Add play button

Hi to all!

Can you explain me how to make play and toogle to fullscreen buttons? For original plugin I have code -

<a id="play" href="#">Play</a>
<script>
    Galleria.run('#galleria', {
        extend: function() {
            var gallery = this; // "this" is the gallery instance
            $('#play').click(function() {
                gallery.play(); // call the play method
            });
        }
    });
</script>

and it works..

but where i can put this in D7 module to make it work in D7??