jquery.colorbox.js

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// ColorBox v1.3.9 - a full featured, light-weight, customizable lightbox based on jQuery 1.3
// c) 2009 Jack Moore - www.colorpowered.com - jack@colorpowered.com
// Licensed under the MIT license: http://www.opensource.org/licenses/mit-license.php
(function ($, window) {
      
      var
      // ColorBox Default Settings. 
      // See http://colorpowered.com/colorbox for details.
      defaults = {
            transition: "elastic",
            speed: 300,
            width: false,
            initialWidth: "600",
            innerWidth: false,
            maxWidth: false,
            height: false,
            initialHeight: "450",
            innerHeight: false,
            maxHeight: false,
            scalePhotos: true,
            scrolling: true,
            inline: false,
            html: false,
            iframe: false,
            photo: false,
            href: false,
            title: false,
            rel: false,
            opacity: 0.9,
            preloading: true,
            current: "image {current} of {total}",
            previous: "previous",
            next: "next",
            close: "close",
            open: false,
            loop: true,
            slideshow: false,
            slideshowAuto: true,
            slideshowSpeed: 2500,
            slideshowStart: "start slideshow",
            slideshowStop: "stop slideshow",
            onOpen: false,
            onLoad: false,
            onComplete: false,
            onCleanup: false,
            onClosed: false,
            overlayClose: true,           
            escKey: true,
            arrowKey: true
      },
      
      // Abstracting the HTML and event identifiers for easy rebranding
      colorbox = 'colorbox',
      prefix = 'cbox',
      
      // Events   
      event_open = prefix + '_open',
      event_load = prefix + '_load',
      event_complete = prefix + '_complete',
      event_cleanup = prefix + '_cleanup',
      event_closed = prefix + '_closed',
      
      // Special Handling for IE
      isIE = $.browser.msie && !$.support.opacity, // feature detection alone gave a false positive on at least one phone browser and on some development versions of Chrome.
      isIE6 = isIE && $.browser.version < 7,
      event_ie6 = prefix + '_IE6',

      // Cached jQuery Object Variables
      $overlay,
      $box,
      $wrap,
      $content,
      $topBorder,
      $leftBorder,
      $rightBorder,
      $bottomBorder,
      $related,
      $window,
      $loaded,
      $loadingBay,
      $loadingOverlay,
      $title,
      $current,
      $slideshow,
      $next,
      $prev,
      $close,

      // Variables for cached values or use across multiple functions
      interfaceHeight,
      interfaceWidth,
      loadedHeight,
      loadedWidth,
      element,
      bookmark,
      index,
      settings,
      open,
      active,
      
      publicMethod,
      boxElement = prefix + 'Element';
      
      // ****************
      // HELPER FUNCTIONS
      // ****************

      // jQuery object generator to reduce code size
      function $div(id, css) { 
            id = id ? ' id="' + prefix + id + '"' : '';
            css = css ? ' style="' + css + '"' : '';
            return $('<div' + id + css + '/>');
      }

      // Convert % values to pixels
      function setSize(size, dimension) {
            dimension = dimension === 'x' ? $window.width() : $window.height();
            return (typeof size === 'string') ? Math.round((size.match(/%/) ? (dimension / 100) * parseInt(size, 10) : parseInt(size, 10))) : size;
      }

      // Checks an href to see if it is a photo.
      // There is a force photo option (photo: true) for hrefs that cannot be matched by this regex.
      function isImage(url) {
            url = $.isFunction(url) ? url.call(element) : url;
            return settings.photo || url.match(/\.(gif|png|jpg|jpeg|bmp)(?:\?([^#]*))?(?:#(\.*))?$/i);
      }
      
      // Assigns functions results to their respective settings.  This allows functions to be used to set ColorBox options.
      function process() {
            for (var i in settings) {
                  if ($.isFunction(settings[i]) && i.substring(0, 2) !== 'on') { // checks to make sure the function isn't one of the callbacks, they will be handled at the appropriate time.
                      settings[i] = settings[i].call(element);
                  }
            }
            settings.rel = settings.rel || element.rel || 'nofollow';
            settings.href = settings.href || $(element).attr('href');
            settings.title = settings.title || element.title;
      }

      function launch(elem) {
            
            element = elem;
            
            settings = $.extend({}, $(element).data(colorbox));
            
            process(); // Convert functions to their returned values.
            
            if (settings.rel !== 'nofollow') {
                  $related = $('.' + boxElement).filter(function () {
                        var relRelated = $(this).data(colorbox).rel || this.rel;
                        return (relRelated === settings.rel);
                  });
                  index = $related.index(element);
                  
                  // Check direct calls to ColorBox.
                  if (index === -1) {
                        $related = $related.add(element);
                        index = $related.length - 1;
                  }
            } else {
                  $related = $(element);
                  index = 0;
            }
            
            if (!open) {
                  open = active = true; // Prevents the page-change action from queuing up if the visitor holds down the left or right keys.
                  
                  bookmark = element;
                  
                  try {
                        bookmark.blur(); // Remove the focus from the calling element.
                  }catch (e) {}
                  
                  $.event.trigger(event_open);
                  if (settings.onOpen) {
                        settings.onOpen.call(element);
                  }
                  
                  // +settings.opacity avoids a problem in IE when using non-zero-prefixed-string-values, like '.5'
                  $overlay.css({"opacity": +settings.opacity, "cursor": settings.overlayClose ? "pointer" : "auto"}).show();
                  
                  // Opens inital empty ColorBox prior to content being loaded.
                  settings.w = setSize(settings.initialWidth, 'x');
                  settings.h = setSize(settings.initialHeight, 'y');
                  publicMethod.position(0);
                  
                  if (isIE6) {
                        $window.bind('resize.' + event_ie6 + ' scroll.' + event_ie6, function () {
                              $overlay.css({width: $window.width(), height: $window.height(), top: $window.scrollTop(), left: $window.scrollLeft()});
                        }).trigger('scroll.' + event_ie6);
                  }
            }
            
            $current.add($prev).add($next).add($slideshow).add($title).hide();
            
            $close.html(settings.close).show();
            
            publicMethod.slideshow();
            
            publicMethod.load();
      }

      // ****************
      // PUBLIC FUNCTIONS
      // Usage format: $.fn.colorbox.close();
      // Usage from within an iframe: parent.$.fn.colorbox.close();
      // ****************
      
      publicMethod = $.fn[colorbox] = $[colorbox] = function (options, callback) {
            var $this = this;
            
            if (!$this[0] && $this.selector) { // if a selector was given and it didn't match any elements, go ahead and exit.
                  return $this;
            }
            
            options = options || {};
            
            if (callback) {
                  options.onComplete = callback;
            }
            
            if (!$this[0] || $this.selector === undefined) { // detects $.colorbox() and $.fn.colorbox()
                  $this = $('<a/>');
                  options.open = true; // assume an immediate open
            }
            
            $this.each(function () {
                  $(this).data(colorbox, $.extend({}, $(this).data(colorbox) || defaults, options)).addClass(boxElement);
            });
            
            if (options.open) {
                  launch($this[0]);
            }
            
            return $this;
      };

      // Initialize ColorBox: store common calculations, preload the interface graphics, append the html.
      // This preps colorbox for a speedy open when clicked, and lightens the burdon on the browser by only
      // having to run once, instead of each time colorbox is opened.
      publicMethod.init = function () {
            // Create & Append jQuery Objects
            $window = $(window);
            $box = $div().attr({id: colorbox, 'class': isIE ? prefix + 'IE' : ''});
            $overlay = $div("Overlay", isIE6 ? 'position:absolute' : '').hide();
            
            $wrap = $div("Wrapper");
            $content = $div("Content").append(
                  $loaded = $div("LoadedContent", 'width:0; height:0'),
                  $loadingOverlay = $div("LoadingOverlay").add($div("LoadingGraphic")),
                  $title = $div("Title"),
                  $current = $div("Current"),
                  $next = $div("Next"),
                  $prev = $div("Previous"),
                  $slideshow = $div("Slideshow"),
                  $close = $div("Close")
            );
            $wrap.append( // The 3x3 Grid that makes up ColorBox
                  $div().append(
                        $div("TopLeft"),
                        $topBorder = $div("TopCenter"),
                        $div("TopRight")
                  ),
                  $div().append(
                        $leftBorder = $div("MiddleLeft"),
                        $content,
                        $rightBorder = $div("MiddleRight")
                  ),
                  $div().append(
                        $div("BottomLeft"),
                        $bottomBorder = $div("BottomCenter"),
                        $div("BottomRight")
                  )
            ).children().children().css({'float': 'left'});
            
            $loadingBay = $div(false, 'position:absolute; width:9999px; visibility:hidden; display:none');
            
            $('body').prepend($overlay, $box.append($wrap, $loadingBay));
            
            $content.children()
            .hover(function () {
                  $(this).addClass('hover');
            }, function () {
                  $(this).removeClass('hover');
            }).addClass('hover');
            
            // Cache values needed for size calculations
            interfaceHeight = $topBorder.height() + $bottomBorder.height() + $content.outerHeight(true) - $content.height();//Subtraction needed for IE6
            interfaceWidth = $leftBorder.width() + $rightBorder.width() + $content.outerWidth(true) - $content.width();
            loadedHeight = $loaded.outerHeight(true);
            loadedWidth = $loaded.outerWidth(true);
            
            // Setting padding to remove the need to do size conversions during the animation step.
            $box.css({"padding-bottom": interfaceHeight, "padding-right": interfaceWidth}).hide();
            
            // Setup button events.
            $next.click(publicMethod.next);
            $prev.click(publicMethod.prev);
            $close.click(publicMethod.close);
            
            // Adding the 'hover' class allowed the browser to load the hover-state
            // background graphics.  The class can now can be removed.
            $content.children().removeClass('hover');
            
            $('.' + boxElement).live('click', function (e) {
                  // checks to see if it was a non-left mouse-click and for clicks modified with ctrl, shift, or alt.
                  if ((e.button !== 0 && typeof e.button !== 'undefined') || e.ctrlKey || e.shiftKey || e.altKey) {
                        return true;
                  } else {
                        launch(this);                 
                        return false;
                  }
            });
            
            $overlay.click(function () {
                  if (settings.overlayClose) {
                        publicMethod.close();
                  }
            });
            
            // Set Navigation Key Bindings
            $(document).bind("keydown", function (e) {
                  if (open && settings.escKey && e.keyCode === 27) {
                        e.preventDefault();
                        publicMethod.close();
                  }
                  if (open && settings.arrowKey && !active && $related[1]) {
                        if (e.keyCode === 37 && (index || settings.loop)) {
                              e.preventDefault();
                              $prev.click();
                        } else if (e.keyCode === 39 && (index < $related.length - 1 || settings.loop)) {
                              e.preventDefault();
                              $next.click();
                        }
                  }
            });
      };
      
      publicMethod.remove = function () {
            $box.add($overlay).remove();
            $('.' + boxElement).die('click').removeData(colorbox).removeClass(boxElement);
      };

      publicMethod.position = function (speed, loadedCallback) {
            var
            animate_speed,
            // keeps the top and left positions within the browser's viewport.
            posTop = Math.max($window.height() - settings.h - loadedHeight - interfaceHeight, 0) / 2 + $window.scrollTop(),
            posLeft = Math.max($window.width() - settings.w - loadedWidth - interfaceWidth, 0) / 2 + $window.scrollLeft();
            
            // setting the speed to 0 to reduce the delay between same-sized content.
            animate_speed = ($box.width() === settings.w + loadedWidth && $box.height() === settings.h + loadedHeight) ? 0 : speed;
            
            // this gives the wrapper plenty of breathing room so it's floated contents can move around smoothly,
            // but it has to be shrank down around the size of div#colorbox when it's done.  If not,
            // it can invoke an obscure IE bug when using iframes.
            $wrap[0].style.width = $wrap[0].style.height = "9999px";
            
            function modalDimensions(that) {
                  // loading overlay height has to be explicitly set for IE6.
                  $topBorder[0].style.width = $bottomBorder[0].style.width = $content[0].style.width = that.style.width;
                  $loadingOverlay[0].style.height = $loadingOverlay[1].style.height = $content[0].style.height = $leftBorder[0].style.height = $rightBorder[0].style.height = that.style.height;
            }
            
            $box.dequeue().animate({width: settings.w + loadedWidth, height: settings.h + loadedHeight, top: posTop, left: posLeft}, {
                  duration: animate_speed,
                  complete: function () {
                        modalDimensions(this);
                        
                        active = false;
                        
                        // shrink the wrapper down to exactly the size of colorbox to avoid a bug in IE's iframe implementation.
                        $wrap[0].style.width = (settings.w + loadedWidth + interfaceWidth) + "px";
                        $wrap[0].style.height = (settings.h + loadedHeight + interfaceHeight) + "px";
                        
                        if (loadedCallback) {
                              loadedCallback();
                        }
                  },
                  step: function () {
                        modalDimensions(this);
                  }
            });
      };

      publicMethod.resize = function (options) {
            if (open) {
                  options = options || {};
                  
                  if (options.width) {
                        settings.w = setSize(options.width, 'x') - loadedWidth - interfaceWidth;
                  }
                  if (options.innerWidth) {
                        settings.w = setSize(options.innerWidth, 'x');
                  }
                  $loaded.css({width: settings.w});
                  
                  if (options.height) {
                        settings.h = setSize(options.height, 'y') - loadedHeight - interfaceHeight;
                  }
                  if (options.innerHeight) {
                        settings.h = setSize(options.innerHeight, 'y');
                  }
                  if (!options.innerHeight && !options.height) {                    
                        var $child = $loaded.wrapInner("<div style='overflow:auto'></div>").children(); // temporary wrapper to get an accurate estimate of just how high the total content should be.
                        settings.h = $child.height();
                        $child.replaceWith($child.children()); // ditch the temporary wrapper div used in height calculation
                  }
                  $loaded.css({height: settings.h});
                  
                  publicMethod.position(settings.transition === "none" ? 0 : settings.speed);
            }
      };

      publicMethod.prep = function (object) {
            if (!open) {
                  return;
            }
            
            var photo,
            speed = settings.transition === "none" ? 0 : settings.speed;
            
            $window.unbind('resize.' + prefix);
            $loaded.remove();
            $loaded = $div('LoadedContent').html(object);
            
            function getWidth() {
                  settings.w = settings.w || $loaded.width();
                  settings.w = settings.mw && settings.mw < settings.w ? settings.mw : settings.w;
                  return settings.w;
            }
            function getHeight() {
                  settings.h = settings.h || $loaded.height();
                  settings.h = settings.mh && settings.mh < settings.h ? settings.mh : settings.h;
                  return settings.h;
            }
            
            $loaded.hide()
            .appendTo($loadingBay.show())// content has to be appended to the DOM for accurate size calculations.
            .css({width: getWidth(), overflow: settings.scrolling ? 'auto' : 'hidden'})
            .css({height: getHeight()})// sets the height independently from the width in case the new width influences the value of height.
            .prependTo($content);
            
            $loadingBay.hide();
            
            $('#' + prefix + 'Photo').css({cssFloat: 'none'});// floating the IMG removes the bottom line-height and fixed a problem where IE miscalculates the width of the parent element as 100% of the document width.
            
            // Hides SELECT elements in IE6 because they would otherwise sit on top of the overlay.
            if (isIE6) {
                  $('select').not($box.find('select')).filter(function () {
                        return this.style.visibility !== 'hidden';
                  }).css({'visibility': 'hidden'}).one(event_cleanup, function () {
                        this.style.visibility = 'inherit';
                  });
            }
                        
            function setPosition(s) {
                  var prev, prevSrc, next, nextSrc, total = $related.length, loop = settings.loop;
                  publicMethod.position(s, function () {
                        function defilter() {
                              if (isIE) {
                                    //IE adds a filter when ColorBox fades in and out that can cause problems if the loaded content contains transparent pngs.
                                    $box[0].style.removeAttribute("filter");
                              }
                        }
                        
                        if (!open) {
                              return;
                        }
                        
                        if (isIE) {
                              //This fadeIn helps the bicubic resampling to kick-in.
                              if (photo) {
                                    $loaded.fadeIn(100);
                              }
                        }
                        
                        //Waited until the iframe is added to the DOM & it is visible before setting the src.
                        //This increases compatability with pages using DOM dependent JavaScript.
                        if (settings.iframe) {
                              $("<iframe frameborder=0" + (settings.scrolling ? "" : " scrolling='no'") + (isIE ? " allowtransparency='true'" : '') + "/>")
                              .attr({src: settings.href, name: new Date().getTime()})
                              .appendTo($loaded);
                        }
                        
                        $loaded.show();
                        
                        $title.show().html(settings.title);
                        
                        if (total > 1) { // handle grouping
                              $current.html(settings.current.replace(/\{current\}/, index + 1).replace(/\{total\}/, total)).show();
                              
                              $next[(loop || index < total - 1) ? "show" : "hide"]().html(settings.next);
                              $prev[(loop || index) ? "show" : "hide"]().html(settings.previous);
                              
                              prev = index ? $related[index - 1] : $related[total - 1];
                              next = index < total - 1 ? $related[index + 1] : $related[0];
                              
                              if (settings.slideshow) {
                                    $slideshow.show();
                                    if (index === total - 1 && !loop && $box.is('.' + prefix + 'Slideshow_on')) {
                                          $slideshow.click();
                                    }
                              }
                              
                              // Preloads images within a rel group
                              if (settings.preloading) {
                                    nextSrc = $(next).data(colorbox).href || next.href;
                                    prevSrc = $(prev).data(colorbox).href || prev.href;
                                    
                                    if (isImage(nextSrc)) {
                                          $('<img/>')[0].src = nextSrc;
                                    }
                                    
                                    if (isImage(prevSrc)) {
                                          $('<img/>')[0].src = prevSrc;
                                    }
                              }
                        }
                        
                        $loadingOverlay.hide();
                        
                        if (settings.transition === 'fade') {
                              $box.fadeTo(speed, 1, function () {
                                    defilter();
                              });
                        } else {
                              defilter();
                        }
                        
                        $window.bind('resize.' + prefix, function () {
                              publicMethod.position(0);
                        });
                        
                        $.event.trigger(event_complete);
                        if (settings.onComplete) {
                              settings.onComplete.call(element);
                        }
                  });
            }
            
            if (settings.transition === 'fade') {
                  $box.fadeTo(speed, 0, function () {
                        setPosition(0);
                  });
            } else {
                  setPosition(speed);
            }
      };

      publicMethod.load = function () {
            var href, img, setResize, prep = publicMethod.prep;
            
            active = true;
            
            element = $related[index];
            
            settings = $.extend({}, $(element).data(colorbox));
            
            //convert functions to static values
            process();
            
            $.event.trigger(event_load);
            if (settings.onLoad) {
                  settings.onLoad.call(element);
            }
            
            settings.h = settings.height ?
                        setSize(settings.height, 'y') - loadedHeight - interfaceHeight :
                        settings.innerHeight && setSize(settings.innerHeight, 'y');
            
            settings.w = settings.width ?
                        setSize(settings.width, 'x') - loadedWidth - interfaceWidth :
                        settings.innerWidth && setSize(settings.innerWidth, 'x');
            
            // Sets the minimum dimensions for use in image scaling
            settings.mw = settings.w;
            settings.mh = settings.h;
            
            // Re-evaluate the minimum width and height based on maxWidth and maxHeight values.
            // If the width or height exceed the maxWidth or maxHeight, use the maximum values instead.
            if (settings.maxWidth) {
                  settings.mw = setSize(settings.maxWidth, 'x') - loadedWidth - interfaceWidth;
                  settings.mw = settings.w && settings.w < settings.mw ? settings.w : settings.mw;
            }
            if (settings.maxHeight) {
                  settings.mh = setSize(settings.maxHeight, 'y') - loadedHeight - interfaceHeight;
                  settings.mh = settings.h && settings.h < settings.mh ? settings.h : settings.mh;
            }
            
            href = settings.href;
            
            $loadingOverlay.show();
            
            if (settings.inline) {
                  // Inserts an empty placeholder where inline content is being pulled from.
                  // An event is bound to put inline content back when ColorBox closes or loads new content.
                  $div('InlineTemp').hide().insertBefore($(href)[0]).bind(event_load + ' ' + event_cleanup, function () {
                        $(this).replaceWith($loaded.children());
                  });
                  prep($(href));
            } else if (settings.iframe) {
                  // IFrame element won't be added to the DOM until it is ready to be displayed,
                  // to avoid problems with DOM-ready JS that might be trying to run in that iframe.
                  prep(" ");
            } else if (settings.html) {
                  prep(settings.html);
            } else if (isImage(href)) {
                  img = new Image();
                  img.onload = function () {
                        var percent;
                        
                        img.onload = null;
                        img.id = prefix + 'Photo';
                        $(img).css({margin: 'auto', border: 'none', display: 'block', cssFloat: 'left'});
                        
                        if (settings.scalePhotos) {
                              setResize = function () {
                                    img.height -= img.height * percent;
                                    img.width -= img.width * percent;   
                              };
                              if (settings.mw && img.width > settings.mw) {
                                    percent = (img.width - settings.mw) / img.width;
                                    setResize();
                              }
                              if (settings.mh && img.height > settings.mh) {
                                    percent = (img.height - settings.mh) / img.height;
                                    setResize();
                              }
                        }
                        
                        if (settings.h) {
                              img.style.marginTop = Math.max(settings.h - img.height, 0) / 2 + 'px';
                        }
                        
                        setTimeout(function () { // Chrome will sometimes report a 0 by 0 size if there isn't pause in execution
                              prep(img);
                        }, 1);
                        
                        if ($related[1] && (index < $related.length - 1 || settings.loop)) {
                              $(img).css({cursor: 'pointer'}).click(publicMethod.next);
                        }
                        
                        if (isIE) {
                              img.style.msInterpolationMode = 'bicubic';
                        }
                  };
                  img.src = href;
            } else {
                  $div().appendTo($loadingBay).load(href, function (data, status, xhr) {
                        prep(status === 'error' ? 'Request unsuccessful: ' + xhr.statusText : this);
                  });
            }
      };

      // Navigates to the next page/image in a set.
      publicMethod.next = function () {
            if (!active) {
                  index = index < $related.length - 1 ? index + 1 : 0;
                  publicMethod.load();
            }
      };
      
      publicMethod.prev = function () {
            if (!active) {
                  index = index ? index - 1 : $related.length - 1;
                  publicMethod.load();
            }
      };

      publicMethod.slideshow = function () {
            var stop, timeOut, className = prefix + 'Slideshow_';
            
            $slideshow.bind(event_closed, function () {
                  $slideshow.unbind();
                  clearTimeout(timeOut);
                  $box.removeClass(className + "off " + className + "on");
            });
            
            function start() {
                  $slideshow
                  .text(settings.slideshowStop)
                  .bind(event_complete, function () {
                        timeOut = setTimeout(publicMethod.next, settings.slideshowSpeed);
                  })
                  .bind(event_load, function () {
                        clearTimeout(timeOut);  
                  }).one("click", function () {
                        stop();
                  });
                  $box.removeClass(className + "off").addClass(className + "on");
            }
            
            stop = function () {
                  clearTimeout(timeOut);
                  $slideshow
                  .text(settings.slideshowStart)
                  .unbind(event_complete + ' ' + event_load)
                  .one("click", function () {
                        start();
                        timeOut = setTimeout(publicMethod.next, settings.slideshowSpeed);
                  });
                  $box.removeClass(className + "on").addClass(className + "off");
            };
            
            if (settings.slideshow && $related[1]) {
                  if (settings.slideshowAuto) {
                        start();
                  } else {
                        stop();
                  }
            }
      };

      // Note: to use this within an iframe use the following format: parent.$.fn.colorbox.close();
      publicMethod.close = function () {
            if (open) {
                  open = false;
                  
                  $.event.trigger(event_cleanup);
                  
                  if (settings.onCleanup) {
                        settings.onCleanup.call(element);
                  }
                  
                  $window.unbind('.' + prefix + ' .' + event_ie6);
                  
                  $overlay.fadeTo('fast', 0);
                  
                  $box.stop().fadeTo('fast', 0, function () {
                        $box.find('iframe').attr('src', 'about:blank'); // change the location of the iframe to avoid a problem in IE with flash objects not clearing.
                        
                        $loaded.remove();
                        
                        $box.add($overlay).css({'opacity': 1, cursor: 'auto'}).hide();
                        
                        try {
                              bookmark.focus();
                        } catch (e) {
                              // do nothing
                        }
                        
                        setTimeout(function () {
                              $.event.trigger(event_closed);
                              if (settings.onClosed) {
                                    settings.onClosed.call(element);
                              }
                        }, 1);
                  });
            }
      };

      // A method for fetching the current element ColorBox is referencing.
      // returns a jQuery object.
      publicMethod.element = function () {
            return $(element);
      };

      publicMethod.settings = defaults;

      // Initializes ColorBox when the DOM has loaded
      $(publicMethod.init);

}(jQuery, this));