var scrollPosistion;
PBRotator = Class.create();
Object.extend(Object.extend(PBRotator.prototype, Abstract.prototype), {
	initialize: function(wrapper, options,pageID,scrollPos){
	    this.scrolling  = false;
	    this.wrapper    = $(wrapper);
	    scrollPosistion = scrollPos;
	    //Depends on Page the scrolling section is changed. i.e. Size and width of the images. 
	    //17 - Affinity Page          19 - EMC & Utility partners page
	    if(pageID == "17")
	    {
	        this.scroller   = this.wrapper.down('div.affscroller');
	        this.sections   = this.wrapper.getElementsBySelector('div.affsection');
	    }
	    else if(pageID == "19")
	    {
	        this.scroller   = this.wrapper.down('div.EMCscroller');
	        this.sections   = this.wrapper.getElementsBySelector('div.EMCsection');
	    }
	    this.options    = Object.extend({ duration: 1.0, frequency: scrollPos }, options || {});

	    this.sections.each( function(section, index) {
	      section._index = index;
	    });    

	    this.events = {
	      click: this.click.bind(this)
	    };
	    this.options.initialSection ='Sec'+ scrollPos;
	    this.addObservers();
			if(this.options.initialSection) this.moveTo(this.options.initialSection, this.scroller, { duration:0 });  // initialSection should be the id of the section you want to show up on load
			if(this.options.autoGlide) this.start();
		
	  },
	
  addObservers: function() {
    var controls = this.wrapper.getElementsBySelector('div.controls a');
    controls.invoke('observe', 'click', this.events.click);
  },	

  click: function(event) {
		this.stop();
    var element = Event.findElement(event, 'a');
    if (this.scrolling) this.scrolling.cancel();
    
    this.moveTo(element.href.split("#")[1], this.scroller, { duration:this.options.duration });     
    Event.stop(event);
  },

	moveTo: function(element, container, options){
			this.current = $(element);

			Position.prepare();
	    var containerOffset = Position.cumulativeOffset(container),
	     elementOffset = Position.cumulativeOffset($(element));

		  this.scrolling 	= new Effect.SmoothScroll(container, 
				{duration:options.duration, x:(elementOffset[0]-containerOffset[0]), y:(elementOffset[1]-containerOffset[1])});
		  return false;
		},
		
  next: function(){
    if (this.current) {
      var currentIndex = this.current._index;
      var nextIndex = (this.sections.length - 1 == currentIndex) ? 0 : currentIndex + 1;      
    } else var nextIndex = 1;

    this.moveTo(this.sections[nextIndex], this.scroller, { 
      duration: this.options.duration
    });
  },
	
  previous: function(){
    var isEnd = false;
    if (this.current) {
      var currentIndex = this.current._index;
      //scrollPosistion - Rotation starting position 
      var prevIndex = (currentIndex <= 0) ? this.sections.length - scrollPosistion : 
       currentIndex - 1;
    } else var prevIndex = this.sections.length - scrollPosistion;
    
    if(prevIndex == this.sections.length - scrollPosistion)
    {
        this.moveTo(this.sections[prevIndex], this.scroller, { 
          duration: 0.00
        });
        this.previous();
    }
    else
    {
        this.moveTo(this.sections[prevIndex], this.scroller, { 
          duration: this.options.duration
        });
    }
  },

	stop: function()
	{
		clearTimeout(this.timer);
	},
	
	start: function()
	{
		this.periodicallyUpdate();
	},
		
	periodicallyUpdate: function()
	{ 
		if (this.timer != null) {
			clearTimeout(this.timer);
			this.next();
		}
		this.timer = setTimeout(this.periodicallyUpdate.bind(this), this.options.frequency*1000);
	}

});

Effect.SmoothScroll = Class.create();
Object.extend(Object.extend(Effect.SmoothScroll.prototype, Effect.Base.prototype), {
  initialize: function(element) {
    this.element = $(element);
    var options = Object.extend({
      x:    0,
      y:    0,
      mode: 'absolute'
    } , arguments[1] || {}  );
    this.start(options);
  },
  setup: function() {
    if (this.options.continuous && !this.element._ext ) {
      this.element.cleanWhitespace();
      this.element._ext=true;
      this.element.appendChild(this.element.firstChild);
    }
   
    this.originalLeft=this.element.scrollLeft;
    this.originalTop=this.element.scrollTop;
   
    if(this.options.mode == 'absolute') {
      this.options.x -= this.originalLeft;
      this.options.y -= this.originalTop;
    } 
  },
  update: function(position) {   
    this.element.scrollLeft = this.options.x * position + this.originalLeft;
    this.element.scrollTop  = this.options.y * position + this.originalTop;
  }
});