(function($) {
	var opts;
	$.fn.lightbox = function(options) {
		opts = $.extend( {}, $.fn.lightbox.defaults, options);
		$.fn.lightbox.initialize();
		return this.each(function() {
			$(this).click(function() {
				$(this).lightbox.start(this);
				return false;
			});
		});
	};
	$.fn.lightbox.initialize = function() {
		$('#overlay').remove();
		$('#lightbox').remove();
		opts.inprogress = false;
		var outerImage = '<div id="outerImageContainer"><div id="imageContainer"><img id="lightboxImage"><div id="hoverNav"><a href="javascript://" title="'
				+ opts.strings.prevLinkTitle
				+ '" id="prevLink"></a><a href="javascript://" id="nextLink" title="'
				+ opts.strings.nextLinkTitle
				+ '"></a></div><div id="loading"><a href="javascript://" id="loadingLink"><img src="'
				+ opts.fileLoadingImage + '"></a></div></div></div>';
		var imageData = '<div id="imageDataContainer" class="clearfix"><div id="imageData"><div id="imageDetails"><span id="caption"></span><span id="numberDisplay"></span></div><div id="bottomNav">'
		if (opts.displayHelp)
			imageData += '<span id="helpDisplay">' + opts.strings.help + '</span>';
		imageData += '<a href="javascript://" id="bottomNavClose" title="'
				+ opts.strings.closeTitle + '"><img src="'
				+ opts.fileBottomNavCloseImage + '"></a></div></div></div>';
		var string;
		if (opts.navbarOnTop) {
			string = '<div id="overlay"></div><div id="lightbox">' + imageData
					+ outerImage + '</div>';
			$("body").append(string);
			$("#imageDataContainer").addClass('ontop');
		} else {
			string = '<div id="overlay"></div><div id="lightbox">' + outerImage
					+ imageData + '</div>';
			$("body").append(string);
		}
		$("#overlay").click(function() {
			$.fn.lightbox.end();
		}).hide();
		$("#lightbox").click(function() {
			$.fn.lightbox.end();
		}).hide();
		$("#loadingLink").click(function() {
			$.fn.lightbox.end();
			return false;
		});
		$("#bottomNavClose").click(function() {
			$.fn.lightbox.end();
			return false;
		});
		$('#outerImageContainer').width(opts.widthCurrent).height(
				opts.heightCurrent);
		$('#imageDataContainer').width(opts.widthCurrent);
	};
	$.fn.lightbox.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) {
			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;
		}
		var arrayPageSize = new Array(pageWidth, pageHeight, windowWidth,
				windowHeight);
		return arrayPageSize;
	};
	$.fn.lightbox.getPageScroll = function() {
		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;
		}
		var arrayPageScroll = new Array(xScroll, yScroll);
		return arrayPageScroll;
	};
	$.fn.lightbox.pause = function(ms) {
		var date = new Date();
		var curDate = null;
		do {
			curDate = new Date();
		} while (curDate - date < ms);
	};
	$.fn.lightbox.start = function(imageLink) {
		$("select, embed, object").hide();
		var arrayPageSize = $.fn.lightbox.getPageSize();
		$("#overlay").hide().css( {
			width : '100%',
			height : arrayPageSize[1] + 'px',
			opacity : opts.overlayOpacity,
			backgroundColor : opts.overlayBgColor
		}).fadeIn();
		opts.imageArray = [];
		imageNum = 0;
		var anchors = document.getElementsByTagName(imageLink.tagName);
		if (!imageLink.rel || (imageLink.rel == '')) {
			opts.imageArray.push(new Array(imageLink.href,
					opts.displayTitle ? imageLink.title : ''));
		} else {
			$("a").each(
					function() {
						if (this.href && (this.rel == imageLink.rel)) {
							opts.imageArray.push(new Array(this.href,
									opts.displayTitle ? this.title : ''));
						}
					})
			for (i = 0; i < opts.imageArray.length; i++) {
				for (j = opts.imageArray.length - 1; j > i; j--) {
					if (opts.imageArray[i][0] == opts.imageArray[j][0]) {
						opts.imageArray.splice(j, 1);
					}
				}
			}
			while (opts.imageArray[imageNum][0] != imageLink.href) {
				imageNum++;
			}
		}
		var arrayPageScroll = $.fn.lightbox.getPageScroll();
		var lightboxTop = arrayPageScroll[1] + (arrayPageSize[3] / 10);
		var lightboxLeft = arrayPageScroll[0];
		$('#lightbox').css( {
			top : lightboxTop + 'px',
			left : lightboxLeft + 'px'
		}).show();
		if (!opts.slideNavBar)
			$('#imageData').hide();
		$.fn.lightbox.changeImage(imageNum);
	};
	$.fn.lightbox.changeImage = function(imageNum) {
		if (opts.inprogress == false) {
			opts.inprogress = true;
			opts.activeImage = imageNum;
			$('#loading').show();
			$('#lightboxImage').hide();
			$('#hoverNav').hide();
			$('#prevLink').hide();
			$('#nextLink').hide();
			if (opts.slideNavBar) {
				$('#imageDataContainer').hide();
				$('#imageData').hide();
				$.fn.doChangeImage();
			} else {
				$.fn.doChangeImage();
			}
		}
	};
	$.fn.doChangeImage = function() {
		imgPreloader = new Image();
		imgPreloader.onload = function() {
			var newWidth = imgPreloader.width;
			var newHeight = imgPreloader.height;
			if (opts.fitToScreen) {
				var arrayPageSize = $.fn.lightbox.getPageSize();
				var ratio;
				var initialPageWidth = arrayPageSize[2] - 2 * opts.borderSize;
				var initialPageHeight = arrayPageSize[3] - 200;
				if (imgPreloader.height > initialPageHeight) {
					newWidth = parseInt((initialPageHeight / imgPreloader.height)
							* imgPreloader.width);
					newHeight = initialPageHeight;
				} else if (imgPreloader.width > initialPageWidth) {
					newHeight = parseInt((initialPageWidth / imgPreloader.width)
							* imgPreloader.height);
					newWidth = initialPageWidth;
				}
			}
			$('#lightboxImage').attr('src',
					opts.imageArray[opts.activeImage][0]).width(newWidth)
					.height(newHeight);
			$.fn.lightbox.resizeImageContainer(newWidth, newHeight);
		}
		imgPreloader.src = opts.imageArray[opts.activeImage][0];
	}
	$.fn.lightbox.end = function() {
		$.fn.lightbox.disableKeyboardNav();
		$('#lightbox').hide();
		$('#overlay').fadeOut();
		$('select, object, embed').show();
	};
	$.fn.lightbox.preloadNeighborImages = function() {
		if ((opts.imageArray.length - 1) > opts.activeImage) {
			preloadNextImage = new Image();
			preloadNextImage.src = opts.imageArray[opts.activeImage + 1][0];
		}
		if (opts.activeImage > 0) {
			preloadPrevImage = new Image();
			preloadPrevImage.src = opts.imageArray[opts.activeImage - 1][0];
		}
	};
	$.fn.lightbox.keyboardAction = function(e) {
		if (e == null) {
			var keycode = event.keyCode;
			var escapeKey = 27;
		} else {
			var keycode = e.keyCode;
			var escapeKey = e.DOM_VK_ESCAPE;
		}
		var key = String.fromCharCode(keycode).toLowerCase();
		if ((key == 'x') || (key == 'o') || (key == 'c')
				|| (keycode == escapeKey)) {
			$.fn.lightbox.end();
		} else if ((key == 'p') || (keycode == 37)) {
			if (opts.activeImage != 0) {
				$.fn.lightbox.disableKeyboardNav();
				$.fn.lightbox.changeImage(opts.activeImage - 1);
			}
		} else if ((key == 'n') || (keycode == 39)) {
			if (opts.activeImage != (opts.imageArray.length - 1)) {
				$.fn.lightbox.disableKeyboardNav();
				$.fn.lightbox.changeImage(opts.activeImage + 1);
			}
		}
	};
	$.fn.lightbox.resizeImageContainer = function(imgWidth, imgHeight) {
		opts.widthCurrent = document.getElementById('outerImageContainer').offsetWidth;
		opts.heightCurrent = document.getElementById('outerImageContainer').offsetHeight;
		var widthNew = (imgWidth + (opts.borderSize * 2));
		var heightNew = (imgHeight + (opts.borderSize * 2));
		opts.xScale = (widthNew / opts.widthCurrent) * 100;
		opts.yScale = (heightNew / opts.heightCurrent) * 100;
		wDiff = opts.widthCurrent - widthNew;
		hDiff = opts.heightCurrent - heightNew;
		$('#imageDataContainer').animate( {
			width : widthNew
		}, opts.resizeSpeed, 'linear');
		$('#outerImageContainer').animate( {
			width : widthNew
		}, opts.resizeSpeed, 'linear', function() {
			$('#outerImageContainer').animate( {
				height : heightNew
			}, opts.resizeSpeed, 'linear', function() {
				$.fn.lightbox.showImage();
			});
		});
		if ((hDiff == 0) && (wDiff == 0)) {
			if (jQuery.browser.msie) {
				$.fn.lightbox.pause(250);
			} else {
				$.fn.lightbox.pause(100);
			}
		}
		$('#prevLink').height(imgHeight);
		$('#nextLink').height(imgHeight);
	};
	$.fn.lightbox.showImage = function() {
		$('#loading').hide();
		$('#lightboxImage').fadeIn("slow");
		$.fn.lightbox.updateDetails();
		$.fn.lightbox.preloadNeighborImages();
		opts.inprogress = false;
	};
	$.fn.lightbox.updateDetails = function() {
		if (opts.imageArray[opts.activeImage][1]) {
			$('#caption').html(opts.imageArray[opts.activeImage][1]).show();
		}
		if (opts.imageArray.length > 1) {
			var nav_html;
			nav_html = opts.strings.image + (opts.activeImage + 1)
					+ opts.strings.of + opts.imageArray.length;
			if ((opts.activeImage) > 0) {
				nav_html = '<a title="' + opts.strings.prevLinkTitle
						+ '" href="#" id="prevLinkText">'
						+ opts.strings.prevLinkText + "</a>" + nav_html;
			}
			if ((opts.activeImage + 1) < opts.imageArray.length) {
				nav_html += '<a title="' + opts.strings.nextLinkTitle
						+ '" href="#" id="nextLinkText">'
						+ opts.strings.nextLinkText + "</a>";
			}
			$('#numberDisplay').html(nav_html).show();
		}
		if (opts.slideNavBar) {
			$("#imageData").slideDown(opts.navBarSlideSpeed);
		} else {
			$("#imageData").show();
		}
		var arrayPageSize = $.fn.lightbox.getPageSize();
		$('#overlay').height(arrayPageSize[1]);
		$.fn.lightbox.updateNav();
	};
	$.fn.lightbox.updateNav = function() {
		$('#hoverNav').show();
		if (opts.activeImage != 0) {
			$('#prevLink,#prevLinkText').show().click(function() {
				$.fn.lightbox.changeImage(opts.activeImage - 1);
				return false;
			});
		}
		if (opts.activeImage != (opts.imageArray.length - 1)) {
			$('#nextLink,#nextLinkText').show().click(function() {
				$.fn.lightbox.changeImage(opts.activeImage + 1);
				return false;
			});
		}
		$.fn.lightbox.enableKeyboardNav();
	};
	$.fn.lightbox.enableKeyboardNav = function() {
		document.onkeydown = $.fn.lightbox.keyboardAction;
	};
	$.fn.lightbox.disableKeyboardNav = function() {
		document.onkeydown = '';
	};
	$.fn.lightbox.defaults = {
		fileLoadingImage : '/pics_must/lightbox/loader.gif',
		fileBottomNavCloseImage : '/pics_must/lightbox/lightboxclose.png',
		overlayBgColor : '#000000',
		overlayOpacity : 0.85,
		borderSize : 10,
		imageArray : new Array,
		activeImage : null,
		inprogress : false,
		resizeSpeed : 350,
		widthCurrent : 250,
		heightCurrent : 250,
		xScale : 1,
		yScale : 1,
		displayTitle : true,
		navbarOnTop : false,
		slideNavBar : true,
		navBarSlideSpeed : 350,
		displayHelp : false,
		strings : {
			help : ' \u2190 / P - previous image\u00a0\u00a0\u00a0\u00a0\u2192 / N - next image\u00a0\u00a0\u00a0\u00a0ESC / X - close image gallery',
			prevLinkTitle : ' << ',
			nextLinkTitle : ' >> ',
			prevLinkText : ' << ',
			nextLinkText : ' >> ',
			closeTitle : 'schliessen',
			image : 'Bild ',
			of : ' of '
		},
		fitToScreen : true
	};
})(jQuery);