title: how to open specific page on Google's docs viewer
body: <p>I'm using google's docs viewer to show a pdf document in a html page and I would like to open the document starting on page 20 instead of 1 for example.</p>
  
  <p>There's hardly any documentation about Google's docs viewer service. They say in its webpage <a href="https://docs.google.com/viewer" rel="noreferrer">https://docs.google.com/viewer</a> that the service only accepts two parameters (url and embedded) but I've seen other parameters searching the web, like "a", "pagenumber", "v" and "attid", none of them did anything to me. I've tried to add #:0.page.19 at the end of my url (that's the id of the div containing page number 20 inside the body google creates) but it just ignores it or works in a random way.</p>
  
  <p>Do you guys know how to tell google docs viewer to show the document starting on a specific page?</p>