[urlparam htmltag="option" attr="value" param="salida" /] [urlparam param="salida" default="Elige un punto de partida" /] [urlparam htmltag="option" attr="value" param="destino" /] [urlparam param="destino" default="Elige un destino" /] [ifurlparam param="salida" empty="1"][/ifurlparam] [ifurlparam param="destino" empty="1"][/ifurlparam]