title: vBulletin redirect after login
body: <p>Facts:<br/>
  - main site on www.DOMAIN.com<br/>
  - vBulletin installed on forum.DOMAIN.com<br/>
  - vBulletin authentication integrated in main site (no problems here)<br/></p>
  
  <p>Question:<br/>
  How can I redirect user to some URL from the www subdomain upon authentication?<br/></p>
  
  <p>Extra info:<br/>
  I am already using the extra "url" field in the login form, but it only works
  for URLs relative to forum root (i.e. I can set it to "forum.php?...", but if
  I set it to "http://some_domain/" it is ignored and user is redirected to forum 
  home after authentication).</p>
  
  <p>Thanks,<br/>
  Puiu</p>