/*
 * 	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,
			tempObj:                '',	
			alreadyInitialized:     'false'		
		}; 
		
		var options = $.extend(defaults, options);  
		
		return this.each(function() { 
		    if(options.tempObj != '')
		    {
		        obj = $(options.tempObj);
		    } else { 
			    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');
			if(options.alreadyInitialized == 'false')
			{
			    $(obj).after('<span id="'+ options.prevId +'"><a href=\"javascript:void(0);\"><img src="/Image/_FAD/ArrowLeft.png" /></a></span> <span id="'+ options.nextId +'"><a href=\"javascript:void(0);\"><img src="/Image/_FAD/ArrowRight.png" /></a></span>');		
			    $("a","#"+options.nextId).click(function(){		
				    if(parseInt($("ul",obj).css('margin-left')) >= (((s-2)*w*-1))) animate("next");
				    if(parseInt($("ul",obj).css('margin-left')) == (((s-2)*w*-1))) $(this).fadeTo("slow",0.33);
				    $("a","#"+options.prevId).fadeTo("slow",1);
			    });
			    $("a","#"+options.prevId).click(function(){		
				    if(parseInt($("ul",obj).css('margin-left')) <= -1*w)
				    {
				        animate("prev");
				    } else {
				        $("ul",obj).css('margin-left','0px');
				        $(this).fadeTo("slow",0.33);
				    }
				    if(parseInt($("ul",obj).css('margin-left')) == 0 - w) $(this).fadeTo("slow",0.33);
				    $("a","#"+options.nextId).fadeTo("slow",1);
			    });
			}
			
			if(s <= 1){
			    $("a","#"+options.prevId).fadeOut();
			    $("a","#"+options.nextId).fadeOut();
			} else {
			    $("a","#"+options.prevId).fadeTo("slow",0.33);
			}
			$("ul",obj).animate(
						{ marginLeft: 0 }, 
						options.speed
			);	
			
			function animate(dir){
				if(dir == "next"){
				    if(!vertical) {
					    p = parseInt($("ul",obj).css('margin-left')) - w;
					    $("ul",obj).animate(
						    { marginLeft: p }, 
						    options.speed
					    );				
				    } else {
					    p = parseInt($("ul",obj).css('margin-top')) - h;
					    $("ul",obj).animate(
						    { marginTop: p }, 
						    options.speed
					    );					
				    }	
				} else {
					if(!vertical) {
					    p = parseInt($("ul",obj).css('margin-left')) + w;
					    $("ul",obj).animate(
						    { marginLeft: p }, 
						    options.speed
					    );				
				    } else {
					    p = parseInt($("ul",obj).css('margin-top')) + h;
					    $("ul",obj).animate(
						    { marginTop: p }, 
						    options.speed
					    );					
				    }
				};								

			};
			if(s>1) $("a","#"+options.nextId).fadeIn();	
		});
	  
	};

})(jQuery);