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  <div>    Search:    <?php echo form_remote_tag(array(      'url'    => '@cart_filter',      'update' => 'product_list',    )) ?>      <?php /*echo input_hidden_tag('question_id', $question->getId())*/ ?>      <?php echo input_auto_complete_tag('filter', '', '@cart_autocomplete', 'autocomplete=off', 'use_style=true') ?>      <?php echo submit_tag('filter') ?>    </form>  </div><div>    Search:    <form onsubmit="new Ajax.Updater('product_list', '/sf_ajaxdemo/web/cart_filter', {asynchronous:true, evalScripts:false, parameters:Form.serialize(this)}); return false;" action="/sf_ajaxdemo/web/cart_filter" method="post">            <input type="text" name="filter" id="filter" value="" autocomplete="" /><div id="a_auto_complete" class="auto_complete"></div><script type="text/javascript">//<![CDATA[new Ajax.Autocompleter('filter', 'filter_auto_complete', '/sf_ajaxdemo/web/cart_autocomplete', {});//]]></script>      <input type="submit" name="commit" value="filter" />    </form>  </div>