/*
 * 	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: 			'prevId',
			prevText: 		'Previous',
			nextId: 			'nextBtn',	
			nextText: 		'Next',
			orientation:	'', //  'vertical' is optional;
			speed: 				800			
		}; 
		
		var options = $.extend(defaults, options);  
		return this.each(function() 
		{  
			var obj = $(this);
			var ul = obj.find('ul');
			var s = ul.find('li').length;
			var w = $j(ul.find('li:first')).width() - 100;
			w = $.browser.msie ? w + 100 : w;
			var h = obj.height(); 
			var ts = s-1;
			var t = 0;
			var vertical = (options.orientation == 'vertical');
			ul.css('width',s*w);			
			var p = options._prev;
			var n = options._next; 
			var px = '#' + options.prevId;
			var nx = '#' + options.nextId
			obj.before('<div class="previous" id="' + options.prevId + '"><a href="#">' + options.prevText + '</a></div>' + '<div class="next" id="' + options.nextId + '"><a href="#">' + options.nextText + '</a></div>');
	  	
			$(px).data('boundTo', obj).hide();
	  	$(nx).data('boundTo', obj).hide();
	  	$(nx).click(function(){
	  		animate("next", $(this));
	  		if (t >= ts) 
	  			$(this).fadeOut();
	  		$(px).fadeIn();
				return false;
	  	});
	  	$(px).click(function(){
	  		animate("prev", $(this));
	  		if (t <= 0) 
	  			$(this).fadeOut();
	  		$(nx).fadeIn();
				return false;
	  	});
			  	
			function animate(dir, ref)
			{
				var obj = ref.data('boundTo');
				if(dir == "next"){
					t = (t>=ts) ? ts : t+1;	
				} else {
					t = (t<=0) ? 0 : t-1;
				};			
				if(!vertical) 
				{
					var ml = (t*w*-1);
					obj.find('ul').animate(
						{ left: ml }, 
						options.speed
					);
				} 
					else 
				{
					var mt = (t*h*-1);
					obj.find('ul').animate(
						{ top: mt }, 
						options.speed
					);					
				}
			};
			if (s > 1) 
			{
	  		$(nx).fadeIn();
	  	}	
		});
	  
	};

})(jQuery);