/*
Shutter Reloaded for NextGEN Gallery
http://www.laptoptips.ca/javascripts/shutter-reloaded/
Version: 1.3.1
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.overflow = '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 = '';
        }

        // close button creator

        closebtn = '<a href="#" onclick="shutterReloaded.hideShutter();"><img src="http://www.mrsherskin.com/image-assets/close_button.gif" alt="Click to close" /></a>';

        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>';

        // modified for close button and click-close removed

    D.innerHTML = '<div id="shWrap"><div id="imgContainer"><div id="clbtn">' + closebtn + '</div><img src="'+shutterLinks[ln].link+'" id="shTopImg" onload="shutterReloaded.showImg();" /></div>' + NavBar +'</div>';


        //Google Chrome 4.0.249.78 bug for onload attribute
        document.getElementById('shTopImg').src = shutterLinks[ln].link;

        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.overflow = '';
    },

    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 - 50;

        if ( t.FS ) {
            if ( TI.width > (t.wWidth - 10) )
            S.style.width = D.style.width = TI.width + 10 + 'px';
            document.documentElement.style.overflow = 'hidden';
        } 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';

        //init zoom
        jQuery(TI).addpowerzoom(
        { defaultpower:2, powerrange: [2, 5], magnifiersize: [300,300] } );
    },

    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;
    }
}