(function($){ $.fn.rotator = function(options){
   var defaults = {
		ms: 2000,
		n: 1,
		autoHeight: false
	};
  
   var options = $.extend(defaults, options);
	
	return this.each(function(index) {
		
		var $this = $(this);
		
		var initialHeight = 0;
		$this.children().filter(":lt("+options.n+")").each(function(index,item){
			initialHeight += $(item).height();
		});
		$this.height(initialHeight);

		setInterval(function(){
			var childHeight = $this.children().filter(":first-child").height();
			var animParams = {scrollTop: (childHeight) + "px"};
			var autoHeight = 0;
			$this.children().filter(":lt("+(options.n+1)+")").each(function(index,item){
				if(index>0)autoHeight += $(item).height();
			});
			if(options.autoHeight)animParams = $.extend({height:(autoHeight) + "px"}, animParams);
			
			$this.animate(animParams, 500, function(){
				$this.scrollTop(0);
				$this.append($this.children().filter(":first-child"));
				$this.css("overflow","hidden"); //hack para o Chrome
			});
		}, options.ms);
	});  
}})(jQuery);