/*
  jquery.carousel
  made by Robin Duckett in 2009 / updated by Pablo Carrau in 2011
  http://twitter.com/robinduckett
  You are free to use, modify or distribute this code as long as it retains this header.

  Updated to allow multiple class definitions

  Usage example:

  $('.carousel').carousel();
*/
(function($) {
    $.fn.carousel = function(options) {

        var defaults = {
            start: 0,
            duration: 10000,
            hide: 'fadeOut',
            show: 'fadeIn',
            speed: 'slow',
            seed: 5,
            timer: 0,
            animate: true,
            slideshow: true
        };

		function _rand(lbound, ubound) {
            return (Math.floor(Math.random() * (ubound - lbound)) + lbound);
        }

        function _generateId(seed) {
            var randoChar = 'abcdefghijklmnopqrstuvwxyz0123456789';
            var sSeed = '';
            for (i = 0; i < seed; i++) {
                sSeed += randoChar.charAt(_rand(0, randoChar.length - 1));
            }
            return sSeed;
        }

        function _init(blam) {
	        var element = blam;
	        var slides;
	        var slide = options.start;
	        var selector = _generateId(options.seed);
			if (options.start == -1) {
				slide = _rand(0, $(element).children('li').length);
			}

          $(element).children('li').each(function(index) {
			if (options.slideshow) {
				$(this)[index == slide ? options.show : 'hide'](index == slide ? options.speed : '').addClass(selector + index).addClass('slide')[index == slide ? 'addClass': 'removeClass']('active');
			} else {
				$(this).addClass(selector + index).addClass('slide')[index == slide ? 'addClass': 'removeClass']('active');
			}
            slides = index;
          });

          // total time = 2*D + 2*S;

          options.timer = setTimeout(function() {
              var callee = arguments.callee;
              if (options.animate && options.slideshow) {
                $(element).children('li.' + selector + slide)[options.hide](options.speed,
                function() {
					$(this).removeClass('active');
                  slide = slide == slides ? 0: slide + 1;
                  $(element).children('li.' + selector + slide).addClass('active');
                  $(element).children('li.' + selector + slide)[options.show](options.speed,
                  function() {
                      options.timer = setTimeout(callee, options.duration);
	                });
                });
              } else if (!options.slideshow && !options.animate) {
				setTimeout(function() {
					$(element).children('li.' + selector + slide).removeClass('active');
					slide = slide == slides ? 0: slide + 1;
                  $(element).children('li.' + selector + slide).addClass('active');
                  setTimeout(function() {
					options.timer = setTimeout(callee, options.duration);
                  }, options.speed);
				}, options.speed);
              } else if (options.slideshow && !options.animate) {
				setTimeout(function() {
					$(element).children('li.' + selector + slide).removeClass('active').hide();
					slide = slide == slides ? 0: slide + 1;
                  $(element).children('li.' + selector + slide).addClass('active').show();
                  setTimeout(function() {
					options.timer = setTimeout(callee, options.duration);
                  }, options.speed);
				}, options.speed);
              }
          },
          options.duration);
        }

        options = jQuery.extend(defaults, options);

        this.each(function() {
			$(this).load(_init(this));
		});
    };
})(jQuery);