$(document).ready(function() {
                $("#formj").submit(function(){

                    var option = $("input[name='option']:checked").val();
                    var revip = $("#revip").val();
                    $.ajax({
                        type: "POST",
                        url: "tool.php",
                        data: "revip="+ revip + "&option" + option,

                        dataType: "html",
                        success: function(data)
                        {
                            $("#risultato").html(data);
                        },
                        error: function()
                        {
                            alert("Errore...");
                        }
                    });
                });
            });