title: How to make mechanize wait for web-page 'full' load?
body: <p>I want to scrape some web page which loads its components dynamically.
  This page has an onload script, and I can see the complete page 3-5 seconds after typing the URL into my browser.</p>
  
  <p>The problem is, when I call <code>br.open('URL')</code>, the response is the web page at 0 seconds.
  There is a difference 3-5 seconds later between the HTML (which I want) and result of <code>br.open('URL')</code>.</p>