title: Specify multiple classes in HTML::Element's look_down routine Perl?
body: <p>I am using <a href="http://search.cpan.org/perldoc?HTML%3a%3aTreeBuilder" rel="nofollow">HTML::TreeBuilder</a> to parse some HTML.</p>
  
  <p>Can you specify multiple classes in the '<a href="http://search.cpan.org/~jfearn/HTML-Tree-4.2/lib/HTML/Element.pm#%24h-%3Elook_down%28_...criteria..._%29" rel="nofollow">look_down</a>' routine?</p>
  
  <p>For in stance when searching through HTML using-</p>
  
  <pre><code>for ( $tree-&gt;look_down( 'class' =&gt; 'postbody'))
  </code></pre>
  
  <p>I also was to search for an additional class <code>'postprofile'</code> in the same loop.</p>
  
  <p>Is there a way of doing this without having to use a new -<code>for ( $tree-&gt;look_down( 'class' =&gt; 'postprofile' ))
  </code></p>
  
  <p>As this brings back 2 sets of results whereas I only want one merged set.</p>
  
  <p>I tried using - <code>for ( $tree-&gt;look_down( 'class' =&gt; 'postbody||postprofile'))
  </code>
  However this did not work,</p>
  
  <p>Thank you in advance.</p>