title: How can I detect visited and unvisited links on a page?
body: <p>My aim is to detect the unvisited links on a webpage and then create a greasemonkey script to click on those links. By unvisited links here I mean the links which are not opened by me. Since I can see all the browser provide capability to change the color of visited and unvisited link is it possible to detect these links in any manner. 
  While searching I came upon this link: <a href="http://www.mozdev.org/pipermail/greasemonkey/2005-November/006821.html" rel="noreferrer">http://www.mozdev.org/pipermail/greasemonkey/2005-November/006821.html</a> but someone here told me that this is no longer possible. Please help.</p>