/* $Id: lightbox.js,v 1.5.2.6.2.136 2010/09/24 08:39:40 snpower Exp $ */

/**
 * jQuery Lightbox
 * @author
 *   Stella Power, <http://drupal.org/user/66894>
 *
 * Based on Lightbox v2.03.3 by Lokesh Dhakar
 * <http://www.huddletogether.com/projects/lightbox2/>
 * Also partially based on the jQuery Lightbox by Warren Krewenki
 *   <http://warren.mesozen.com>
 *
 * Permission has been granted to Mark Ashmead & other Drupal Lightbox2 module
 * maintainers to distribute this file via Drupal.org
 * Under GPL license.
 *
 * Slideshow, iframe and video functionality added by Stella Power.
 */

var Lightbox = {
  auto_modal : false,
  overlayOpacity : 0.8, // Controls transparency of shadow overlay.
  overlayColor : '000', // Controls colour of shadow overlay.
  disableCloseClick : true,
  // Controls the order of the lightbox resizing animation sequence.
  resizeSequence: 0, // 0: simultaneous, 1: width then height, 2: height then width.
  resizeSpeed: 'normal', // Controls the speed of the lightbox resizing animation.
  fadeInSpeed: 'normal', // Controls the speed of the image appearance.
  slideDownSpeed: 'slow', // Controls the speed of the image details appearance.
  minWidth: 240,
  borderSize : 10,
  boxColor : 'fff',
  fontColor : '000',
  topPosition : '',
  infoHeight: 20,
  alternative_layout : false,
  imageArray : [],
  imageNum : null,
  total : 0,
  activeImage : null,
  inprogress : false,
  disableResize : false,
  disableZoom : false,
  isZoomedIn : false,
  rtl : false,
  loopItems : false,
  keysClose : ['c', 'x', 27],
  keysPrevious : ['p', 37],
  keysNext : ['n', 39],
  keysZoom : ['z'],
  keysPlayPause : [32],

  // Slideshow options.
  slideInterval : 5000, // In milliseconds.
  showPlayPause : true,
  autoStart : true,
  autoExit : true,
  pauseOnNextClick : false, // True to pause the slideshow when the "Next" button is clicked.
  pauseOnPrevClick : true, // True to pause the slideshow when the "Prev" button is clicked.
  slideIdArray : [],
  slideIdCount : 0,
  isSlideshow : false,
  isPaused : false,
  loopSlides : false,

  // Iframe options.
  isLightframe : false,
  iframe_width : 600,
  iframe_height : 400,
  iframe_border : 1,

  // Video and modal options.
  enableVideo : false,
  flvPlayer : '/flvplayer.swf',
  flvFlashvars : '',
  isModal : false,
  isVideo : false,
  videoId : false,
  modalWidth : 400,
  modalHeight : 400,
  modalHTML : null,


  // initialize()
  // Constructor runs on completion of the DOM loading.
  // The function inserts html at the bottom of the page which is used
  // to display the shadow overlay and the image container.
  initialize: function() {

    var s = Drupal.settings.lightbox2;
    Lightbox.overlayOpacity = s.overlay_opacity;
    Lightbox.overlayColor = s.overlay_color;
    Lightbox.disableCloseClick = s.disable_close_click;
    Lightbox.resizeSequence = s.resize_sequence;
    Lightbox.resizeSpeed = s.resize_speed;
    Lightbox.fadeInSpeed = s.fade_in_speed;
    Lightbox.slideDownSpeed = s.slide_down_speed;
    Lightbox.borderSize = s.border_size;
    Lightbox.boxColor = s.box_color;
    Lightbox.fontColor = s.font_color;
    Lightbox.topPosition = s.top_position;
    Lightbox.rtl = s.rtl;
    Lightbox.loopItems = s.loop_items;
    Lightbox.keysClose = s.keys_close.split(" ");
    Lightbox.keysPrevious = s.keys_previous.split(" ");
    Lightbox.keysNext = s.keys_next.split(" ");
    Lightbox.keysZoom = s.keys_zoom.split(" ");
    Lightbox.keysPlayPause = s.keys_play_pause.split(" ");
    Lightbox.disableResize = s.disable_resize;
    Lightbox.disableZoom = s.disable_zoom;
    Lightbox.slideInterval = s.slideshow_interval;
    Lightbox.showPlayPause = s.show_play_pause;
    Lightbox.showCaption = s.show_caption;
    Lightbox.autoStart = s.slideshow_automatic_start;
    Lightbox.autoExit = s.slideshow_automatic_exit;
    Lightbox.pauseOnNextClick = s.pause_on_next_click;
    Lightbox.pauseOnPrevClick = s.pause_on_previous_click;
    Lightbox.loopSlides = s.loop_slides;
    Lightbox.alternative_layout = s.use_alt_layout;
    Lightbox.iframe_width = s.iframe_width;
    Lightbox.iframe_height = s.iframe_height;
    Lightbox.iframe_border = s.iframe_border;
    Lightbox.enableVideo = s.enable_video;
    if (s.enable_video) {
      Lightbox.flvPlayer = s.flvPlayer;
      Lightbox.flvFlashvars = s.flvFlashvars;
    }

    // Make the lightbox divs.
    var layout_class = (s.use_alt_layout ? 'lightbox2-alt-layout' : 'lightbox2-orig-layout');
    var output = '<div id="lightbox2-overlay" style="display: none;"></div>\
      <div id="lightbox" style="display: none;" class="' + layout_class + '">\
        <div id="outerImageContainer"></div>\
        <div id="imageDataContainer" class="clearfix">\
          <div id="imageData"></div>\
        </div>\
      </div>';
    var loading = '<div id="loading"><a href="#" id="loadingLink"></a></div>';
    var modal = '<div id="modalContainer" style="display: none;"></div>';
    var frame = '<div id="frameContainer" style="display: none;"></div>';
    var imageContainer = '<div id="imageContainer" style="display: none;"></div>';
    var details = '<div id="imageDetails"></div>';
    var bottomNav = '<div id="bottomNav"></div>';
    var image = '<img id="lightboxImage" alt="" />';
    var hoverNav = '<div id="hoverNav"><a id="prevLink" href="#"></a><a id="nextLink" href="#"></a></div>';
    var frameNav = '<div id="frameHoverNav"><a id="framePrevLink" href="#"></a><a id="frameNextLink" href="#"></a></div>';
    var hoverNav = '<div id="hoverNav"><a id="prevLink" title="' + Drupal.t('Previous') + '" href="#"></a><a id="nextLink" title="' + Drupal.t('Next') + '" href="#"></a></div>';
    var frameNav = '<div id="frameHoverNav"><a id="framePrevLink" title="' + Drupal.t('Previous') + '" href="#"></a><a id="frameNextLink" title="' + Drupal.t('Next') + '" href="#"></a></div>';
    var caption = '<span id="caption"></span>';
    var numberDisplay = '<span id="numberDisplay"></span>';
    var close = '<a id="bottomNavClose" title="' + Drupal.t('Close') + '" href="#"></a>';
    var zoom = '<a id="bottomNavZoom" href="#"></a>';
    var zoomOut = '<a id="bottomNavZoomOut" href="#"></a>';
    var pause = '<a id="lightshowPause" title="' + Drupal.t('Pause Slideshow') + '" href="#" style="display: none;"></a>';
    var play = '<a id="lightshowPlay" title="' + Drupal.t('Play Slideshow') + '" href="#" style="display: none;"></a>';

    $("body").append(output);
    $('#outerImageContainer').append(modal + frame + imageContainer + loading);
    if (!s.use_alt_layout) {
      $('#imageContainer').append(image + hoverNav);
      $('#imageData').append(details + bottomNav);
      $('#imageDetails').append(caption + numberDisplay);
      $('#bottomNav').append(frameNav + close + zoom + zoomOut + pause + play);
    }
    else {
      $('#outerImageContainer').append(bottomNav);
      $('#imageContainer').append(image);
      $('#bottomNav').append(close + zoom + zoomOut);
      $('#imageData').append(hoverNav + details);
      $('#imageDetails').append(caption + numberDisplay + pause + play);
    }

    // Setup onclick handlers.
    if (Lightbox.disableCloseClick) {
      $('#lightbox2-overlay').click(function() { Lightbox.end(); return false; } ).hide();
    }
    $('#loadingLink, #bottomNavClose').click(function() { Lightbox.end('forceClose'); return false; } );
    $('#prevLink, #framePrevLink').click(function() { Lightbox.changeData(Lightbox.activeImage - 1); return false; } );
    $('#nextLink, #frameNextLink').click(function() { Lightbox.changeData(Lightbox.activeImage + 1); return false; } );
    $('#bottomNavZoom').click(function() { Lightbox.changeData(Lightbox.activeImage, true); return false; } );
    $('#bottomNavZoomOut').click(function() { Lightbox.changeData(Lightbox.activeImage, false); return false; } );
    $('#lightshowPause').click(function() { Lightbox.togglePlayPause("lightshowPause", "lightshowPlay"); return false; } );
    $('#lightshowPlay').click(function() { Lightbox.togglePlayPause("lightshowPlay", "lightshowPause"); return false; } );

    // Fix positioning.
    $('#prevLink, #nextLink, #framePrevLink, #frameNextLink').css({ 'paddingTop': Lightbox.borderSize + 'px'});
    $('#imageContainer, #frameContainer, #modalContainer').css({ 'padding': Lightbox.borderSize + 'px'});
    $('#outerImageContainer, #imageDataContainer, #bottomNavClose').css({'backgroundColor': '#' + Lightbox.boxColor, 'color': '#'+Lightbox.fontColor});
    if (Lightbox.alternative_layout) {
      $('#bottomNavZoom, #bottomNavZoomOut').css({'bottom': Lightbox.borderSize + 'px', 'right': Lightbox.borderSize + 'px'});
    }
    else if (Lightbox.rtl == 1 && $.browser.msie) {
      $('#bottomNavZoom, #bottomNavZoomOut').css({'left': '0px'});
    }

    // Force navigation links to always be displayed
    if (s.force_show_nav) {
      $('#prevLink, #nextLink').addClass("force_show_nav");
    }

  },

  // initList()
  // Loops through anchor tags looking for 'lightbox', 'lightshow' and
  // 'lightframe', etc, references and applies onclick events to appropriate
  // links. You can rerun after dynamically adding images w/ajax.
  initList : function(context) {

    if (context == undefined || context == null) {
      context = document;
    }

    // Attach lightbox to any links with rel 'lightbox', 'lightshow' or
    // 'lightframe', etc.
    $("a[rel^='lightbox']:not(.lightbox-processed), area[rel^='lightbox']:not(.lightbox-processed)", context).addClass('lightbox-processed').click(function(e) {
      if (Lightbox.disableCloseClick) {
        $('#lightbox').unbind('click');
        $('#lightbox').click(function() { Lightbox.end('forceClose'); } );
      }
      Lightbox.start(this, false, false, false, false);
      if (e.preventDefault) { e.preventDefault(); }
      return false;
    });
    $("a[rel^='lightshow']:not(.lightbox-processed), area[rel^='lightshow']:not(.lightbox-processed)", context).addClass('lightbox-processed').click(function(e) {
      if (Lightbox.disableCloseClick) {
        $('#lightbox').unbind('click');
        $('#lightbox').click(function() { Lightbox.end('forceClose'); } );
      }
      Lightbox.start(this, true, false, false, false);
      if (e.preventDefault) { e.preventDefault(); }
      return false;
    });
    $("a[rel^='lightframe']:not(.lightbox-processed), area[rel^='lightframe']:not(.lightbox-processed)", context).addClass('lightbox-processed').click(function(e) {
      if (Lightbox.disableCloseClick) {
        $('#lightbox').unbind('click');
        $('#lightbox').click(function() { Lightbox.end('forceClose'); } );
      }
      Lightbox.start(this, false, true, false, false);
      if (e.preventDefault) { e.preventDefault(); }
      return false;
    });
    if (Lightbox.enableVideo) {
      $("a[rel^='lightvideo']:not(.lightbox-processed), area[rel^='lightvideo']:not(.lightbox-processed)", context).addClass('lightbox-processed').click(function(e) {
        if (Lightbox.disableCloseClick) {
          $('#lightbox').unbind('click');
          $('#lightbox').click(function() { Lightbox.end('forceClose'); } );
        }
        Lightbox.start(this, false, false, true, false);
        if (e.preventDefault) { e.preventDefault(); }
        return false;
      });
    }
    $("a[rel^='lightmodal']:not(.lightbox-processed), area[rel^='lightmodal']:not(.lightbox-processed)", context).addClass('lightbox-processed').click(function(e) {
      $('#lightbox').unbind('click');
      // Add classes from the link to the lightbox div - don't include lightbox-processed
      $('#lightbox').addClass($(this).attr('class'));
      $('#lightbox').removeClass('lightbox-processed');
      Lightbox.start(this, false, false, false, true);
      if (e.preventDefault) { e.preventDefault(); }
      return false;
    });
    $("#lightboxAutoModal:not(.lightbox-processed)", context).addClass('lightbox-processed').click(function(e) {
      Lightbox.auto_modal = true;
      $('#lightbox').unbind('click');
      Lightbox.start(this, false, false, false, true);
      if (e.preventDefault) { e.preventDefault(); }
      return false;
    });
  },

  // start()
  // Display overlay and lightbox. If image is part of a set, add siblings to
  // imageArray.
  start: function(imageLink, slideshow, lightframe, lightvideo, lightmodal) {

    Lightbox.isPaused = !Lightbox.autoStart;

    // Replaces hideSelectBoxes() and hideFlash() calls in original lightbox2.
    Lightbox.toggleSelectsFlash('hide');

    // Stretch overlay to fill page and fade in.
    var arrayPageSize = Lightbox.getPageSize();
    $("#lightbox2-overlay").hide().css({
      'width': '100%',
      'zIndex': '10090',
      'height': arrayPageSize[1] + 'px',
      'backgroundColor' : '#' + Lightbox.overlayColor
    });
    // Detect OS X FF2 opacity + flash issue.
    if (lightvideo && this.detectMacFF2()) {
      $("#lightbox2-overlay").removeClass("overlay_default");
      $("#lightbox2-overlay").addClass("overlay_macff2");
      $("#lightbox2-overlay").css({'opacity' : null});
    }
    else {
      $("#lightbox2-overlay").removeClass("overlay_macff2");
      $("#lightbox2-overlay").addClass("overlay_default");
      $("#lightbox2-overlay").css({'opacity' : Lightbox.overlayOpacity});
    }
    $("#lightbox2-overlay").fadeIn(Lightbox.fadeInSpeed);


    Lightbox.isSlideshow = slideshow;
    Lightbox.isLightframe = lightframe;
    Lightbox.isVideo = lightvideo;
    Lightbox.isModal = lightmodal;
    Lightbox.imageArray = [];
    Lightbox.imageNum = 0;

    var anchors = $(imageLink.tagName);
    var anchor = null;
    var rel_parts = Lightbox.parseRel(imageLink);
    var rel = rel_parts["rel"];
    var rel_group = rel_parts["group"];
    var title = (rel_parts["title"] ? rel_parts["title"] : imageLink.title);
    var rel_style = null;
    var i = 0;

    if (rel_parts["flashvars"]) {
      Lightbox.flvFlashvars = Lightbox.flvFlashvars + '&' + rel_parts["flashvars"];
    }

    // Set the title for image alternative text.
    var alt = imageLink.title;
    if (!alt) {
      var img = $(imageLink).find("img");
      if (img && $(img).attr("alt")) {
        alt = $(img).attr("alt");
      }
      else {
        alt = title;
      }
    }

    if ($(imageLink).attr('id') == 'lightboxAutoModal') {
      rel_style = rel_parts["style"];
      Lightbox.imageArray.push(['#lightboxAutoModal > *', title, alt, rel_style, 1]);
    }
    else {
      // Handle lightbox images with no grouping.
      if ((rel == 'lightbox' || rel == 'lightshow') && !rel_group) {
        Lightbox.imageArray.push([imageLink.href, title, alt]);
      }

      // Handle other items with no grouping.
      else if (!rel_group) {
        rel_style = rel_parts["style"];
        Lightbox.imageArray.push([imageLink.href, title, alt, rel_style]);
      }

      // Handle grouped items.
      else {

        // Loop through anchors and add them to imageArray.
        for (i = 0; i < anchors.length; i++) {
          anchor = anchors[i];
          if (anchor.href && typeof(anchor.href) == "string" && $(anchor).attr('rel')) {
            var rel_data = Lightbox.parseRel(anchor);
            var anchor_title = (rel_data["title"] ? rel_data["title"] : anchor.title);
            img_alt = anchor.title;
            if (!img_alt) {
              var anchor_img = $(anchor).find("img");
              if (anchor_img && $(anchor_img).attr("alt")) {
                img_alt = $(anchor_img).attr("alt");
              }
              else {
                img_alt = title;
              }
            }
            if (rel_data["rel"] == rel) {
              if (rel_data["group"] == rel_group) {
                if (Lightbox.isLightframe || Lightbox.isModal || Lightbox.isVideo) {
                  rel_style = rel_data["style"];
                }
                Lightbox.imageArray.push([anchor.href, anchor_title, img_alt, rel_style]);
              }
            }
          }
        }

        // Remove duplicates.
        for (i = 0; i < Lightbox.imageArray.length; i++) {
          for (j = Lightbox.imageArray.length-1; j > i; j--) {
            if (Lightbox.imageArray[i][0] == Lightbox.imageArray[j][0]) {
              Lightbox.imageArray.splice(j,1);
            }
          }
        }
        while (Lightbox.imageArray[Lightbox.imageNum][0] != imageLink.href) {
          Lightbox.imageNum++;
        }
      }
    }

    if (Lightbox.isSlideshow && Lightbox.showPlayPause && Lightbox.isPaused) {
      $('#lightshowPlay').show();
      $('#lightshowPause').hide();
    }

    // Calculate top and left offset for the lightbox.
    var arrayPageScroll = Lightbox.getPageScroll();
    var lightboxTop = arrayPageScroll[1] + (Lightbox.topPosition == '' ? (arrayPageSize[3] / 10) : Lightbox.topPosition) * 1;
    var lightboxLeft = arrayPageScroll[0];
    $('#frameContainer, #modalContainer, #lightboxImage').hide();
    $('#hoverNav, #prevLink, #nextLink, #frameHoverNav, #framePrevLink, #frameNextLink').hide();
    $('#imageDataContainer, #numberDisplay, #bottomNavZoom, #bottomNavZoomOut').hide();
    $('#outerImageContainer').css({'width': '250px', 'height': '250px'});
    $('#lightbox').css({
      'zIndex': '10500',
      'top': lightboxTop + 'px',
      'left': lightboxLeft + 'px'
    }).show();

    Lightbox.total = Lightbox.imageArray.length;
    Lightbox.changeData(Lightbox.imageNum);
  },

  // changeData()
  // Hide most elements and preload image in preparation for resizing image
  // container.
  changeData: function(imageNum, zoomIn) {

    if (Lightbox.inprogress === false) {
      if (Lightbox.total > 1 && ((Lightbox.isSlideshow && Lightbox.loopSlides) || (!Lightbox.isSlideshow && Lightbox.loopItems))) {
        if (imageNum >= Lightbox.total) imageNum = 0;
        if (imageNum < 0) imageNum = Lightbox.total - 1;
      }

      if (Lightbox.isSlideshow) {
        for (var i = 0; i < Lightbox.slideIdCount; i++) {
          window.clearTimeout(Lightbox.slideIdArray[i]);
        }
      }
      Lightbox.inprogress = true;
      Lightbox.activeImage = imageNum;

      if (Lightbox.disableResize && !Lightbox.isSlideshow) {
        zoomIn = true;
      }
      Lightbox.isZoomedIn = zoomIn;


      // Hide elements during transition.
      $('#loading').css({'zIndex': '10500'}).show();
      if (!Lightbox.alternative_layout) {
        $('#imageContainer').hide();
      }
      $('#frameContainer, #modalContainer, #lightboxImage').hide();
      $('#hoverNav, #prevLink, #nextLink, #frameHoverNav, #framePrevLink, #frameNextLink').hide();
      $('#imageDataContainer, #numberDisplay, #bottomNavZoom, #bottomNavZoomOut').hide();

      // Preload image content, but not iframe pages.
      if (!Lightbox.isLightframe && !Lightbox.isVideo && !Lightbox.isModal) {
        $("#lightbox #imageDataContainer").removeClass('lightbox2-alt-layout-data');
        imgPreloader = new Image();
        imgPreloader.onerror = function() { Lightbox.imgNodeLoadingError(this); };

        imgPreloader.onload = function() {
          var photo = document.getElementById('lightboxImage');
          photo.src = Lightbox.imageArray[Lightbox.activeImage][0];
          photo.alt = Lightbox.imageArray[Lightbox.activeImage][2];

          var imageWidth = imgPreloader.width;
          var imageHeight = imgPreloader.height;

          // Resize code.
          var arrayPageSize = Lightbox.getPageSize();
          var targ = { w:arrayPageSize[2] - (Lightbox.borderSize * 2), h:arrayPageSize[3] - (Lightbox.borderSize * 6) - (Lightbox.infoHeight * 4) - (arrayPageSize[3] / 10) };
          var orig = { w:imgPreloader.width, h:imgPreloader.height };

          // Image is very large, so show a smaller version of the larger image
          // with zoom button.
          if (zoomIn !== true) {
            var ratio = 1.0; // Shrink image with the same aspect.
            $('#bottomNavZoomOut, #bottomNavZoom').hide();
            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;
              if (!Lightbox.disableZoom && !Lightbox.isSlideshow) {
                $('#bottomNavZoom').css({'zIndex': '10500'}).show();
              }
            }

            imageWidth  = Math.floor(orig.w * ratio);
            imageHeight = Math.floor(orig.h * ratio);
          }

          else {
            $('#bottomNavZoom').hide();
            // Only display zoom out button if the image is zoomed in already.
            if ((orig.w >= targ.w || orig.h >= targ.h) && orig.h && orig.w) {
              // Only display zoom out button if not a slideshow and if the
              // buttons aren't disabled.
              if (!Lightbox.disableResize && Lightbox.isSlideshow === false && !Lightbox.disableZoom) {
                $('#bottomNavZoomOut').css({'zIndex': '10500'}).show();
              }
            }
          }

          photo.style.width = (imageWidth) + 'px';
          photo.style.height = (imageHeight) + 'px';
          Lightbox.resizeContainer(imageWidth, imageHeight);

          // Clear onLoad, IE behaves irratically with animated gifs otherwise.
          imgPreloader.onload = function() {};
        };

        imgPreloader.src = Lightbox.imageArray[Lightbox.activeImage][0];
        imgPreloader.alt = Lightbox.imageArray[Lightbox.activeImage][2];
      }

      // Set up frame size, etc.
      else if (Lightbox.isLightframe) {
        $("#lightbox #imageDataContainer").addClass('lightbox2-alt-layout-data');
        var src = Lightbox.imageArray[Lightbox.activeImage][0];
        $('#frameContainer').html('<iframe id="lightboxFrame" style="display: none;" src="'+src+'"></iframe>');

        // Enable swf support in Gecko browsers.
        if ($.browser.mozilla && src.indexOf('.swf') != -1) {
          setTimeout(function () {
            document.getElementById("lightboxFrame").src = Lightbox.imageArray[Lightbox.activeImage][0];
          }, 1000);
        }

        if (!Lightbox.iframe_border) {
          $('#lightboxFrame').css({'border': 'none'});
          $('#lightboxFrame').attr('frameborder', '0');
        }
        var iframe = document.getElementById('lightboxFrame');
        var iframeStyles = Lightbox.imageArray[Lightbox.activeImage][3];
        iframe = Lightbox.setStyles(iframe, iframeStyles);
        Lightbox.resizeContainer(parseInt(iframe.width, 10), parseInt(iframe.height, 10));
      }
      else if (Lightbox.isVideo || Lightbox.isModal) {
        $("#lightbox #imageDataContainer").addClass('lightbox2-alt-layout-data');
        var container = document.getElementById('modalContainer');
        var modalStyles = Lightbox.imageArray[Lightbox.activeImage][3];
        container = Lightbox.setStyles(container, modalStyles);
        if (Lightbox.isVideo) {
          Lightbox.modalHeight =  parseInt(container.height, 10) - 10;
          Lightbox.modalWidth =  parseInt(container.width, 10) - 10;
          Lightvideo.startVideo(Lightbox.imageArray[Lightbox.activeImage][0]);
        }
        Lightbox.resizeContainer(parseInt(container.width, 10), parseInt(container.height, 10));
      }
    }
  },

  // imgNodeLoadingError()
  imgNodeLoadingError: function(image) {
    var s = Drupal.settings.lightbox2;
    var original_image = Lightbox.imageArray[Lightbox.activeImage][0];
    if (s.display_image_size !== "") {
      original_image = original_image.replace(new RegExp("."+s.display_image_size), "");
    }
    Lightbox.imageArray[Lightbox.activeImage][0] = original_image;
    image.onerror = function() { Lightbox.imgLoadingError(image); };
    image.src = original_image;
  },

  // imgLoadingError()
  imgLoadingError: function(image) {
    var s = Drupal.settings.lightbox2;
    Lightbox.imageArray[Lightbox.activeImage][0] = s.default_image;
    image.src = s.default_image;
  },

  // resizeContainer()
  resizeContainer: function(imgWidth, imgHeight) {

    imgWidth = (imgWidth < Lightbox.minWidth ? Lightbox.minWidth : imgWidth);

    this.widthCurrent = $('#outerImageContainer').width();
    this.heightCurrent = $('#outerImageContainer').height();

    var widthNew = (imgWidth  + (Lightbox.borderSize * 2));
    var heightNew = (imgHeight  + (Lightbox.borderSize * 2));

    // Scalars based on change from old to new.
    this.xScale = ( widthNew / this.widthCurrent) * 100;
    this.yScale = ( heightNew / this.heightCurrent) * 100;

    // Calculate size difference between new and old image, and resize if
    // necessary.
    wDiff = this.widthCurrent - widthNew;
    hDiff = this.heightCurrent - heightNew;

    $('#modalContainer').css({'width': imgWidth, 'height': imgHeight});
    // Detect animation sequence.
    if (Lightbox.resizeSequence) {
      var animate1 = {width: widthNew};
      var animate2 = {height: heightNew};
      if (Lightbox.resizeSequence == 2) {
        animate1 = {height: heightNew};
        animate2 = {width: widthNew};
      }
      $('#outerImageContainer').animate(animate1, Lightbox.resizeSpeed).animate(animate2, Lightbox.resizeSpeed, 'linear', function() { Lightbox.showData(); });
    }
    // Simultaneous.
    else {
      $('#outerImageContainer').animate({'width': widthNew, 'height': heightNew}, Lightbox.resizeSpeed, 'linear', function() { Lightbox.showData(); });
    }

    // If new and old image are same size and no scaling transition is necessary
    // do a quick pause to prevent image flicker.
    if ((hDiff === 0) && (wDiff === 0)) {
      if ($.browser.msie) {
        Lightbox.pause(250);
      }
      else {
        Lightbox.pause(100);
      }
    }

    var s = Drupal.settings.lightbox2;
    if (!s.use_alt_layout) {
      $('#prevLink, #nextLink').css({'height': imgHeight + 'px'});
    }
    $('#imageDataContainer').css({'width': widthNew + 'px'});
  },

  // showData()
  // Display image and begin preloading neighbors.
  showData: function() {
    $('#loading').hide();

    if (Lightbox.isLightframe || Lightbox.isVideo || Lightbox.isModal) {
      Lightbox.updateDetails();
      if (Lightbox.isLightframe) {
        $('#frameContainer').show();
        if ($.browser.safari || Lightbox.fadeInSpeed === 0) {
          $('#lightboxFrame').css({'zIndex': '10500'}).show();
        }
        else {
          $('#lightboxFrame').css({'zIndex': '10500'}).fadeIn(Lightbox.fadeInSpeed);
        }
      }
      else {
        if (Lightbox.isVideo) {
          $("#modalContainer").html(Lightbox.modalHTML).click(function(){return false;}).css('zIndex', '10500').show();
        }
        else {
          var src = unescape(Lightbox.imageArray[Lightbox.activeImage][0]);
          if (Lightbox.imageArray[Lightbox.activeImage][4]) {
            $(src).appendTo("#modalContainer");
            $('#modalContainer').css({'zIndex': '10500'}).show();
          }
          else {
            // Use a callback to show the new image, otherwise you get flicker.
            $("#modalContainer").hide().load(src, function () {$('#modalContainer').css({'zIndex': '10500'}).show();});
          }
          $('#modalContainer').unbind('click');
        }
        // This might be needed in the Lightframe section above.
        //$('#modalContainer').css({'zIndex': '10500'}).show();
      }
    }

    // Handle display of image content.
    else {
      $('#imageContainer').show();
      if ($.browser.safari || Lightbox.fadeInSpeed === 0) {
        $('#lightboxImage').css({'zIndex': '10500'}).show();
      }
      else {
        $('#lightboxImage').css({'zIndex': '10500'}).fadeIn(Lightbox.fadeInSpeed);
      }
      Lightbox.updateDetails();
      this.preloadNeighborImages();
    }
    Lightbox.inprogress = false;

    // Slideshow specific stuff.
    if (Lightbox.isSlideshow) {
      if (!Lightbox.loopSlides && Lightbox.activeImage == (Lightbox.total - 1)) {
        if (Lightbox.autoExit) {
          Lightbox.slideIdArray[Lightbox.slideIdCount++] = setTimeout(function () {Lightbox.end('slideshow');}, Lightbox.slideInterval);
        }
      }
      else {
        if (!Lightbox.isPaused && Lightbox.total > 1) {
          Lightbox.slideIdArray[Lightbox.slideIdCount++] = setTimeout(function () {Lightbox.changeData(Lightbox.activeImage + 1);}, Lightbox.slideInterval);
        }
      }
      if (Lightbox.showPlayPause && Lightbox.total > 1 && !Lightbox.isPaused) {
        $('#lightshowPause').show();
        $('#lightshowPlay').hide();
      }
      else if (Lightbox.showPlayPause && Lightbox.total > 1) {
        $('#lightshowPause').hide();
        $('#lightshowPlay').show();
      }
    }

    // Adjust the page overlay size.
    var arrayPageSize = Lightbox.getPageSize();
    var arrayPageScroll = Lightbox.getPageScroll();
    var pageHeight = arrayPageSize[1];
    if (Lightbox.isZoomedIn && arrayPageSize[1] > arrayPageSize[3]) {
      var lightboxTop = (Lightbox.topPosition == '' ? (arrayPageSize[3] / 10) : Lightbox.topPosition) * 1;
      pageHeight = pageHeight + arrayPageScroll[1] + lightboxTop;
    }
    $('#lightbox2-overlay').css({'height': pageHeight + 'px', 'width': arrayPageSize[0] + 'px'});

    // Gecko browsers (e.g. Firefox, SeaMonkey, etc) don't handle pdfs as
    // expected.
    if ($.browser.mozilla) {
      if (Lightbox.imageArray[Lightbox.activeImage][0].indexOf(".pdf") != -1) {
        setTimeout(function () {
          document.getElementById("lightboxFrame").src = Lightbox.imageArray[Lightbox.activeImage][0];
        }, 1000);
      }
    }
  },

  // updateDetails()
  // Display caption, image number, and bottom nav.
  updateDetails: function() {

    $("#imageDataContainer").hide();

    var s = Drupal.settings.lightbox2;

    if (s.show_caption) {
      var caption = Lightbox.filterXSS(Lightbox.imageArray[Lightbox.activeImage][1]);
      if (!caption) caption = '';
      $('#caption').html(caption).css({'zIndex': '10500'}).show();
    }

    // If image is part of set display 'Image x of x'.
    var numberDisplay = null;
    if (s.image_count && Lightbox.total > 1) {
      var currentImage = Lightbox.activeImage + 1;
      if (!Lightbox.isLightframe && !Lightbox.isModal && !Lightbox.isVideo) {
        numberDisplay = s.image_count.replace(/\!current/, currentImage).replace(/\!total/, Lightbox.total);
      }
      else if (Lightbox.isVideo) {
        numberDisplay = s.video_count.replace(/\!current/, currentImage).replace(/\!total/, Lightbox.total);
      }
      else {
        numberDisplay = s.page_count.replace(/\!current/, currentImage).replace(/\!total/, Lightbox.total);
      }
      $('#numberDisplay').html(numberDisplay).css({'zIndex': '10500'}).show();
    }
    else {
      $('#numberDisplay').hide();
    }

    $("#imageDataContainer").hide().slideDown(Lightbox.slideDownSpeed, function() {
      $("#bottomNav").show();
    });
    if (Lightbox.rtl == 1) {
      $("#bottomNav").css({'float': 'left'});
    }
    Lightbox.updateNav();
  },

  // updateNav()
  // Display appropriate previous and next hover navigation.
  updateNav: function() {

    $('#hoverNav').css({'zIndex': '10500'}).show();
    var prevLink = '#prevLink';
    var nextLink = '#nextLink';

    // Slideshow is separated as we need to show play / pause button.
    if (Lightbox.isSlideshow) {
      if ((Lightbox.total > 1 && Lightbox.loopSlides) || Lightbox.activeImage !== 0) {
        $(prevLink).css({'zIndex': '10500'}).show().click(function() {
          if (Lightbox.pauseOnPrevClick) {
            Lightbox.togglePlayPause("lightshowPause", "lightshowPlay");
          }
          Lightbox.changeData(Lightbox.activeImage - 1); return false;
        });
      }
      else {
        $(prevLink).hide();
      }

      // If not last image in set, display next image button.
      if ((Lightbox.total > 1 && Lightbox.loopSlides) || Lightbox.activeImage != (Lightbox.total - 1)) {
        $(nextLink).css({'zIndex': '10500'}).show().click(function() {
          if (Lightbox.pauseOnNextClick) {
            Lightbox.togglePlayPause("lightshowPause", "lightshowPlay");
          }
          Lightbox.changeData(Lightbox.activeImage + 1); return false;
        });
      }
      // Safari browsers need to have hide() called again.
      else {
        $(nextLink).hide();
      }
    }

    // All other types of content.
    else {

      if ((Lightbox.isLightframe || Lightbox.isModal || Lightbox.isVideo) && !Lightbox.alternative_layout) {
        $('#frameHoverNav').css({'zIndex': '10500'}).show();
        $('#hoverNav').css({'zIndex': '10500'}).hide();
        prevLink = '#framePrevLink';
        nextLink = '#frameNextLink';
      }

      // If not first image in set, display prev image button.
      if ((Lightbox.total > 1 && Lightbox.loopItems) || Lightbox.activeImage !== 0) {
        // Unbind any other click handlers, otherwise this adds a new click handler
        // each time the arrow is clicked.
        $(prevLink).css({'zIndex': '10500'}).show().unbind().click(function() {
          Lightbox.changeData(Lightbox.activeImage - 1); return false;
        });
      }
      // Safari browsers need to have hide() called again.
      else {
        $(prevLink).hide();
      }

      // If not last image in set, display next image button.
      if ((Lightbox.total > 1 && Lightbox.loopItems) || Lightbox.activeImage != (Lightbox.total - 1)) {
        // Unbind any other click handlers, otherwise this adds a new click handler
        // each time the arrow is clicked.
        $(nextLink).css({'zIndex': '10500'}).show().unbind().click(function() {
          Lightbox.changeData(Lightbox.activeImage + 1); return false;
        });
      }
      // Safari browsers need to have hide() called again.
      else {
        $(nextLink).hide();
      }
    }

    // Don't enable keyboard shortcuts so forms will work.
    if (!Lightbox.isModal) {
      this.enableKeyboardNav();
    }
  },


  // enableKeyboardNav()
  enableKeyboardNav: function() {
    $(document).bind("keydown", this.keyboardAction);
  },

  // disableKeyboardNav()
  disableKeyboardNav: function() {
    $(document).unbind("keydown", this.keyboardAction);
  },

  // keyboardAction()
  keyboardAction: function(e) {
    if (e === null) { // IE.
      keycode = event.keyCode;
      escapeKey = 27;
    }
    else { // Mozilla.
      keycode = e.keyCode;
      escapeKey = e.DOM_VK_ESCAPE;
    }

    key = String.fromCharCode(keycode).toLowerCase();

    // Close lightbox.
    if (Lightbox.checkKey(Lightbox.keysClose, key, keycode)) {
      Lightbox.end('forceClose');
    }
    // Display previous image (p, <-).
    else if (Lightbox.checkKey(Lightbox.keysPrevious, key, keycode)) {
      if ((Lightbox.total > 1 && ((Lightbox.isSlideshow && Lightbox.loopSlides) || (!Lightbox.isSlideshow && Lightbox.loopItems))) || Lightbox.activeImage !== 0) {
        Lightbox.changeData(Lightbox.activeImage - 1);
      }

    }
    // Display next image (n, ->).
    else if (Lightbox.checkKey(Lightbox.keysNext, key, keycode)) {
      if ((Lightbox.total > 1 && ((Lightbox.isSlideshow && Lightbox.loopSlides) || (!Lightbox.isSlideshow && Lightbox.loopItems))) || Lightbox.activeImage != (Lightbox.total - 1)) {
        Lightbox.changeData(Lightbox.activeImage + 1);
      }
    }
    // Zoom in.
    else if (Lightbox.checkKey(Lightbox.keysZoom, key, keycode) && !Lightbox.disableResize && !Lightbox.disableZoom && !Lightbox.isSlideshow && !Lightbox.isLightframe) {
      if (Lightbox.isZoomedIn) {
        Lightbox.changeData(Lightbox.activeImage, false);
      }
      else if (!Lightbox.isZoomedIn) {
        Lightbox.changeData(Lightbox.activeImage, true);
      }
      return false;
    }
    // Toggle play / pause (space).
    else if (Lightbox.checkKey(Lightbox.keysPlayPause, key, keycode) && Lightbox.isSlideshow) {

      if (Lightbox.isPaused) {
        Lightbox.togglePlayPause("lightshowPlay", "lightshowPause");
      }
      else {
        Lightbox.togglePlayPause("lightshowPause", "lightshowPlay");
      }
      return false;
    }
  },

  preloadNeighborImages: function() {

    if ((Lightbox.total - 1) > Lightbox.activeImage) {
      preloadNextImage = new Image();
      preloadNextImage.src = Lightbox.imageArray[Lightbox.activeImage + 1][0];
    }
    if (Lightbox.activeImage > 0) {
      preloadPrevImage = new Image();
      preloadPrevImage.src = Lightbox.imageArray[Lightbox.activeImage - 1][0];
    }

  },

  end: function(caller) {
    var closeClick = (caller == 'slideshow' ? false : true);
    if (Lightbox.isSlideshow && Lightbox.isPaused && !closeClick) {
      return;
    }
    // To prevent double clicks on navigation links.
    if (Lightbox.inprogress === true && caller != 'forceClose') {
      return;
    }
    Lightbox.disableKeyboardNav();
    $('#lightbox').hide();
    $("#lightbox2-overlay").fadeOut();
    Lightbox.isPaused = true;
    Lightbox.inprogress = false;
    // Replaces calls to showSelectBoxes() and showFlash() in original
    // lightbox2.
    Lightbox.toggleSelectsFlash('visible');
    if (Lightbox.isSlideshow) {
      for (var i = 0; i < Lightbox.slideIdCount; i++) {
        window.clearTimeout(Lightbox.slideIdArray[i]);
      }
      $('#lightshowPause, #lightshowPlay').hide();
    }
    else if (Lightbox.isLightframe) {
      $('#frameContainer').empty().hide();
    }
    else if (Lightbox.isVideo || Lightbox.isModal) {
      if (!Lightbox.auto_modal) {
        $('#modalContainer').hide().html("");
      }
      Lightbox.auto_modal = false;
    }
  },


  // getPageScroll()
  // Returns array with x,y page scroll values.
  // Core code from - quirksmode.com.
  getPageScroll : function() {

    var xScroll, yScroll;

    if (self.pageYOffset || self.pageXOffset) {
      yScroll = self.pageYOffset;
      xScroll = self.pageXOffset;
    }
    else if (document.documentElement && (document.documentElement.scrollTop || document.documentElement.scrollLeft)) {  // Explorer 6 Strict.
      yScroll = document.documentElement.scrollTop;
      xScroll = document.documentElement.scrollLeft;
    }
    else if (document.body) {// All other Explorers.
      yScroll = document.body.scrollTop;
      xScroll = document.body.scrollLeft;
    }

    arrayPageScroll = [xScroll,yScroll];
    return arrayPageScroll;
  },

  // getPageSize()
  // Returns array with page width, height and window width, height.
  // Core code from - quirksmode.com.
  // Edit for Firefox by pHaez.

  getPageSize : function() {

    var xScroll, yScroll;

    if (window.innerHeight && window.scrollMaxY) {
      xScroll = window.innerWidth + window.scrollMaxX;
      yScroll = window.innerHeight + window.scrollMaxY;
    }
    else if (document.body.scrollHeight > document.body.offsetHeight) { // All but Explorer Mac.
      xScroll = document.body.scrollWidth;
      yScroll = document.body.scrollHeight;
    }
    else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari.
      xScroll = document.body.offsetWidth;
      yScroll = document.body.offsetHeight;
    }

    var windowWidth, windowHeight;

    if (self.innerHeight) { // All except Explorer.
      if (document.documentElement.clientWidth) {
        windowWidth = document.documentElement.clientWidth;
      }
      else {
        windowWidth = self.innerWidth;
      }
      windowHeight = self.innerHeight;
    }
    else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode.
      windowWidth = document.documentElement.clientWidth;
      windowHeight = document.documentElement.clientHeight;
    }
    else if (document.body) { // Other Explorers.
      windowWidth = document.body.clientWidth;
      windowHeight = document.body.clientHeight;
    }
    // For small pages with total height less than height of the viewport.
    if (yScroll < windowHeight) {
      pageHeight = windowHeight;
    }
    else {
      pageHeight = yScroll;
    }
    // For small pages with total width less than width of the viewport.
    if (xScroll < windowWidth) {
      pageWidth = xScroll;
    }
    else {
      pageWidth = windowWidth;
    }
    arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight);
    return arrayPageSize;
  },


  // pause(numberMillis)
  pause : function(ms) {
    var date = new Date();
    var curDate = null;
    do { curDate = new Date(); }
    while (curDate - date < ms);
  },


  // toggleSelectsFlash()
  // Hide / unhide select lists and flash objects as they appear above the
  // lightbox in some browsers.
  toggleSelectsFlash: function (state) {
    if (state == 'visible') {
      $("select.lightbox_hidden, embed.lightbox_hidden, object.lightbox_hidden").show();
    }
    else if (state == 'hide') {
      $("select:visible, embed:visible, object:visible").not('#lightboxAutoModal select, #lightboxAutoModal embed, #lightboxAutoModal object').addClass("lightbox_hidden");
      $("select.lightbox_hidden, embed.lightbox_hidden, object.lightbox_hidden").hide();
    }
  },


  // parseRel()
  parseRel: function (link) {
    var parts = [];
    parts["rel"] = parts["title"] = parts["group"] = parts["style"] = parts["flashvars"] = null;
    if (!$(link).attr('rel')) return parts;
    parts["rel"] = $(link).attr('rel').match(/\w+/)[0];

    if ($(link).attr('rel').match(/\[(.*)\]/)) {
      var info = $(link).attr('rel').match(/\[(.*?)\]/)[1].split('|');
      parts["group"] = info[0];
      parts["style"] = info[1];
      if (parts["style"] != undefined && parts["style"].match(/flashvars:\s?(.*?);/)) {
        parts["flashvars"] = parts["style"].match(/flashvars:\s?(.*?);/)[1];
      }
    }
    if ($(link).attr('rel').match(/\[.*\]\[(.*)\]/)) {
      parts["title"] = $(link).attr('rel').match(/\[.*\]\[(.*)\]/)[1];
    }
    return parts;
  },

  // setStyles()
  setStyles: function(item, styles) {
    item.width = Lightbox.iframe_width;
    item.height = Lightbox.iframe_height;
    item.scrolling = "auto";

    if (!styles) return item;
    var stylesArray = styles.split(';');
    for (var i = 0; i< stylesArray.length; i++) {
      if (stylesArray[i].indexOf('width:') >= 0) {
        var w = stylesArray[i].replace('width:', '');
        item.width = jQuery.trim(w);
      }
      else if (stylesArray[i].indexOf('height:') >= 0) {
        var h = stylesArray[i].replace('height:', '');
        item.height = jQuery.trim(h);
      }
      else if (stylesArray[i].indexOf('scrolling:') >= 0) {
        var scrolling = stylesArray[i].replace('scrolling:', '');
        item.scrolling = jQuery.trim(scrolling);
      }
      else if (stylesArray[i].indexOf('overflow:') >= 0) {
        var overflow = stylesArray[i].replace('overflow:', '');
        item.overflow = jQuery.trim(overflow);
      }
    }
    return item;
  },


  // togglePlayPause()
  // Hide the pause / play button as appropriate.  If pausing the slideshow also
  // clear the timers, otherwise move onto the next image.
  togglePlayPause: function(hideId, showId) {
    if (Lightbox.isSlideshow && hideId == "lightshowPause") {
      for (var i = 0; i < Lightbox.slideIdCount; i++) {
        window.clearTimeout(Lightbox.slideIdArray[i]);
      }
    }
    $('#' + hideId).hide();
    $('#' + showId).show();

    if (hideId == "lightshowPlay") {
      Lightbox.isPaused = false;
      if (!Lightbox.loopSlides && Lightbox.activeImage == (Lightbox.total - 1)) {
        Lightbox.end();
      }
      else if (Lightbox.total > 1) {
        Lightbox.changeData(Lightbox.activeImage + 1);
      }
    }
    else {
      Lightbox.isPaused = true;
    }
  },

  triggerLightbox: function (rel_type, rel_group) {
    if (rel_type.length) {
      if (rel_group && rel_group.length) {
        $("a[rel^='" + rel_type +"\[" + rel_group + "\]'], area[rel^='" + rel_type +"\[" + rel_group + "\]']").eq(0).trigger("click");
      }
      else {
        $("a[rel^='" + rel_type +"'], area[rel^='" + rel_type +"']").eq(0).trigger("click");
      }
    }
  },

  detectMacFF2: function() {
    var ua = navigator.userAgent.toLowerCase();
    if (/firefox[\/\s](\d+\.\d+)/.test(ua)) {
      var ffversion = new Number(RegExp.$1);
      if (ffversion < 3 && ua.indexOf('mac') != -1) {
        return true;
      }
    }
    return false;
  },

  checkKey: function(keys, key, code) {
    return (jQuery.inArray(key, keys) != -1 || jQuery.inArray(String(code), keys) != -1);
  },

  filterXSS: function(str, allowed_tags) {
    var output = "";
    $.ajax({
      url: Drupal.settings.basePath + 'system/lightbox2/filter-xss',
      data: {
        'string' : str,
        'allowed_tags' : allowed_tags
      },
      type: "POST",
      async: false,
      dataType:  "json",
      success: function(data) {
        output = data;
      }
    });
    return output;
  }

};

// Initialize the lightbox.
Drupal.behaviors.initLightbox = function (context) {
  $('body:not(.lightbox-processed)', context).addClass('lightbox-processed').each(function() {
    Lightbox.initialize();
    return false; // Break the each loop.
  });

  // Attach lightbox to any links with lightbox rels.
  Lightbox.initList(context);
  $('#lightboxAutoModal', context).triggerHandler('click');
};

