title: Hide a link when clicked on
body: <p>I have a page that shows links with "x new comments". Then I click a link I want to hide that link. When I click the back button to come back to my page I want that link to still be hidden (I've now seen the comments so they are no longer new).</p>
  
  <p>Can this be done with simple javascript? I don't want to reload the original page for performance reasons.</p>