[minfinger]

It's got to be in this section

      <span class="search-sort-cell">
        {if $name eq $selected}
          <a href="{$url}&amp;sort={$name}&amp;sort_direction={if $direction eq 1}0{else}1{/if}" title="{$lng.lbl_sort_by|escape}: {$field|escape}" class="search-sort-link {if $direction}down-direction{else}up-direction{/if}">{$field}</a>
        {else}
          <a href="{$url}&amp;sort={$name}&amp;sort_direction={$direction}" title="{$lng.lbl_sort_by|escape}: {$field|escape}" class="search-sort-link">{$field}</a>
        {/if}
      </span>

I think it's the $field thing, but I have no idea. I assume it's being pushed there from another template.