(function($) {
    $.fn.lightBox = function(settings) {
        settings = jQuery.extend({
            overlayBgColor:         '#222',
            overlayOpacity:         0.7,
            fixedNavigation:        false,
            imageLoading:           'pictures/lightbox-ico-loading.gif',
            imageBtnPrev:           'pictures/prev.gif',
            imageBtnNext:           'pictures/next.gif',
            imageBtnClose:          'pictures/closelabel.gif',
            imageBlank:             'pictures/lightbox-blank.gif',
            containerBorderSize:    10,
            containerResizeSpeed:   400,
            txtImage:               'Imagen',
            txtOf:                  'de',
            txtCopy:                '• © Alarco Maquetas',
            keyToClose:             'c',
            keyToPrev:              'p',
            keyToNext:              'n',
            imageArray:             [],
            activeImage:            0
        },settings);
        var jQueryMatchedObj = this;
        function _initialize() {
            _start(this,jQueryMatchedObj);
            return false;
        }
        function _start(objClicked,jQueryMatchedObj) {
            $('embed, object, select').css({ 'visibility' : 'hidden' });
            _set_interface();
            settings.imageArray.length = 0;
            settings.activeImage = 0;
            if ( jQueryMatchedObj.length == 1 ) {
                settings.imageArray.push(new Array(objClicked.getAttribute('href'),objClicked.getAttribute('title')));
            } else {
                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++;
            }
            _set_image_to_view();
        }
        function _set_interface() {
            $('body').append('<div id="jquery-overlay"></div><div id="jquery-lightbox"><div id="lightbox-container-image-box"><div id="lightbox-container-image"><img id="lightbox-image"><div style="" id="lightbox-nav"><a href="#" id="lightbox-nav-btnPrev"></a><a href="#" id="lightbox-nav-btnNext"></a></div><div id="lightbox-loading"><a href="#" id="lightbox-loading-link"><img src="' + settings.imageLoading + '"></a></div></div></div><div id="lightbox-container-image-data-box"><div id="lightbox-container-image-data"><div id="lightbox-image-details"><span id="lightbox-image-details-caption"></span><span id="lightbox-image-details-currentNumber"></span></div><div id="lightbox-secNav"><a href="#" id="lightbox-secNav-btnClose"><img src="' + settings.imageBtnClose + '"></a></div></div></div></div>');   
            var arrPageSizes = ___getPageSize();
            $('#jquery-overlay').css({
                backgroundColor:    settings.overlayBgColor,
                opacity:            settings.overlayOpacity,
                width:              arrPageSizes[0],
                height:             arrPageSizes[1]
            }).fadeIn();
            var arrPageScroll = ___getPageScroll();
            $('#jquery-lightbox').css({
                top:    arrPageScroll[1] + (arrPageSizes[3] / 10),
                left:   arrPageScroll[0]
            }).show();
            $('#jquery-overlay,#jquery-lightbox').click(function() {
                _finish();
            });
            $('#lightbox-loading-link,#lightbox-secNav-btnClose').click(function() {
                _finish();
                return false;
            });
            $(window).resize(function() {
                var arrPageSizes = ___getPageSize();
                $('#jquery-overlay').css({
                    width:      arrPageSizes[0],
                    height:     arrPageSizes[1]
                });
                var arrPageScroll = ___getPageScroll();
                $('#jquery-lightbox').css({
                    top:    arrPageScroll[1] + (arrPageSizes[3] / 10),
                    left:   arrPageScroll[0]
                });
            });
        }
        function _set_image_to_view() {
            $('#lightbox-loading').show();
            if ( settings.fixedNavigation ) {
                $('#lightbox-image,#lightbox-container-image-data-box,#lightbox-image-details-currentNumber').hide();
            } else {
                $('#lightbox-image,#lightbox-nav,#lightbox-nav-btnPrev,#lightbox-nav-btnNext,#lightbox-container-image-data-box,#lightbox-image-details-currentNumber').hide();
            }
            var objImagePreloader = new Image();
            objImagePreloader.onload = function() {
                $('#lightbox-image').attr('src',settings.imageArray[settings.activeImage][0]);
                _resize_container_image_box(objImagePreloader.width,objImagePreloader.height);
                objImagePreloader.onload=function(){};
            };
            objImagePreloader.src = settings.imageArray[settings.activeImage][0];
        };
        function _resize_container_image_box(intImageWidth,intImageHeight) {
            var intCurrentWidth = $('#lightbox-container-image-box').width();
            var intCurrentHeight = $('#lightbox-container-image-box').height();
            var intWidth = (intImageWidth + (settings.containerBorderSize * 2));
            var intHeight = (intImageHeight + (settings.containerBorderSize * 2));
            var intDiffW = intCurrentWidth - intWidth;
            var intDiffH = intCurrentHeight - intHeight;
            $('#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 });
            $('#lightbox-nav-btnPrev,#lightbox-nav-btnNext').css({ height: intImageHeight + (settings.containerBorderSize * 2) });
        };
        function _show_image() {
            $('#lightbox-loading').hide();
            $('#lightbox-image').fadeIn(function() {
                _show_image_data();
                _set_navigation();
            });
            _preload_neighbor_images();
        };
        function _show_image_data() {
            $('#lightbox-container-image-data-box').slideDown('fast');
            $('#lightbox-image-details-caption').hide();
            if ( settings.imageArray[settings.activeImage][1] ) {
                $('#lightbox-image-details-caption').html(settings.imageArray[settings.activeImage][1]).show();
            }
            if ( settings.imageArray.length > 1 ) {
            $('#lightbox-image-details-currentNumber').html(settings.txtImage + ' ' + ( settings.activeImage + 1 ) + ' ' + settings.txtOf + ' ' + settings.imageArray.length + ' ' + settings.txtCopy).show();
            }       
        }
        function _set_navigation() {
            $('#lightbox-nav').show();
            $('#lightbox-nav-btnPrev,#lightbox-nav-btnNext').css({ 'background' : 'transparent url(' + settings.imageBlank + ') no-repeat' });
            
            if ( settings.activeImage != 0 ) {
                if ( settings.fixedNavigation ) {
                    $('#lightbox-nav-btnPrev').css({ 'background' : 'url(' + settings.imageBtnPrev + ') left 15% no-repeat' })
                        .unbind()
                        .bind('click',function() {
                            settings.activeImage = settings.activeImage - 1;
                            _set_image_to_view();
                            return false;
                        });
                } else {
                    $('#lightbox-nav-btnPrev').unbind().hover(function() {
                        $(this).css({ 'background' : 'url(' + settings.imageBtnPrev + ') left 15% no-repeat' });
                    },function() {
                        $(this).css({ 'background' : 'transparent url(' + settings.imageBlank + ') no-repeat' });
                    }).show().bind('click',function() {
                        settings.activeImage = settings.activeImage - 1;
                        _set_image_to_view();
                        return false;
                    });
                }
            }
            
            if ( settings.activeImage != ( settings.imageArray.length -1 ) ) {
                if ( settings.fixedNavigation ) {
                    $('#lightbox-nav-btnNext').css({ 'background' : 'url(' + settings.imageBtnNext + ') right 15% no-repeat' })
                        .unbind()
                        .bind('click',function() {
                            settings.activeImage = settings.activeImage + 1;
                            _set_image_to_view();
                            return false;
                        });
                } else {
                    $('#lightbox-nav-btnNext').unbind().hover(function() {
                        $(this).css({ 'background' : 'url(' + settings.imageBtnNext + ') right 15% no-repeat' });
                    },function() {
                        $(this).css({ 'background' : 'transparent url(' + settings.imageBlank + ') no-repeat' });
                    }).show().bind('click',function() {
                        settings.activeImage = settings.activeImage + 1;
                        _set_image_to_view();
                        return false;
                    });
                }
            }
            _enable_keyboard_navigation();
        }
        function _enable_keyboard_navigation() {
            $(document).keydown(function(objEvent) {
                _keyboard_action(objEvent);
            });
        }
        function _disable_keyboard_navigation() {
            $(document).unbind();
        }
        function _keyboard_action(objEvent) {
            if ( objEvent == null ) {
                keycode = event.keyCode;
                escapeKey = 27;
            } else {
                keycode = objEvent.keyCode;
                escapeKey = objEvent.DOM_VK_ESCAPE;
            }
            key = String.fromCharCode(keycode).toLowerCase();
            if ( ( key == settings.keyToClose ) || ( key == 'x' ) || ( keycode == escapeKey ) ) {
                _finish();
            }
            if ( ( key == settings.keyToPrev ) || ( keycode == 37 ) ) {
                if ( settings.activeImage != 0 ) {
                    settings.activeImage = settings.activeImage - 1;
                    _set_image_to_view();
                    _disable_keyboard_navigation();
                }
            }
            if ( ( key == settings.keyToNext ) || ( keycode == 39 ) ) {
                if ( settings.activeImage != ( settings.imageArray.length - 1 ) ) {
                    settings.activeImage = settings.activeImage + 1;
                    _set_image_to_view();
                    _disable_keyboard_navigation();
                }
            }
        }
        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];
            }
        }
        function _finish() {
            $('#jquery-lightbox').remove();
            $('#jquery-overlay').fadeOut(function() { $('#jquery-overlay').remove(); });
            $('embed, object, select').css({ 'visibility' : 'visible' });
        }
        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){
                xScroll = document.body.scrollWidth;
                yScroll = document.body.scrollHeight;
            } else {
                xScroll = document.body.offsetWidth;
                yScroll = document.body.offsetHeight;
            }
            var windowWidth, windowHeight;
            if (self.innerHeight) {
                if(document.documentElement.clientWidth){
                    windowWidth = document.documentElement.clientWidth; 
                } else {
                    windowWidth = self.innerWidth;
                }
                windowHeight = self.innerHeight;
            } else if (document.documentElement && document.documentElement.clientHeight) {
                windowWidth = document.documentElement.clientWidth;
                windowHeight = document.documentElement.clientHeight;
            } else if (document.body) {
                windowWidth = document.body.clientWidth;
                windowHeight = document.body.clientHeight;
            }   
            if(yScroll < windowHeight){
                pageHeight = windowHeight;
            } else { 
                pageHeight = yScroll;
            }
            if(xScroll < windowWidth){  
                pageWidth = xScroll;        
            } else {
                pageWidth = windowWidth;
            }
            arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight);
            return arrayPageSize;
        };
        function ___getPageScroll() {
            var xScroll, yScroll;
            if (self.pageYOffset) {
                yScroll = self.pageYOffset;
                xScroll = self.pageXOffset;
            } else if (document.documentElement && document.documentElement.scrollTop) {
                yScroll = document.documentElement.scrollTop;
                xScroll = document.documentElement.scrollLeft;
            } else if (document.body) {
                yScroll = document.body.scrollTop;
                xScroll = document.body.scrollLeft; 
            }
            arrayPageScroll = new Array(xScroll,yScroll);
            return arrayPageScroll;
        };
         function ___pause(ms) {
            var date = new Date(); 
            curDate = null;
            do { var curDate = new Date(); }
            while ( curDate - date < ms);
         };
        return this.unbind('click').click(_initialize);
    };
})(jQuery);