title: get URL Parameters from current URL using Prototype JavaScript
body: <p>I'm noob to JavaScript and want to use <a href="http://www.prototypejs.org" rel="nofollow">Prototype JS</a> Framework to get some URL parameters.
  Imagine I have the following URL on my current browser:</p>
  
  <pre><code>http://www.somewhere.com?param=abc
  </code></pre>
  
  <p>how can I get the value of <code>'param'</code> using any function or utility of <a href="http://www.prototypejs.org" rel="nofollow">Prototype JS</a> ?</p>