/*
 * 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: 'hide',
            fadeinSpeed: 'fast',
            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();
            }); */
            
            //activation on click
            $(this).click(function(e)
            {    
                if(!running) {
                    mousepos.x = e.pageX;
                    mousepos.y = e.pageY;
                    // adding class to container for manipulating styles
                    $(a).parent(0).addClass('zoom-activated');
                    activate();
                }
            });
            //deactivation on mouseout
            $(this).hover(function(e){},function()
            {
                $(a).parent(0).removeClass('zoom-activated');
                deactivate();
            });

            //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()
            {
                //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 = $( this ).width();
                smallimagedata.h = $( this ).height();


                //non viene fatta assegnazione alla variabile globale
                smallimagedata.h = $( this ).height();
                smallimagedata.pos = $( this ).offset();
                smallimagedata.pos.l = $( this ).offset().left;
                smallimagedata.pos.t = $( this ).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)
                {
                    largeimage.loadimage();
                }



            };



            return this;
        };



        //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 = this.url; // fires off async
            }

            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()
        {

            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;

                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()
        {

            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;
    }