/*
Shutter Reloaded for NextGEN Gallery
http://www.laptoptips.ca/javascripts/shutter-reloaded/
Version: 1.3.0
Copyright (C) 2007-2008  Andrew Ozz
Released under the GPL, http://www.gnu.org/copyleft/gpl.html

Acknowledgement: some ideas are from: Shutter by Andrew Sutherland - http://code.jalenack.com, WordPress - http://wordpress.org, Lightbox by Lokesh Dhakar - http://www.huddletogether.com, the icons are from Crystal Project Icons, Everaldo Coelho, http://www.everaldo.com

*/

shutterOnload = function(){shutterReloaded.init('sh');}

if (typeof shutterOnload == 'function') {
        if ('undefined' != typeof jQuery) jQuery(document).ready(function(){shutterOnload();});
        else if( typeof window.onload != 'function' ) window.onload = shutterOnload;
        else {oldonld = window.onload;window.onload = function(){if(oldonld){oldonld();};shutterOnload();}};
}

shutterReloaded = {

        I : function (a) {
                return document.getElementById(a);
        },

        settings : function() {
                var t = this, s = shutterSettings;

                t.imageCount = s.imageCount || 0;
                t.msgLoading = s.msgLoading || 'L O A D I N G';
                t.msgClose = s.msgClose || 'Click to Close';
        },

        init : function (a) {
                var t = this, L, T, ext, i, m, setid, inset, shfile, shMenuPre, k, img;
                shutterLinks = {}, shutterSets = {};
                if ( 'object' != typeof shutterSettings ) shutterSettings = {};

                for ( i = 0; i < document.links.length; i++ ) {
                        L = document.links[i];
                        ext = ( L.href.indexOf('?') == -1 ) ? L.href.slice(-4).toLowerCase() : L.href.substring( 0, L.href.indexOf('?') ).slice(-4).toLowerCase();
                        if ( ext != '.jpg' && ext != '.png' && ext != '.gif' && ext != 'jpeg' ) continue;
                        if ( a == 'sh' && L.className.toLowerCase().indexOf('shutter') == -1 ) continue;
                        if ( a == 'lb' && L.rel.toLowerCase().indexOf('lightbox') == -1 ) continue;

                        if ( L.className.toLowerCase().indexOf('shutterset') != -1 )
                        setid = L.className.replace(/\s/g, '_');
                        else if ( L.rel.toLowerCase().indexOf('lightbox[') != -1 )
                        setid = L.rel.replace(/\s/g, '_');
                        else setid = 0, inset = -1;

                        if( setid ) {
                                if ( ! shutterSets[setid] ) shutterSets[setid] = [];
                                        inset = shutterSets[setid].push(i);
                        }

                        shfile = L.href.slice(L.href.lastIndexOf('/')+1);
                        T = ( L.title && L.title != shfile ) ? L.title : '';

                        shutterLinks[i] = {link:L.href,num:inset,set:setid,title:T}
                        L.onclick = new Function('shutterReloaded.make("' + i + '");return false;');
                }

                t.settings();

        },

        make : function(ln,fs) {
                var t = this, prev, next, prevlink = '', nextlink = '', previmg, nextimg, D, S, W, fsarg = -1, imgNum, NavBar;

                if ( ! t.Top ) {
                        if ( typeof window.pageYOffset != 'undefined' ) t.Top = window.pageYOffset;
                        else t.Top = (document.documentElement.scrollTop > 0) ? document.documentElement.scrollTop : document.body.scrollTop;
                }

                if ( typeof t.pgHeight == 'undefined' )
                        t.pgHeight = Math.max(document.documentElement.scrollHeight,document.body.scrollHeight);

                if ( fs ) t.FS = ( fs > 0 ) ? 1 : 0;
                else t.FS = shutterSettings.FS || 0;

                if ( t.resizing ) t.resizing = null;
                window.onresize = new Function('shutterReloaded.resize("'+ln+'");');

                document.documentElement.style.overflowX = 'hidden';
                if ( ! t.VP ) {
                        t._viewPort();
                        t.VP = true;
                }

                if ( ! (S = t.I('shShutter')) ) {
                        S = document.createElement('div');
                        S.setAttribute('id','shShutter');
                        document.getElementsByTagName('body')[0].appendChild(S);
                        t.hideTags();
                }

                if ( ! (D = t.I('shDisplay')) ) {
                        D = document.createElement('div');
                        D.setAttribute('id','shDisplay');
                        D.style.top = t.Top + 'px';
                        document.getElementsByTagName('body')[0].appendChild(D);
                }

                S.style.height = t.pgHeight + 'px';

                var dv = t.textBtns ? ' | ' : '';
                if ( shutterLinks[ln].num > 1 ) {
                        prev = shutterSets[shutterLinks[ln].set][shutterLinks[ln].num - 2];
                        prevlink = '<a href="#" onclick="shutterReloaded.make('+prev+');return false">&lt;&lt;</a>'+dv;
                        previmg = new Image();
                        previmg.src = shutterLinks[prev].link;
                } else {
                        prevlink = '';
                }

                if ( shutterLinks[ln].num != -1 && shutterLinks[ln].num < (shutterSets[shutterLinks[ln].set].length) ) {
                        next = shutterSets[shutterLinks[ln].set][shutterLinks[ln].num];
                        nextlink = '<a href="#" onclick="shutterReloaded.make('+next+');return false">&gt;&gt;</a>'+dv;
                        nextimg = new Image();
                        nextimg.src = shutterLinks[next].link;
                } else {
                        nextlink = '';
                }

                imgNum = ( (shutterLinks[ln].num > 0) && t.imageCount ) ? '<div id="shCount">&nbsp;(&nbsp;' + shutterLinks[ln].num + '&nbsp;/&nbsp;' + shutterSets[shutterLinks[ln].set].length + '&nbsp;)&nbsp;</div>' : '';

                NavBar = '<div id="shTitle"><div id="shPrev">' + prevlink + '</div><div id="shNext">' + nextlink + '</div><div id="shName">' + shutterLinks[ln].title + '</div>' + imgNum + '</div>';

                D.innerHTML = '<div id="shWrap"><img src="'+shutterLinks[ln].link+'" id="shTopImg" title="' + t.msgClose + '" onload="shutterReloaded.showImg();" onclick="shutterReloaded.hideShutter();" />' + NavBar +'</div>';

                window.setTimeout(function(){shutterReloaded.loading();},2000);
        },

        loading : function() {
                var t = this, S, WB, W;
                if ( (W = t.I('shWrap')) && W.style.visibility == 'visible' ) return;
                if ( ! (S = t.I('shShutter')) ) return;
                if ( t.I('shWaitBar') ) return;
                WB = document.createElement('div');
                WB.setAttribute('id','shWaitBar');
                WB.style.top = t.Top + 'px';
                WB.innerHTML = t.msgLoading;
                S.appendChild(WB);
        },

        hideShutter : function() {
                var t = this, D, S;
                if ( D = t.I('shDisplay') ) D.parentNode.removeChild(D);
                if ( S = t.I('shShutter') ) S.parentNode.removeChild(S);
                t.hideTags(true);
                window.scrollTo(0,t.Top);
                window.onresize = t.FS = t.Top = t.VP = null;
                document.documentElement.style.overflowX = '';
        },

        resize : function(ln) {
                var t = this;

                if ( t.resizing ) return;
                if ( ! t.I('shShutter') ) return;
                var W = t.I('shWrap');
                if ( W ) W.style.visibility = 'hidden';

                window.setTimeout(function(){shutterReloaded.resizing = null},500);
                window.setTimeout(new Function('shutterReloaded.VP = null;shutterReloaded.make("'+ln+'");'),100);
                t.resizing = true;
        },

        _viewPort : function() {
                var t = this;
                var wiH = window.innerHeight ? window.innerHeight : 0;
                var dbH = document.body.clientHeight ? document.body.clientHeight : 0;
                var deH = document.documentElement ? document.documentElement.clientHeight : 0;

                if( wiH > 0 ) {
                        t.wHeight = ( (wiH - dbH) > 1 && (wiH - dbH) < 30 ) ? dbH : wiH;
                        t.wHeight = ( (t.wHeight - deH) > 1 && (t.wHeight - deH) < 30 ) ? deH : t.wHeight;
                } else t.wHeight = ( deH > 0 ) ? deH : dbH;

                var deW = document.documentElement ? document.documentElement.clientWidth : 0;
                var dbW = window.innerWidth ? window.innerWidth : document.body.clientWidth;
                t.wWidth = ( deW > 1 ) ? deW : dbW;
        },

        showImg : function() {
                var t = this, S = t.I('shShutter'), D = t.I('shDisplay'), TI = t.I('shTopImg'), T = t.I('shTitle'), NB = t.I('shNavBar'), W, WB, wHeight, wWidth, shHeight, maxHeight, itop, mtop, resized = 0;

                if ( ! S ) return;
                if ( (W = t.I('shWrap')) && W.style.visibility == 'visible' ) return;
                if ( WB = t.I('shWaitBar') ) WB.parentNode.removeChild(WB);

                S.style.width = D.style.width = '';
                T.style.width = (TI.width - 4) + 'px';

                shHeight = t.wHeight - 7;

                if ( t.FS ) {
                        if ( TI.width > (t.wWidth - 10) )
                        S.style.width = D.style.width = TI.width + 10 + 'px';
                        document.documentElement.style.overflowX = '';
                } else {
                        window.scrollTo(0,t.Top);
                        if ( TI.height > shHeight ) {
                                TI.width = TI.width * (shHeight / TI.height);
                                TI.height = shHeight;
                                resized = 1;
                        }
                        if ( TI.width > (t.wWidth - 16) ) {
                                TI.height = TI.height * ((t.wWidth - 16) / TI.width);
                                TI.width = t.wWidth - 16;
                                resized = 1;
                        }
                        T.style.width = (TI.width - 4) + 'px';
                }

                maxHeight = t.Top + TI.height + 10;
                if ( maxHeight > t.pgHeight ) S.style.height = maxHeight + 'px';
                window.scrollTo(0,t.Top);

                itop = (shHeight - TI.height) * 0.45;
                mtop = (itop > 3) ? Math.floor(itop) : 3;
                D.style.top = t.Top + mtop + 'px';
                W.style.visibility = 'visible';
        },

        hideTags : function(arg) {
                var sel = document.getElementsByTagName('select');
                var obj = document.getElementsByTagName('object');
                var emb = document.getElementsByTagName('embed');
                var ifr = document.getElementsByTagName('iframe');

                var vis = ( arg ) ? 'visible' : 'hidden';

                for (i = 0; i < sel.length; i++) sel[i].style.visibility = vis;
                for (i = 0; i < obj.length; i++) obj[i].style.visibility = vis;
                for (i = 0; i < emb.length; i++) emb[i].style.visibility = vis;
                for (i = 0; i < ifr.length; i++) ifr[i].style.visibility = vis;
        }
}