//style
var estilo_ruas = new OpenLayers.StyleMap({
                    "default": new OpenLayers.Style({
                    strokeColor: "#ff0000",
                    strokeOpacity: .7,
                    strokeWidth: 2,
                    fillColor: "#ff0000",
                    fillOpacity: 0,
                    cursor: "pointer"
                    }),
                                                        "temporary": new OpenLayers.Style({
                strokeColor: "#ffff33",
                strokeOpacity: .9,
                strokeWidth: 3,
                fillColor: "#ffff33",
                fillOpacity: .3,
                cursor: "pointer"
                }),
                "select": new OpenLayers.Style({
                strokeColor: "#0033ff",
                strokeOpacity: .7,
                strokeWidth: 3,
                fillColor: "#0033ff",
                fillOpacity: 0,
                graphicZIndex: 2,
                cursor: "pointer"
                })
            });

//Create layer
var ruas = new OpenLayers.Layer.Vector("Ruas", {
                        strategies  : [new OpenLayers.Strategy.BBOX()],
                        styleMap: estilo_ruas,
                        isBaseLayer: false,
                        visibility: true,
                        protocol: new OpenLayers.Protocol.WFS({
                        version : "1.1.0",
                        srsName: "EPSG:900913",
                        url: "http://my_server.pt/cgi-bin/mapserv?map=../www/mapserver/file_map.pt.map",
                                                                                featureType: "ruas",
                        featureNS: "nameserver.pt",
                        geometryName: "the_geom",
                        schema: "http://schemas.opengis.net/wfs/1.1.0/wfs.xsd"
                        })
                        }
                );