// lightbox_plus.js
// == written by Takuya Otani <takuya.otani@gmail.com> ===
// == Copyright (C) 2006 SimpleBoxes/SerendipityNZ Ltd. ==
/*
	Copyright (C) 2006 Takuya Otani/SimpleBoxes - http://serennz.cool.ne.jp/sb/
	Copyright (C) 2006 SerendipityNZ - http://serennz.cool.ne.jp/snz/
	
	This script is licensed under the Creative Commons Attribution 2.5 License
	http://creativecommons.org/licenses/by/2.5/
	
	basically, do anything you want, just leave my name and link.
*/
/*
	Original script : Lightbox JS : Fullsize Image Overlays
	Copyright (C) 2005 Lokesh Dhakar - http://www.huddletogether.com
	For more information on this script, visit:
	http://huddletogether.com/projects/lightbox/
*/
// ver. 20061027 - fixed a bug ( not work at xhml documents on Netscape7 )
// ver. 20061026 - fixed bugs
// ver. 20061010 - implemented image set feature
// ver. 20060921 - fixed a bug / added overall view
// ver. 20060920 - added flag to prevent mouse wheel event
// ver. 20060919 - fixed a bug
// ver. 20060918 - implemented functionality of wheel zoom & drag'n drop
// ver. 20060131 - fixed a bug to work correctly on Internet Explorer for Windows
// ver. 20060128 - implemented functionality of echoic word
// ver. 20060120 - implemented functionality of caption and close button
function WindowSize()
{ // window size object
    this.w = 0;
    this.h = 0;
    return this.update();
}
WindowSize.prototype.update = function()
{
    var d = document;
    this.w =
    (window.innerWidth) ? window.innerWidth
            : (d.documentElement && d.documentElement.clientWidth) ? d.documentElement.clientWidth
            : d.body.clientWidth;
    this.h =
    (window.innerHeight) ? window.innerHeight
            : (d.documentElement && d.documentElement.clientHeight) ? d.documentElement.clientHeight
            : d.body.clientHeight;
    return this;
};
function PageSize()
{ // page size object
    this.win = new WindowSize();
    this.w = 0;
    this.h = 0;
    return this.update();
}
PageSize.prototype.update = function()
{
    var d = document;
    this.w =
    (window.innerWidth && window.scrollMaxX) ? window.innerWidth + window.scrollMaxX
            : (d.body.scrollWidth > d.body.offsetWidth) ? d.body.scrollWidth
            : d.body.offsetWidt;
    this.h =
    (window.innerHeight && window.scrollMaxY) ? window.innerHeight + window.scrollMaxY
            : (d.body.scrollHeight > d.body.offsetHeight) ? d.body.scrollHeight
            : d.body.offsetHeight;
    this.win.update();
    if (this.w < this.win.w) this.w = this.win.w;
    if (this.h < this.win.h) this.h = this.win.h;
    return this;
};
function PagePos()
{ // page position object
    this.x = 0;
    this.y = 0;
    return this.update();
}
PagePos.prototype.update = function()
{
    var d = document;
    this.x =
    (window.pageXOffset) ? window.pageXOffset
            : (d.documentElement && d.documentElement.scrollLeft) ? d.documentElement.scrollLeft
            : (d.body) ? d.body.scrollLeft
            : 0;
    this.y =
    (window.pageYOffset) ? window.pageYOffset
            : (d.documentElement && d.documentElement.scrollTop) ? d.documentElement.scrollTop
            : (d.body) ? d.body.scrollTop
            : 0;
    return this;
};
function LightBox(option)
{
    var self = this;
    self._imgs = [];
    self._sets = [];
    self._wrap = null;
    self._box = null;
    self._img = null;
    self._open = -1;
    self._page = new PageSize();
    self._pos = new PagePos();
    self._zoomimg = null;
    self._expandable = false;
    self._expanded = false;
    self._funcs = {'move':null,'up':null,'drag':null,'wheel':null,'dbl':null};
    self._level = 1;
    self._curpos = {x:0,y:0};
    self._imgpos = {x:0,y:0};
    self._minpos = {x:0,y:0};
    self._expand = option.expandimg;
    self._shrink = option.shrinkimg;
    self._resizable = option.resizable;
    self._timer = null;
    self._indicator = null;
    self._overall = null;
    self._openedset = null;
    self._prev = null;
    self._next = null;
    self._hiding = [];
    self._first = false;
    return self._init(option);
}
LightBox.prototype = {
    _init : function(option)
    {
        var self = this;
        var d = document;
        if (!d.getElementsByTagName) return;
        if (Browser.isMacIE) return self;
        var links = d.getElementsByTagName("a");
        for (var i = 0; i < links.length; i++)
        {
            var anchor = links[i];
            var num = self._imgs.length;
            var rel = String(anchor.getAttribute("rel")).toLowerCase();
            if (!anchor.getAttribute("href") || !rel.match('lightbox')) continue;
            // initialize item
            self._imgs[num] = {
                src:anchor.getAttribute("href"),
                w:-1,
                h:-1,
                title:'',
                cls:anchor.className,
                set:rel
            };
            if (anchor.getAttribute("title"))
                self._imgs[num].title = anchor.getAttribute("title");
            else if (anchor.firstChild
                    && anchor.firstChild.getAttribute
                    && anchor.firstChild.getAttribute("title"))
                self._imgs[num].title = anchor.firstChild.getAttribute("title");
            anchor.onclick = self._genOpener(num);
            // set closure to onclick event
            if (rel != 'lightbox')
            {
                if (!self._sets[rel]) self._sets[rel] = [];
                self._sets[rel].push(num);
            }
        }
        var body = d.getElementsByTagName("body")[0];
        self._wrap = self._createWrapOn(body, option.loadingimg);
        self._box = self._createBoxOn(body, option);
        self._img = self._box.firstChild;
        self._zoomimg = d.getElementById('actionImage');
        return self;
    },
    _genOpener : function(num)
    {
        var self = this;
        return function() {
            self._show(num);
            return false;
        }
    },
    _createWrapOn : function(obj, imagePath)
    {
        var self = this;
        if (!obj) return null;
        // create wrapper object, translucent background
        var wrap = document.createElement('div');
        obj.appendChild(wrap);
        wrap.id = 'overlay';
        wrap.style.display = 'none';
        wrap.style.position = 'fixed';
        wrap.style.top = '0px';
        wrap.style.left = '0px';
        wrap.style.zIndex = '50';
        wrap.style.width = '100%';
        wrap.style.height = '100%';
        if (Browser.isWinIE) wrap.style.position = 'absolute';
        Event.register(wrap, "click", function(evt) {
            self._close(evt);
        });
        // create loading image, animated image
        var imag = new Image;
        imag.onload = function() {
            var spin = document.createElement('img');
            wrap.appendChild(spin);
            spin.id = 'loadingImage';
            spin.src = imag.src;
            spin.style.position = 'relative';
            self._set_cursor(spin);
            Event.register(spin, 'click', function(evt) {
                self._close(evt);
            });
            imag.onload = function() {
            };
        };
        if (imagePath != '') imag.src = imagePath;
        return wrap;
    },
    _createBoxOn : function(obj, option)
    {
        var self = this;
        if (!obj) return null;
        // create lightbox object, frame rectangle
        var box = document.createElement('div');
        obj.appendChild(box);
        box.id = 'lightbox';
        box.style.display = 'none';
        box.style.position = 'absolute';
        box.style.zIndex = '60';
        // create image object to display a target image
        var img = document.createElement('img');
        box.appendChild(img);
        img.id = 'lightboxImage';
        self._set_cursor(img);
        Event.register(img, 'mouseover', function() {
            self._show_action();
        });
        Event.register(img, 'mouseout', function() {
            self._hide_action();
        });
        Event.register(img, 'click', function(evt) {
            self._close(evt);
        });
        // create hover navi - prev
        if (option.previmg)
        {
            var prevLink = document.createElement('img');
            box.appendChild(prevLink);
            prevLink.id = 'prevLink';
            prevLink.style.display = 'none';
            prevLink.style.position = 'absolute';
            prevLink.style.left = '9px';
            prevLink.style.zIndex = '70';
            prevLink.src = option.previmg;
            self._prev = prevLink;
            Event.register(prevLink, 'mouseover', function() {
                self._show_action();
            });
            Event.register(prevLink, 'click', function() {
                self._show_next(-1);
            });
        }
        // create hover navi - next
        if (option.nextimg)
        {
            var nextLink = document.createElement('img');
            box.appendChild(nextLink);
            nextLink.id = 'nextLink';
            nextLink.style.display = 'none';
            nextLink.style.position = 'absolute';
            nextLink.style.right = '9px';
            nextLink.style.zIndex = '70';
            nextLink.src = option.nextimg;
            self._next = nextLink;
            Event.register(nextLink, 'mouseover', function() {
                self._show_action();
            });
            Event.register(nextLink, 'click', function() {
                self._show_next(+1);
            });
        }
        // create zoom indicator
        var zoom = document.createElement('img');
        box.appendChild(zoom);
        zoom.id = 'actionImage';
        zoom.style.display = 'none';
        zoom.style.position = 'absolute';
        zoom.style.top = '15px';
        zoom.style.left = '15px';
        zoom.style.zIndex = '70';
        self._set_cursor(zoom);
        zoom.src = self._expand;
        Event.register(zoom, 'mouseover', function() {
            self._show_action();
        });
        Event.register(zoom, 'click', function() {
            self._zoom();
        });
        Event.register(window, 'resize', function() {
            self._set_size(true);
        });
        // create close button
        if (option.closeimg)
        {
            var btn = document.createElement('img');
            box.appendChild(btn);
            btn.id = 'closeButton';
            btn.style.display = 'inline';
            btn.style.position = 'absolute';
            btn.style.right = '9px';
            btn.style.top = '10px';
            btn.style.zIndex = '80';
            btn.src = option.closeimg;
            self._set_cursor(btn);
            Event.register(btn, 'click', function(evt) {
                self._close(evt);
            });
        }
        // caption text
        var caption = document.createElement('span');
        box.appendChild(caption);
        caption.id = 'lightboxCaption';
        caption.style.display = 'none';
        caption.style.position = 'absolute';
        caption.style.zIndex = '80';
        // create effect image
        /*		if (!option.effectpos)
              option.effectpos = {x:0,y:0};
          else
          {
              if (option.effectpos.x == '') option.effectpos.x = 0;
              if (option.effectpos.y == '') option.effectpos.y = 0;
          }
          var effect = new Image;
          effect.onload = function()
          {
              var effectImg = document.createElement('img');
              box.appendChild(effectImg);
              effectImg.id = 'effectImage';
              effectImg.src = effect.src;
              if (option.effectclass) effectImg.className = option.effectclass;
              effectImg.style.position = 'absolute';
              effectImg.style.display = 'none';
              effectImg.style.left = [option.effectpos.x,'px'].join('');;
              effectImg.style.top = [option.effectpos.y,'px'].join('');
              effectImg.style.zIndex = '90';
              self._set_cursor(effectImg);
              Event.register(effectImg,'click',function() { effectImg.style.display = 'none'; });
          };
          if (option.effectimg != '') effect.src = option.effectimg;*/
        if (self._resizable)
        {
            var overall = document.createElement('div');
            obj.appendChild(overall);
            overall.id = 'lightboxOverallView';
            overall.style.display = 'none';
            overall.style.position = 'absolute';
            overall.style.zIndex = '70';
            self._overall = overall;
            var indicator = document.createElement('div');
            obj.appendChild(indicator);
            indicator.id = 'lightboxIndicator';
            indicator.style.display = 'none';
            indicator.style.position = 'absolute';
            indicator.style.zIndex = '80';
            self._indicator = indicator;
        }
        return box;
    },
    _set_photo_size : function()
    {
        var self = this;
        if (self._open == -1) return;
        var targ = { w:self._page.win.w - 30, h:self._page.win.h - 30 };
        var zoom = { x:15, y:15 };
        var navi = { p:9, n:9, y:0 };
        if (!self._expanded)
        { // shrink image with the same aspect
            var orig = { w:self._imgs[self._open].w, h:self._imgs[self._open].h };
            var ratio = 1.0;
            if ((orig.w >= targ.w || orig.h >= targ.h) && orig.h && orig.w)
                ratio = ((targ.w / orig.w) < (targ.h / orig.h)) ? targ.w / orig.w : targ.h / orig.h;
            self._img.width = Math.floor(orig.w * ratio);
            self._img.height = Math.floor(orig.h * ratio);
            self._expandable = (ratio < 1.0) ? true : false;
            if (self._resizable) self._expandable = true;
            if (Browser.isWinIE) self._box.style.display = "block";
            self._imgpos.x = self._pos.x + (targ.w - self._img.width) / 2;
            self._imgpos.y = self._pos.y + (targ.h - self._img.height) / 2;
            navi.y = Math.floor(self._img.height / 2) - 10;
            self._show_caption(true);
            self._show_overall(false);
        }
        else
        { // zoomed or actual sized image
            var width = parseInt(self._imgs[self._open].w * self._level);
            var height = parseInt(self._imgs[self._open].h * self._level);
            self._minpos.x = self._pos.x + targ.w - width;
            self._minpos.y = self._pos.y + targ.h - height;
            if (width <= targ.w)
                self._imgpos.x = self._pos.x + (targ.w - width) / 2;
            else
            {
                if (self._imgpos.x > self._pos.x) self._imgpos.x = self._pos.x;
                else if (self._imgpos.x < self._minpos.x) self._imgpos.x = self._minpos.x;
                zoom.x = 15 + self._pos.x - self._imgpos.x;
                navi.p = self._pos.x - self._imgpos.x - 5;
                navi.n = width - self._page.win.w + self._imgpos.x + 25;
                if (Browser.isWinIE) navi.n -= 10;
            }
            if (height <= targ.h)
            {
                self._imgpos.y = self._pos.y + (targ.h - height) / 2;
                navi.y = Math.floor(self._img.height / 2) - 10;
            }
            else
            {
                if (self._imgpos.y > self._pos.y) self._imgpos.y = self._pos.y;
                else if (self._imgpos.y < self._minpos.y) self._imgpos.y = self._minpos.y;
                zoom.y = 15 + self._pos.y - self._imgpos.y;
                navi.y = Math.floor(targ.h / 2) - 10 + self._pos.y - self._imgpos.y;
            }
            self._img.width = width;
            self._img.height = height;
            self._show_caption(false);
            self._show_overall(true);
        }
        self._box.style.left = [self._imgpos.x,'px'].join('');
        self._box.style.top = [self._imgpos.y,'px'].join('');
        self._zoomimg.style.left = [zoom.x,'px'].join('');
        self._zoomimg.style.top = [zoom.y,'px'].join('');
        self._wrap.style.left = self._pos.x;
        if (self._prev && self._next)
        {
            self._prev.style.left = [navi.p,'px'].join('');
            self._next.style.right = [navi.n,'px'].join('');
            self._prev.style.top = self._next.style.top = [navi.y,'px'].join('');
        }
    },
    _show_overall : function(visible)
    {
        var self = this;
        if (self._overall == null) return;
        if (visible)
        {
            if (self._open == -1) return;
            var base = 100;
            var outer = { w:0, h:0, x:0, y:0 };
            var inner = { w:0, h:0, x:0, y:0 };
            var orig = { w:self._img.width , h:self._img.height };
            var targ = { w:self._page.win.w - 30, h:self._page.win.h - 30 };
            var max = orig.w;
            if (max < orig.h) max = orig.h;
            if (max < targ.w) max = targ.w;
            if (max < targ.h) max = targ.h;
            if (max < 1) return;
            outer.w = parseInt(orig.w / max * base);
            outer.h = parseInt(orig.h / max * base);
            inner.w = parseInt(targ.w / max * base);
            inner.h = parseInt(targ.h / max * base);
            outer.x = self._pos.x + targ.w - base - 20;
            outer.y = self._pos.y + targ.h - base - 20;
            inner.x = outer.x - parseInt((self._imgpos.x - self._pos.x) / max * base);
            inner.y = outer.y - parseInt((self._imgpos.y - self._pos.y) / max * base);
            self._overall.style.left = [outer.x,'px'].join('');
            self._overall.style.top = [outer.y,'px'].join('');
            self._overall.style.width = [outer.w,'px'].join('');
            self._overall.style.height = [outer.h,'px'].join('');
            self._indicator.style.left = [inner.x,'px'].join('');
            self._indicator.style.top = [inner.y,'px'].join('');
            self._indicator.style.width = [inner.w,'px'].join('');
            self._indicator.style.height = [inner.h,'px'].join('');
            self._overall.style.display = 'block'
            self._indicator.style.display = 'block';
        }
        else
        {
            self._overall.style.display = 'none';
            self._indicator.style.display = 'none';
        }
    },
    _set_size : function(onResize)
    {
        var self = this;
        if (self._open == -1) return;
        self._page.update();
        self._pos.update();
        var spin = self._wrap.firstChild;
        if (spin)
        {
            var top = (self._page.win.h - spin.height) / 2;
            if (self._wrap.style.position == 'absolute') top += self._pos.y;
            spin.style.top = [top,'px'].join('');
            spin.style.left = [(self._page.win.w - spin.width - 30) / 2,'px'].join('');
        }
        if (Browser.isWinIE)
        {
            self._wrap.style.width = [self._page.win.w,'px'].join('');
            self._wrap.style.height = [self._page.win.h,'px'].join('');
            self._wrap.style.top = [self._pos.y,'px'].join('');
        }
        if (onResize) self._set_photo_size();
    },
    _set_cursor : function(obj)
    {
        var self = this;
        if (Browser.isWinIE && !Browser.isNewIE) return;
        obj.style.cursor = 'pointer';
    },
    _current_setindex : function()
    {
        var self = this;
        if (!self._openedset) return -1;
        var list = self._sets[self._openedset];
        for (var i = 0,n = list.length; i < n; i++)
        {
            if (list[i] == self._open) return i;
        }
        return -1;
    },
    _get_setlength : function()
    {
        var self = this;
        if (!self._openedset) return -1;
        return self._sets[self._openedset].length;
    },
    _show_action : function()
    {
        var self = this;
        if (self._open == -1 || !self._expandable) return;
        if (!self._zoomimg) return;
        self._zoomimg.src = (self._expanded) ? self._shrink : self._expand;
        self._zoomimg.style.display = 'inline';
        var check = self._current_setindex();
        if (check > -1)
        {
            if (check > 0) self._prev.style.display = 'inline';
            if (check < self._get_setlength() - 1) self._next.style.display = 'inline';
        }
    },
    _hide_action : function()
    {
        var self = this;
        if (self._zoomimg) self._zoomimg.style.display = 'none';
        if (self._open > -1 && self._expanded) self._dragstop(null);
        if (self._prev) self._prev.style.display = 'none';
        if (self._next) self._next.style.display = 'none';
    },
    _zoom : function()
    {
        var self = this;
        var closeBtn = document.getElementById('closeButton');
        if (self._expanded)
        {
            self._reset_func();
            self._expanded = false;
            if (closeBtn) closeBtn.style.display = 'inline';
        }
        else if (self._open > -1)
        {
            self._level = 1;
            self._imgpos.x = self._pos.x;
            self._imgpos.y = self._pos.y;
            self._expanded = true;
            self._funcs.drag = function(evt) {
                self._dragstart(evt)
            };
            self._funcs.dbl = function(evt) {
                self._close(null)
            };
            if (self._resizable)
            {
                self._funcs.wheel = function(evt) {
                    self._onwheel(evt)
                };
                Event.register(self._box, 'mousewheel', self._funcs.wheel);
            }
            Event.register(self._img, 'mousedown', self._funcs.drag);
            Event.register(self._img, 'dblclick', self._funcs.dbl);
            if (closeBtn) closeBtn.style.display = 'none';
        }
        self._set_photo_size();
        self._show_action();
    },
    _reset_func : function()
    {
        var self = this;
        if (self._funcs.wheel != null) Event.deregister(self._box, 'mousewheel', self._funcs.wheel);
        if (self._funcs.move != null) Event.deregister(self._img, 'mousemove', self._funcs.move);
        if (self._funcs.up != null) Event.deregister(self._img, 'mouseup', self._funcs.up);
        if (self._funcs.drag != null) Event.deregister(self._img, 'mousedown', self._funcs.drag);
        if (self._funcs.dbl != null) Event.deregister(self._img, 'dblclick', self._funcs.dbl);
        self._funcs = {'move':null,'up':null,'drag':null,'wheel':null,'dbl':null};
    },
    _onwheel : function(evt)
    {
        var self = this;
        var delta = 0;
        evt = Event.getEvent(evt);
        if (evt.wheelDelta)  delta = event.wheelDelta / -120;
        else if (evt.detail) delta = evt.detail / 3;
        if (Browser.isOpera) delta = - delta;
        var step =
                (self._level < 1) ? 0.1
                        : (self._level < 2) ? 0.25
                        : (self._level < 4) ? 0.5
                        : 1;
        self._level = (delta > 0) ? self._level + step : self._level - step;
        if (self._level > 8) self._level = 8;
        else if (self._level < 0.5) self._level = 0.5;
        self._set_photo_size();
        return Event.stop(evt);
    },
    _dragstart : function(evt)
    {
        var self = this;
        evt = Event.getEvent(evt);
        self._curpos.x = evt.screenX;
        self._curpos.y = evt.screenY;
        self._funcs.move = function(evnt) {
            self._dragging(evnt);
        };
        self._funcs.up = function(evnt) {
            self._dragstop(evnt);
        };
        Event.register(self._img, 'mousemove', self._funcs.move);
        Event.register(self._img, 'mouseup', self._funcs.up);
        return Event.stop(evt);
    },
    _dragging : function(evt)
    {
        var self = this;
        evt = Event.getEvent(evt);
        self._imgpos.x += evt.screenX - self._curpos.x;
        self._imgpos.y += evt.screenY - self._curpos.y;
        self._curpos.x = evt.screenX;
        self._curpos.y = evt.screenY;
        self._set_photo_size();
        return Event.stop(evt);
    },
    _dragstop : function(evt)
    {
        var self = this;
        evt = Event.getEvent(evt);
        if (self._funcs.move != null) Event.deregister(self._img, 'mousemove', self._funcs.move);
        if (self._funcs.up != null) Event.deregister(self._img, 'mouseup', self._funcs.up);
        self._funcs.move = null;
        self._funcs.up = null;
        self._set_photo_size();
        return (evt) ? Event.stop(evt) : false;
    },
    _show_caption : function(enable)
    {
        var self = this;
        var caption = document.getElementById('lightboxCaption');
        if (!caption) return;
        if (caption.innerHTML.length == 0 || !enable)
        {
            caption.style.display = 'none';
        }
        else
        { // now display caption
            caption.style.top = [self._img.height + 10,'px'].join('');
            // 10 is top margin of lightbox
            caption.style.left = '0px';
            caption.style.width = [self._img.width + 20,'px'].join('');
            // 20 is total side margin of lightbox
            caption.style.display = 'block';
        }
    },
    _toggle_wrap : function(flag)
    {
        var self = this;
        self._wrap.style.display = flag ? "block" : "none";
        if (self._hiding.length == 0 && !self._first)
        { // some objects may overlap on overlay, so we hide them temporarily.
            var tags = ['select','embed','object'];
            for (var i = 0,n = tags.length; i < n; i++)
            {
                var elem = document.getElementsByTagName(tags[i]);
                for (var j = 0,m = elem.length; j < m; j++)
                { // check the original value at first. when alredy hidden, dont touch them
                    var check = elem[j].style.visibility;
                    if (!check)
                    {
                        if (elem[j].currentStyle)
                            check = elem[j].currentStyle['visibility'];
                        else if (document.defaultView)
                            check = document.defaultView.getComputedStyle(elem[j], '').getPropertyValue('visibility');
                    }
                    if (check == 'hidden') continue;
                    self._hiding.push(elem[j]);
                }
            }
            self._first = true;
        }
        for (var i = 0,n = self._hiding.length; i < n; i++)
            self._hiding[i].style.visibility = flag ? "hidden" : "visible";
    },
    _show : function(num)
    {
        var self = this;
        var imag = new Image;
        if (num < 0 || num >= self._imgs.length) return;
        var loading = document.getElementById('loadingImage');
        var caption = document.getElementById('lightboxCaption');
        //		var effect = document.getElementById('effectImage');
        self._open = num;
        // set opened image number
        self._set_size(false);
        // calc and set wrapper size
        self._toggle_wrap(true);
        if (loading) loading.style.display = 'inline';
        imag.onload = function() {
            if (self._imgs[self._open].w == -1)
            { // store original image width and height
                self._imgs[self._open].w = imag.width;
                self._imgs[self._open].h = imag.height;
            }
            /*			if (effect)
               {
                   effect.style.display = (!effect.className || self._imgs[self._open].cls == effect.className)
                       ? 'block' : 'none';
               }*/
            if (caption)
                try {
                    caption.innerHTML = self._imgs[self._open].title;
                } catch(e) {
                }
            self._set_photo_size();
            // calc and set lightbox size
            self._hide_action();
            self._box.style.display = "block";
            self._img.src = imag.src;
            self._img.setAttribute('title', self._imgs[self._open].title);
            self._timer = window.setInterval(function() {
                self._set_size(true)
            }, 100);
            if (loading) loading.style.display = 'none';
            if (self._imgs[self._open].set != 'lightbox')
            {
                var set = self._imgs[self._open].set;
                if (self._sets[set].length > 1) self._openedset = set;
                if (!self._prev || !self._next) self._openedset = null;
            }
        };
        self._expandable = false;
        self._expanded = false;
        imag.src = self._imgs[self._open].src;
    },
    _close_box : function()
    {
        var self = this;
        self._open = -1;
        self._openedset = null;
        self._hide_action();
        self._hide_action();
        self._reset_func();
        self._show_overall(false);
        self._box.style.display = "none";
        if (self._timer != null)
        {
            window.clearInterval(self._timer);
            self._timer = null;
        }
    },
    _show_next : function(direction)
    {
        var self = this;
        if (!self._openedset) return self._close(null);
        var index = self._current_setindex() + direction;
        var targ = self._sets[self._openedset][index];
        self._close_box();
        self._show(targ);
    },
    _close : function(evt)
    {
        var self = this;
        if (evt != null)
        {
            evt = Event.getEvent(evt);
            var targ = evt.target || evt.srcElement;
            if (targ && targ.getAttribute('id') == 'lightboxImage' && self._expanded) return;
        }
        self._close_box();
        self._toggle_wrap(false);
    }
};
Event.register(window, "load", function() {
    var lightbox = new LightBox({
        loadingimg:'lightbox/loading.gif',
        expandimg:'lightbox/expand.gif',
        shrinkimg:'lightbox/shrink.gif',
        previmg:'lightbox/prev.gif',
        nextimg:'lightbox/next.gif',
    /*		effectpos:{x:-40,y:-20},
         effectclass:'effectable',*/
        closeimg:'lightbox/close.gif',
        resizable:true
    });
});
