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    copied!<p>There may be a way to do this with javascript.</p> <p>Add a hidden textbox with the name "s" and rename the selectboxes.</p> <p>On each select onchange attribute call a javascript that adds the current selectbox's value to the hidden textbox.</p> <p>When the form is submitted the hidden box have the value "dog red" and should be passed as ?s=dog+red</p> <p>I am at work now so dont have time to work out a code sample.</p> <pre><code>&lt;script type="text/javascript" charset="utf-8"&gt; function add_criteria (el) { search = document.getElementById('search_criteria'); search.value = document.getElementById('type').value + " " + document.getElementById('color').value; } &lt;/script&gt; &lt;form role="search" method="get" id="searchform" action="test.html"&gt; &lt;label class="screen-reader-text" for="s"&gt;Search for:&lt;/label&gt; Type &lt;select name='type' id='type' class='postform' onchange="add_criteria(this);"&gt; &lt;option value='' selected='selected'&gt;All&lt;/option&gt; &lt;option class="level-0" value="dog"&gt;Dog&lt;/option&gt; &lt;option class="level-0" value="cat"&gt;Cat&lt;/option&gt; &lt;/select&gt; Color &lt;select name='color' id='color' class='postform' onchange="add_criteria(this);"&gt; &lt;option value='' selected='selected'&gt;All&lt;/option&gt; &lt;option class="level-0" value="red"&gt;red&lt;/option&gt; &lt;option class="level-0" value="white"&gt;white&lt;/option&gt; &lt;option class="level-0" value="green"&gt;green&lt;/option&gt; &lt;/select&gt; &lt;input type="hidden" id="search_criteria" value="" name="s" /&gt; &lt;input type="submit" id="searchsubmit" value="Search" /&gt; &lt;/div&gt; &lt;/form&gt; </code></pre> <p>This may not be crossbrowser compatible (only tested in firefox). And if Wordpress uses jQuery or another javascript library this can be simplified but this is the general idea.</p>
 

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