diff --git a/WMS choose.htm b/WMS choose.htm
index 94fdd69..80ac8bf 100644
--- a/WMS choose.htm	
+++ b/WMS choose.htm	
@@ -1,22 +1,22 @@
 <!DOCTYPE html>
 <html lang="en">
-<head>
-	<base target="_top">
-	<meta charset="utf-8">
-	<meta name="viewport" content="width=device-width, initial-scale=1">
-	
-	<title>Layers Control Tutorial - Leaflet</title>
-	
-	<link rel="shortcut icon" type="image/x-icon" href="docs/images/favicon.ico" />
+	<head>
+		<base target="_top">
+		<meta charset="utf-8">
+		<meta name="viewport" content="width=device-width, initial-scale=1">
 
-    <link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css" integrity="sha256-p4NxAoJBhIIN+hmNHrzRCf9tD/miZyoHS5obTRR9BMY=" crossorigin=""/>
-    <script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js" integrity="sha256-20nQCchB9co0qIjJZRGuk2/Z9VM+kNiyxNV1lvTlZBo=" crossorigin=""></script>
+		<title>Layers Control Tutorial - Leaflet</title>
 
-	<style>
-		html, body {
-			height: 100%;
-			margin: 0;
-		}
+		<link rel="shortcut icon" type="image/x-icon" href="docs/images/favicon.ico" />
+
+		<link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css" integrity="sha256-p4NxAoJBhIIN+hmNHrzRCf9tD/miZyoHS5obTRR9BMY=" crossorigin=""/>
+		<script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js" integrity="sha256-20nQCchB9co0qIjJZRGuk2/Z9VM+kNiyxNV1lvTlZBo=" crossorigin=""></script>
+
+		<style>
+html, body {
+	height: 100%;
+	margin: 0;
+}
 		.leaflet-container {
 			height: 400px;
 			width: 600px;
@@ -25,100 +25,101 @@
 			background-color: white;
 			outline:auto;
 		}
-	</style>
+		</style>
+	</head>
 
-	
-</head>
-<body>
-	<div class="sliderBox">
-		<input type="range" min="1" max="100" value="50" class="slider" id="myRange">
-		<span id ="sliderOutput"></span>
-		<div id="scaleOutput"></div>
-	</div>
+	<body>
+		<div class="sliderBox">
+			<input type="range" min="1" max="100" value="50" class="slider" id="myRange">
+			<span id ="sliderOutput"></span>
+			<div id="scaleOutput"></div>
+		</div>
 
-<div id='map'></div>
+		<div id='map'></div>
 
-<script>
-const cities = L.layerGroup();
-const mLittleton = L.marker([39.61, -105.02]).bindPopup('This is Littleton, CO.').addTo(cities);
-const mDenver = L.marker([39.74, -104.99]).bindPopup('This is Denver, CO.').addTo(cities);
-const mAurora = L.marker([39.73, -104.8]).bindPopup('This is Aurora, CO.').addTo(cities);
-const mGolden = L.marker([39.77, -105.23]).bindPopup('This is Golden, CO.').addTo(cities);
-const osm = L.tileLayer('https://tile.openstreetmap.org/{z}/{x}/{y}.png', {
-	maxZoom: 19,
-	attribution: '&copy; <a href="http://www.openstreetmap.org/copyright">OpenStreetMap</a>'
-});
+		<script>
+			const mLittleton 	= L.marker([39.61, -105.02]).bindPopup('This is Littleton, CO.');
+			const mDenver 		= L.marker([39.74, -104.99]).bindPopup('This is Denver, CO.');
+			const mAurora 		= L.marker([39.73, -104.8]).bindPopup('This is Aurora, CO.');
+			const mGolden 		= L.marker([39.77, -105.23]).bindPopup('This is Golden, CO.');
+			const crownHill 	= L.marker([39.75, -105.09]).bindPopup('This is Crown Hill Park.');
+			const rubyHill 		= L.marker([39.68, -105.00]).bindPopup('This is Ruby Hill Park.');
 
-const osmHOT = L.tileLayer('https://{s}.tile.openstreetmap.fr/hot/{z}/{x}/{y}.png', {
-	maxZoom: 19,
-	attribution: '&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors, Tiles style by <a href="https://www.hotosm.org/" target="_blank">Humanitarian OpenStreetMap Team</a> hosted by <a href="https://openstreetmap.fr/" target="_blank">OpenStreetMap France</a>'
-});
+			const cities = L.layerGroup([
+				mLittleton,
+				mDenver,
+				mAurora,
+				mGolden
+			]);
+			const parks = L.layerGroup([
+				crownHill,
+				rubyHill
+			]);
 
-const map = L.map('map', {
-	center: [48.1214044, -1.7109459],
-	zoom: 17,
-	layers: [osm, cities]
-});
+			const osm = L.tileLayer('https://tile.openstreetmap.org/{z}/{x}/{y}.png', {
+				maxZoom: 19,
+				attribution: '&copy; <a href="http://www.openstreetmap.org/copyright">OpenStreetMap</a>'
+			});
+			const osmHOT = L.tileLayer('https://{s}.tile.openstreetmap.fr/hot/{z}/{x}/{y}.png', {
+				maxZoom: 19,
+				attribution: '&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors, Tiles style by <a href="https://www.hotosm.org/" target="_blank">Humanitarian OpenStreetMap Team</a> hosted by <a href="https://openstreetmap.fr/" target="_blank">OpenStreetMap France</a>'
+			});
+			const IGNOrtho = L.tileLayer("https://wxs.ign.fr/essentiels/geoportail/wmts?" +
+				"&REQUEST=GetTile&SERVICE=WMTS&VERSION=1.0.0" +
+				"&STYLE=normal" +
+				"&TILEMATRIXSET=PM" +
+				"&FORMAT=image/jpeg"+
+				"&LAYER=ORTHOIMAGERY.ORTHOPHOTOS"+
+				"&TILEMATRIX={z}" +
+				"&TILEROW={y}" +
+				"&TILECOL={x}", 
+				{
+					minZoom : 0,
+					maxZoom : 24,
+					opacity : 0.5,
+					attribution : "IGN-F/Geoportail",
+					tileSize : 256 // les tuiles du Géooportail font 256x256px
+				}
+			);
 
-const baseLayers = {
-	'OpenStreetMap': osm,
-	'OpenStreetMap.HOT': osmHOT
-};
+			const baseLayers = {
+				'OpenStreetMap': osm,
+				'OpenStreetMap.HOT': osmHOT
+			};
 
-const overlays = {
-	'Cities': cities
-};
+			const overlays = {
+				'Cities': cities,
+				'IGNOrtho': IGNOrtho,
+				'Parks': parks
+			};
 
-const layerControl = L.control.layers(baseLayers, overlays).addTo(map);
+			const map = L.map('map', {
+				center: [48.1214044, -1.7109459],
+				zoom: 17,
+				layers: [
+					osm
+				]
+			});
+			const layerControl = L.control.layers(baseLayers, overlays).addTo(map);
 
+			var slider = document.getElementById("myRange");
+			var output = document.getElementById("sliderOutput");
+			output.innerHTML = slider.value;
 
-const crownHill = L.marker([39.75, -105.09]).bindPopup('This is Crown Hill Park.');
-const rubyHill = L.marker([39.68, -105.00]).bindPopup('This is Ruby Hill Park.');
+			slider.oninput = function() {
+				output.innerHTML = this.value;
+				IGNOrtho.setOpacity(this.value/100);
+			}
+			// gestion de l'échelle
+			L.control.scale().addTo(map);
 
-const parks = L.layerGroup([crownHill, rubyHill]);
-
-const IGNOrtho = L.tileLayer("https://wxs.ign.fr/essentiels/geoportail/wmts?" +
-        "&REQUEST=GetTile&SERVICE=WMTS&VERSION=1.0.0" +
-        "&STYLE=normal" +
-        "&TILEMATRIXSET=PM" +
-        "&FORMAT=image/jpeg"+
-        "&LAYER=ORTHOIMAGERY.ORTHOPHOTOS"+
-	"&TILEMATRIX={z}" +
-        "&TILEROW={y}" +
-        "&TILECOL={x}", 
-	{
-		minZoom : 0,
-		maxZoom : 24,
-		opacity : 0.5,
-        attribution : "IGN-F/Geoportail",
-		tileSize : 256 // les tuiles du Géooportail font 256x256px
-});
-layerControl.addOverlay(IGNOrtho, 'IGNORtho');
-layerControl.addOverlay(parks, 'Parks');
-
-
-var slider = document.getElementById("myRange");
-var output = document.getElementById("sliderOutput");
-output.innerHTML = slider.value;
-
-slider.oninput = function() {
-	output.innerHTML = this.value;
-	IGNOrtho.setOpacity(this.value/100);
-}
-// gestion de l'échelle
-L.control.scale().addTo(map);
-
-
-//var y = map.getSize().y / 2;
-var position = map.getCenter();
-var widthInMeter = 6378137 * 2 * Math.PI * Math.cos(map.getCenter().lat * Math.PI / 180);
-var scaleOutput = document.getElementById("scaleOutput");
-scaleOutput.innerHTML = widthInMeter;
-map.on('moveend', function(){
-	scaleOutput.innerHTML = 6378137 * 2 * Math.PI * Math.cos(map.getCenter().lat * Math.PI / 180);
-});
-</script>
-
-
-</body>
+			//var y = map.getSize().y / 2;
+			const widthInMeter 	  = 6378137 * 2 * Math.PI * Math.cos(map.getCenter().lat * Math.PI / 180);
+			var scaleOutput 	  = document.getElementById("scaleOutput");
+			scaleOutput.innerHTML = widthInMeter;
+			map.on('moveend', function(){
+				scaleOutput.innerHTML = widthInMeter;
+			});
+		</script>
+	</body>
 </html>
