/*
 * 	Easy Slider - jQuery plugin
 *	written by Alen Grakalic	
 *	http://cssglobe.com/post/3783/jquery-plugin-easy-image-or-content-slider
 *
 *	Copyright (c) 2009 Alen Grakalic (http://cssglobe.com)
 *	Dual licensed under the MIT (MIT-LICENSE.txt)
 *	and GPL (GPL-LICENSE.txt) licenses.
 *
 *	Built for jQuery library
 *	http://jquery.com
 *
 */
 
/*
 *	markup example for $("#images").easySlider();
 *	
 * 	<div id="images">
 *		<ul>
 *			<li><img src="images/01.jpg" alt="" /></li>
 *			<li><img src="images/02.jpg" alt="" /></li>
 *			<li><img src="images/03.jpg" alt="" /></li>
 *			<li><img src="images/04.jpg" alt="" /></li>
 *			<li><img src="images/05.jpg" alt="" /></li>
 *		</ul>
 *	</div>
 *
 */

(function($) {

	$.fn.easySlider = function(options) {

		// default configuration properties
		var defaults = {
			prevId: 'prevBtn',

			nextId: 'nextBtn',

			siteRoot: '/',

			orientation: '', //  'vertical' is optional;
			speed: 800
		};
	
		// if "/" is missing, add it
		if (options.siteRoot.lastIndexOf("/") == 0) {
			options.siteRoot = options.siteRoot.concat("/");
		}

		// if siteRoot is empty, set it to "/"
		if (options.siteRoot.length == 0)
			options.siteRoot = "/";

		var options = $.extend(defaults, options);

		return this.each(function() {
			obj = $(this);
			var s = $("li", obj).length;
			var w = obj.width();
			var h = obj.height();
			var ts = s - 1;
			var t = 0;


			var vertical = (options.orientation == 'vertical');
			$("ul", obj).css('width', s * w);
			if (!vertical) $("li", obj).css('float', 'left');
			$(obj).after('<br clear=\"all\"/><br clear=\"all\"/><span id="' + options.prevId
			+ '"><a href=\"javascript:void(0);\"><img src=\"' + options.siteRoot + 'Content/images/previous.jpg\" border=\"0\"></a></span> <span id="'
			 + options.nextId + '"><a href=\"javascript:void(0);\"><img src=\"' + options.siteRoot + 'Content/images/next.jpg\" border=\"0\" ></a></span><br clear="all">');
			$("a", "#" + options.prevId).hide();
			$("a", "#" + options.nextId).hide();
			$("a", "#" + options.nextId).click(function() {
				animate("next");
				if (t >= ts) $(this).fadeOut();
				$("a", "#" + options.prevId).fadeIn();
			});
			$("a", "#" + options.prevId).click(function() {
				animate("prev");
				if (t <= 0) $(this).fadeOut();
				$("a", "#" + options.nextId).fadeIn();
			});
			function animate(dir) {
				if (dir == "next") {
					t = (t >= ts) ? ts : t + 1;
				} else {
					t = (t <= 0) ? 0 : t - 1;
				};
				if (!vertical) {
					p = (t * w * -1);
					$("ul", obj).animate(
						{ marginLeft: p },
						options.speed
					);
				} else {
					p = (t * h * -1);
					$("ul", obj).animate(
						{ marginTop: p },
						options.speed
					);
				}
			};
			if (s > 1) $("a", "#" + options.nextId).fadeIn();
		});

	};

})(jQuery);