var layers = {
	"outdoors": {
		"title": "Outdoors",
		"url": "https://api.tiles.mapbox.com/v4/mapbox.outdoors/{z}/{x}/{y}.png?access_token=pk.eyJ1IjoibWFwYm94IiwiYSI6ImNpejY4NXVycTA2emYycXBndHRqcmZ3N3gifQ.rJcFIG214AriISLbB6B5aw",
		"attribution": "Map data &copy; <a href='https://www.openstreetmap.org/''>OpenStreetMap</a> contributors, <a href='https://creativecommons.org/licenses/by-sa/2.0/''>CC-BY-SA</a>, Imagery © <a href='https://www.mapbox.com/''>Mapbox</a>",
		"minZoom": 0,
		"maxZoom": 18,
		"visible": true
	},	
	"light": {
		"title": "Light",
		"url": "https://api.tiles.mapbox.com/v4/mapbox.light/{z}/{x}/{y}.png?access_token=pk.eyJ1IjoibWFwYm94IiwiYSI6ImNpejY4NXVycTA2emYycXBndHRqcmZ3N3gifQ.rJcFIG214AriISLbB6B5aw",
		"attribution": "Map data &copy; <a href='https://www.openstreetmap.org/''>OpenStreetMap</a> contributors, <a href='https://creativecommons.org/licenses/by-sa/2.0/''>CC-BY-SA</a>, Imagery © <a href='https://www.mapbox.com/''>Mapbox</a>",
		"minZoom": 0,
		"maxZoom": 18,
		"visible": true
	},
	"dark": {
		"title": "Dark",
		"url": "https://api.tiles.mapbox.com/v4/mapbox.dark/{z}/{x}/{y}.png?access_token=pk.eyJ1IjoibWFwYm94IiwiYSI6ImNpejY4NXVycTA2emYycXBndHRqcmZ3N3gifQ.rJcFIG214AriISLbB6B5aw",
		"attribution": "Map data &copy; <a href='https://www.openstreetmap.org/''>OpenStreetMap</a> contributors, <a href='https://creativecommons.org/licenses/by-sa/2.0/''>CC-BY-SA</a>, Imagery © <a href='https://www.mapbox.com/''>Mapbox</a>",
		"minZoom": 0,
		"maxZoom": 18,
		"visible": true
	},
	"streets": {
		"title": "Streets",
		"url": "https://api.tiles.mapbox.com/v4/mapbox.streets/{z}/{x}/{y}.png?access_token=pk.eyJ1IjoibWFwYm94IiwiYSI6ImNpejY4NXVycTA2emYycXBndHRqcmZ3N3gifQ.rJcFIG214AriISLbB6B5aw",
		"attribution": "Map data &copy; <a href='https://www.openstreetmap.org/''>OpenStreetMap</a> contributors, <a href='https://creativecommons.org/licenses/by-sa/2.0/''>CC-BY-SA</a>, Imagery © <a href='https://www.mapbox.com/''>Mapbox</a>",
		"minZoom": 0,
		"maxZoom": 18,
		"visible": true
	},
	"satellite": {
		"title": "Satellite",
		"url": "https://api.tiles.mapbox.com/v4/mapbox.satellite/{z}/{x}/{y}.png?access_token=pk.eyJ1IjoibWFwYm94IiwiYSI6ImNpejY4NXVycTA2emYycXBndHRqcmZ3N3gifQ.rJcFIG214AriISLbB6B5aw",
		"attribution": "Map data &copy; <a href='https://www.openstreetmap.org/''>OpenStreetMap</a> contributors, <a href='https://creativecommons.org/licenses/by-sa/2.0/''>CC-BY-SA</a>, Imagery © <a href='https://www.mapbox.com/''>Mapbox</a>",
		"minZoom": 0,
		"maxZoom": 18,
		"visible": true
	},
	"openTopoMap": {
		"title": "OpenTopoMap",
		"url": "https://{s}.tile.opentopomap.org/{z}/{x}/{y}.png",
		"attribution": "Map data: &copy; <a href='https://www.openstreetmap.org/copyright'>OpenStreetMap</a> contributors, <a href='http://viewfinderpanoramas.org'>SRTM</a> | Map style: &copy; <a href='https://opentopomap.org'>OpenTopoMap</a> (<a href='https://creativecommons.org/licenses/by-sa/3.0/'>CC-BY-SA</a>)",
		"minZoom": 1,
		"maxZoom": 17,
		"visible": true
	},
	"esriWorldImagery": {
		"title": "ESRI Imagery",
		"url": "https://server.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer/tile/{z}/{y}/{x}",
		"attribution": "Tiles &copy; Esri &mdash; Source: Esri, i-cubed, USDA, USGS, AEX, GeoEye, Getmapping, Aerogrid, IGN, IGP, UPR-EGP, and the GIS User Community",
		"minZoom": 0,
		"maxZoom": 18,
		"visible": true
	},
	"esriWorldStreet": {
		"title": "ESRI Streets",
		"url": "https://server.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer/tile/{z}/{y}/{x}",
		"attribution": "Tiles &copy; Esri &mdash; Source: Esri, DeLorme, NAVTEQ, USGS, Intermap, iPC, NRCAN, Esri Japan, METI, Esri China (Hong Kong), Esri (Thailand), TomTom, 2012",
		"minZoom": 0,
		"maxZoom": 18,
		"visible": true
	},
	"esriTerrain": {
		"title": "ESRI Terrain",
		"url": "https://server.arcgisonline.com/ArcGIS/rest/services/World_Terrain_Base/MapServer/tile/{z}/{y}/{x}",
		"attribution": "Tiles &copy; Esri &mdash; Source: USGS, Esri, TANA, DeLorme, and NPS",
		"minZoom": 0,
		"maxZoom": 13,
		"visible": true
	},
	"esriShadeRelief": {
		"title": "ESRI Shade Refief",
		"url": "https://server.arcgisonline.com/ArcGIS/rest/services/World_Shaded_Relief/MapServer/tile/{z}/{y}/{x}",
		"attribution": "Tiles &copy; Esri &mdash; Source: Esri",
		"minZoom": 0,
		"maxZoom": 13,
		"visible": true
	},
	"stamenTerrain": {
		"title": "Terrain",
		"url": "https://stamen-tiles-{s}.a.ssl.fastly.net/terrain/{z}/{x}/{y}{r}.png",
		"attribution": "Map tiles by <a href='http://stamen.com'>Stamen Design</a>, <a href='http://creativecommons.org/licenses/by/3.0'>CC BY 3.0</a> &mdash; Map data &copy; <a href='https://www.openstreetmap.org/copyright'>OpenStreetMap</a> contributors",
		"minZoom": 0,
		"maxZoom": 18,
		"visible": true
	},
	"openStreetMapFr": {
		"title": "OSM France",
		"url": "https://{s}.tile.openstreetmap.fr/osmfr/{z}/{x}/{y}.png",
		"attribution": "&copy; Openstreetmap France | &copy; <a href='https://www.openstreetmap.org/copyright'>OpenStreetMap</a> contributors",
		"minZoom": 0,
		"maxZoom": 20,
		"visible": true,
		"default": true
	},
	"openStreetMapDe": {
		"title": "OSM DE",
		"url": "https://{s}.tile.openstreetmap.de/tiles/osmde/{z}/{x}/{y}.png",
		"attribution": "&copy; <a href='https://www.openstreetmap.org/copyright'>OpenStreetMap</a> contributors",
		"minZoom": 0,
		"maxZoom": 18,
		"visible": true
	},
	"hyddaFull": {
		"title": "Hydda Full",
		"url": "https://{s}.tile.openstreetmap.se/hydda/full/{z}/{x}/{y}.png",
		"attribution": "Tiles courtesy of <a href='http://openstreetmap.se/' target='_blank'>OpenStreetMap Sweden</a> &mdash; Map data &copy; <a href='https://www.openstreetmap.org/copyright'>OpenStreetMap</a> contributors",
		"minZoom": 0,
		"maxZoom": 18,
		"visible": true
	},
	"nasagibsAtNight": {
		"title": "NASAGIBS At Night",
		"url": "https://map1.vis.earthdata.nasa.gov/wmts-webmerc/VIIRS_CityLights_2012/default//GoogleMapsCompatible_Level{maxZoom}/{z}/{y}/{x}.jpg",
		"attribution": "Imagery provided by services from the Global Imagery Browse Services (GIBS), operated by the NASA/GSFC/Earth Science Data and Information System (<a href='https://earthdata.nasa.gov'>ESDIS</a>) with funding provided by NASA/HQ.",
		"minZoom": 1,
		"maxZoom": 8,
		"visible": true
	}
};