<form action="/cgi-bin/koha/catalogue/search.pl" method="get" id="cat-search-block">
<input type="text" name="q" id="search-form" size="40" value="" title="Enter the terms you wish to search for." class="form-text" />
<input type="submit" name="op" id="opac-submit" value="Submit" class="form-submit" />
+ <input type="hidden" name="idx" value="kw,wrdl" />
</form>
</div>
<ul>