function chama_form(){
    var url = "/indique";
    new Ajax(url, {
                  method: 'get',
                  encoding: 'iso-8859-1',
                  update: $('response')
                  }).request();
}

function indicar(){
    $('url').value = document.location;
    $('titulo').value = $('tit_indique').getText();
    new Ajax("/indique/", {
                   method: 'post',
                   data: $('form'),
                   update: $('response')
                   }).request();
}