;
                            d=document.getElementsByClassName("line-numbers");
                            d[0].scrollTop = d[0].children[1].offsetTop;
                            return;
                        }

                        if (xhr.status === 404) {
                            code.textContent = '✖ Error: File could not be found';
                            return;
                        }

                        if (xhr.status >= 400) {
                            code.textContent = '