/* 
 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.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="" id="shTopImg" title="' + t.msgClose + '" onload="shutterReloaded.showImg();" onclick="shutterReloaded.hideShutter();" />' + 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.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; 
         } 
 }