misc/openlayers/examples/example.js


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var map = new OpenLayers.Map("map");

var ol_wms = new OpenLayers.Layer.WMS(
    "OpenLayers WMS",
    "http://vmap0.tiles.osgeo.org/wms/vmap0",
    {layers: "basic"}
);

var dm_wms = new OpenLayers.Layer.WMS(
    "Canadian Data",
    "http://www2.dmsolutions.ca/cgi-bin/mswms_gmap",
    {
        layers: "bathymetry,land_fn,park,drain_fn,drainage," +
                "prov_bound,fedlimit,rail,road,popplace",
        transparent: "true",
        format: "image/png"
    },
    {isBaseLayer: false, visibility: false}
);

map.addLayers([ol_wms, dm_wms]);
map.addControl(new OpenLayers.Control.LayerSwitcher());
map.zoomToMaxExtent();