have you seen those grayscale tiles?