title: logout button in FaceBook SDK
body: <p>I have this fb-login button on my website and it works pretty okay. 
  How can I implement an logout button? Below is my code for the login part.</p>
  
  <pre><code>&lt;fb:login-button size="small" onlogin="RedirectLogon();" perms="email,user_birthday" autologoutlink="true"&gt;
      &lt;%=LanguageManager.Instance.Translate("root/facebook/login")%&gt;
  &lt;/fb:login-button&gt;
  </code></pre>