document.getElementById('forum_embed').src =
'https://groups.google.com/forum/embed/?place=forum/matheduuntad'
+ '&showsearch=true&showpopout=true&showtabs=false'
+ '&parenturl=' + encodeURIComponent(window.location.href);
body{background:#eee;}
#main-wrapper{width:100%;border:1px solid #ccc;}
#sidebar-wrapper, .breadcrumbs, #comments, .post-footer, #blog-pager{display:none}
...