title: unable to remove firefox session cookies
body: <p>due to the fact that my users have configured their sessions to reopen each time they reopen their firefox browser. the 'session' cookies come back.
  but my website needs fresh authentication if the session cookie is not present or 24 hours old. so I am having this problem of needing to manually remove the expired cookies each time i reopen browser after 24 hours.</p>
  
  <p>to combat this, i tired to put a 'Logout' link on my page which should have helped me. but unfortunately it is not helping...</p>
  
  <p>i tried below code to remove the cookies, but it seems it does not remove the cookies from the sqilte table in which firefox stores its cookies. After the following code is run, cookies reappear.. (or are they not getting removed???) how can i achieve that?</p>
  
  <p>code:</p>
  
  <pre><code>function Delete_Cookie( name, path, domain )
  {
      document.cookie=name+"="+((path) ? ";path="+path:"")+((domain)?";domain="+domain:"")+";expires=Thu, 01 Jan 1970 00:00:01 GMT";
  }
  
  $("#Logout").click(function() {
      Delete_Cookie('SecOne','/','.mydomain.com');
      Delete_Cookie('SecTwo','/','.mydomain.com');
      alert("Bye");
  });
  </code></pre>