Not getting latlog on polygon on mouseover event in googemap

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ASP.NET

Javascript

i am trying to add tooltip on polygon on mouseover event

but it cannot getting coordinate of polygon on mouse over

here is code to create polygon and added mouse over event in the end of function (attachPolygonInfoWindow())...........

function editShape() {

            var hdncolor;
            var color;
            color = "#0000FF";
            //  var color = getColor(false);
            var points = [];
            var _Polygons = [];
            _Polygons = document.getElementById("PointsBox").value.split('?');

            for (var j = 0; j <= _Polygons.length - 1; j++) {
                debugger;
                var inputPolygon = _Polygons[j];
                pointsLines = inputPolygon.split(/ |\n/);
                var poly = new GPolygon([], color, 2, 0.7, color, 0.2);
                //var poly = new GPolyline([],color,lineWeight,opacity);
                //Read in coordinates
                for (var i = 0, len = pointsLines.length; i < len; ++i) {

                    if (pointsLines[i].search(/,|\t/) != -1) {
                        pointsCoords = pointsLines[i].split(/,|\t/);
                        if (parseFloat(pointsCoords[0]) != 0 && parseFloat(pointsCoords[1]) != 0) {
                            poly.insertVertex(0, new GLatLng(parseFloat(pointsCoords[0]), parseFloat(pointsCoords[1])));
                        }
                    }
                }
                map.addOverlay(poly);

                var name = "Polygon " + (++shapeCounter_);
                var cells = addFeatureEntry(name, color);

                // poly.enableEditing({ onEvent: "mouseover" });
                poly.disableEditing({ onEvent: "mouseout" });
                poly.disableEditing({ onEvent: "mouseover" });
                poly.Nametag = name;
                currpoly = poly;
                logCoordinates(poly);
                cells.desc.innerHTML = " (" + poly.getVertexCount() + " points)";
                GEvent.bind(poly, "lineupdated", cells.desc, function () {
                    logCoordinates(poly);
                    var cell = this;
                    cell.innerHTML = " (" + poly.getVertexCount() + " points)";
                });
                GEvent.addListener(poly, "click", function (latlng, index) {

                    currpoly = poly;
                    if (typeof index == "number") {
                        poly.deleteVertex(index);
                    } else {
                        //poly.setFillStyle({color: "#0000FF"});
                        poly.setStrokeStyle({ weight: 2 });
                        //poly.redraw(true);
                        cells.desc.innerHTML = " (" + poly.getVertexCount() + " points)";
                    }
                });
                debugger
               // GEvent.addListener(map, 'mouseover', showArrays);

                 attachPolygonInfoWindow(poly , '<strong>Info about this area</strong>');

            }
        }

function attachPolygonInfoWindow(poly, html) {
          debugger;
          poly.infoWindow = new google.maps.InfoWindow({
              content: html
          });
          GEvent.addListener(poly, 'mouseover', function (e) {
              debugger;
              var latLng = e.latLng;
              //this.setOptions({ fillOpacity: 0.1 });
              poly.infoWindow.setPosition(latLng);
              poly.infoWindow.open(map);
          });
         // GEvent.addListener(poly, 'mouseout', function () {
         //     debugger;
         //     //this.setOptions({ fillOpacity: 0.35 });
          //    poly.infoWindow.close();
        //  });
      }

it is not working because it not getting latlog on mouseover
plz help....