title: Navigation fade in after scroll down?
body: <p>I would like to get a navigation exactly like this website : <a href="http://www.interviewmagazine.com/" rel="nofollow">http://www.interviewmagazine.com/</a></p>
  
  <p>A navigation bar appears after scrolling down about 700 pixels or so..  its a fixed nav with fade in effect and has a fade out effect when you scroll back to top.</p>
  
  <p>I tried to see how they did their code but i couldnt figure it out.</p>
  
  <p>sounds like mootools tho?</p>
  
  <p>If someone can help that would be awesome.  thanks!</p>