if(isset($_REQUEST['checkAjax']) && $_REQUEST['checkAjax'] == '1' && isset($_REQUEST['txt_nif_cif'])){

	$handlers = ob_list_handlers();
    while (count($handlers) > 0 && $handlers[count($handlers) - 1] != 'ob_gzhandler' && $handlers[count($handlers) - 1] != 'zlib output compression') {
        ob_end_clean();
        $handlers = ob_list_handlers();
    }

	header("Content-Type: application/json");

	$records = array();
	$db = JFactory::getDbo();
	$db->setQuery("Select * From #__facileforms_elements Where form = " . $db->quote(intval($_REQUEST['ff_form'])));

	$rows = $db->loadObjectList();
	$cnt = count($rows);

	for($i = 0; $i < $cnt; $i++)
	{
		$db->setQuery("Select * From #__facileforms_subrecords Where name = 'txt_nif_cif' And value = " . $db->quote($_REQUEST['txt_nif_cif']));
      
      	$sub = $db->loadObject();
      	
      	if($sub)
      	{
      		
      		{
      	           echo 'true';
      			continue;
      		}
    	}
        }
	      
}