/** -------------------- recomana -----------------*/
function sendRecommend() {
	// enviar
	$('frm_recommend').request({
		onSuccess: function(transport) {
			var response = transport.responseText || "no response text";
			if (response == 'OK') {
				$('rec_sendok').show();
				$('bt_send_recommend').hide();
			}
			else {
				$('rec_sendok').update(response).show();
				$('bt_send_recommend').enable();
			}
		},
		onFailure: function() { alert('Error calling Ajax...') },
		onLoading: function() { $('bt_send_recommend').disable(); /*$('bt_send_recommend').value='Enviant...';*/ }
	});
	return false;
}