diversion.user.js

// ==UserScript==
// @name          More Diversion
// @namespace     http://github.com/porras
// @description   Fixes some Diversion bugs client-side ;-)
// @include       http://diversion.r09.railsrumble.com/*
// ==/UserScript==

$ = unsafeWindow.jQuery

$(document).ready(function() {
  $("a.author").each(function() {
    $(this).attr('href', $(this).siblings("a.document:first").attr('href').replace(/\/\d+$/, ''));
  });
});