gistfile1.js

PP.Rotator = function(){
  _rotator = {
    _opts: {
      interval: 5,
      rotate: function(){}
    },

    _timer: null,

    start: function(){
      this.setTimer();
    },

    stop: function(){
      if (this._timer)
        window.clearTimeout(this._timer);
    },

    next: function(){
      this.reset();
      this._opts.rotate();
    },

    reset: function(){
      this.stop();
      this.start();
    },

    setTimer: function(){
      var that = this;
      that._timer = setTimeout(function(){
                      that._opts.rotate();
                      that.setTimer();
                    }, that._opts.interval * 1000);
    }
  };

  function init(opts){
    var self = $.extend(true, {}, _rotator);
    if (opts) $.extend(self._opts, opts);

    return self;
  };

  return {
    init: init
  };
}();