title: How to implement countdown timer in django
body: <p>I just need a general idea.
  I'm developing a sports application in django. This application needs to measure time and display it to the user. During countdown I also need to perform some "action" which might occur. This means call another view according to a type of action, mark this action and redirect back to original view with timer where the user now can see the change.
  I suppose I can't implement countdown on server-side(django). I have to do this with JavaScript, but... the countdown stops everytime user performs an action. Do I have to use AJAX for this? Is't there a better way to achieve this. Thanks  </p>