/*

 * jdNewsScroll 1.1 (2007-02-08)

 *

 * Copyright (c) 2006,2007 Jonathan Sharp (http://jdsharp.us)

 * Dual licensed under the MIT (MIT-LICENSE.txt)

 * and GPL (GPL-LICENSE.txt) licenses.

 *

 * http://jdsharp.us/

 *

 * Built upon jQuery 1.1.1 (http://jquery.com)

 * This also requires the jQuery dimensions plugin

 */

$(function() {

	$('#eventbar').jdNewsScroll();

});

(function($){

 	var ELMS = [];

 	$.fn.jdNewsScroll = function(settings) {

		settings = $.extend({}, arguments.callee.defaults, settings);

		$(this).each(function(){

			this.$settings	= settings;

			this.$pause 	= false;

			// Randomize when the scrolling will start, afterwards it will pause by delay

			this.$counter	= (Math.floor(Math.random() * 10) * 10);

			$(this).hover(function(){ $(this).jdNewsScrollPause(true) }, function(){ $(this).jdNewsScrollPause(false) });

			$('> ul', this)

				.bind('mouseover', function(e) {

					if ($(e.target).is('li')) {

						$(e.target).addClass('hover');

					}

				})

				.bind('mouseout', function(e) {

					if ($(e.target).is('li')) {

						$(e.target).removeClass('hover');

					}

				});

			ELMS.push(this);

		});

		return this;

	};

	$.fn.jdNewsScroll.defaults = {

		// Delay in seconds is (delay * 85)/1000

		delay: 	60,

		// Number of pixels to step

		step:	1

	};

	$.fn.jdNewsScrollPause = function(pause) {

		return this.each(function() {

			this.$pause = pause;

		});

	}

	// Activate our 'scrolling agent'

	setInterval(scroll, 85);

	// Go through our list of elements and step each one

	function scroll() {

		for (var i = 0; i < ELMS.length; i++) {

			var elm = ELMS[i];

			if (elm && !elm.$pause) {

				if (elm.$counter == 0) {

					var ul 	= $('> ul', elm)[0];

					if (!elm.$steps) {

						// Set the number of steps (the height of the li element)

						elm.$steps 	= $('> li:last-child', ul).outerHeight();

						// Reset our step which will count backwards towards $steps

						elm.$step	= 0;

					}

					if ((elm.$steps + elm.$step) <= 0) {

						elm.$counter 	= elm.$settings.delay;

						elm.$steps 		= false;

						$(ul).css('top', '0').find('> li:last-child').after($('> li:first-child', ul));

						$('> *', ul).not('li').remove();

					} else {

						elm.$step -= elm.$settings.step;

						if (-elm.$step > elm.$steps) {

							elm.$step = -elm.$steps;

						}

						ul.style.top = elm.$step + 'px';

					}

				} else {

					elm.$counter--;

				}

			}

		}

	};

})(jQuery);