Need help in google map, geolocation

See more:

C#

ASP.NET

Google-Maps

Script 1:

<script type="text/javascript">

    //Add Marker @certain coordinate
    var markers;
    function fnSetCustomMarkers()
        {
        init_map('my_map', 1.56, 103.65, 14);
        }


      // NAK PANGIL GOOGLE MAP
        function init_map(map_canvas_id, lat, lng, zoomLevel)
        {
         var myLatLng = new google.maps.LatLng(lat, lng);
         var options = {
            zoom: zoomLevel,
            center: myLatLng,
            mapTypeId: google.maps.MapTypeId.ROADMAP
                        };

         var map_canvas = document.getElementById(map_canvas_id);
         var map = new google.maps.Map(map_canvas, options);
         var infowindow = new google.maps.InfoWindow();

         // Place markers
         var bounds = new google.maps.LatLngBounds();
         var markers1 = [];
            for (var i = 0; i < markers.length; i++)
            {
                var marker = new google.maps.Marker(markers[i]);

                markers1.push(marker);

                google.maps.event.addListener(marker, 'click', function() {
                infowindow.open(map,marker);
                             });

               bounds.extend(marker.getPosition());
            }

            var markerCluster = new MarkerClusterer(map, markers1);

      }

</script>

Script 2:

<script>
    (function ()
    {
        google.load("maps", "2");
        google.setOnLoadCallback(function () {

            // Create map
            var v = document.getElementById("Label1").innerHTML; //Label status
            var map = new google.maps.Map2(document.getElementById("map")),

            //Read marker text from asp label
                markerText = document.getElementById("Label1").innerHTML = v,
                markOutLocation = function (lat, long) {
                    var latLong = new google.maps.LatLng(lat, long),
                        marker = new google.maps.Marker(latLong);
                    map.setCenter(latLong, 13);
                    map.addOverlay(marker);
                    marker.openInfoWindow(markerText);

                    google.maps.Event.addListener(marker, "click", function () {
                        marker.openInfoWindow(markerText);
                                                });
                        };

                map.setUIToDefault();

            // Check for geolocation support
            if (navigator.geolocation) {
                // Get current position
                navigator.geolocation.getCurrentPosition(function (position) {
                        // Success!
                        markOutLocation(position.coords.latitude, position.coords.longitude);

                    var lat = '<%= TextBox2.ClientID %>';
                    var lon  = '<%= TextBox3.ClientID %>';

                document.getElementById(lon).value = position.coords.longitude;
                  document.getElementById(lat).value = position.coords.latitude;

                    var geocoder = geocoder = new GClientGeocoder();
                    var coord = position.coords.latitude+","+position.coords.longitude;
                    geocoder.getLocations(coord, addAddressToMap);


                  //Get address
                  function addAddressToMap(response)
                    {
                       place = response.Placemark[0];
                        point = new GLatLng(place.Point.coordinates[1],
                        place.Point.coordinates[0]);

                       var add  = '<%= TextBox4.ClientID %>';
                        document.getElementById(add).value = place.address;

                        var add2  = '<%= Label5.ClientID %>';
                        document.getElementById(add2).innerText  = place.address;

                    }


                    },
                    function () {
                        // Gelocation fallback: Defaults to Stockholm, Sweden
                        markerText = "<p>Please accept geolocation for me to be able to find you. <br>I've put you in Stockholm for now.</p>";
                        markOutLocation(59.3325215, 18.0643818);
                    }
                );
            }
            else {
                // No geolocation fallback: Defaults to Eeaster Island, Chile
                markerText = "<p>No location support. Try Easter Island for now. :-)</p>";
                markOutLocation(-27.121192, -109.366424);
            }
        });
    })();
</script>

my question:
1- how to join Script 1 to Script 2..
2- Script 1 is the script that will get the data (latlong) from database, & plot it in the google map using marker
3- Script 2 is geolocation function.
4- i want to join Script 1 to Script 2,so that i will get result:
- 1st the code will run the geolocation function like usual.
- then i will add the button. when user click the button, it will call
script 2 which it will plot the marker (latlong from database) to the map
by not losing the marker from Script 1 (which is our location).
- all the marker displayed on the map, have the function
marker.openInfoWindow which the detail can be add here.