(function ($) {
	$.fn.lightBox = function (settings) {
		settings = jQuery.extend({overlayBgColor:"#000", overlayOpacity:0.8, fixedNavigation:false, imageLoading:"/images/lightbox-ico-loading.gif", imageBtnPrev:"/images/lightbox-btn-prev.gif", imageBtnNext:"/images/lightbox-btn-next.gif", imageBtnClose:"/images/lightbox-btn-close.gif", imageBlank:"/images/lightbox-blank.gif", containerBorderSize:10, containerResizeSpeed:400, txtImage:"图片", txtOf:"/", 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 () {
			objImagePreloader.src=settings.imageArray[settings.activeImage][0];
			
			if(objImagePreloader.width>800&&objImagePreloader.height>600){
				objImagePreloader.width=800;
				objImagePreloader.height=600;
			}
			if(objImagePreloader.width>800&&objImagePreloader.height<600){
				var temp=objImagePreloader.width-800;
				objImagePreloader.width=800;
				if(objImagePreloader.hight>temp){
				objImagePreloader.height=objImagePreloader.height-temp;
				}
			}
			if(objImagePreloader.height>600&&objImagePreloader.width<800){
				var temp=objImagePreloader.height-600;
				objImagePreloader.height=600;
				if(objImagePreloader.width>temp){
				objImagePreloader.width=objImagePreloader.width-temp;
				}
			}
				$("#lightbox-image").attr("src", objImagePreloader.src).attr("width",objImagePreloader.width).attr("height",objImagePreloader.height);
				_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});
			$("#lightbox-nav-btnPrev,#lightbox-nav-btnNext").css({height:intImageHeight + (settings.containerBorderSize * 2)});
		}
		function _show_image() {
			var path=$("#lightbox-image").attr("src");
			var image=new Image(); 
			image.src=path;
			$("#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").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);