title: jQuery -given a div, extend the div's height to reach the bottom
body: <p>Given a div on a page like <code>&lt;div id="rightRail&gt;xxx&lt;/div&gt;</code></p>
  
  <p>Is it possible to some how magically make that div's height resize on broswer load/resize so that the height reaches the bottom of the window? It would be easier if the div was at the top of the page, but it isnt. thanks</p>