(function($) {
				$.fn.parallaxSlider = function(options) {
					var opts = $.extend({}, $.fn.parallaxSlider.defaults, options);
					w_w = $(this).width();
					return this.each(function() {
						var $pxs_container 	= $(this),
						o 				= $.meta ? $.extend({}, opts, $pxs_container.data()) : opts;
						
						//the main slider
						var $pxs_slider		= $('.pxs_slider',$pxs_container),
						//the elements in the slider
						$elems			= $pxs_slider.children(),
						//total number of elements
						total_elems		= $elems.length,
						//the navigation buttons
						$pxs_next		= $('.pxs_next',$pxs_container),
						$pxs_prev		= $('.pxs_prev',$pxs_container),
						//the bg images
						$pxs_bg1		= $('.pxs_bg1',$pxs_container),
						$pxs_bg2		= $('.pxs_bg2',$pxs_container),
						$pxs_bg3		= $('.pxs_bg3',$pxs_container),
						//current image
						current			= 0,
						//the thumbs container
						$pxs_thumbnails = $('.pxs_thumbnails',$pxs_container),
						//the thumbs
						$thumbs = $pxs_thumbnails.children(),
                        thumbnailsON = $thumbs.length>0,
						//the interval for the autoplay mode
						slideshow,
						//the loading image
						$pxs_loading	= $('.pxs_loading',$pxs_container),
						$pxs_slider_wrapper = $('.pxs_slider_wrapper',$pxs_container);
							
						//first preload all the images
						var loaded		= 0,
						$images		= $pxs_slider_wrapper.find('img');
						
						//calcolo la larghezza max delle immagini grandi e la somma di quelle piccole
						var max_image_w		= 0;
						var min_imagep_w	= 0;
						var sum_imagep_w	= 0;
						
						$images.each(function(){
							var $img	= $(this);
							$('<img/>').load(function(){
								++loaded;
								if (loaded == total_elems + $thumbs.length) {
									$pxs_loading.hide();
									$pxs_slider_wrapper.show();
										
									//one images width (assuming all images have the same sizes) LEVATO!!!!
									/*var one_image_w		= $pxs_slider.find('img:first').width();*/

									$images.each(function(){
										if ( $(this).width()>max_image_w) max_image_w=$(this).width() ;
									});
									
                                    if (thumbnailsON) {
									    var $images_p = $pxs_thumbnails.find('img');
									    $images_p.each(function(){
									        var imgW = $(this).width();
									        if (min_imagep_w == 0)
									            min_imagep_w = imgW;
										    else if ( imgW < min_imagep_w )
										        min_imagep_w = imgW;
										    sum_imagep_w+=imgW;
									    });
		                            }
									/*
									need to set width of the slider,
									of each one of its elements, and of the
									navigation buttons
									 */
									setWidths($pxs_slider,
									$elems,
									total_elems,
									$pxs_bg1,
									$pxs_bg2,
									$pxs_bg3,
									max_image_w,
									$pxs_next,
									$pxs_prev);
							
                                    if (thumbnailsON) {
									    /*
										    set the width of the thumbs
										    and spread them evenly
									     */
									    //var Thumb_W =(total_elems+1)*max_imagep_w;
									    var spaces	= min_imagep_w / 2; //Thumb_W/(total_elems+1);
									    var Thumb_W =(total_elems - 1) * spaces + sum_imagep_w;
									    //if (Thumb_W > w_w) Thumb_W = w_w - min_imagep_w;

									
									    $pxs_thumbnails.css({
									      //  'border':'1px solid #6D5D3D',
										    'width'			: Thumb_W + 'px',
										    'margin-left' 	: -Thumb_W/2 + 'px'
									    });
									    var lastpos=-min_imagep_w; //dovrebbe essere 0....BOOOOOOOOOO

									    $thumbs.each(function(i){
										    var $this 	= $(this);
										    var left	= lastpos //spaces*(i+1) - $this.width()/2;
										    $this.css('left',left+'px');
										    lastpos+=$this.width()+spaces;	
										    if(o.thumbRotation){
											    var angle 	= Math.floor(Math.random()*41)-20;
											    $this.css({
												    '-moz-transform'	: 'rotate('+ angle +'deg)',
												    '-webkit-transform'	: 'rotate('+ angle +'deg)',
												    'transform'			: 'rotate('+ angle +'deg)'
											    });
										    }
										    //hovering the thumbs animates them up and down
										    $this.bind('mouseenter',function(){
											    $(this).stop().animate({top:'-10px'},100);
										    }).bind('mouseleave',function(){
											    $(this).stop().animate({top:'0px'},100);
										    });
									    });
										
									    //make the first thumb be selected
									    highlight($thumbs.eq(0));
									}	
									//slide when clicking the navigation buttons
									$pxs_next.bind('click',function(){
										++current;
										if(current >= total_elems)
											if(o.circular)
												current = 0;
										else{
											--current;
											return false;
										}
							            highlight($thumbs.eq(current));
							            if (o.auto!=0) {
							                clearInterval(slideshow);
							                slideshow = setInterval(function () {
							                    $pxs_next.trigger('click');
							                }, o.auto);
							            }
							            slide(current,
										$pxs_slider,
										$pxs_bg3,
										$pxs_bg2,
										$pxs_bg1,
										o.speed,
										o.easing,
										o.easingBg);
									});
									$pxs_prev.bind('click',function(){
										--current;
										if(current < 0)
											if(o.circular)
												current = total_elems - 1;
										else{
											++current;
											return false;
										}
							            highlight($thumbs.eq(current));
							            if (o.auto != 0) {
							                clearInterval(slideshow);
							                slideshow = setInterval(function () {
							                    $pxs_next.trigger('click');
							                }, o.auto);
							            }
							            slide(current,
										$pxs_slider,
										$pxs_bg3,
										$pxs_bg2,
										$pxs_bg1,
										o.speed,
										o.easing,
										o.easingBg);
									});
							
									/*
									clicking a thumb will slide to the respective image
									 */
									$thumbs.bind('click',function(){
										var $thumb	= $(this);
										highlight($thumb);
										//if autoplay interrupt when user clicks
										if (o.auto != 0) {
											clearInterval(slideshow);
										    slideshow = setInterval(function () {
										        $pxs_next.trigger('click');
										    }, o.auto);
										}
										current = $thumb.index();
										slide(current,
										$pxs_slider,
										$pxs_bg3,
										$pxs_bg2,
										$pxs_bg1,
										o.speed,
										o.easing,
										o.easingBg);
									});
							
								
							
									/*
									activate the autoplay mode if
									that option was specified
									 */
									if(o.auto != 0){
										o.circular	= true;
										slideshow	= setInterval(function(){
											$pxs_next.trigger('click');
										},o.auto);
									}
							
									/*
									when resizing the window,
									we need to recalculate the widths of the
									slider elements, based on the new windows width.
									we need to slide again to the current one,
									since the left of the slider is no longer correct
									 */
									$(window).resize(function(){
										//w_w	= $(window).width();
										w_w = $pxs_container.width();
										setWidths($pxs_slider,$elems,total_elems,$pxs_bg1,$pxs_bg2,$pxs_bg3,max_image_w,$pxs_next,$pxs_prev);
										slide(current,
										$pxs_slider,
										$pxs_bg3,
										$pxs_bg2,
										$pxs_bg1,
										1,
										o.easing,
										o.easingBg);
									});

								}
							}).error(function(){
							    alert('immagine non trovata: ' + $img.attr('src'))
							}).attr('src',$img.attr('src'));
						});
							
							
							
					});
				};
				
				//the current windows width
				//var w_w				= $(window).width();
				var w_w = 0;
				
				var slide			= function(current,
				$pxs_slider,
				$pxs_bg3,
				$pxs_bg2,
				$pxs_bg1,
				speed,
				easing,
				easingBg){
					var slide_to	= parseInt(-w_w * current);
					$pxs_slider.stop().animate({
						left	: slide_to + 'px'
					},speed, easing);
					$pxs_bg3.stop().animate({
						left	: slide_to/2 + 'px'
					},speed, easingBg);
					$pxs_bg2.stop().animate({
						left	: slide_to/4 + 'px'
					},speed, easingBg);
					$pxs_bg1.stop().animate({
						left	: slide_to/8 + 'px'
					},speed, easingBg);
				}
				
				var highlight		= function($elem){
					$elem.siblings().removeClass('selected');
					$elem.addClass('selected');
				}
				
				var setWidths		= function($pxs_slider,
				$elems,
				total_elems,
				$pxs_bg1,
				$pxs_bg2,
				$pxs_bg3,
				max_image_w,
				$pxs_next,
				$pxs_prev){
					/*
					the width of the slider is the windows width
					times the total number of elements in the slider
					 */
					var pxs_slider_w	= w_w * total_elems;
					$pxs_slider.width(pxs_slider_w + 'px');
					//each element will have a width = windows width
					$elems.width(w_w + 'px');
					/*
					we also set the width of each bg image div.
					The value is the same calculated for the pxs_slider
					 */
					$pxs_bg1.width(pxs_slider_w + 'px');
					$pxs_bg2.width(pxs_slider_w + 'px');
					$pxs_bg3.width(pxs_slider_w + 'px');
					
					/*
					both the right and left of the
					navigation next and previous buttons will be:
					windowWidth/2 - imgWidth/2 + some margin (not to touch the image borders)
					aumentato margine per non andare sopra l'immagine
					 */
					var position_nav	= (w_w - max_image_w)/2 -30;
					$pxs_next.css('right', position_nav + 'px');
					$pxs_prev.css('left', position_nav + 'px');
				}
				
				$.fn.parallaxSlider.defaults = {
					auto			: 0,	//how many seconds to periodically slide the content.
											//If set to 0 then autoplay is turned off.
					speed			: 1000,//speed of each slide animation
					easing			: 'jswing',//easing effect for the slide animation
					easingBg		: 'jswing',//easing effect for the background animation
					circular		: true,//circular slider
					thumbRotation	: true//the thumbs will be randomly rotated
				};
				//easeInOutExpo,easeInBack
			})(jQuery);