/**
 * 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:'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:'Image',txtOf:'of',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-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"><span id="lightbox-secNav-btnClose"><img src="'+settings.imageBtnClose+'"></span></div></div></div><div id="lightbox-container-image-box"><div id="lightbox-container-image"><img id="lightbox-image"><div style="" id="lightbox-nav"><span id="lightbox-nav-btnPrev"></span><span id="lightbox-nav-btnNext"></span></div><div id="lightbox-loading"><span id="lightbox-loading-link"><img src="'+settings.imageLoading+'"></span></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).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() {
					if (settings.activeImage!=(settings.imageArray.length-1)) {
						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);