title: Popup Div anchor at mouse hover/click
body: <p>I am new in Web Programming. </p>
  
  <p>I want to implement something like in facebook, when we hover our mouse on the link, a arrow-floating-div that anchor on the link will be showed on top of it. </p>
  
  <p>How do you all address that kind of component? The closest library that I found is <a href="http://gristmill.github.com/jquery-popbox/" rel="nofollow">http://gristmill.github.com/jquery-popbox/</a> This does not work sometime, in some browser. Further search for "Popbox" does not show any useful result. Can anyone recommend any similar library like the link I posted? It can be using Jquery, Javascript, CSS, html or etc.</p>
  
  <p>Instead of using library, can anyone show me how to do it without using library, in a simplest of way. I just want to know the rough idea behind. Most of the library come with complicated code, is hard to learn for beginner.</p>
  
  <p>Thank very much in advanced.</p>