title: basic idea of a custom tooltip, using pure Javascript
body: <p>I need basic idea of creating a custom tooltip using pure <code>Javascript</code> code;</p>
  
  <p><em>What I want :</em></p>
  
  <p><strong>For example :</strong></p>
  
  <pre><code>&lt;a href="#" onmousemover="tooltip('text')"&gt;Link Text&lt;/a&gt;
  </code></pre>
  
  <p>And <code>onmouseover</code> I want to display a custom tooltip with <code>fixed position</code> based on <code>&lt;a&gt;</code>'s element <code>position</code>, to start from <code>right:0</code> or from <code>left:0</code> of the <code>&lt;a&gt;</code> element;</p>