title: scroll bar on div with overflow:auto and percentage height
body: <p>Is it possible to create a div that adjusts to the size of the browser and is also scrollable?
  I want to use <code>overflow:auto</code> on the div and percentage height of <code>90%</code>.</p>
  
  <p>The structure of the page is</p>
  
  <pre><code>&lt;body style="height:100%"&gt;
  &lt;div id=header style="height:100%"&gt;headerinfo&lt;/div&gt;
  &lt;div id=content style="height:100%;overflow:auto"&gt;content which is replaced dynamically&lt;/div&gt;
  &lt;/body&gt;
  </code></pre>
  
  <p>Will <code>overflow:auto</code> work without a known <code>px</code> height somewhere in the hierarchy?</p>