var map = new OpenLayers.Map("Map",
		     { maxExtent: new OpenLayers.Bounds(-20037508,-20037508,20037508,20037508),
		        numZoomLevels: 17,
		        maxResolution: 156543,
		        units: 'm',
		        projection: "EPSG:900913",
		        controls: [
			    new OpenLayers.Control.LayerSwitcher(),
			    new OpenLayers.Control.PanZoomBar(),
			    new OpenLayers.Control.MouseDefaults(),
			    new OpenLayers.Control.ScaleLine(),
			    new OpenLayers.Control.Navigation()
		        ],
		        displayProjection:  new OpenLayers.Projection("EPSG:4326") });

	var archiveOrg = new OpenLayers.Layer.TMS("Archive.org Tiles",
					["http://www.archive.org/download/SharedMapTiles"],
					{ type: 'png', getURL: getArchiveTileURL, displayOutsideMaxExtent: true,
						attribution: '<a href="http://fosm.org">(C) CC-by-SA FOSM.org</a>', transitionEffect: 'resize'});

	map.addLayer(archiveOrg);
	map.setCenter(lonLatToMercator(new OpenLayers.LonLat(lng, lat)), zoom);

	OpenLayers.IMAGE_RELOAD_ATTEMPTS = 3;
	OpenLayers.Util.onImageLoadError = function()
	{
		this.src = "404.png";
	}

	map.addControl(new OpenLayers.Control.Attribution());