(function($){
	$.slider = function(el, options){
  var base = this;
		
  base.$el = $(el);
  base.el = el; 
		
  base.currentPage = 1;
		base.timer = null;
		base.playing = false;
		
  base.$el.data("slider", base);
  
		base.init = function(){
  	base.options = $.extend({},$.slider.defaults, options);
			
			base.$wrapper = base.$el.find('> div').css('overflow', 'hidden');
   base.$slider  = base.$wrapper.find('> ul');
   base.$items   = base.$slider.find('> li');
   base.$single  = base.$items.filter(':first');
			
			if(base.options.buildNavigation) base.buildNavigation();
			
   base.singleWidth = base.$single.outerWidth();
   base.pages = base.$items.length;

   base.$items.filter(':first').before(base.$items.filter(':last').clone().addClass('cloned'));
   base.$items.filter(':last' ).after(base.$items.filter(':first').clone().addClass('cloned'));
			base.$items = base.$slider.find('> li'); // reselect
            
			base.buildNextBackButtons();
			if(base.options.autoPlay) {
				base.playing = !base.options.startStopped; // Sets the playing variable to false if startStopped is true
				base.buildAutoPlay();
			};
			
			// If pauseOnHover then add hover effects
			if(base.options.pauseOnHover) {
				base.$el.hover(function(){
					base.clearTimer();
				}, function(){
					base.startStop(base.playing);
				});
			}
			
			// If a hash can not be used to trigger the plugin, then go to page 1
			if((base.options.hashTags == true && !base.gotoHash()) || base.options.hashTags == false){
				base.setCurrentPage(1);
			};
  };

		base.gotoPage = function(page, autoplay){
			// When autoplay isn't passed, we stop the timer
			if(autoplay !== true) autoplay = false;
			if(!autoplay) base.startStop(false);
			
			if(typeof(page) == "undefined" || page == null) {
				page = 1;
				base.setCurrentPage(1);
			};
			
			// Just check for bounds
			if(page > base.pages + 1) page = base.pages;
			if(page < 0 ) page = 1;

			var dir = page < base.currentPage ? -1 : 1,
   n = Math.abs(base.currentPage - page),
   left = base.singleWidth * dir * n;
			
			base.$wrapper.filter(':not(:animated)').animate({
   	scrollLeft : '+=' + left
   }, base.options.animationTime, base.options.easing, function () {
   	if (page == 0) {
    	base.$wrapper.scrollLeft(base.singleWidth * base.pages);
					page = base.pages;
    } else if (page > base.pages) {
    	base.$wrapper.scrollLeft(base.singleWidth);
     // reset back to start position
     page = 1;
    };
				base.setCurrentPage(page);
			});
		};
		
		base.setCurrentPage = function(page, move){
			// Set visual
			if(base.options.buildNavigation){
				base.$nav.find('.cur').removeClass('cur');
				$(base.$navLinks[page - 1]).addClass('cur');	
			};
			
			// Only change left if move does not equal false
			if(move !== false) base.$wrapper.scrollLeft(base.singleWidth * page);

			// Update local variable
			base.currentPage = page;
		};
		
		base.goForward = function(autoplay){
			if(autoplay !== true) autoplay = false;
			base.gotoPage(base.currentPage + 1, autoplay);
		};
		
		base.goBack = function(){
			base.gotoPage(base.currentPage - 1);
		};
		
		// This method tries to find a hash that matches panel-X
		// If found, it tries to find a matching item
		// If that is found as well, then that item starts visible
		base.gotoHash = function(){
			if(/^#?panel-\d+$/.test(window.location.hash)){
				var index = parseInt(window.location.hash.substr(7));
				var $item = base.$items.filter(':eq(' + index + ')');
				if($item.length != 0){
					base.setCurrentPage(index);
					return true;
				};
			};
			return false; // A item wasn't found;
		};
        
		// Creates the numbered navigation links
		base.buildNavigation = function(){
			base.$nav = $("<div id='thumbNav'></div>").appendTo(base.$el);
			base.$items.each(function(i,el){
				var index = i + 1;
				var $a = $("<a href='#'></a>");
				
				// If a formatter function is present, use it
				if( typeof(base.options.navigationFormatter) == "function"){
					$a.html(base.options.navigationFormatter(index, $(this)));
				} else {
					$a.text(index);
				}
				$a.click(function(e){
     base.gotoPage(index);
                    
     if (base.options.hashTags)
					base.setHash('panel-' + index);
					e.preventDefault();
				});
				base.$nav.append($a);
			});
			base.$navLinks = base.$nav.find('> a');
		};
		
		
		// Creates the Forward/Backward buttons
		base.buildNextBackButtons = function(){
			var $forward = $('<a class="arrow forward"></a>'), //var $forward = $('<a class="arrow forward">></a>'),
			$back    = $('<a class="arrow back"></a>'); //$back    = $('<a class="arrow back"><</a>');
				
   // Bind to the forward and back buttons
   $back.click(function(e){
   	base.goBack();
				e.preventDefault();
   });

   $forward.click(function(e){
   	base.goForward();
				e.preventDefault();
   });

			// Append elements to page
			//base.$wrapper.after($back).after($forward); //COMMENTED OUT BY MA DEC 2009 TO PREVENT SCRIPT FROM RENDERING TO PAGE
		};
		
		// Creates the Start/Stop button
		base.buildAutoPlay = function(){
			base.$startStop = $("<a href='#' id='start-stop'></a>").html(base.playing ? base.options.stopText :  base.options.startText);
			base.$el.append(base.$startStop);            
   base.$startStop.click(function(e){
				base.startStop(!base.playing);
				e.preventDefault();
   });

			// Use the same setting, but trigger the start;
			base.startStop(base.playing);
		};
		
		// Handles stopping and playing the slideshow
		// Pass startStop(false) to stop and startStop(true) to play
		base.startStop = function(playing){
			if(playing !== true) playing = false; // Default if not supplied is false
			
			// Update variable
			base.playing = playing;
			
			// Toggle playing and text
			if(base.options.autoPlay) base.$startStop.toggleClass("playing", playing).html( playing ? base.options.stopText : base.options.startText );
			
			if(playing){
				base.clearTimer(); // Just in case this was triggered twice in a row
				base.timer = window.setInterval(function(){
					base.goForward(true);
				}, base.options.delay);
			} else {
				base.clearTimer();
			};
		};
		
		base.clearTimer = function(){
			// Clear the timer only if it is set
			if(base.timer) window.clearInterval(base.timer);
		};
		
		// Taken from AJAXY jquery.history Plugin
		base.setHash = function ( hash ) {
			// Write hash
			if ( typeof window.location.hash !== 'undefined' ) {
				if ( window.location.hash !== hash ) {
					window.location.hash = hash;
				};
			} else if ( location.hash !== hash ) {
				location.hash = hash;
			};
			
			// Done
			return hash;
		};
		// <-- End AJAXY code


		// Trigger the initialization
  base.init();
 };

	$.slider.defaults = {
  easing: "swing",                // Anything other than "linear" or "swing" requires the easing plugin
  autoPlay: true,                 // This turns off the entire FUNCTIONALY, not just if it starts running or not
  startStopped: false,            // If autoPlay is on, this can force it to start stopped
  delay: 3000,                    // How long between slide transitions in AutoPlay mode
  animationTime: 600,             // How long the slide transition takes
  hashTags: true,                 // Should links change the hashtag in the URL?
  buildNavigation: true,          // If true, builds and list of anchor links to link to each slide
  pauseOnHover: true,             // If true, and autoPlay is enabled, the show will pause on hover
		startText: "Start",             // Start text
		stopText: "Stop",               // Stop text
		navigationFormatter: null       // Details at the top of the file on this use (advanced use)
 };
	

 $.fn.slider = function(options){
		if(typeof(options) == "object"){
		 return this.each(function(i){			
				(new $.slider(this, options));

	  	// This plugin supports multiple instances, but only one can support hash-tag support
				// This disables hash-tags on all items but the first one
				options.hashTags = false;
	  });	
		} else if (typeof(options) == "number") {
			return this.each(function(i){
				var anySlide = $(this).data('slider');
				if(anySlide){
					anySlide.gotoPage(options);
				}
			});
		}
 };
})(jQuery);