[...]
var divers = new OpenLayers.Layer.Vector("À voir, à faire et divers",
            {
                projection: map.displayProjection,
                strategies: [new OpenLayers.Strategy.Fixed()],
                protocol: new OpenLayers.Protocol.HTTP
                    ({url: "MOTO-voirfaireouachats.kml", format: new OpenLayers.Format.KML
                        ({extractStyles: true,  extractAttributes: true})
                    }),
            visibility: false});

        map.addLayers([google_street, google_sat, meteo, hotel, resto, bar, garage, route, divers]);

var switcherControl = new OpenLayers.Control.LayerSwitcher({'div':OpenLayers.Util.getElement('layerswitcher')});
map.addControl(switcherControl);
switcherControl.maximizeControl();

    var selectControl = new OpenLayers.Control.SelectFeature(garage,
        {hover: true,
        onSelect: function(feature) {
        var layer = feature.layer;
        feature.style.fillOpacity = 1;
        feature.style.pointRadius = 20;
        layer.drawFeature(feature);

    var content = "DESCRIPTION: " + feature.attributes.name2;

    var popup = new OpenLayers.Popup.FramedCloud(
    feature.id+"_popup",
    feature.geometry.getBounds().
    getCenterLonLat(),
    new OpenLayers.Size(250, 100),
    content,
    null,
    false,
    null);
    feature.popup = popup;
    map.addPopup(popup);
    },

    onUnselect: function(feature) {
    var layer = feature.layer;
    feature.style.fillOpacity = 0.7;
    feature.style.pointRadius = 16;
    feature.renderIntent = null;
    layer.drawFeature(feature);
    map.removePopup(feature.popup);
    }
    });