/*
 * 	Easy Slider - jQuery plugin
 *	written by Alen Grakalic	
*/

(function($) {

	$.fn.easySlider = function(options){
	  
		// default configuration properties
		var defaults = {
			prevId: 		'prevBtn',
			prevText: 		'Previous',
			nextId: 		'nextBtn',	
			nextText: 		'Next',
			orientation:	'', //  'vertical' is optional;
			speed: 			800			
		}; 
		
		var options = $.extend(defaults, options);  
		
		return this.each(function() {
			obj = $(this); 				
			var s = window.sliderPages;
			var w = obj.width(); 
			var h = obj.height(); 
			var ts = s-1;
			var t = 0;
			var c = 0;
			var vertical = (options.orientation == 'vertical');
			$("ul", obj).css('width',s*w);	
			if(!vertical) $("li", obj).css('float',window.side);


			$("a","#"+options.nextId).click(function(){

			  var last = $("#slider").find("li").last().attr("id");
			  c = (c>=ts) ? ts : c+1;
			  var set = parseInt(last) + 1;
			  
			  if($("#" + set).length > 0){
			    var exists = true;
			  }else{
			    var exists = false;
			  }
			  
			  
			  if(c >= (last - 1) && exists == false && window.disableAjax === false){
			  
			  animate("next");
			  var cat_id = $("#slider").find("ul").attr("id");
			  $.ajax({
				type: "get",
				url: window.root_url + "/ar/item/nextset/" + cat_id + "/" + set,
				data: "",
				complete: function(request, status){
				   
				   var xmlDoc = new Object();
				   xmlDoc.responseText = processXmlResponse(request, status);
				   
				   $("#slider").find("ul").append("<li id='" + set + "' style='float:" + window.side +"'>" + $(xmlDoc.responseText).find("item").text() + "</li>");
				 }
			  });

			  }else{
			   animate("next");
			  }
			   
			});
			
			
			$("a","#"+options.prevId).click(function(){
			   
			  if(c > 0){
			     c = c-1;
			  }
				animate("prev");
			});
			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);
					if(window.side == "Left"){
					  $("ul",obj).animate(
						  { marginLeft: p }, 
						  options.speed
					  );
					}else{
					  $("ul",obj).animate(
						  { marginRight: p }, 
						  options.speed
					  );
					}
				} else {
					p = (t*h*-1);
					$("ul",obj).animate(
						{ marginTop: p }, 
						options.speed
					);					
				}
			};
			if(s>1) $("a","#"+options.nextId).fadeIn();	
		});
	  
	};

})(jQuery);