/**
 * jQuery lightBox plugin
 * This jQuery plugin was inspired and based on Lightbox 2 by Lokesh Dhakar (http://www.huddletogether.com/projects/lightbox2/)
 * and adapted to me for use like a plugin from jQuery.
 * @name jquery-lightbox-0.5.js
 * @author Leandro Vieira Pinho - http://leandrovieira.com
 * @version 0.5
 * @date April 11, 2008
 * @category jQuery plugin
 * @copyright (c) 2008 Leandro Vieira Pinho (leandrovieira.com)
 * @license CC Attribution-No Derivative Works 2.5 Brazil - http://creativecommons.org/licenses/by-nd/2.5/br/deed.en_US
 * @example Visit http://leandrovieira.com/projects/jquery/lightbox/ for more informations about this jQuery plugin
 */
// Offering a Custom Alias suport - More info: http://docs.jquery.com/Plugins/Authoring#Custom_Alias
(function($) {
    /**
	 * $ is an alias to jQuery object
	 *
	 */
    $.fn.lightBox = function(settings) {
        // Settings to configure the jQuery lightBox plugin how you like
        settings = jQuery.extend({
            // Configuration related to overlay
            overlayBgColor: '#000', 	// (string) Background color to overlay; inform a hexadecimal value like: #RRGGBB. Where RR, GG, and BB are the hexadecimal values for the red, green, and blue values of the color.
            overlayOpacity: 0.65, 	// (integer) Opacity value to overlay; inform: 0.X. Where X are number from 0 to 9
            // Configuration related to navigation
            fixedNavigation: true, 	// (boolean) Boolean that informs if the navigation (next and prev button) will be fixed or not in the interface.
            // Configuration related to images
            imageLoading: '', //'images/lightbox/lightbox-ico-loading.gif',		// (string) Path and the name of the loading icon
            imageBtnPrev: '', ///images/lightbox/lightbox-btn-prev.gif', 		// (string) Path and the name of the prev button image
            imageBtnNext: '', ///images/lightbox/lightbox-btn-next.gif', 		// (string) Path and the name of the next button image
            imageBtnClose: 'images/lightbox/lightbox-btn-close.gif', 	// (string) Path and the name of the close btn
            imageBlank: 'images/lightbox/lightbox-blank.gif', 		// (string) Path and the name of a blank image (one pixel)
            // Configuration related to container image box
            containerBorderSize: 10, 		// (integer) If you adjust the padding in the CSS for the container, #lightbox-container-image-box, you will need to update this value
            containerResizeSpeed: 400, 	// (integer) Specify the resize duration of container image. These number are miliseconds. 400 is default.
            // Configuration related to texts in caption. For example: Image 2 of 8. You can alter either "Image" and "of" texts.
            txtImage: 'Image', // (string) Specify text "Image"
            txtOf: 'of', 	// (string) Specify text "of"
            // Configuration related to keyboard navigation
            keyToClose: 'c', 	// (string) (c = close) Letter to close the jQuery lightBox interface. Beyond this letter, the letter X and the SCAPE key is used to.
            keyToPrev: 'p', 	// (string) (p = previous) Letter to show the previous image
            keyToNext: 'n', 	// (string) (n = next) Letter to show the next image.
            // Donīt alter these variables in any way
            imageArray: [],
            activeImage: 0
        }, settings);
        // Caching the jQuery object with all elements matched
        var jQueryMatchedObj = this; // This, in this context, refer to jQuery object
        /**
		 * Initializing the plugin calling the start function
		 *
		 * @return boolean false
		 */
        function _initialize() {
            var linkSRC = this;
            var targetUrl = (settings.type == null || settings.type == '') ? $(linkSRC).attr('href') : settings.type;

            $.ajax({
                type: 'GET',
                url: targetUrl,
                data: { 'ajax': '1' },

                success: function(html) {
                $('body').append(html);
                    $().initTabs();
                    _start(linkSRC, jQueryMatchedObj);
                    $("#mainnav")[0].hidePopups();
                }
            });
            return false; // Avoid the browser following the link
        }
        /**
		 * Start the jQuery lightBox plugin
		 *
		 * @param object objClicked The object (link) whick the user have clicked
		 * @param object jQueryMatchedObj The jQuery object with all elements matched
		 */
        function _start(objClicked, jQueryMatchedObj) {
            // Hide some elements to avoid conflict with overlay in IE. These elements appear above the overlay.
            $('select').css({ 'visibility': 'hidden' });
            //set all descendants of the lightbox to be visible so that any embedded video or dropdowns, etc. will work.
            $('embed, object, select', $('#jquery-lightbox')).css({ 'visibility': 'visible' });
            // Call the function to create the markup structure; style some elements; assign events in some elements.
            _set_interface();
            // Unset total images in imageArray
            settings.imageArray.length = 0;
            // Unset image active information
            settings.activeImage = 0;
            // We have an image set? Or just an image? Letīs see it.
            if (jQueryMatchedObj.length == 1) {
                settings.imageArray.push(new Array(objClicked.getAttribute('href'), objClicked.getAttribute('title')));
            } else {
                // Add an Array (as many as we have), with href and title atributes, inside the Array that storage the images references		
                for (var i = 0; i < jQueryMatchedObj.length; i++) {
                    settings.imageArray.push(new Array(jQueryMatchedObj[i].getAttribute('href'), jQueryMatchedObj[i].getAttribute('title')));
                }
            }
            while (settings.imageArray[settings.activeImage][0] != objClicked.getAttribute('href')) {
                settings.activeImage++;
            }
            // Call the function that prepares image exibition
            _set_image_to_view();
        }
        /**
		 * Create the jQuery lightBox plugin interface
		 */
        function _set_interface() {
            $('#overlay').size = function() { ___getPageSize(); }
            // Get page sizes
            var arrPageSizes = ___getPageSize();
            // Style overlay and show it
            $('#jquery-overlay').css({
                backgroundColor: settings.overlayBgColor,
                opacity: settings.overlayOpacity,
                width: Math.max(arrPageSizes[0], $("body").outerWidth(), arrPageSizes[2]),
                height: Math.max(arrPageSizes[1], $("body").outerHeight(), arrPageSizes[3])
            }).hide().fadeIn();
            // Get page scroll
            var arrPageScroll = ___getPageScroll();

            // Calculate top and left offset for the jquery-lightbox div object and show it
            // if the item is larger than the page, reposition it higher on the page
            var lightboxContent = $('#jquery-lightbox');
            lightboxContent.css(
                function() {
                    var lightboxHeight = lightboxContent.height();
                    if($('#lightbox-image', lightboxContent).length > 0){
                        lightboxHeight = 700;
                    }
                    if (arrPageSizes[3] < lightboxHeight) 
                    {
                        return {    top: Math.max(0, arrPageScroll[1] + (arrPageSizes[3] - lightboxHeight)),
                                    left: arrPageScroll[0] }; 
                    } 
                    else 
                    {
                        return {    top: arrPageScroll[1] + (arrPageSizes[3] / 10),
                                    left: arrPageScroll[0] };
                   }
                }()
            ).show();

            // Assigning click events in elements to close overlay
            $('#jquery-overlay,#jquery-lightbox').click(function() {
                var getcontainer = document.getElementById('lightbox-container');
                if (getcontainer!=null)
                {
                    getcontainer.innerText = "";
                }
                _finish();
            });
            // Assigning click event to prevent lightbox from closing when click
            // is not on the close button or the overlay
            $('#lightbox-rc,#language-rc').click(function() {
                return false;
            });
            // Assigning a click event to make internal links still function.
            $('#lightbox-rc a,#language-rc a').unbind('click').click(function() {
                if ($(this).attr('href') != '' && $(this).attr('href') != '#') {

                    $('#lightbox-rc,#language-rc,#jquery-overlay,#jquery-lightbox').unbind('click');
                    setTimeout(function() { $('#jquery-overlay,#jquery-lightbox').click(function() { _finish(); }); }, 1000);
                }
            });
            // Assign the _finish function to lightbox-loading-link and lightbox-secNav-btnClose objects
            $('#lightbox-loading-link,#lightbox-secNav-btnClose').unbind("click").click(function() {
                _finish();
                return false;
            });
            // If window was resized, calculate the new overlay dimensions
            $(window).resize(function() {
                // Get page sizes
                var arrPageSizes = ___getPageSize();
                // Style overlay and show it
                $('#jquery-overlay').css({ width: Math.max(arrPageSizes[0], $("body").outerWidth(), arrPageSizes[2]),
                    height: Math.max(arrPageSizes[1], $("body").outerHeight(), arrPageSizes[3])
                });

                // Get page scroll
                var arrPageScroll = ___getPageScroll();
                // Calculate top and left offset for the jquery-lightbox div object and show it
                var lightboxContent = $('#jquery-lightbox');
                lightboxContent.css(
                    function() {
                        var lightboxHeight = lightboxContent.height();
                        if($('#lightbox-image', lightboxContent).length > 0){
                            lightboxHeight = 700;
                        }
                        if (arrPageSizes[3] < lightboxHeight) 
                        {
                            return {    top: Math.max(0, arrPageScroll[1] + (arrPageSizes[3] - lightboxHeight)),
                                        left: arrPageScroll[0] }; 
                        } 
                        else {
                            return { top: arrPageScroll[1] + (arrPageSizes[3] / 10),
                                left: arrPageScroll[0]
                            };
                        }
                    }()
                );
            });
        }
        /**
		 * Prepares image exibition; doing a imageīs preloader to calculate itīs size
		 *
		 */
        function _set_image_to_view() { // show the loading
            // Show the loading                        
            $('#lightbox-loading').show();
            if (settings.fixedNavigation) {
                $('#lightbox-image,#lightbox-container-image-data-box,#lightbox-image-details-currentNumber').hide();
            } else {
                // Hide some elements
                $('#lightbox-image,#lightbox-nav,#lightbox-nav-btnPrev,#lightbox-nav-btnNext,#lightbox-container-image-data-box,#lightbox-image-details-currentNumber').hide();
            }
            if ($('#lightbox-image').size() > 0) {
                // Image preload process
                var objImagePreloader = new Image();
                objImagePreloader.onload = function() {
                    // Perfomance an effect in the image container resizing it
                    _resize_container_image_box(objImagePreloader.width, objImagePreloader.height);
                    //	clear onLoad, IE behaves irratically with animated gifs otherwise
                    objImagePreloader.onload = function() { };
                };
                objImagePreloader.src = $('#lightbox-image').attr('src'); //settings.imageArray[settings.activeImage][0];            
            }
            if ($('#lightbox-container-video').size() > 0) {

                var videoWidth = $('#lightbox-container-video').css('width');
                var videoHeight = $('#lightbox-container-video').css('height');
                videoWidth = videoWidth.substring(0, videoWidth.length - 2) * 1;
                videoHeight = videoHeight.substring(0, videoHeight.length - 2) * 1;

                _resize_container_image_box(videoWidth, videoHeight);
            }
        };
        /**
		 * Perfomance an effect in the image container resizing it
		 *
		 * @param integer intImageWidth The imageīs width that will be showed
		 * @param integer intImageHeight The imageīs height that will be showed
		 */
        function _resize_container_image_box(intImageWidth, intImageHeight) {
            // Get current width and height
            var intCurrentWidth = $('#lightbox-container-image-box').width();
            var intCurrentHeight = $('#lightbox-container-image-box').height();

            // Get the width and height of the selected image plus the padding
            var intWidth = (intImageWidth + (settings.containerBorderSize * 2)); // Plus the imageīs width and the left and right padding value
            var intHeight = (intImageHeight + (settings.containerBorderSize * 2)); // Plus the imageīs height and the left and right padding value
            // Differences
            var intDiffW = intCurrentWidth - intWidth;
            var intDiffH = intCurrentHeight - intHeight;
            
            // Perfomance the effect			
            $('#lightbox-rc').width(intWidth + 24);
            $('#lightbox-hidden').css({ display: 'block' });
            $('#lightbox-container-image-box').animate({ width: intWidth, height: intHeight }, settings.containerResizeSpeed, function() { _show_image(); });
            if ((intDiffW == 0) && (intDiffH == 0)) {
                if ($.browser.msie) {
                    ___pause(250);
                } else {
                    ___pause(100);
                }
            }
            $('#lightbox-container-image-data-box').css({ width: intImageWidth });
        };
        /**
		 * Show the prepared image
		 *
		 */
        function _show_image() {
            $('#lightbox-loading').hide();
            $('#lightbox-image').fadeIn(100);
            _show_image_data();

            //_preload_neighbor_images();
        };
        /**
		 * Show the image information
		 *
		 */
        function _show_image_data() {
            $('#lightbox-container-image-data-box').slideDown('fast', function(){                      
                    // If we have a image set, display 'Image X of X'
                    if (settings.imageArray.length > 1) {
                        $('#lightbox-image-details-currentNumber').html(settings.txtImage + ' ' + (settings.activeImage + 1) + ' ' + settings.txtOf + ' ' + settings.imageArray.length).show();
                    }
                    _set_navigation(); 
                });
        }
        /**
		 * Display the button navigations
		 *
		 */
        function _set_navigation() {
            $('#lightbox-nav').show();
            // Instead to define this configuration in CSS file, we define here. And itīs need to IE. Just.
            //$('#lightbox-nav-btnPrev,#lightbox-nav-btnNext').css({ 'background' : 'transparent url(' + settings.imageBlank + ') no-repeat' });
            // Show the prev button, if not the first image in set
            if (settings.activeImage != 0) {
                $('#previous-button').removeClass('LeftDisabled');
                $('#previous-button').addClass('LeftArrow');
                if (settings.fixedNavigation) {
                    $('#lightbox-nav-btnPrev').css({ 'background': 'url(' + settings.imageBtnPrev + ') left top no-repeat' }).unbind().bind('click', function() {
                        settings.activeImage = settings.activeImage - 1;
                        _getPageData();
                        //_set_image_to_view();
                        return false;
                    });
                    $('#lightbox-nav-btnPrev').mouseover(function() {
                        $('#lightbox-nav-btnPrev').css({ 'background-position': 'left -52px' });
                    }).mouseout(function() {
                        $('#lightbox-nav-btnPrev').css({ 'background-position': 'left 0' });
                    });
                } else {
                    // Show the images button for Next buttons
                    $('#lightbox-nav-btnPrev').unbind().hover(function() {
                        //$(this).css({ 'background' : 'url(' + settings.imageBtnPrev + ') left -26px no-repeat' });
                    }, function() {
                        //$(this).css({ 'background' : 'transparent url(' + settings.imageBlank + ') no-repeat' });
                        //$(this).css({ 'background' : 'url(' + settings.imageBtnNext + ') left -26px no-repeat' });
                    }).show().bind('click', function() {
                        settings.activeImage = settings.activeImage - 1;
                        _getPageData();
                        //_set_image_to_view();
                        return false;
                    });
                }
            }
            else {
                $('#previous-button').removeClass('LeftArrow');
                $('#previous-button').addClass('LeftDisabled');
                $('#lightbox-nav-btnPrev').css({ 'background': 'url(' + settings.imageBtnPrev + ') left -26px no-repeat' }).unbind('click').bind('click', function() { return false; });
            }
            // Show the next button, if not the last image in set
            if (settings.activeImage != (settings.imageArray.length - 1)) {
                $('#next-button').removeClass('RightDisabled');
                $('#next-button').addClass('RightArrow');
                if (settings.fixedNavigation) {
                    $('#lightbox-nav-btnNext').css({ 'background': 'url(' + settings.imageBtnNext + ') right 0 no-repeat' }).unbind().bind('click', function(e) {
                        settings.activeImage = settings.activeImage + 1;
                        _getPageData();
                        //_set_image_to_view();                        
                        return false;
                    });
                    $('#lightbox-nav-btnNext').mouseover(function() {
                        $('#lightbox-nav-btnNext').css({ 'background-position': 'left -52px' });
                    }).mouseout(function() {
                        $('#lightbox-nav-btnNext').css({ 'background-position': 'left 0' });
                    });
                } else {
                    // Show the images button for Next buttons
                    $('#lightbox-nav-btnNext').unbind().hover(function() {
                        //$(this).css({ 'background' : 'url(' + settings.imageBtnNext + ') right 0 no-repeat' });
                    }, function() {
                        //$(this).css({ 'background' : 'transparent url(' + settings.imageBlank + ') no-repeat' });
                    }).show().unbind('click').bind('click', function() {
                        settings.activeImage = settings.activeImage + 1;
                        _getPageData();
                        return false;
                    });
                }
            }
            else {
                $('#next-button').removeClass('RightArrow');
                $('#next-button').addClass('RightDisabled');
                $('#lightbox-nav-btnNext').css({ 'background': 'url(' + settings.imageBtnNext + ') left -26px no-repeat' }).unbind('click').bind('click', function() { return false; });
            }
            $('#lightbox-footer-nav').css({ display: 'block' });
            var prevButton = $('#previous-button');
            var nextButton = $('#next-button');
            $('.rc_bottom', prevButton).css({ width: prevButton.outerWidth() });
            $('.rc_bottom', nextButton).css({ width: nextButton.outerWidth() });
            // Enable keyboard navigation
            _enable_keyboard_navigation();
        }

        function _getPageData() {
            $.ajax({
                type: 'GET',
                url: settings.imageArray[settings.activeImage][0],
                data: { 'ajax': '1' },

                success: function(html) {
                    //alert(html);
                    //alert($("#lightbox-rc", html).html());
                    $("#lightbox-rc").html($("#lightbox-rc", html).html());
                    _set_interface()
                    _set_image_to_view();
                }
            });
        }
        /**
		 * Enable a support to keyboard navigation
		 *
		 */
        function _enable_keyboard_navigation() {
            $(document).keydown(function(objEvent) {
                _keyboard_action(objEvent);
            });
        }
        /**
		 * Disable the support to keyboard navigation
		 *
		 */
        function _disable_keyboard_navigation() {
            $(document).unbind();
        }
        /**
		 * Perform the keyboard actions
		 *
		 */
        function _keyboard_action(objEvent) {
            // To ie
            if (objEvent == null) {
                keycode = event.keyCode;
                escapeKey = 27;
                // To Mozilla
            } else {
                keycode = objEvent.keyCode;
                escapeKey = objEvent.DOM_VK_ESCAPE;
            }
            // Get the key in lower case form
            key = String.fromCharCode(keycode).toLowerCase();
            // Verify the keys to close the ligthBox
            if ((key == settings.keyToClose) || (key == 'x') || (keycode == escapeKey)) {
                _finish();
            }
            // Verify the key to show the previous image
            if ((key == settings.keyToPrev) || (keycode == 37)) {
                // If weīre not showing the first image, call the previous
                if (settings.activeImage != 0) {
                    settings.activeImage = settings.activeImage - 1;
                    _set_image_to_view();
                    _disable_keyboard_navigation();
                }
            }
            // Verify the key to show the next image
            if ((key == settings.keyToNext) || (keycode == 39)) {
                // If weīre not showing the last image, call the next
                if (settings.activeImage != (settings.imageArray.length - 1)) {
                    settings.activeImage = settings.activeImage + 1;
                    _set_image_to_view();
                    _disable_keyboard_navigation();
                }
            }
        }
        /**
		 * Preload prev and next images being showed
		 *
		 */
        function _preload_neighbor_images() {
            if ((settings.imageArray.length - 1) > settings.activeImage) {
                objNext = new Image();
                objNext.src = settings.imageArray[settings.activeImage + 1][0];
            }
            if (settings.activeImage > 0) {
                objPrev = new Image();
                objPrev.src = settings.imageArray[settings.activeImage - 1][0];
            }
        }
        /**
		 * Remove jQuery lightBox plugin HTML markup
		 *
		 */
        function _finish() {

            $('#jquery-lightbox').remove();
            //$('#jquery-overlay').fadeOut(function() { $('#jquery-overlay').remove(); });
            $('#jquery-overlay').remove();
            // Show some elements to avoid conflict with overlay in IE. These elements appear above the overlay.
            $('embed, object, select').css({ 'visibility': 'visible' });
        }
        /**
		 / THIRD FUNCTION
		 * getPageSize() by quirksmode.com
		 *
		 * @return Array Return an array with page width, height and window width, height
		 */
        function ___getPageSize() {
            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 then height of the viewport
            if (yScroll < windowHeight) {
                pageHeight = windowHeight;
            } else {
                pageHeight = yScroll;
            }
            // for small pages with total width less then width of the viewport
            if (xScroll < windowWidth) {
                pageWidth = xScroll;
            } else {
                pageWidth = windowWidth;
            }
            arrayPageSize = new Array(pageWidth, pageHeight, windowWidth, windowHeight);
            return arrayPageSize;
        };
        /**
		 / THIRD FUNCTION
		 * getPageScroll() by quirksmode.com
		 *
		 * @return Array Return an array with x,y page scroll values.
		 */
        function ___getPageScroll() {
            var xScroll, yScroll;
            if (self.pageYOffset) {
                yScroll = self.pageYOffset;
                xScroll = self.pageXOffset;
            } else if (document.documentElement && document.documentElement.scrollTop) {	 // 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 = new Array(xScroll, yScroll);
            return arrayPageScroll;
        };
        /**
		  * Stop the code execution from a escified time in milisecond
		  *
		  */
        function ___pause(ms) {
            var date = new Date();
            curDate = null;
            do { var curDate = new Date(); }
            while (curDate - date < ms);
        };
        // Return the jQuery object for chaining. The unbind method is used to avoid click conflict when the plugin is called more than once
        return this.unbind('click').click(_initialize);
    };
})(jQuery);                         // Call and execute the function immediately passing the jQuery object