title: Is it possible to filter Firebug's HTML panel?
body: <p>Can I filter the <em>HTML</em> panel in Firebug? I have problems with additional HTML source code added by add-ons like Pearltrees.</p>
  
  <p>Here's an example:</p>
  
  <pre><code>&lt;span class="pearlItButton" style="position: absolute; display: none; cursor: pointer; z-index: 150000000; opacity: 0; width: 34px; height: 34px;" unselectable="on" id="pearlItButtonImg"&gt;&lt;/span&gt;
  &lt;span class="pearlItButton" style="position: absolute; display: none; cursor: pointer; z-index: 150000000; opacity: 0; width: 34px; height: 34px;" unselectable="on" id="pearlItButtonTxt"&gt;&lt;/span&gt;
  &lt;form target="pearltrees_overlay" action="https://www.pearltrees.com/s/pearler/listFromAddons" method="post" id="pearlIt"&gt;
    &lt;input name="url" type="hidden"&gt;&lt;input name="title" type="hidden"&gt;
    &lt;input name="layout" type="hidden"&gt;&lt;input name="text" type="hidden"&gt;
    &lt;input name="buttonParams" type="hidden"&gt;&lt;input name="version" value="0.9" type="hidden"&gt;
  &lt;/form&gt;
  &lt;span class="pearlItButton" style="position: absolute; display: none; cursor: pointer; z-index: 150000000; opacity: 0; width: 34px; height: 34px;" unselectable="on" id="pearlItButtonImg"&gt;&lt;/span&gt;
  &lt;span class="pearlItButton" style="position: absolute; display: none; cursor: pointer; z-index: 150000000; opacity: 0; width: 34px; height: 34px;" unselectable="on" id="pearlItButtonTxt"&gt;&lt;/span&gt;
  &lt;form target="pearltrees_overlay" action="https://www.pearltrees.com/s/pearler/listFromAddons" method="post" id="pearlIt"&gt;
    &lt;input name="url" type="hidden"&gt;&lt;input name="title" type="hidden"&gt;
    &lt;input name="layout" type="hidden"&gt;&lt;input name="text" type="hidden"&gt;
    &lt;input name="buttonParams" type="hidden"&gt;&lt;input name="version" value="0.9" type="hidden"&gt;
  &lt;/form&gt;
  </code></pre>