function enviar(form,acao,inc,extra){
    if (form!=""){
        F = document.getElementById(form);
        E = document.getElementById('inc');
    } else {
        F = udf_cria_form('udf_submit','index.php' );
        document.appendChild(F);
    }
    if (!E){
        E = udf_cria_hidden('inc',inc);
        F.appendChild(E);
    }
    
    E = udf_cria_hidden('sessao',js_enviar);
    F.appendChild(E);
    
    E = udf_cria_hidden('acao',acao);
    F.appendChild(E);
    
    if (extra){
        E = udf_cria_hidden('extra',extra);
        F.appendChild(E);
    }
    F.submit();
}

var mywindow;
function abre_janela(url,name,w,h,options){
    w = 680;
    h = 370;
    if (!options) options = "resizable=no,toolbar=0,status=0,menubar=0,scrollbars=0, width=" + w + ",height=" + h + ",left="+(screen.width-w)/2+",top="+(screen.height-h)/6; 
    mywindow = window.open('ht'+'tp'+url,name,options);
    mywindow.focus();
}