hw.js

        //var gsat = new OpenLayers.Layer.Google("SATELLITE", {type: google.maps.MapTypeId.SATELLITE, sphericalMercator:true, 'maxExtent': _bounds}),
        //var gmap = new OpenLayers.Layer.Google("Google Streets", {visibility: false});

        var ghyb = new OpenLayers.Layer.Google(
        "Google Hybrid",
        {"type": google.maps.MapTypeId.HYBRID, numZoomLevels: 22, sphericalMercator:true}
    );
            var options = {
            controls: [],
            sphericalMercator:true,
            //projection: new OpenLayers.Projection('EPSG:900913'), // senza la proiezione mi stampa metà layer
            units: "m",
            numZoomLevels: 22,
            maxResolution: 156543.0339,
            maxExtent: new OpenLayers.Bounds(-20037508.34, -20037508.34,
                         20037508.34, 20037508.34)
            };
            var panZoom = new OpenLayers.Control.PanZoom();
        var map = new OpenLayers.Map('map', {
                div: "gmap",
                sphericalMercator:true,
                projection: "EPSG:900913",
                displayProjection: "EPSG:4326",
                //zoomOffset: 5
        controls: [
            panZoom,
            new OpenLayers.Control.Navigation()
        ]
            });
            var regioni      = new OpenLayers.Layer.WMS(
            "regioni",
            "http://localhost:8080/geoserver/wms",
            {
            layers: "metmi-italy:reg2011_g" ,
            transparent: "true",
            sphericalMercator:true,
            format: "image/png",
            srs:'EPSG:900913', // old: 'EPSG:2077'
            //zoomOffset: 4,
            },
            {isBaseLayer: false,}
        );
    var comuni   = new OpenLayers.Layer.WMS(
        "comuni",
        "http://localhost:8080/geoserver/wms",
        {
        layers: "com2011_g" ,
        transparent: "true",
        format: "image/png",
        srs:'EPSG:900913', // old: 'EPSG:2077'
        //zoomOffset: 3
        },
        {isBaseLayer: false,}
    );
    var province_wms = new OpenLayers.Layer.WMS(
        "province",
        "http://localhost:8080/geoserver/wms",
        {
        layers: "metmi-italy:prov2011_g" ,
        transparent: "true",
        format: "image/png",
        srs:'EPSG:900913', // old: 'EPSG:2077'
        //zoomOffset: 3,
        },
        {isBaseLayer: false,}
    );
    var cap_wms = new OpenLayers.Layer.WMS(
        "cap",
        "http://localhost:8080/geoserver/wms",
        {
        layers: "metmi-italy:CapCR2006" ,
        transparent: "true",
        format: "image/png",
        srs:'EPSG:900913', // old: 'EPSG:2077'
        //zoomOffset: 3
        },
        {isBaseLayer: false
        //maxZoomLevel: 7
        }
    );
    function handleMapClickReg(evt)
{
var lonlat = map.getLonLatFromViewPortPx(evt.xy);
//alert("latitude : " + lonlat.lat + ", longitude : " + lonlat.lon);
console.log('regioni')

}
function handleMapClickPro(evt)
{
var lonlat = map.getLonLatFromViewPortPx(evt.xy);
//alert("latitude : " + lonlat.lat + ", longitude : " + lonlat.lon);
console.log('Province')

}
                //LAYER VETTORIALE IN OVERLAY PER LA SELEZIONE
        select = new OpenLayers.Layer.Vector("Selezioni", {styleMap:
        new OpenLayers.Style(OpenLayers.Feature.Vector.style["select"])
            });
        map.addLayers([ghyb,regioni,province_wms,comuni ,cap_wms,select])
        //regioni       .events.register('click', map, handleMapClickReg);
        selectionControl = new OpenLayers.Control.GetFeature({
                protocol: OpenLayers.Protocol.WFS.fromWMSLayer(regioni),
                box: true,
                toggle: true,
                //multipleKey: "shiftKey",
                toggleKey: "ctrlKey"
            });
            selectionControl.events.register("featureunselected", this, function(e) {
                removeFeaturesFromGrid(e.feature.fid);
                select.removeFeatures([e.feature]);
                //console.debug(e.feature);

            });
            map.addControl(selectionControl);//CONTROLLO PER PAN E DRAG SULLA MAPPA
            dragpan = new OpenLayers.Control.DragPan();
            map.addControl(dragpan);
            selectionControl.deactivate()
            dragpan.activate();
            //selectionControl.activate(); // attiva selectionControl
            //REGISTRO EVENTI PER SELEZIONARE CON CLICK IN E DESELEZIONARE CON CLICK OUT
            selectionControl.events.register("featureselected", this, function(e) {
                select.addFeatures([e.feature]);
                console.log('selected')
                //addFeaturesToGrid(e.feature);
            });
        map.addControl(selectionControl);
        //selectionControl.activate();
        dragpan = new OpenLayers.Control.DragPan();
        map.addControl(dragpan);
        selectionControl.deactivate()
        province_wms.events.register('click', map, handleMapClickPro);
        map.setCenter(new OpenLayers.LonLat(12.48,41.9).transform(
        new OpenLayers.Projection("EPSG:4326"),
        map.getProjectionObject()
        ), 7); // imposta il centro mappa e lo zomm
        map.addControl(new OpenLayers.Control.LayerSwitcher());
        map.events.register('zoomend', this, function (event) {

                var zLevel = map.getZoom();
                console.log(zLevel)
                /*if( zLevel <= 6 ){
                    map.addLayer(regioni);
                    //map.setBaseLayer(regioni);
                    selectionControl.protocol = OpenLayers.Protocol.WFS.fromWMSLayer(regioni);
                    //info.layers = [regioni];
                    map.removeLayer(province);
                    map.removeLayer(comuni);
                    map.removeLayer(cap);
                }*/
            })
        /*
        var point = new OpenLayers.LonLat( 41.9,12.48);
        map.setCenter(point)*/