/*
* jQuery Cycle Lite Plugin
* http://malsup.com/jquery/cycle/lite/
* Copyright (c) 2008-2011 M. Alsup
* Version: 1.3 (01-JUN-2011)
* Dual licensed under the MIT and GPL licenses:
* http://www.opensource.org/licenses/mit-license.php
* http://www.gnu.org/licenses/gpl.html
* Requires: jQuery v1.3.2 or later
*/
;(function($) {
	
	var ver = 'Lite-1.3';
	
	$.fn.cycle = function(options) {
		return this.each(function() {
			options = options || {};
			
			if (this.cycleTimeout) clearTimeout(this.cycleTimeout);
				 this.cycleTimeout = 0;
			this.cyclePause = 0;
			
			var $cont = $(this);
			var $slides = options.slideExpr ? $(options.slideExpr, this) : $cont.children();
			var els = $slides.get();
			if (els.length < 2) {
				window.console && console.log('terminating; too few slides: ' + els.length);
				return; // don't bother
			}
			
			// support metadata plugin (v1.0 and v2.0)
			var opts = $.extend({}, $.fn.cycle.defaults, options || {}, $.metadata ? $cont.metadata() : $.meta ? $cont.data() : {});
			var meta = $.isFunction($cont.data) ? $cont.data(opts.metaAttr) : null;
			if (meta)
				opts = $.extend(opts, meta);
			
			opts.before = opts.before ? [opts.before] : [];
			opts.after = opts.after ? [opts.after] : [];
			opts.after.unshift(function(){ opts.busy=0; });
			
			// allow shorthand overrides of width, height and timeout
			var cls = this.className;
			opts.width = parseInt((cls.match(/w:(\d+)/)||[])[1]) || opts.width;
			opts.height = parseInt((cls.match(/h:(\d+)/)||[])[1]) || opts.height;
			opts.timeout = parseInt((cls.match(/t:(\d+)/)||[])[1]) || opts.timeout;
			
			if ($cont.css('position') == 'static') 
				$cont.css('position', 'relative');
			if (opts.width) 
				$cont.width(opts.width);
			if (opts.height && opts.height != 'auto') 
				$cont.height(opts.height);
			
			var first = 0;
			$slides.css({position: 'absolute', top:0, left:0}).each(function(i) { 
				$(this).css('z-index', els.length-i) 
			});
			
			$(els[first]).css('opacity',1).show(); // opacity bit needed to handle reinit case
			if ($.browser.msie) els[first].style.removeAttribute('filter');
									     
									     if (opts.fit && opts.width) 
										     $slides.width(opts.width);
									     if (opts.fit && opts.height && opts.height != 'auto') 
										     $slides.height(opts.height);
									     if (opts.pause) 
										     $cont.hover(function(){this.cyclePause=1;}, function(){this.cyclePause=0;});
									     
									     var txFn = $.fn.cycle.transitions[opts.fx];
			txFn && txFn($cont, $slides, opts);
			
			$slides.each(function() {
				var $el = $(this);
				this.cycleH = (opts.fit && opts.height) ? opts.height : $el.height();
				this.cycleW = (opts.fit && opts.width) ? opts.width : $el.width();
			});
			
			if (opts.cssFirst)
				$($slides[first]).css(opts.cssFirst);
			
			if (opts.timeout) {
				// ensure that timeout and speed settings are sane
				if (opts.speed.constructor == String)
					opts.speed = {slow: 600, fast: 200}[opts.speed] || 400;
				if (!opts.sync)
					opts.speed = opts.speed / 2;
				while((opts.timeout - opts.speed) < 250)
					opts.timeout += opts.speed;
			}
			opts.speedIn = opts.speed;
			opts.speedOut = opts.speed;
			
			opts.slideCount = els.length;
			opts.currSlide = first;
			opts.nextSlide = 1;
			
			// fire artificial events
			var e0 = $slides[first];
			if (opts.before.length)
				opts.before[0].apply(e0, [e0, e0, opts, true]);
			if (opts.after.length > 1)
				opts.after[1].apply(e0, [e0, e0, opts, true]);
			
			if (opts.click && !opts.next)
				opts.next = opts.click;
			if (opts.next)
				$(opts.next).bind('click', function(){return advance(els,opts,opts.rev?-1:1)});
			if (opts.prev)
				$(opts.prev).bind('click', function(){return advance(els,opts,opts.rev?1:-1)});
			
			if (opts.timeout)
				this.cycleTimeout = setTimeout(function() {
					go(els,opts,0,!opts.rev)
				}, opts.timeout + (opts.delay||0));
		});
	};
	
	function go(els, opts, manual, fwd) {
		if (opts.busy) return;
					  var p = els[0].parentNode, curr = els[opts.currSlide], next = els[opts.nextSlide];
		if (p.cycleTimeout === 0 && !manual) 
			return;
		
		if (manual || !p.cyclePause) {
			if (opts.before.length)
				$.each(opts.before, function(i,o) { o.apply(next, [curr, next, opts, fwd]); });
			var after = function() {
				if ($.browser.msie)
					this.style.removeAttribute('filter');
				$.each(opts.after, function(i,o) { o.apply(next, [curr, next, opts, fwd]); });
			};
			
			if (opts.nextSlide != opts.currSlide) {
				opts.busy = 1;
				$.fn.cycle.custom(curr, next, opts, after);
			}
			var roll = (opts.nextSlide + 1) == els.length;
			opts.nextSlide = roll ? 0 : opts.nextSlide+1;
			opts.currSlide = roll ? els.length-1 : opts.nextSlide-1;
		}
		if (opts.timeout)
			p.cycleTimeout = setTimeout(function() { go(els,opts,0,!opts.rev) }, opts.timeout);
	};
	
	// advance slide forward or back
	function advance(els, opts, val) {
		var p = els[0].parentNode, timeout = p.cycleTimeout;
		if (timeout) {
			clearTimeout(timeout);
			p.cycleTimeout = 0;
		}
		opts.nextSlide = opts.currSlide + val;
		if (opts.nextSlide < 0) {
			opts.nextSlide = els.length - 1;
		}
		else if (opts.nextSlide >= els.length) {
			opts.nextSlide = 0;
		}
		go(els, opts, 1, val>=0);
		return false;
	};
	
	$.fn.cycle.custom = function(curr, next, opts, cb) {
		var $l = $(curr), $n = $(next);
		$n.css(opts.cssBefore);
		var fn = function() {$n.animate(opts.animIn, opts.speedIn, opts.easeIn, cb)};
		$l.animate(opts.animOut, opts.speedOut, opts.easeOut, function() {
			$l.css(opts.cssAfter);
			if (!opts.sync) fn();
		});
		if (opts.sync) fn();
	};
	
	$.fn.cycle.transitions = {
		fade: function($cont, $slides, opts) {
			$slides.not(':eq(0)').hide();
			opts.cssBefore = { opacity: 0, display: 'block' };
			opts.cssAfter  = { display: 'none' };
			opts.animOut = { opacity: 0 };
			opts.animIn = { opacity: 1 };
		},
       fadeout: function($cont, $slides, opts) {
	       opts.before.push(function(curr,next,opts,fwd) {
		       $(curr).css('zIndex',opts.slideCount + (fwd === true ? 1 : 0));
		       $(next).css('zIndex',opts.slideCount + (fwd === true ? 0 : 1));
	       });
	       $slides.not(':eq(0)').hide();
	       opts.cssBefore = { opacity: 1, display: 'block', zIndex: 1 };
	       opts.cssAfter  = { display: 'none', zIndex: 0 };
	       opts.animOut = { opacity: 0 };
       }
	};
	
	$.fn.cycle.ver = function() { return ver; };
	
	// @see: http://malsup.com/jquery/cycle/lite/
	$.fn.cycle.defaults = {
		animIn:        {},
	      animOut:       {},
	      fx:           'fade',
	      after:         null, 
	      before:        null, 
	      cssBefore:     {},
	      cssAfter:      {},
	      delay:         0,    
	      fit:           0,    
	      height:       'auto',
	      metaAttr:     'cycle',
	      next:          null, 
	      pause:         0,    
	      prev:          null, 
	      speed:         1000, 
	      slideExpr:     null,
	      sync:          1,    
	      timeout:       4000 
	};
	
})(jQuery);