title: Make tab position fixed on scrolling
body: <p>I like the idea of the  tab of this website:
  <a href="http://www.usatoday.com/" rel="nofollow">http://www.usatoday.com/</a></p>
  
  <p>When scrolling bellow the logo, 
  1- The Tab gets fixed.
  2- A smaller logo goes into the tab.</p>
  
  <p>Or, you can say, something similar to Google plus tab.
  How can I do this.. 
  * I am database developer and have just a background in web tech.</p>
  
  <p>Thanks for help.
  Regards,</p>