/**
* 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
*/
(function($)
{
    $.fn.lightBox = function(settings)
    {
        settings = jQuery.extend({
									overlayBgColor: '#000',
									overlayOpacity: 0.8, 
									fixedNavigation: false, 
									imageLoading: WebId + '/images/lightbox-ico-loading.gif', 
									imageBtnPrev: WebId + '/images/lightbox-btn-prev.gif', 
									imageBtnNext: WebId + '/images/lightbox-btn-next.gif', 
									imageBtnClose: WebId + '/images/lightbox-btn-close.gif', 
									imageBlank: WebId + '/images/lightbox-blank.gif', 
									containerBorderSize: 10, 
									containerResizeSpeed: 400, 
									txtImage: 'Bild', 
									txtOf: 'von', 
									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] + 20 }).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).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(); 
			$('#jquery-overlay').remove(); 
			//$('#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);