问谷歌地图V3身份验证和复制问题

EN

<script type="text/javascript"
            src="http://maps.googleapis.com/maps/api/js?key=xxxxxxxxxx..&sensor=false&v=3&callback=initialize">
</script>

 <script>
        document.domain = '<?php echo $_SERVER["HTTP_HOST"]; ?>';

        $(function() {
            $("#tabs").tabs();
        });

        function initialize() {
            var mapOptions = {
                zoom: 8,
                center: new google.maps.LatLng(-34.397, 150.644)
            };

            var map = new google.maps.Map(document.getElementById('map-canvas'),
                    mapOptions);
        }

        function loadScript() {
            var script = document.createElement('script');
            script.type = 'text/javascript';
            script.src = 'http://maps.googleapis.com/maps/api/js?key=..........&sensor=false&v=3&callback=initialize';
            document.body.appendChild(script);
        }

        window.onload = loadScript;

    </script>