title: Why doesn't document.cookie show all the cookie for the site?
body: <p>I go to a forum which uses vBulletin 3.8. When I log in, I use firebug to see what cookies were set. I see these cookies:</p>
  
  <blockquote>
    <p>__utmb, __utmc, __utma, __utmz, bbsessionhash, vbseo_loggedin, bbpassword, bbuserid, bblastactivity, bblastvisit</p>
  </blockquote>
  
  <p>They all had a value set, and the domain was identical. </p>
  
  <p>But when I use JavaScript to view them, it only saw these cookies:</p>
  
  <blockquote>
    <p>__utmb, __utmc, __utma, __utmz, vbseo_loggedin,  bblastactivity, bblastvisit</p>
  </blockquote>
  
  <p>In firebug, I only see these three cookies: bbsessionhash, bbpasword and bbuserid, that were actually set. HTTPOnly in column HTTPOnly. What does it mean and is that the reason I can't see those cookies in JavaScript using <code>document.cookie</code>?</p>