gistfile1.js

(function(){
    var dc=document;
    var t=dc.title;
    var u=location.href;
    var f=dc.createElement('form');
    f.action='http://mixi.jp/add_diary.pl?id=374297';
    f.method='post';
    f.name='mixi';
    f.innerHTML='<input type="hidden" name="diary_body" value="'+t+"¥n"+u+'">'
               +'<input type="hidden" name="news_title" value="'+t+'">';
    dc.body.appendChild(f);
    dc.forms[dc.forms.length-1].submit()
})();