title: Page down with Javascript/jQuery?
body: <p>How do I perform a &quot;page down&quot; operation with Javascript/jQuery so that it <strong>works correctly if the user has zoomed in/out</strong>?</p>
  <p>i.e. it should scroll no more and no less than would happen if the user had actually pressed the key, whether or not the user had messed up the zoom settings or fonts or DPI or whatever.</p>
  <h3>Notes:</h3>
  <ul>
  <li><p>There may not be any particular element at the target position. I just want to &quot;page down&quot;, not caring whether there's a particular element at the destination. (i.e. I can't use <code>scrollTo</code>.)</p>
  </li>
  <li><p>Also, animation would be great, but not required. :)</p>
  </li>
  </ul>