Search bar dont close link button tag.
Example:

<div class=" form-search btn-group">
<div class="input-append">
<input id="search_search" class="element-filter element-search search-query" type="text" size="32" value="" placeholder="- nombre -" title="- nombre -- nombre -" name="search_search">
<a class="btn hasTooltip" type="button" onclick="return Joomla.submitform()" title="" style="cursor:pointer;" data-original-title="Buscar">
<a class="btn hasTooltip" type="button" onclick="Joomla.resetFilters();" title="" style="cursor:pointer;" data-original-title="Limpiar">
</div>

The button tag dont close, the button dont appear