/*
 * 	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.picSlider = function(options){
	  
		// default configuration properties
		var defaults = {
			prevElem: 		{},
			prevclicked: 	false,	
			nextElem: 		{},	
			nextclicked: 	false,	
			liWidth: 		467,	
			startOnFirst:	false,
			orientation:	'', //  'vertical' is optional;
			speed: 			800			
		}; 
		
		var options = $.extend(defaults, options);  
		
		return this.each(function() {  
			var obj = $(this);
			var s = $("li", obj).length;
			var w = options.liWidth;
			var h = obj.height(); 
			var ts = s-1;
			var t = 0;
			var vertical = (options.orientation == 'vertical');
			$(obj).css('width',(w*s) + 'px');
			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>');		
			$(options.prevElem).parent().css('display','block');
			$(options.prevElem).css('visibility','hidden');
			try{
				$("li", obj).each(function(idx){if(idx==0){$(this).find('.picoverlay').hide();}});
			}catch(e){
			}
			$(options.nextElem).click(function(){		
				animate("next");
				if(!options.startOnFirst){
					if (t>=ts) $(this).css('visibility','hidden');
					$(options.prevElem).css('visibility','');
				}
				return false;
			});
			$(options.prevElem).click(function(){		
				animate("prev");
				if (t<=0) $(this).css('visibility','hidden');
				$(options.nextElem).css('visibility','');
				return false;
			});	
			function animate(dir){
				var pt = t;
				if(dir == "next"){
					if(!options.startOnFirst){
						t = (t>=ts) ? ts : (t+1);
					}else{
						t = (t+1)%(ts+1);
					}
					if(options.nextClicked){
						options.nextClicked(t,pt);
					}
				} else {
					if(!options.startOnFirst){
						t = (t<=0) ? 0 : (t-1);
					}else{
						t = (t+ts)%(ts+1);
					}
					if(options.prevClicked){
						options.prevClicked(t,pt);
					}
				};
				
				if(!vertical) {
					p = (t*w*-1);
					$(obj).animate(
						{ marginLeft: p+'px' }, 
						options.speed
					);				
				} else {
					p = (t*h*-1);
					$(obj).animate(
						{ marginLeft: p+'px' }, 
						options.speed
					);					
				}
				try{
					$("li", obj).find('.picoverlay').show();
					$("li", obj).each(function(idx){
						if(idx==t){
							if($(this).find('.picoverlay').length>0){
								$(this).find('.picoverlay').hide();
							}else{
								$(this).find('.picoverlay').show();
							}
						}
					});
				}catch(e){
				}
			};
			if(!options.startOnFirst){
				if(s>1)	$(options.nextElem).css('visibility','');
				else	$(options.nextElem).css('visibility','hidden');
			}
		});
	  
	};

})(jQuery);