/*
* 	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: 		'Previous',
			nextId: 		'nextBtn',	
			nextText: 		'Next',
			orientation:	'', //  'vertical' is optional;
			speed: 			800
		}; 

		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;

// ** bj
			var t = fid-1 ;				//alert('t:'+ t  +  ' opt.nmbr'+ options.nmbr  +" fid"+ fid +" fidw.n"+fidwn);
			if (t < 0) t=0;
// ** bj-end

			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);\">&laquo;</a></span> <span id="'+ options.nextId +'"><a href=\"javascript:void(0);\">&raquo;</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
					);					
				}
				// alert(options.nextId);
			};
			if(s>1) $("a","#"+options.nextId).fadeIn();	
//** bj
			if(t>0){
				t--;
				orgspeed = options.speed;
				options.speed=1;
				animate("next")
				$("a","#"+options.prevId).fadeIn();	
				options.speed = orgspeed;
			}
//** bj-end

		});

	};

})(jQuery);