  });

            $('#test-2 button').click(function(e) {
                var margins = sizes[parseInt($(e.target).attr('data-index'))];
                console.log(margins);
                chart.option(margins);
            });
        });
        </script>

        <!-- Test 3 -->
        <div id="test-3" class="test">
            <h2>3. Ticks and Tick Formats</h2>
            <p>
                Correctly resize margins when options are set.
            </p>
            <div class="epoch"></div>
      