           }).fadeIn(250);
                            current_block = parseInt(data["current_block"]);
                        }
                        if (block_height != parseInt(data["block_height"])) {
                            $("#block_height").fadeOut(250, function() {
                                $(this).text(data["block_height"]);
                            }).fadeIn(250);
                            block_height = parseInt(data["block_height"]);
                        }
                  