title: javascript get html timezone dropdown
body: <p>I want to make a html timezone dropdown which will give me result like:</p>
  
  <pre><code>&lt;select name="timezone"&gt;
      &lt;option value="Europe/London"&gt;(GMT) London&lt;/option&gt;
      ....
      ....
  &lt;/select&gt;
  </code></pre>
  
  <p>Is there any javascript library which will give me this result ?? 
  Need help</p>