text: /**
  * Set Interval
  * (c) 2013 Bill, BunKat LLC.
  *
  * Works similar to setInterval() but allows you to specify a Later schedule
  * instead of milliseconds.
  *
  * Later is freely distributable under the MIT license.
  * For all details and documentation:
  *     http://github.com/bunkat/later
  */
  
  later.setInterval = function(fn, sched) {
    if (!fn) {
      return;
    }
  
    var t = later.setTimeout(scheduleTimeout, sched),
        done = t.isDone();
  
    /**
    * Executes the specified function and then sets the timeout for the next
    * interval.
    */
    function scheduleTimeout() {
      if(!done) {
        fn();
        t = later.setTimeout(scheduleTimeout, sched);
      }
    }
  
    return {
  
      isDone: function() {
        return t.isDone();
      },
  
      /**
      * Clears the timeout.
      */
      clear: function() {
        done = true;
        t.clear();
      }
  
    };
  
  };