Miscellany

		map = new OpenLayers.Map({
					div: "map",
					allOverlays: true
				});
	
				
				var osm = new OpenLayers.Layer.OSM.localOSM("Internal (OSM)");
				var gmap = new OpenLayers.Layer.Google("Google Maps", {visibility: false});
				
				var trucks = new OpenLayers.Layer.Markers('Trucks');
				var trailers = new OpenLayers.Layer.Markers('Smart Trailers');
				
				map.addLayers([osm, gmap, trucks, trailers]);
				
				
				var size = new OpenLayers.Size(21,25);
	            var offset = new OpenLayers.Pixel(-(size.w/2), -size.h);
	            var icon = new OpenLayers.Icon('js/OpenLayers/img/marker.png',size,offset);
	            trucks.addMarker(new OpenLayers.Marker(new OpenLayers.LonLat(-5,0),icon));

	            var halfIcon = icon.clone();
	            trucks.addMarker(new OpenLayers.Marker(new OpenLayers.LonLat(0,45),halfIcon));