Google Maps v3 API useGeolocation

gistfile1.js

/* Ondrej Slamecka 2012 */

/**
 * @param success Callback called on success
 * @returns bool
 */
google.maps.Map.prototype.useGeolocation = function(success, failure)
{
    if(typeof success === 'undefined')
        return false;

    var geolocator;

    try {
        if (typeof navigator.geolocation === 'undefined'){
            geolocator = google.gears.factory.create('beta.geolocation');
        } else {
            geolocator = navigator.geolocation;
        }
    } catch(error) {
        failure();
        console.log('Unable to load geolocation service');
        throw error;
        return false;
    }
       
    if (geolocator) {
        var self = this;
        geolocator.getCurrentPosition(
            function(position){            
                success(position);       
            },
            function(error){
                failure();
                console.log('Unable to get current position from geolocation service');
                throw error;
                return false;
            }
        );
    } else {
        return false;
    }    
    return true;
}