case "mhc":

        if (!mhc_overlay_visible) {
            heatLayer = new HeatmapLayer({
            config: {
                "useLocalMaximum": true,
                "radius": 40,
                "gradient": {
                    0.45: "rgb(000,000,255)",
                    0.55: "rgb(000,255,255)",
                    0.65: "rgb(000,255,000)",
                    0.95: "rgb(255,255,000)",
                    1.00: "rgb(255,000,000)"
                }
            },
            "map": map,
            "domNodeId": "heatLayer",
            "opacity": 0.85
            });

            map.addLayer(heatLayer);
            var data = [
            {
                attributes: {},
                geometry: {
                    spatialReference: {wkid: 102100},
                    type: "point",
                    x: -13625078.0408,
                    y: 4548494.332400002
                }
            },
            {
                attributes: {},
                geometry: {
                    spatialReference: {wkid: 102100},
                    type: "point",
                    x: -13625078.0408,
                    y: 4548494.332400002
                }
            }
            ];

            heatLayer.setData(data);
            //overlayObjects['mhc'].setMap(heatLayer);

            mhc_overlay_visible = true;
            $("#MHC").removeClass("menuLink");
            $("#MHC").addClass("menuLink_selected");

            visibleOverlays.push("mhc");

            var content = "";
            content = "<table class="filter-table">";
            content += "<tr><td><label for='startDate'>From </label></td><td><input name='startDate' id='startDate' class='date-picker' /></td></tr>";
            content += "<tr><td>&nbsp;</td></tr>";
            content += "<tr><td><label for='endDate'>To </label></td><td><input name='endDate' id='endDate' class='date-picker' /></td></tr>";

            content += "</table>";

            var label = "MHC Live Map";

            filterWindowContent.push({ id: "mhc", label: label, content: content });
            showFilterWindow();
            showdatepicker();

            map.setMapTypeId(google.maps.MapTypeId.ROADMAP);
            addToCurrentOverlayList("loadedmhc", "mhc", "MHC Live Map");

        } else {
            overlayObjects['mhc'].setMap(null);
            mhc_overlay_visible = false;
            $("#MHC").removeClass("menuLink_selected");
            $("#MHC").addClass("menuLink");

            visibleOverlays.splice($.inArray("mhc", visibleOverlays), 1);
            removeOverlayOpacity("mhc");
            $('#loadedmhc').remove();
        }
        break;