title: set user (access token) within FB.init
body: <p>i want to publish story to user timeline even when they were not login with facebook. Actually I stored user access token in the database, if the user login in with email, i'll retrieve the access token for her. It works well in php (e.g get friends list after setAccessToken(token_from_database), but when i post the story, it always post to current fb login account's timeline. </p>
  
  <p>I think the problem is caused by fb.init:</p>
  
  <pre><code>window.fbAsyncInit = function() {
          FB.init({
              appId      : 'XXX', // App ID
              status     : true, // check login status
              cookie     : true // enable cookies to allow the server to access the session
              xfbml      : true  // parse XFBML
          });
      };
  </code></pre>
  
  <p>and later:  </p>
  
  <pre><code>FB.api('/me/...
  </code></pre>
  
  <p>take login account as "me", not the one I set in php through setAcccessToken. 
  How could i post to that account (specify with token_from_database) 's timeline? any idea?</p>