(function($){
	$.fn.xmlSlider = function(options) {
		var
		  defaults = {xmlFile:'',
		  			width:675,
		  			  height:325,
		  			  speed:3000,
		  			  timeout:5000,
		  			  toggleBtn:false,
		  			  navBtn:false,
		  			  play:'Play',
		  			  pause:'Pause',
		  			  backward:'Backward',
		  			  forward:'Forward',
		  			  imageFail:''
		  			  },
		  settings = $.extend({}, defaults, options),
		  $this = this;		  
	  	//get XML
		$.ajax({
		type: "GET",
		url: settings.xmlFile,
		dataType: "xml",
		async : false,
		error: function(){
			if(typeof(console) !== 'undefined' && console != null)
				console.log("Error: XML file URL is not valid!");
		},
		success: function(xml){
			//append divs
			$this.html('');
			$this.append("<div id='xsBg'></div><div id='xsCaptions'><ul></ul></div>").find('ul');
			$this.append("<div id='xsImages'><ul></ul></div>").find('ul');	
	  		//retrive info
	  		var xsUrl,xsLink,xsTitle,xsDesc;
			$(xml).find('info').each(function(){
				xsUrl  =  $(this).find('img').text();
				xsLink  =  $(this).find('link').text();
				xsTitle  =  $(this).find('title').text();
				xsDesc =  $(this).find('desc').text();
				$("#xsImages ul").append("<li><a href='"+xsLink+"' target='_blank'><img src='"+xsUrl+"' alt='"+xsTitle+"' /></a></li>");
				$("#xsCaptions ul").append("<li><a href='"+xsLink+"' target='_blank'><h1>"+xsTitle+"</h1></a><p>"+xsDesc+"</p></li>");
			});
			//begin
			var xsCount = $(xml).find('info').size();
			if($(xml).find('info').size() > 0){
				//declare some vars & bind events 
				var	calcImg = settings.width*(xsCount-1)*-1,
					calcInfoHeight = $('#xsCaptions').height(),
					calcInfo = calcInfoHeight*(xsCount-1)*-1,
					RE = /^\d*$/,
					mouseOut = true,
					play = true;	
				//mouse events
				$this.mouseover(function(){mouseOut = false;});
				$this.mouseout(function(){mouseOut = true;});
				//decalre toggle
				if(settings.toggleBtn){
					$this.append('<div id="xsToggle">'+settings.pause+'</div>');
					$('#xsToggle').click(function(){
						if(play){
							play = false;
							$('#xsToggle').html(settings.play);
						}else{
							play = true;
							$('#xsToggle').html(settings.pause);
						}
					});
				}
				//decalre left and right mav
				if(settings.navBtn){
					$this.append('<div id="xsLeft">'+settings.backward+'</div><div id="xsRight">'+settings.forward+'</div>');
					$('#xsLeft').html(settings.backward).click(function(){
						play = false;
						$("#xsImages ul:not(:animated)").animate({'left': ($("#xsImages ul").position().left == 0 ) ? calcImg : "+="+settings.width }, settings.speed);
						$("#xsCaptions ul:not(:animated)").animate({'top': ($("#xsCaptions ul").position().top   == 0  ) ? calcInfo : "+="+calcInfoHeight }, settings.speed,function(){
							play = true;
						});
					});
					$('#xsRight').html(settings.forward).click(function(){
						play = false;
						$("#xsImages ul:not(:animated)").animate({'left': ($("#xsImages ul").position().left == calcImg ) ? 0 : "-="+settings.width }, settings.speed);
						$("#xsCaptions ul:not(:animated)").animate({'top': ($("#xsCaptions ul").position().top   == calcInfo  ) ? 0 : "-="+calcInfoHeight }, settings.speed,function(){
							play = true;
						});
					});
				}
				//dress them up
					$this.css({'float':'left','position':'relative','width':settings.width,'height':settings.height});
					$('#xsCaptions,#xsBg').css({'top':(settings.height-calcInfoHeight)});
					$('#xsCaptions li,#xsBg').css({'height':calcInfoHeight});
					$('#xsImages ul').css({'width': settings.width*xsCount});
					$('#xsImages li').css({'width':settings.width,'height':settings.height});
				//Determine the speed
				if(!RE.test(settings.timeout))
					settings.timeout = 3000;
				//movment
				var slideTheme = function(){					
					if(mouseOut && play){				
						$("#xsImages ul:not(:animated)").animate({'left': ($("#xsImages ul").position().left == calcImg ) ? 0 : "-="+settings.width }, settings.speed);
						$("#xsCaptions ul:not(:animated)").animate({'top': ($("#xsCaptions ul").position().top   == calcInfo  ) ? 0 : "-="+calcInfoHeight }, settings.speed ,
							function(){
								setTimeout(slideTheme, settings.timeout);
						});	
					}else
						setTimeout(slideTheme, settings.timeout);
				};
				//just at the 1st time
				imgCount = 0;
				$("#xsImages img").load(function(){
				  imgCount++;
				  if (imgCount == xsCount)
				    setTimeout(slideTheme, settings.timeout);
				}).error(function(){
					this.attr('src',settings.imageFail);
				});	
			}else
				if(typeof(console) !== 'undefined' && console != null)
					console.log("Error: XML file is not valid!");
		}
		});
	};
})(jQuery);