text: /**
   * jQuery.serialScroll
   * Copyright (c) 2007-2008 Ariel Flesler - aflesler(at)gmail(dot)com | http://flesler.blogspot.com
   * Dual licensed under MIT and GPL.
   * Date: 3/20/2008
   *
   * @projectDescription Animated scrolling of series.
   * @author Ariel Flesler
   * @version 1.2.1
   *
   * @id jQuery.serialScroll
   * @id jQuery.fn.serialScroll
   * @param {Object} settings Hash of settings, it is passed in to jQuery.ScrollTo, none is required.
   * @return {jQuery} Returns the same jQuery object, for chaining.
   *
   * http://flesler.blogspot.com/2008/02/jqueryserialscroll.html
   *
   * Notes:
   *	- The plugin requires jQuery.ScrollTo.
   *	- The hash of settings, is passed to jQuery.ScrollTo, so its settings can be used as well.
   */
  ;(function( $ ){
  
  	var $serialScroll = $.serialScroll = function( settings ){
  		$.scrollTo.window().serialScroll( settings );
  	};
  
  	//Many of these defaults, belong to jQuery.ScrollTo, check it's demo for an example of each option.
  	//@see http://flesler.webs/jQuery.ScrollTo/
  	$serialScroll.defaults = {//the defaults are public and can be overriden.
  		duration:1000, //how long to animate.
  		axis:'x', //which of top and left should be scrolled
  		event:'click', //on which event to react.
  		start:0, //first element (zero-based index)
  		step:1, //how many elements to scroll on each action
  		lock:true,//ignore events if already animating
  		cycle:true, //cycle endlessly ( constant velocity )
  		constant:true //use contant speed ?
  		/*
  		navigation:null,//if specified, it's a selector a collection of items to navigate the container
  		target:null, //if specified, it's a selector to the element to be scrolled.
  		interval:0, //it's the number of milliseconds to automatically go to the next
  		lazy:false,//go find the elements each time (allows AJAX or JS content, or reordering)
  		stop:false, //stop any previous animations to avoid queueing
  		force:false,//force the scroll to the first element on start ?
  		jump: false,//if true, when the event is triggered on an element, the pane scrolls to it
  		items:null, //selector to the items (relative to the matched elements)
  		prev:null, //selector to the 'prev' button
  		next:null, //selector to the 'next' button
  		onBefore: function(){}, //function called before scrolling, if it returns false, the event is ignored
  		exclude:0 //exclude the last x elements, so we cannot scroll past the end
  		*/
  	};
  
  	$.fn.serialScroll = function( settings ){
  		settings = $.extend( {}, $serialScroll.defaults, settings );
  		var event = settings.event, //this one is just to get shorter code when compressed
  			step = settings.step, // idem
  			lazy = settings.lazy;//idem
  
  		return this.each(function(){
  			var 
  				context = settings.target ? this : document, //if a target is specified, then everything's relative to 'this'.
  				$pane = $(settings.target || this, context),//the element to be scrolled (will carry all the events)
  				pane = $pane[0], //will be reused, save it into a variable
  				items = settings.items, //will hold a lazy list of elements
  				active = settings.start, //active index
  				auto = settings.interval, //boolean, do auto or not
  				nav = settings.navigation, //save it now to make the code shorter
  				timer; //holds the interval id
  
  			if( !lazy )//if not lazy, go get the items now
  				items = getItems();
  
  			if( settings.force )
  				jump( {}, active );//generate an initial call
  
  			// Button binding, optionall
  			$(settings.prev||[], context).bind( event, -step, move );
  			$(settings.next||[], context).bind( event, step, move );
  
  			// Custom events bound to the container
  			if( !pane.ssbound )//don't bind more than once
  				$pane
  					.bind('prev.serialScroll', -step, move ) //you can trigger with just 'prev'
  					.bind('next.serialScroll', step, move ) //for example: $(container).trigger('next');
  					.bind('goto.serialScroll', jump ); //for example: $(container).trigger('goto', [4] );
  			if( auto )
  				$pane
  					.bind('start.serialScroll', function(e){
  						if( !auto ){
  							clear();
  							auto = true;
  							next();
  						}
  					 })
  					.bind('stop.serialScroll', function(){//stop a current animation
  						clear();
  						auto = false;
  					});
  			$pane.bind('notify.serialScroll', function(e, elem){//let serialScroll know that the index changed externally
  				var i = index(elem);
  				if( i > -1 )
  					active = i;
  			});
  			pane.ssbound = true;//avoid many bindings
  
  			if( settings.jump )//can't use jump if using lazy items and a non-bubbling event
  				(lazy ? $pane : getItems()).bind( event, function( e ){
  					jump( e, index(e.target) );
  				});
  
  			if( nav )
  				nav = $(nav, context).bind(event, function( e ){
  					e.data = Math.round(getItems().length / nav.length) * nav.index(this);
  					jump( e, this );
  				});
  
  			function move( e ){
  				e.data += active;
  				jump( e, this );
  			};
  			function jump( e, button ){
  				if( !isNaN(button) ){//initial or special call from the outside $(container).trigger('goto',[index]);
  					e.data = button;
  					button = pane;
  				}
  
  				var
  					pos = e.data, n,
  					real = e.type, //is a real event triggering ?
  					$items = settings.exclude ? getItems().slice(0,-settings.exclude) : getItems(),//handle a possible exclude
  					limit = $items.length,
  					elem = $items[pos],
  					duration = settings.duration;
  
  				if( real )//real event object
  					e.preventDefault();
  
  				if( auto ){
  					clear();//clear any possible automatic scrolling.
  					timer = setTimeout( next, settings.interval ); 
  				}
  
  				if( !elem ){ //exceeded the limits
  					n = pos < 0 ? 0 : limit - 1;
  					if( active != n )//we exceeded for the first time
  						pos = n;
  					else if( !settings.cycle )//this is a bad case
  						return;
  					else
  						pos = limit - n - 1;//invert, go to the other side
  					elem = $items[pos];
  				}
  
  				if( !elem || real && active == pos || //could happen, save some CPU cycles in vain
  					settings.lock && $pane.is(':animated') || //no animations while busy
  					real && settings.onBefore && //callback returns false ?
  					settings.onBefore.call(button, e, elem, $pane, getItems(), pos) === false ) return;
  
  				if( settings.stop )
  					$pane.queue('fx',[]).stop();//remove all its animations
  
  				if( settings.constant )
  					duration = Math.abs(duration/step * (active - pos ));//keep constant velocity
  
  				$pane
  					.scrollTo( elem, duration, settings )//do scroll
  					.trigger('notify.serialScroll',[pos]);//in case serialScroll was called on this elem more than once.
  			};
  			function next(){//I'll use the namespace to avoid conflicts
  				$pane.trigger('next.serialScroll');
  			};
  			function clear(){
  				clearTimeout(timer);
  			};
  			function getItems(){
  				return $( items, pane );
  			};
  			function index( elem ){
  				if( !isNaN(elem) ) return elem;//number
  				var $items = getItems(), i;
  				while(( i = $items.index(elem)) == -1 && elem != pane )//see if it matches or one of its ancestors
  					elem = elem.parentNode;
  				return i;
  			};
  		});
  	};
  
  })( jQuery );