display osu!direct button without login

// ==UserScript==
// @name        osu!direct link
// @namespace   osu
// @include     https://osu.ppy.sh/s/*
// @include     https://osu.ppy.sh/b/*
// @include     http://osu.ppy.sh/s/*
// @include     http://osu.ppy.sh/b/*
// @version     1
// @grant       none
// ==/UserScript==
if ($('a.login-open-button').length)
{
  var btn_1 = '<div class="beatmapDownloadButton"><a href="osu://dl/';
  var btn_2 = '"><img src="//s.ppy.sh/images/osu-download-direct.png"></a></div>';
  var s = $('div.posttext a').attr('onclick');
  s = btn_1 + s.substring(12, s.length - 1) + btn_2;
  $('div.paddingboth').prepend(s);
}