sexyTime is a small jQuery plugin for short countdown timers.

sexyTime.js

(function ($) {
  $.fn.sexyTime = function (options) {
    var opts = $.extend({}, $.fn.sexyTime.defaults, options);
    var time = opts.time;
    
    return this.each(function() {
      var position = $(this).position();
      $(this).css("z-index", "100");
      $(this).css("position", "relative");
      $(this).css("text-align", "center");
      $(this).css("margin", "0px");
      $(this).html(opts.time);
      
      var $timer = $("<div class='sexyTimer'></div>");
      $timer.attr("time", opts.time);
      $timer.css("z-index", "5");
      $timer.css("background", opts.color);
      $timer.css("position", "absolute");
      $timer.css("top", position.top);
      $timer.css("left", position.left - $(this).width());
      $timer.css("display", "block");
      $timer.css("border-radius", "100px");
      $timer.height($(this).width());
      $timer.width($(this).width());
      $("body").append($timer);
      
      $(this).width($timer.width());
      
      setInterval($.proxy(function(){
        time = time - 1;
        if (time >= 0) {
          $(this).html(time);
          shrink($timer, time);
        }
      }, this), 1000);
      
      function shrink (target, time) {
        var width = $(target).width() / 2 / time;
        var toWidth = $(target).width() - width;
        var margin = $(target).width() / time / 4;
        $(target).width(toWidth);
        $(target).height(toWidth);
        $(target).css("top", $(target).position().top + margin);
        $(target).css("left", $(target).position().left + margin);
      }
    });
  };
  $.fn.sexyTime.defaults = {
    time: 10,
    color: "#ACACAC"
  };
}(jQuery));

sexyTimeDemo.html

<script src="https://code.jquery.com/jquery-2.1.3.min.js"></script>
<div id="timer"></div>
<script>
    $("#timer").sexyTime({time: 10});
</script>

<!--The #timer element would be replaced instantly with the number 10 and a grey circle behind it-->
<!--Each second after initiation, the number in the element would go down by one, and the circle will shrink-->