/*
 *
 * Copyright (c) 2006-2008 Sam Collett (http://www.texotela.co.uk)
 * Licensed under the MIT License:
 * http://www.opensource.org/licenses/mit-license.php
 *
 * Version 2.0.2
 * Demo: http://www.texotela.co.uk/code/jquery/newsticker/
 *
 * $LastChangedDate$
 * $Rev$
 *
 */

(function ($) {
/*
 * A basic news ticker.
 *
 * @name     newsticker (or newsTicker)
 * @param    delay      Delay (in milliseconds) between iterations. Default 4 seconds (4000ms)
 * @author   Sam Collett (http://www.texotela.co.uk)
 * @example  $("#news").newsticker(); // or $("#news").newsTicker(5000);
 *
 */
	$.fn.newsTicker = $.fn.newsticker = function (delay) {
		delay = delay || 4000;
		initTicker = function (el) {
			$.newsticker.clear(el);
			el.items = $("li", el);
			// hide all items (except first one)
			el.items.not(":eq(0)").hide().end();
			// current item
			el.currentitem = 0;
			startTicker(el);
		};
		startTicker = function (el) {
			el.tickfn = setInterval(function () {
				doTick(el)
			},
			delay)
		};
		doTick = function (el) {
			// don't run if paused
			if (el.pause) return;
			// pause until animation has finished
			$.newsticker.pause(el);
			// hide current item
			$(el.items[el.currentitem]).fadeOut("slow", function () {
				$(this).hide();
				// move to next item and show
				el.currentitem = ++el.currentitem % (el.items.size());
				$(el.items[el.currentitem]).fadeIn("slow", function () {
					$.newsticker.resume(el);
				});
			});
		};
		moveTick = function (el, forward) {
			// hide current item
			$(el.items[el.currentitem]).fadeOut("fast", function () {
				$(this).hide();
				if(forward) { // move to next item and show
					el.currentitem = ++el.currentitem % (el.items.size());
				} else { // move to previous item and show
					if(el.currentitem == 0) {
						el.currentitem = el.items.size() - 1;
					} else {
						--el.currentitem;
					}
				}
				$(el.items[el.currentitem]).fadeIn("fast");
			});
		};
		this.each(
			function () {
				if (this.nodeName.toLowerCase() != "ul") return;
				initTicker(this);
			}).addClass("newsticker").hover(
				function () {
					// pause if hovered over
					$.newsticker.pause(this);
				},
				function () {
					// resume when not hovered over
					$.newsticker.resume(this);
			});
		return this;
	};

	$.newsticker = $.newsTicker = {
		pause: function (el) {
			(el.jquery ? el[0] : el).pause = true;
		},
		resume: function (el) {
			(el.jquery ? el[0] : el).pause = false;
		},
		clear: function (el) {
			el = (el.jquery ? el[0] : el);
			clearInterval(el.tickfn);
			el.tickfn = null;
			el.items = null;
			el.currentItem = null;
		},
		next: function (el) {
			el = (el.jquery ? el[0] : el);
			clearInterval(el.tickfn);
			el.pause = true;
			moveTick(el, true);
		},
		previous: function (el) {
			el = (el.jquery ? el[0] : el);
			clearInterval(el.tickfn);
			el.pause = true;
			moveTick(el, false);
		}
	}

})(jQuery);