Geolocation script ... does not work in chrome without SSL

geolocation.js

                    function showPosition(position) {
                        document.write('Latitude: '+position.coords.latitude+'Longitude: '+position.coords.longitude);
                    }

                    function showError(error) {
                        switch(error.code) {
                            case error.PERMISSION_DENIED:
                                alert("User denied the request for Geolocation.");
                                break;
                            case error.POSITION_UNAVAILABLE:
                                alert("Location information is unavailable.");
                                break;
                            case error.TIMEOUT:
                                alert("The request to get user location timed out.");
                                break;
                            case error.UNKNOWN_ERROR:
                                alert("An unknown error occurred.");
                                break;
                        }
                    }

                    if (navigator.geolocation) {
                        var optn = {
                            enableHighAccuracy : true,
                            timeout : Infinity,
                            maximumAge : 0
                        };
                        navigator.geolocation.getCurrentPosition(showPosition, showError, optn);
                    } else {
                        alert('Geolocation is not supported in your browser');
                    }