title: How to move fixed position
body: <pre><code>http://www.globalguideline.com/interview_questions/Questions.php?sc=C_Sharp_Programming_Language_Interview_Questions_A&amp;page=6
  </code></pre>
  <p>In this URL, a user sees on the left side a Twitter picture move. How to do it. <strong>What's this technique name? How to do that?</strong></p>