title: How to stop automatic facebook login in my website?
body: <p>i have a site which has a facebook login button. if i am logged in facebook on same browser, and clicks on website login button, it redirects me to the profile page without asking option to login via facebook or via form. i will add google plus button also in future.</p>
  
  <p>so please tell me how to stop this automatic login in facebook.</p>