/*
 * JQZoom Evolution 1.0.1 - Javascript Image magnifier
 *
 * Copyright (c) Engineer Renzi Marco(www.mind-projects.it)
 *
 * $Date: 12-12-2008
 *
 *	ChangeLog:
 *  
 * $License : GPL,so any change to the code you should copy and paste this section,and would be nice to report this to me(renzi.mrc@gmail.com).
 */
(function ($)
{

	$.fn.jqzoom = function (options)
	{

		var settings = {
			zoomType: 'standard', //standard/reverse/innerzoom
			zoomWidth: 200, 	//zoomed width default width
			zoomHeight: 200, 	//zoomed div default width
			xOffset: 10, 	//zoomed div default offset
			yOffset: 0,
			position: "right", //zoomed div default position,offset position is to the right of the image
			lens: true, //zooming lens over the image,by default is 1;
			lensReset: false,
			imageOpacity: 0.2,
			title: true,
			alwaysOn: false,
			showEffect: 'show',
			hideEffect: 'show',
			fadeinSpeed: 'slow',
			fadeoutSpeed: 'slow',
			preloadImages: true,
			showPreload: true,
			preloadText: 'Loading zoom',
			preloadPosition: 'center'   //bycss
		};

		//extending options
		options = options || {};
		$.extend(settings, options);

		return this.each(function ()
		{
			var a = $(this);
			var aTitle = a.attr('title'); //variabile per memorizzare il titolo href
			$(a).removeAttr('title');
			$(a).css('outline-style', 'none');


			var img = $("img", this);
			var imageTitle = img.attr('title');
			img.removeAttr('title'); //variabile per memorizzare il titolo immagine


			var smallimage = new Smallimage(img);
			var smallimagedata = {};
			//imageborder
			var btop = 0;
			var bleft = 0;

			var loader = null;     //variabile per memorizzare oggetto loader
			loader = new Loader();

			var ZoomTitle = (trim(aTitle).length > 0) ? aTitle :
			(trim(imageTitle).length > 0) ? imageTitle : null;  //setting zoomtitle
			var ZoomTitleObj = new zoomTitle();

			var largeimage = new Largeimage(a[0].href);

			var lens = new Lens();
			var lensdata = {};
			//lensborder



			var largeimageloaded = false;
			var scale = {}; //rapporto tra immagine grande e piccola scale.x/scale.y
			var stage = null; // quadrato che mostra l'immagine ingrandita
			var running = false; // running = true quando si verifica l'evento che mostra lo zoom(adesso mouseover).
			var mousepos = {};
			var firstime = 0;
			var preloadshow = false;
			var isMouseDown = false;
			var dragstatus = false
			//loading smallimagedata
			smallimage.loadimage();

			//ritorna false al click dell href
			$(this).click(function () { return false; });

			//se settato alwaysOn attivo lo Zoom e lo mostro.

			//attivo al mouseover
			$(this).hover(function (e)
			{
				mousepos.x = e.pageX;
				mousepos.y = e.pageY;
				activate();
			}, function ()
			{
				deactivate();
			});

			//attivo al mousemove
			$(this).mousemove
			(
				function (e)
				{
					mousepos.x = e.pageX;
					mousepos.y = e.pageY;
					activate();
				}
			);

			//ALWAYS ON
			if (settings.alwaysOn)
			{
				setTimeout(function () { activate(); }, 150);
			}


			function activate()
			{

				if (!running)
				{

					//finding border
					smallimage.findborder();

					running = true;

					//rimuovo il titolo al mouseover
					imageTitle = img.attr('title');
					img.removeAttr('title');
					aTitle = a.attr('title');
					$(a).removeAttr('title');

					//se non cè creo l'oggetto largeimage
					if (!largeimage || $.browser.safari)
					{
						largeimage = new Largeimage(a[0].href);
					}

					//se l'immagine grande non è stata caricata la carico
					if (!largeimageloaded || $.browser.safari)
					{
						largeimage.loadimage();
					} else
					{
						//after preload
						if (settings.zoomType != 'innerzoom')
						{
							stage = new Stage();
							stage.activate();
						}
						lens = new Lens;
						lens.activate();
					}

					//hack per MAC
					/*	if($.browser.safari)
					{
					if(settings.zoomType != 'innerzoom') //se innerzoom non mostro la finestra dello zoom
					{
					stage = new Stage();
					stage.activate();
					}
					if($('div.jqZoomPup').length <= 0)
					{
					lens = new Lens();
					}
					//if(settings.zoomType == 'innerzoom'){lens = new Lens()};
					lens.activate();
					(settings.alwaysOn) ? lens.center() : lens.setposition(null);
					}
					*/
					a[0].blur();
					//alert($('div.jqZoomPup').length);
					return false;
				}




			}

			function deactivate()
			{
				if (settings.zoomType == 'reverse' && !settings.alwaysOn)
				{
					img.css({ 'opacity': 1 });
				}

				if (!settings.alwaysOn)
				{
					//resetting parameters
					running = false;
					largeimageloaded = false;
					$(lens.node).unbind('mousemove');
					lens.remove();
					if ($('div.jqZoomWindow').length > 0)
					{
						stage.remove();
					}
					if ($('div.jqZoomTitle').length > 0)
					{
						ZoomTitleObj.remove();
					}
					//resetting title
					img.attr('title', imageTitle);
					a.attr('title', aTitle);
					$().unbind();

					a.unbind('mousemove');
					//resetto il parametro che mi dice che è la prima volta che mostor lo zoom
					firstime = 0;
					//remove ieiframe
					if (jQuery('.zoom_ieframe').length > 0)
					{
						jQuery('.zoom_ieframe').remove();
					}
				} else
				{
					if (settings.lensReset)
					{
						switch (settings.zoomType)
						{
							case 'innerzoom':
								largeimage.setcenter();
								break;
							default:
								lens.center();
								break;
						}
					}
				}

				//non so se serve da provare
				if (settings.alwaysOn)
				{
					activate();
				}
			};





			//smallimage
			function Smallimage(image)
			{
				this.node = image[0];

				this.loadimage = function ()
				{
					this.node.src = image[0].src;
				};
				this.findborder = function ()
				{
					var bordertop = '';
					bordertop = $(img).css('border-top-width');
					btop = '';
					var borderleft = '';
					borderleft = $(img).css('border-left-width');
					bleft = '';
					/*if($.browser.msie)
					{
					var temp = bordertop.split(' ');

					bordertop = temp[1];
					var temp = borderleft.split(' ');
					borderleft = temp[1];
					}*/

					if (bordertop)
					{
						for (i = 0; i < 3; i++)
						{
							var x = [];
							x = bordertop.substr(i, 1);

							if (isNaN(x) == false)
							{
								btop = btop + '' + bordertop.substr(i, 1);
							} else
							{
								break;
							}
						}
					}

					if (borderleft)
					{
						for (i = 0; i < 3; i++)
						{
							if (!isNaN(borderleft.substr(i, 1)))
							{
								bleft = bleft + borderleft.substr(i, 1)
							} else
							{
								break;
							}
						}
					}
					btop = (btop.length > 0) ? eval(btop) : 0;
					bleft = (bleft.length > 0) ? eval(bleft) : 0;


				}
				this.node.onload = function ()
				{
					NodeLoad(this);
				};



				return this;
			};

			function NodeLoad(element)
			{
				//setto il cursor e la posizione dell'href


				a.css({ 'cursor': 'crosshair', 'display': 'block' });

				if (a.css('position') != 'absolute' && a.parent().css('position'))
				{
					a.css({ 'cursor': 'crosshair', 'position': 'relative', 'display': 'block' });
				}
				if (a.parent().css('position') != 'absolute')
				{
					//a.parent().css('position','relative');
					a.css('position', 'relative');
				}
				else
				{
					//a.css('position','relative');
				}
				if ($.browser.safari || $.browser.opera)
				{
					$(img).css({ position: 'absolute', top: '0px', left: '0px' });
				}
				/*if(a.css('position')!= 'absolute' && a.parent().css('position'))
				{
				a.css({'cursor':'crosshair','position':'relative','display':'block'});
				}
				if(a.parent().css('position') != 'absolute')
				{
				alert('in');
				a.parent().css('position','relative');
				//a.css('position','relative');
				}
				else{
				//a.css('position','relative');
				}*/



				/*
				if(a.parent().css('position') != 'relative' && a.css('position') != 'absolute')
				{
				a.css({'cursor':'crosshair','position':'relative','display':'block'});
				}*/

				//al docuemnt ready viene caricato l'src quindi viene azionato l'onload e carico tutti i dati
				smallimagedata.w = $(element).width();
				smallimagedata.h = $(element).height();


				//non viene fatta assegnazione alla variabile globale
				smallimagedata.h = $(element).height();
				smallimagedata.pos = $(element).offset();
				smallimagedata.pos.l = $(element).offset().left;
				smallimagedata.pos.t = $(element).offset().top;
				smallimagedata.pos.r = smallimagedata.w + smallimagedata.pos.l;
				smallimagedata.pos.b = smallimagedata.h + smallimagedata.pos.t;

				//per sicurezza setto l'altezza e la width dell'href
				a.height(smallimagedata.h);
				a.width(smallimagedata.w);


				//PRELOAD IMAGES
				if (settings.preloadImages)
				{
					//se non cè creo l'oggetto largeimage
					if (!largeimage || $.browser.safari)
					{
						largeimage = new Largeimage(a[0].href);
					}

					//se l'immagine grande non è stata caricata la carico
					if (!largeimageloaded || $.browser.safari)
					{
						largeimage.loadimage();
					} else
					{
						//after preload
						if (settings.zoomType != 'innerzoom')
						{
							stage = new Stage();
							stage.activate();
						}
						lens = new Lens;
						lens.activate();
					}

					largeimage.loadimage();
				}



			}



			//Lens
			function Lens()
			{


				//creating element and adding class
				this.node = document.createElement("div");
				$(this.node).addClass('jqZoomPup');

				this.node.onerror = function ()
				{
					$(lens.node).remove();
					lens = new Lens();
					lens.activate();
				};




				//funzione privata per il caricamento dello zoom
				this.loadlens = function ()
				{


					switch (settings.zoomType)
					{
						case 'reverse':
							this.image = new Image();
							this.image.src = smallimage.node.src; // fires off async
							this.node.appendChild(this.image);
							$(this.node).css({ 'opacity': 1 });
							break;
						case 'innerzoom':

							this.image = new Image();
							this.image.src = largeimage.node.src; // fires off async
							this.node.appendChild(this.image);
							$(this.node).css({ 'opacity': 1 });
							break
						default:
							break;
					}



					switch (settings.zoomType)
					{
						case 'innerzoom':
							lensdata.w = smallimagedata.w;
							lensdata.h = smallimagedata.h;
							break;
						default:
							lensdata.w = (settings.zoomWidth) / scale.x;
							lensdata.h = (settings.zoomHeight) / scale.y;
							break;
					}

					$(this.node).css({
						width: lensdata.w + 'px',
						height: lensdata.h + 'px',
						position: 'absolute',
						/*cursor: 'crosshair',*/
						display: 'none',
						//border: '1px solid blue'
						borderWidth: 1 + 'px'
					});
					a.append(this.node);
				}
				return this;
			};

			Lens.prototype.activate = function ()
			{
				//carico la lente
				this.loadlens();

				switch (settings.zoomType)
				{
					case 'reverse':
						img.css({ 'opacity': settings.imageOpacity });

						(settings.alwaysOn) ? lens.center() : lens.setposition(null);
						//lens.center();
						//bindo ad a il mousemove della lente
						a.bind('mousemove', function (e)
						{
							mousepos.x = e.pageX;
							mousepos.y = e.pageY;
							lens.setposition(e);
						});
						break;
					case 'innerzoom':

						//	lens = new Lens();
						//	lens.activate();

						$(this.node).css({ top: 0, left: 0 });
						if (settings.title)
						{
							ZoomTitleObj.loadtitle();
						}

						largeimage.setcenter();

						a.bind('mousemove', function (e)
						{
							mousepos.x = e.pageX;
							mousepos.y = e.pageY;
							largeimage.setinner(e);

							/*if(settings.zoomType == 'innerzoom' && running)
							{
							$(a).mousemove(function(){
							if($('div.jqZoomPup').length <= 0)
							{
							lens = new Lens();
							lens.activate();
							}
							});
							}*/

							/*if($('div.jqZoomPup').length <= 0)
							{
							lens = new Lens();
							lens.activate();
							}*/

						});
						break;
					default:
						/*$(document).mousemove(function(e){
						if(isMouseDown && dragstatus != false){
						lens.setposition( e );
						}
						});
						lens.center()


						dragstatus = 'on'
						$(document).mouseup(function(e){
						if(isMouseDown && dragstatus != false){
						isMouseDown = false;
						dragstatus = false;

						}
						});

						$(this.node).mousedown(function(e){
						$('div.jqZoomPup').css("cursor", "move");
						$(this.node).css("position", "absolute");

						// set z-index
						$(this.node).css("z-index", parseInt( new Date().getTime()/1000 ));
						if($.browser.safari)
						{
						$(a).css("cursor", "move");
						}
						isMouseDown    = true;
						dragstatus = 'on';
						lens.setposition( e );
						});
						*/


						(settings.alwaysOn) ? lens.center() : lens.setposition(null);

						//bindo ad a il mousemove della lente
						$(a).bind('mousemove', function (e)
						{

							mousepos.x = e.pageX;
							mousepos.y = e.pageY;
							lens.setposition(e);
						});

						break;
				}


				return this;
			};

			Lens.prototype.setposition = function (e)
			{


				if (e)
				{
					mousepos.x = e.pageX;
					mousepos.y = e.pageY;
				}

				if (firstime == 0)
				{
					var lensleft = (smallimagedata.w) / 2 - (lensdata.w) / 2;
					var lenstop = (smallimagedata.h) / 2 - (lensdata.h) / 2;
					//ADDED

					$('div.jqZoomPup').show()
					if (settings.lens)
					{
						this.node.style.visibility = 'visible';
					}
					else
					{
						this.node.style.visibility = 'hidden';
						$('div.jqZoomPup').hide();
					}
					//ADDED
					firstime = 1;

				} else
				{
					var lensleft = mousepos.x - smallimagedata.pos.l - (lensdata.w) / 2;
					var lenstop = mousepos.y - smallimagedata.pos.t - (lensdata.h) / 2;
				}


				//a sinistra
				if (overleft())
				{
					lensleft = 0 + bleft;
				} else
				//a destra
					if (overright())
					{
						if ($.browser.msie)
						{
							lensleft = smallimagedata.w - lensdata.w + bleft + 1;
						} else
						{
							lensleft = smallimagedata.w - lensdata.w + bleft - 1;
						}


					}

				//in alto
				if (overtop())
				{
					lenstop = 0 + btop;
				} else
				//sotto
					if (overbottom())
					{

						if ($.browser.msie)
						{
							lenstop = smallimagedata.h - lensdata.h + btop + 1;
						} else
						{
							lenstop = smallimagedata.h - lensdata.h - 1 + btop;
						}

					}
				lensleft = parseInt(lensleft);
				lenstop = parseInt(lenstop);

				//setto lo zoom ed un eventuale immagine al centro
				$('div.jqZoomPup', a).css({ top: lenstop, left: lensleft });

				if (settings.zoomType == 'reverse')
				{
					$('div.jqZoomPup img', a).css({ 'position': 'absolute', 'top': -(lenstop - btop + 1), 'left': -(lensleft - bleft + 1) });
				}

				this.node.style.left = lensleft + 'px';
				this.node.style.top = lenstop + 'px';

				//setto l'immagine grande
				largeimage.setposition();

				function overleft()
				{
					return mousepos.x - (lensdata.w + 2 * 1) / 2 - bleft < smallimagedata.pos.l;
				}

				function overright()
				{

					return mousepos.x + (lensdata.w + 2 * 1) / 2 > smallimagedata.pos.r + bleft;
				}

				function overtop()
				{
					return mousepos.y - (lensdata.h + 2 * 1) / 2 - btop < smallimagedata.pos.t;
				}

				function overbottom()
				{
					return mousepos.y + (lensdata.h + 2 * 1) / 2 > smallimagedata.pos.b + btop;
				}

				return this;
			};


			//mostra la lente al centro dell'immagine
			Lens.prototype.center = function ()
			{
				$('div.jqZoomPup', a).css('display', 'none');
				var lensleft = (smallimagedata.w) / 2 - (lensdata.w) / 2;
				var lenstop = (smallimagedata.h) / 2 - (lensdata.h) / 2;
				this.node.style.left = lensleft + 'px';
				this.node.style.top = lenstop + 'px';
				$('div.jqZoomPup', a).css({ top: lenstop, left: lensleft });

				if (settings.zoomType == 'reverse')
				{
					/*if($.browser.safari){
					alert('safari');
					alert(2*bleft);
					$('div.jqZoomPup img',a).css({'position': 'absolute','top': -( lenstop - btop +1) ,'left': -(lensleft - 2*bleft)  });
					}else
					{*/
					$('div.jqZoomPup img', a).css({ 'position': 'absolute', 'top': -(lenstop - btop + 1), 'left': -(lensleft - bleft + 1) });
					//}
				}

				largeimage.setposition();
				if ($.browser.msie)
				{
					$('div.jqZoomPup', a).show();
				} else
				{
					setTimeout(function () { $('div.jqZoomPup').fadeIn('fast'); }, 10);
				}
			};


			//ritorna l'offset
			Lens.prototype.getoffset = function ()
			{
				var o = {};
				o.left = parseInt(this.node.style.left);
				o.top = parseInt(this.node.style.top);
				return o;
			};

			//rimuove la lente
			Lens.prototype.remove = function ()
			{

				if (settings.zoomType == 'innerzoom')
				{
					$('div.jqZoomPup', a).fadeOut('fast', function () { /*$('div.jqZoomPup img').remove();*/$(this).remove(); });
				} else
				{
					//$('div.jqZoomPup img').remove();
					$('div.jqZoomPup', a).remove();
				}
			};

			Lens.prototype.findborder = function ()
			{
				var bordertop = '';
				bordertop = $('div.jqZoomPup').css('borderTop');
				//alert(bordertop);
				lensbtop = '';
				var borderleft = '';
				borderleft = $('div.jqZoomPup').css('borderLeft');
				lensbleft = '';
				if ($.browser.msie)
				{
					var temp = bordertop.split(' ');

					bordertop = temp[1];
					var temp = borderleft.split(' ');
					borderleft = temp[1];
				}

				if (bordertop)
				{
					for (i = 0; i < 3; i++)
					{
						var x = [];
						x = bordertop.substr(i, 1);

						if (isNaN(x) == false)
						{
							lensbtop = lensbtop + '' + bordertop.substr(i, 1);
						} else
						{
							break;
						}
					}
				}

				if (borderleft)
				{
					for (i = 0; i < 3; i++)
					{
						if (!isNaN(borderleft.substr(i, 1)))
						{
							lensbleft = lensbleft + borderleft.substr(i, 1)
						} else
						{
							break;
						}
					}
				}


				lensbtop = (lensbtop.length > 0) ? eval(lensbtop) : 0;
				lensbleft = (lensbleft.length > 0) ? eval(lensbleft) : 0;
			}

			//LARGEIMAGE
			function Largeimage(url)
			{
				this.url = url;
				this.node = new Image();

				/*if(settings.preloadImages)
				{
				preload.push(new Image());
				preload.slice(-1).src = url ;
				}*/

				this.loadimage = function ()
				{


					if (!this.node)
						this.node = new Image();

					this.node.style.position = 'absolute';
					this.node.style.display = 'none';
					this.node.style.left = '-5000px';
					this.node.style.top = '10px';
					loader = new Loader();

					if (settings.showPreload && !preloadshow)
					{
						loader.show();
						preloadshow = true;
					}

					document.body.appendChild(this.node);
					this.node.src = $("#ctl00_cphMain_ctl00_hid400Path").val() + $("#hidImageToZoom").val();
					$('.jqZoomWindow').remove();
					$('div.jqZoomPup').hide();

				}

				this.node.onload = function ()
				{
					this.style.display = 'block';
					var w = Math.round($(this).width());
					var h = Math.round($(this).height());

					this.style.display = 'none';

					//setting scale
					scale.x = (w / smallimagedata.w);
					scale.y = (h / smallimagedata.h);





					if ($('div.preload').length > 0)
					{
						$('div.preload').remove();
					}

					largeimageloaded = true;

					if (settings.zoomType != 'innerzoom' && running)
					{
						stage = new Stage();
						stage.activate();
					}

					if (running)
					{
						//alert('in');
						lens = new Lens();

						lens.activate();

					}
					//la attivo

					if ($('div.preload').length > 0)
					{
						$('div.preload').remove();
					}
				}
				return this;
			}


			Largeimage.prototype.setposition = function ()
			{
				this.node.style.left = Math.ceil(-scale.x * parseInt(lens.getoffset().left) + bleft) + 'px';
				this.node.style.top = Math.ceil(-scale.y * parseInt(lens.getoffset().top) + btop) + 'px';
			};

			//setto la posizione dell'immagine grande nel caso di innerzoom
			Largeimage.prototype.setinner = function (e)
			{
				this.node.style.left = Math.ceil(-scale.x * Math.abs(e.pageX - smallimagedata.pos.l)) + 'px';
				this.node.style.top = Math.ceil(-scale.y * Math.abs(e.pageY - smallimagedata.pos.t)) + 'px';
				$('div.jqZoomPup img', a).css({ 'position': 'absolute', 'top': this.node.style.top, 'left': this.node.style.left });
			};


			Largeimage.prototype.setcenter = function ()
			{
				this.node.style.left = Math.ceil(-scale.x * Math.abs((smallimagedata.w) / 2)) + 'px';
				this.node.style.top = Math.ceil(-scale.y * Math.abs((smallimagedata.h) / 2)) + 'px';


				$('div.jqZoomPup img', a).css({ 'position': 'absolute', 'top': this.node.style.top, 'left': this.node.style.left });
			};


			//STAGE
			function Stage()
			{

				$('div.jqZoomPup').show();
				var leftpos = smallimagedata.pos.l;
				var toppos = smallimagedata.pos.t;
				//creating element and class
				this.node = document.createElement("div");
				$(this.node).addClass('jqZoomWindow');

				$(this.node)
				.css({
					position: 'absolute',
					width: Math.round(settings.zoomWidth) + 'px',
					height: Math.round(settings.zoomHeight) + 'px',
					display: 'none',
					zIndex: 10000,
					overflow: 'hidden'
				});

				//fa il positionamento
				switch (settings.position)
				{
					case "right":

						leftpos = (smallimagedata.pos.r + Math.abs(settings.xOffset) + settings.zoomWidth < screen.width)
				? (smallimagedata.pos.l + smallimagedata.w + Math.abs(settings.xOffset))
				: (smallimagedata.pos.l - settings.zoomWidth - Math.abs(settings.xOffset));

						topwindow = smallimagedata.pos.t + settings.yOffset + settings.zoomHeight;
						toppos = (topwindow < screen.height && topwindow > 0)
				? smallimagedata.pos.t + settings.yOffset
				: smallimagedata.pos.t;

						break;
					case "left":

						leftpos = (smallimagedata.pos.l - Math.abs(settings.xOffset) - settings.zoomWidth > 0)
				? (smallimagedata.pos.l - Math.abs(settings.xOffset) - settings.zoomWidth)
				: (smallimagedata.pos.l + smallimagedata.w + Math.abs(settings.xOffset));

						topwindow = smallimagedata.pos.t + settings.yOffset + settings.zoomHeight;
						toppos = (topwindow < screen.height && topwindow > 0)
				? smallimagedata.pos.t + settings.yOffset
				: smallimagedata.pos.t - 4;

						break;
					case "top":

						toppos = (smallimagedata.pos.t - Math.abs(settings.yOffset) - settings.zoomHeight > 0)
				? (smallimagedata.pos.t - Math.abs(settings.yOffset) - settings.zoomHeight)
				: (smallimagedata.pos.t + smallimagedata.h + Math.abs(settings.yOffset));


						leftwindow = smallimagedata.pos.l + settings.xOffset + settings.zoomWidth;
						leftpos = (leftwindow < screen.width && leftwindow > 0)
				? smallimagedata.pos.l + settings.xOffset
				: smallimagedata.pos.l;

						break;
					case "bottom":


						toppos = (smallimagedata.pos.b + Math.abs(settings.yOffset) + settings.zoomHeight < $('body').height())
				? (smallimagedata.pos.b + Math.abs(settings.yOffset))
				: (smallimagedata.pos.t - settings.zoomHeight - Math.abs(settings.yOffset));


						leftwindow = smallimagedata.pos.l + settings.xOffset + settings.zoomWidth;
						leftpos = (leftwindow < screen.width && leftwindow > 0)
				? smallimagedata.pos.l + settings.xOffset
				: smallimagedata.pos.l;

						break;
					default:

						leftpos = (smallimagedata.pos.l + smallimagedata.w + settings.xOffset + settings.zoomWidth < screen.width)
				? (smallimagedata.pos.l + smallimagedata.w + Math.abs(settings.xOffset))
				: (smallimagedata.pos.l - settings.zoomWidth - Math.abs(settings.xOffset));

						toppos = (smallimagedata.pos.b + Math.abs(settings.yOffset) + settings.zoomHeight < screen.height)
				? (smallimagedata.pos.b + Math.abs(settings.yOffset))
				: (smallimagedata.pos.t - settings.zoomHeight - Math.abs(settings.yOffset));

						break;
				}

				this.node.style.left = leftpos + 'px';
				this.node.style.top = toppos + 'px';
				return this;
			}


			Stage.prototype.activate = function ()
			{

				if (!this.node.firstChild)
					this.node.appendChild(largeimage.node);


				if (settings.title)
				{
					ZoomTitleObj.loadtitle();
				}



				document.body.appendChild(this.node);


				switch (settings.showEffect)
				{
					case 'show':
						$(this.node).show();
						break;
					case 'fadein':
						$(this.node).fadeIn(settings.fadeinSpeed);
						break;
					default:
						$(this.node).show();
						break;
				}

				$(this.node).show();

				if ($.browser.msie && $.browser.version < 7)
				{
					this.ieframe = $('<iframe class="zoom_ieframe" frameborder="0" src="#"></iframe>')
	          .css({ position: "absolute", left: this.node.style.left, top: this.node.style.top, zIndex: 99, width: settings.zoomWidth, height: settings.zoomHeight })
	          .insertBefore(this.node);
				};


				largeimage.node.style.display = 'block';
			}

			Stage.prototype.remove = function ()
			{
				switch (settings.hideEffect)
				{
					case 'hide':
						$('.jqZoomWindow').remove();
						break;
					case 'fadeout':
						$('.jqZoomWindow').fadeOut(settings.fadeoutSpeed);
						break;
					default:
						$('.jqZoomWindow').remove();
						break;
				}
			}

			function zoomTitle()
			{

				this.node = jQuery('<div />')
				.addClass('jqZoomTitle')
				.html('' + ZoomTitle + '');

				this.loadtitle = function ()
				{
					if (settings.zoomType == 'innerzoom')
					{
						$(this.node)
					.css({ position: 'absolute',
						top: smallimagedata.pos.b + 3,
						left: (smallimagedata.pos.l + 1),
						width: smallimagedata.w
					})
					.appendTo('body');
					} else
					{
						$(this.node).appendTo(stage.node);
					}
				};
			}

			zoomTitle.prototype.remove = function ()
			{
				$('.jqZoomTitle').remove();
			}


			function Loader()
			{

				//-- Chrome fix --//
				if (smallimagedata.pos == null || smallimagedata.pos == undefined)
					NodeLoad($('[id$=imgMainPhoto]'));

				this.node = document.createElement("div");
				$(this.node).addClass('preload');
				$(this.node).html(settings.preloadText); //appendo il testo

				$(this.node)
				.appendTo("body")
				.css('visibility', 'hidden');



				this.show = function ()
				{
					switch (settings.preloadPosition)
					{
						case 'center':
							loadertop = smallimagedata.pos.t + (smallimagedata.h - $(this.node).height()) / 2;
							loaderleft = smallimagedata.pos.l + (smallimagedata.w - $(this.node).width()) / 2;
							break;
						default:
							var loaderoffset = this.getoffset();
							loadertop = !isNaN(loaderoffset.top) ? smallimagedata.pos.t + loaderoffset.top : smallimagedata.pos.t + 0;
							loaderleft = !isNaN(loaderoffset.left) ? smallimagedata.pos.l + loaderoffset.left : smallimagedata.pos.l + 0;
							break;
					}

					//setting position
					$(this.node).css({
						top: loadertop,
						left: loaderleft,
						position: 'absolute',
						visibility: 'visible'
					});
				}
				return this;
			}

			Loader.prototype.getoffset = function ()
			{
				var o = null;
				o = $('div.preload').offset();
				return o;
			}

		});
	}
})(jQuery);

	function trim(stringa)
	{
	    while (stringa.substring(0,1) == ' '){
	        stringa = stringa.substring(1, stringa.length);
	    }
	    while (stringa.substring(stringa.length-1, stringa.length) == ' '){
	        stringa = stringa.substring(0,stringa.length-1);
	    }
	    return stringa;
	}