/*

 * 	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',

			prevText: 		'',

			nextId: 		'nextBtn',	

			nextText: 		'',

			orientation:	'', //  'vertical' is optional;

			speed: 			800			

		}; 

		

		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('<span id="'+ options.prevId +'"><a href=\"javascript:void(0);\">'+ options.prevText +'</a></span> <span id="'+ options.nextId +'"><a href=\"javascript:void(0);\">'+ options.nextText +'</a></span>');		

			$("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);