                         <option value="stroke-dasharray:2 2;">dot</option>
                            <option value="stroke-dasharray:10 5 2 5;">dash-dot</option>
                        </select>
                    </td>
                </tr>
                <tr>
                    <td>Line thickness</td>
                    <td>
                        <select id="thickness" onchange="updateStyle()">
                            <option value="stroke-width:0;">0</option>
                            <op