Javascript Count up/down script to show the time since logged in
<p>I've been googling but could not get the correct script.  Maybe someone can point me in the correct direction?</p>

<p>I need to show the time a user has been active on the site since accessing a certain page.  I am busy with a testing site and the user has for example 1 hour to complete a test so I need to show the time the user has been busy on the test.  </p>

<p>I've tried this site:  <a href="http://javascriptkit.com/script/cut9.shtml" rel="nofollow">http://javascriptkit.com/script/cut9.shtml</a> but since I don't know javascript I don't know how to set the time to the time the person has accessed the page.</p>
