title: use jquery to animate lines of text
body: <p>I have a paragragh of text.</p>
  
  <pre><code>&lt;p&gt;
  line1
  line2
  line3
  &lt;/p&gt;
  </code></pre>
  
  <p>intially all the text are red
  when a button is pressed
  each line's color changes to black gradually (2 sec each line)</p>
  
  <p>can this be done with only jquery?</p>