/**
 * 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 CCAttribution-ShareAlike 2.5 Brazil - http://creativecommons.org/licenses/by-sa/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:'./go/LIGHTBOX/loading.gif',
      imageBtnPrev:'./go/LIGHTBOX/prev.gif',
      imageBtnNext:'./go/LIGHTBOX/next.gif',
      imageBtnClose:'./go/LIGHTBOX/close.gif',
      imageBlank:'./go/LIGHTBOX/blank.gif',
      containerBorderSize:10,
      containerResizeSpeed:400,
      txtImage:'Fotka',
      txtOf:'z',
      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).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)||(keycode==27)){
        _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);