</h1> <h2>Status: <code id="statusField">NO-STATUS</code></h2> <p>Click the button to start and stop the sine wave playing.</p> <button onclick="toggleSound(true)">Play</button> <button onclick="toggleSound(false)">Stop</button> <p>Enter the frequency of the sine wave:</p> <input type="text" size="15" id="frequency_field" value="440" onchange="changeFrequency(this.value)"> <!-- The NaCl plugin will be embedded inside the element with id "listener". See common.js.--> <div id="listener"></div> </body> </html>