   </tr>
                <tr>
                    <td>Fill Opacity</td>
                    <td>
                        <select id="fillopacity" onchange="updateStyle()">
                            <option value="fill-opacity:0.1;">0.1</option>
                            <option value="fill-opacity:0.2;">0.2</option>
                            <option value="fill-opacity:0.3;">0.3</option>
                            <option value="fill-opacity:0.4;">0.4</option>
                            <option valu