
            var map;
            var format;
 
            function init() {
                OpenLayers.ImgPath = "http://map.geo.admin.ch/main/wsgi/lib/GeoAdmin.ux/Map/img/";
                // Création de la carte
                map = new OpenLayers.Map({
                    div: "map",
                    projection: "EPSG:21781",
                    units: "m",
                    controls: [
                        new OpenLayers.Control.Navigation(),
                        new OpenLayers.Control.PanZoomBar(),
                        new OpenLayers.Control.ScaleLine({maxWidth: 120})
                    ],
                    maxExtent: new OpenLayers.Bounds(0, 0, 1200000, 1200000),
                    resolutions: [650,500,250,100,50,20,10,5,2.5]
                });
 
                addWMTSLayer();
            }
 
            function addWMTSLayer() {
                // Parser spécialisé
                var format = new OpenLayers.Format.WMTSCapabilities({});
                // On va récupérer le fichier "getCapabilities"
                OpenLayers.Request.GET({
                    url: "http://api.geo.admin.ch/main/wsgi/doc/data/wmts-getcapabilities.xml?SERVICE=WMTS&VERSION=1.0.0&REQUEST=GetCapabilities",
                    params: {
                        SERVICE: "WMTS",
                        VERSION: "1.0.0",
                        REQUEST: "GetCapabilities"
                    },
                    success: function(request) {
                        var doc = request.responseXML;
                        if (!doc || !doc.documentElement) {
                            doc = request.responseText;
                        }
 
                        if (!doc || doc.length <1) { alert("Trouble parsing the getCapabilities document"); return false;}
                        var capabilities = format.read(doc);
                        // Si le parser a pu lire les données, on crée un layer
                        var layer = format.createLayer(capabilities, {
                            layer: "ch.swisstopo.pixelkarte-farbe",
                            matrixSet: "21781", //"Bgdi_lv03",
                            format: "image/jpeg",
                            opacity: 1.0,
                            isBaseLayer: true,
                            requestEncoding: "REST",
                            style: "default" ,  // must be provided
                            dimensions: ['TIME'],
                            params: {'time': '2009'},
                            formatSuffix: 'jpeg'
                        });
                        // Ajout du layer à la map
                        map.addLayer(layer);
                        map.setCenter(new OpenLayers.LonLat(650000, 180000), 2);
                    },
                    failure: function() {
                        // En cas de problème de la requête XHR
                        alert("Trouble getting capabilities doc");
                        OpenLayers.Console.error.apply(OpenLayers.Console, arguments);
                    }
                });
            }