title: how to remain the count down time not beginning at first each time?
body: <pre><code>$(function() {
      var count = 20;
      countdown = setInterval(function() {
          $("p.countdown").html(count + "seconds remailing!");
  
          if (count == 0) {
              window.location = 'http://stackoverflow.com/';
          }
  
          count--;
      }, 1000);
  });​
  
  &lt;p class="countdown"&gt;
  </code></pre>
  
  <p>Each time when i refresh the browser, the count down is beginning at 20. i want to when i refresh the browser. the count number not beginning at 20 each time. it begins from the actually time it beginning, how to do some changes to the code?</p>