title: Label for checkbox
body: <pre><code>&lt;div&gt;&lt;label for="group"&gt;Select lists&lt;/label&gt;&lt;/div&gt;
  &lt;div&gt;
      &lt;input type="checkbox" name="group" id="group1" value="1" title="Main List" /&gt;
  &lt;label for="group1"&gt;Main List&lt;/label&gt;
      &lt;input type="checkbox" name="group" id="group2" value="2" title="Secondary List" /&gt;
  &lt;label for="group2"&gt;Secondary List&lt;/label&gt;
  &lt;label for="group1 group1"&gt;Check All&lt;/label&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>Is there anyway to target the label with the <code>for=...</code> attribute or do I need to assign an <code>id</code>?</p>