Gmap API V3 marker coordinates - google-app-engine

Question

I have found example if someone need however I need to get first coordinates from address so later can adjust it. Someone knows how to do it?
var geocoder = new google.maps.Geocoder();
function geocodePosition(pos) {
geocoder.geocode({
latLng: pos
}, function(responses) {
if (responses && responses.length > 0) {
updateMarkerAddress(responses[0].formatted_address);
} else {
updateMarkerAddress('Cannot determine address at this location.');
}
});
}
function updateMarkerStatus(str) {
document.getElementById('markerStatus').innerHTML = str;
}
function updateMarkerPosition(latLng) {
document.getElementById('info').innerHTML = [
latLng.lat(),
latLng.lng()
].join(', ');
}
function updateMarkerAddress(str) {
document.getElementById('address').innerHTML = str;
}
function initialize() {
var latLng = new google.maps.LatLng(1.54232,-1.4353423);
var map = new google.maps.Map(document.getElementById('mapCanvas'), {
zoom: 8,
center: latLng,
mapTypeId: google.maps.MapTypeId.ROADMAP
});
var marker = new google.maps.Marker({
position: latLng,
title: 'Point A',
map: map,
draggable: true
});
// Update current position info.
updateMarkerPosition(latLng);
geocodePosition(latLng);
// Add dragging event listeners.
google.maps.event.addListener(marker, 'dragstart', function() {
updateMarkerAddress('Dragging...');
});
google.maps.event.addListener(marker, 'drag', function() {
updateMarkerStatus('Dragging...');
updateMarkerPosition(marker.getPosition());
});
google.maps.event.addListener(marker, 'dragend', function() {
updateMarkerStatus('Drag ended');
geocodePosition(marker.getPosition());
});
// Onload handler to fire off the app.
google.maps.event.addDomListener(window, 'load', initialize);

Answer 1

if your browser support the geolocation you want get coordinate with this function :
navigator.geolocation.getCurrentPosition(function(position) {
geolocationCoordinates = new google.maps.LatLng(position.coords.latitude,position.coords.longitude);
//position.coords.latitude = latitude coordonates;
//position.coords.longitude = longitude coordonates;
}
after, you can create a new map whith this coordonates.
This code is functional with all browser supporting the geolocation.