title: Resume a function after clearInterval
body: <p>I have this code:</p>
  
  <pre><code>jQuery(function($) { // DOM is ready
      var $el = $("header tr"),
          tot = $el.length,
          c = 0;
      var timer = setInterval(function() {
          $el.removeClass("current").eq(++c % tot).addClass("current");
      }, 3000);
      $el.first().addClass("current");
      $el.on({
          mouseenter: function(e) {
              clearInterval(timer);
          }
      });
      $el.mouseout({
          timer;
      });
  });
  </code></pre>
  
  <p>I want to suspend the function on mouseover and resume it on mouse out but I cant get the latter right. How can I resume it?</p>
  
  <p>Thank you.</p>