how to surround user selection in editable iframe
<p>I need to wrap user's selection within editable <code>&lt;iframe&gt;</code> in a <code>&lt;b&gt;</code> (or <code>&lt;span&gt;</code>) tags in IE. How can I do it? I create a range:</p>

<pre><code>rng = document.selection.createRange();
</code></pre>

<p>and can't understand what to do next.</p>
