/* ------------------------------------------------------------------------
  Class: prettyPhoto
  Use: Lightbox clone for jQuery
  Author: Stephane Caron (http://www.no-margin-for-errors.com)
  Version: 2.3.0

Modification; Support for IE window heights when scrolling
------------------------------------------------------------------------- */
 
(function($) {
  $.fn.prettyPhoto = function(settings) {
    // global Variables
    var caller = 0;
    var doresize = true;
    var imagesArray = [];
    var setPosition = 0; /* Position in the set */
  
    $(window).scroll(function(){_centerPicture();});
    $(window).resize(function(){ _centerPicture(); _resizeOverlay(); });
    $(document).keyup(function(e){
      switch(e.keyCode){
        case 37:
          if (setPosition == 1) return;
          changePicture('previous');
          break;
        case 39:
          if (setPosition == setCount) return;
          changePicture('next');
          break;
        case 27:
          close();
          break;
      };
      });
 
  
    settings = jQuery.extend({
      animationSpeed: 'normal', /* fast/slow/normal */
      padding: 40, /* padding for each side of the picture */
      opacity: 0.35, /* Value between 0 and 1 */
      showTitle: true, /* true/false */
      allowresize: true, /* true/false */
      counter_separator_label: '/', /* The separator for the gallery counter 1 "of" 2 */
      theme: 'light_rounded' /* light_rounded / dark_rounded / light_square / dark_square */
    }, settings);
  
    $(this).each(function(){
      var hasTitle = false;
      var isSet = false;
      var setCount = 0; /* Total images in the set */
      var arrayPosition = 0; /* Total position in the array */
      
      imagesArray[imagesArray.length] = this;
      $(this).bind('click',function(){
        open(this);
        return false;
      });
    });
  
    function open(el) {
      $caller = $(el);
    
      // Find out if the picture is part of a set
      theRel = $caller.attr('rel');
      galleryRegExp = /\[(?:.*)\]/;
      theGallery = galleryRegExp.exec(theRel);
    
      // Calculate the number of items in the set, and the position of the clicked picture.
      isSet = false;
      setCount = 0;
      for (i = 0; i < imagesArray.length; i++){
        if($(imagesArray[i]).attr('rel').indexOf(theGallery) != -1){
          setCount++;
          if(setCount > 1) isSet = true;
 
          if($(imagesArray[i]).attr('href') == $caller.attr('href')){
            setPosition = setCount;
            arrayPosition = i;
          };
        };
      };
    
      _buildOverlay();
 
      // Display the current position
      $('div.pp_pic_holder p.currentTextHolder').text(setPosition + settings.counter_separator_label + setCount);
 
      // Position the picture in the center of the viewing area
      _centerPicture();
    
      $('div.pp_pic_holder #full_res').hide();
      $('.pp_loaderIcon').show();
      
      _preload();
    };
  
    showimage = function(width,height,containerWidth,containerHeight,contentHeight,contentWidth,resized){
      $('.pp_loaderIcon').hide();
      var scrollPos = _getScroll();
 
      if($.browser.opera) {
        windowHeight = window.innerHeight;
        windowWidth = window.innerWidth;
      }else{
        windowHeight = $(window).height();
        windowWidth = $(window).width();
      };
 
      $('div.pp_pic_holder .pp_content').animate({'height':contentHeight,'width':containerWidth},settings.animationSpeed);
 
      projectedTop = scrollPos['scrollTop'] + ((windowHeight/2) - (containerHeight/2));
      if(projectedTop < 0) projectedTop = 0 + $('div.ppt').height();
 
      // Resize the holder
      $('div.pp_pic_holder').animate({
        'top': projectedTop,
        'left': ((windowWidth/2) - (containerWidth/2)),
        'width': containerWidth
      },settings.animationSpeed,function(){
        $('#fullResImage').attr({
          'width':width,
          'height':height
        });
 
        $('div.pp_pic_holder').width(containerWidth);
        $('div.pp_pic_holder .hoverContainer').height(height).width(width);
 
        // Fade the new image
        $('div.pp_pic_holder #full_res').fadeIn(settings.animationSpeed);
 
        // Show the nav elements
        _shownav();
      
        // Fade the resizing link if the image is resized
        if(resized) $('a.pp_expand,a.pp_contract').fadeIn(settings.animationSpeed);
      });
    };
  
    function changePicture(direction){
      if(direction == 'previous') {
        arrayPosition--;
        setPosition--;
      }else{
        arrayPosition++;
        setPosition++;
      };
 
      // Allow the resizing of the images
      if(!doresize) doresize = true;
 
      // Fade out the current picture
      $('div.pp_pic_holder .hoverContainer,div.pp_pic_holder .pp_details').fadeOut(settings.animationSpeed);
      $('div.pp_pic_holder #full_res').fadeOut(settings.animationSpeed,function(){
        $('.pp_loaderIcon').show();
      
        // Preload the image
        _preload();
      });
 
      _hideTitle();
      $('a.pp_expand,a.pp_contract').fadeOut(settings.animationSpeed,function(){$(this).removeClass('pp_contract').addClass('pp_expand');});
    };
  
    function close(){
      $('div.pp_pic_holder,div.ppt').fadeOut(settings.animationSpeed, function(){
        $('div.pp_overlay').fadeOut(settings.animationSpeed, function(){
          $('div.pp_overlay,div.pp_pic_holder,div.ppt').remove();
        
          // To fix the bug with IE select boxes
          if($.browser.msie && $.browser.version == 6){$('select').css('visibility','visible');};
        });
      });
      
      doresize = true;
    };
  
    function _checkPosition(){
      // If at the end, hide the next link
      if(setPosition == setCount) {
        $('div.pp_pic_holder a.pp_next').css('visibility','hidden');
        $('div.pp_pic_holder a.pp_arrow_next').addClass('disabled').unbind('click');
      }else{ 
        $('div.pp_pic_holder a.pp_next').css('visibility','visible');
        $('div.pp_pic_holder a.pp_arrow_next.disabled').removeClass('disabled').bind('click',function(){
          changePicture('next');
          return false;
        });
      };
    
      // If at the beginning, hide the previous link
      if(setPosition == 1) {
        $('div.pp_pic_holder a.pp_previous').css('visibility','hidden');
        $('div.pp_pic_holder a.pp_arrow_previous').addClass('disabled').unbind('click');
      }else{
        $('div.pp_pic_holder a.pp_previous').css('visibility','visible');
        $('div.pp_pic_holder a.pp_arrow_previous.disabled').removeClass('disabled').bind('click',function(){
          changePicture('previous');
          return false;
        });
      };
    
      // Change the current picture text
      $('div.pp_pic_holder p.currentTextHolder').text(setPosition + settings.counter_separator_label + setCount);
    
      var $c = (isSet) ? $(imagesArray[arrayPosition]) : $caller;
 
      if($c.attr('title')){
        $('div.pp_pic_holder .pp_description').show().html(unescape($c.attr('title')));
      }else{
        $('div.pp_pic_holder .pp_description').hide().text('');
      };
    
      if($c.find('img').attr('alt') && settings.showTitle){
        hasTitle = true;
        $('div.ppt .ppt_content').html(unescape($c.find('img').attr('alt')));
      }else{
        hasTitle = false;
      };
    };
  
    function _fitToViewport(width,height){
      hasBeenResized = false;
    
      $('div.pp_pic_holder .pp_details').width(width); /* To have the correct height */
      $('div.pp_pic_holder .pp_details p.pp_description').width(width - parseFloat($('div.pp_pic_holder a.pp_close').css('width'))); /* So it doesn't overlap the button */
    
      // Get the container size, to resize the holder to the right dimensions
      contentHeight = height + parseFloat($('div.pp_pic_holder .pp_details').height()) + parseFloat($('div.pp_pic_holder .pp_details').css('margin-top')) + parseFloat($('div.pp_pic_holder .pp_details').css('margin-bottom'));
      contentWidth = width;
      containerHeight = height + parseFloat($('div.ppt').height()) + parseFloat($('div.pp_pic_holder .pp_top').height()) + parseFloat($('div.pp_pic_holder .pp_bottom').height());
      containerWidth = width + settings.padding;
    
      // Define them in case there's no resize needed
      imageWidth = width;
      imageHeight = height;
 
      windowHeight = $(window).height();
      windowWidth = $(window).width();
    
      if( ((containerWidth > windowWidth) || (containerHeight > windowHeight)) && doresize && settings.allowresize) {
        hasBeenResized = true;
        notFitting = true;
      
        while (notFitting){
          if((containerWidth > windowWidth)){
            imageWidth = (windowWidth - 200);
            imageHeight = (height/width) * imageWidth;
          }else if((containerHeight > windowHeight)){
            imageHeight = (windowHeight - 200);
            imageWidth = (width/height) * imageHeight;
          }else{
            notFitting = false;
          };
 
          containerHeight = imageHeight;
          containerWidth = imageWidth;
        };
      
        // Define the new dimensions
        contentHeight = imageHeight + parseFloat($('div.pp_pic_holder .pp_details').height()) + parseFloat($('div.pp_pic_holder .pp_details').css('margin-top')) + parseFloat($('div.pp_pic_holder .pp_details').css('margin-bottom'));
        contentWidth = imageWidth;
        containerHeight = imageHeight + parseFloat($('div.ppt').height()) + parseFloat($('div.pp_pic_holder .pp_top').height()) + parseFloat($('div.pp_pic_holder .pp_bottom').height());
        containerWidth = imageWidth + settings.padding;
      
        $('div.pp_pic_holder .pp_details').width(contentWidth); /* To have the correct height */
        $('div.pp_pic_holder .pp_details p.pp_description').width(contentWidth - parseFloat($('div.pp_pic_holder a.pp_close').css('width'))); /* So it doesn't overlap the button */
      };
 
      return {
        width:imageWidth,
        height:imageHeight,
        containerHeight:containerHeight,
        containerWidth:containerWidth,
        contentHeight:contentHeight,
        contentWidth:contentWidth,
        resized:hasBeenResized
      };
    };
  
    function _centerPicture(){
      $picHolder = $('div.pp_pic_holder');
      $titleHolder = $('div.ppt');
      
      if ($picHolder.size() == 0) return; //Make sure the gallery is open
      
      var scrollPos = _getScroll();
    
      if($.browser.opera) {
        windowHeight = window.innerHeight;
        windowWidth = window.innerWidth;
      }else{
        windowHeight = $(window).height();
        windowWidth = $(window).width();
      };
    
      if(doresize) {
        projectedTop = (windowHeight/2) + scrollPos['scrollTop'] - ($picHolder.height()/2);
        if(projectedTop < 0) projectedTop = 0 + $titleHolder.height();
        
        $picHolder.css({
          'top': projectedTop,
          'left': (windowWidth/2) + scrollPos['scrollLeft'] - ($picHolder.width()/2)
        });
    
        $titleHolder.css({
          'top' : $picHolder.offset().top - $picHolder.height(),
          'left' : $picHolder.offset().left + (settings.padding/2)
        });
      };
    };
  
    function _shownav(){
      if(isSet) $('div.pp_pic_holder .hoverContainer').fadeIn(settings.animationSpeed);
      $('div.pp_pic_holder .pp_details').fadeIn(settings.animationSpeed);
 
      _showTitle();
    };
  
    function _showTitle(){
      if(settings.showTitle && hasTitle){
        $('div.ppt').css({
          'top' : $('div.pp_pic_holder').offset().top - 22,
          'left' : $('div.pp_pic_holder').offset().left + (settings.padding/2),
          'display' : 'none'
        });
      
        $('div.ppt div.ppt_content').css('width','auto');
      
        if($('div.ppt').width() > $('div.pp_pic_holder').width()){
          $('div.ppt div.ppt_content').css('width',$('div.pp_pic_holder').width() - (settings.padding * 2));
        }else{
          $('div.ppt div.ppt_content').css('width','');
        };
      
        $('div.ppt').fadeIn(settings.animationSpeed);
      };
    };
  
    function _hideTitle() {$('div.ppt').fadeOut(settings.animationSpeed);};
  
    function _preload(){
      // Hide the next/previous links if on first or last images.
      _checkPosition();
    
      // Set the new image
      imgPreloader = new Image();
    
      // Preload the neighbour images
      nextImage = new Image();
      if(isSet && setPosition > setCount) nextImage.src = $(imagesArray[arrayPosition + 1]).attr('href');
      prevImage = new Image();
      if(isSet && imagesArray[arrayPosition - 1]) prevImage.src = $(imagesArray[arrayPosition - 1]).attr('href');
 
      $('div.pp_pic_holder .pp_content').css('overflow','hidden');
    
      if(isSet) {
        $('div.pp_pic_holder #fullResImage').attr('src',$(imagesArray[arrayPosition]).attr('href'));
      }else{
        $('div.pp_pic_holder #fullResImage').attr('src',$caller.attr('href'));
      };
 
      imgPreloader.onload = function(){
        var correctSizes = _fitToViewport(imgPreloader.width,imgPreloader.height);
        imgPreloader.width = correctSizes['width'];
        imgPreloader.height = correctSizes['height'];
      
        // Need that small delay for the anim to be nice
        setTimeout('showimage(imgPreloader.width,imgPreloader.height,'+correctSizes["containerWidth"]+','+correctSizes["containerHeight"]+','+correctSizes["contentHeight"]+','+correctSizes["contentWidth"]+','+correctSizes["resized"]+')',500);
      };
    
      (isSet) ? imgPreloader.src = $(imagesArray[arrayPosition]).attr('href') : imgPreloader.src = $caller.attr('href');
    };
  
    function _getScroll(){
  var scrOfX = 0, scrOfY = 0;
  if( typeof( window.pageYOffset ) == 'number' ) {
	//Netscape compliant
	scrollTop = window.pageYOffset;
	scrollLeft = window.pageXOffset;
  } else if( document.body && ( document.body.scrollLeft || document.body.scrollTop ) ) {
	//DOM compliant
	scrollTop = document.body.scrollTop;
	scrollLeft = document.body.scrollLeft;
  } else if( document.documentElement && ( document.documentElement.scrollLeft || document.documentElement.scrollTop ) ) {
	//IE6 standards compliant mode
	scrollTop = document.documentElement.scrollTop;
	scrollLeft = document.documentElement.scrollLeft;
  }
      return {scrollTop:scrollTop,scrollLeft:scrollLeft};
    };
    


    function _resizeOverlay() {
      $('div.pp_overlay').css({
        'height':$(document).height(),
        'width':$(window).width()
      });
    };
  
    function _buildOverlay(){
      toInject = "";
      
      // Build the background overlay div
      toInject += "<div class='pp_overlay'></div>";
      
      // Basic HTML for the picture holder
      toInject += '<div class="pp_pic_holder"><div class="pp_top"><div class="pp_left"></div><div class="pp_middle"></div><div class="pp_right"></div></div><div class="pp_content"><a href="#" class="pp_expand" title="Expand the image">Expand</a><div class="pp_loaderIcon"></div><div class="hoverContainer"><a class="pp_next" href="#">next</a><a class="pp_previous" href="#">previous</a></div><div id="full_res"><img id="fullResImage" src="" /></div><div class="pp_details clearfix"><a class="pp_close" href="#">Close</a><p class="pp_description"></p><div class="pp_nav"><a href="#" class="pp_arrow_previous">Previous</a><p class="currentTextHolder">0'+settings.counter_separator_label+'0</p><a href="#" class="pp_arrow_next">Next</a></div></div></div><div class="pp_bottom"><div class="pp_left"></div><div class="pp_middle"></div><div class="pp_right"></div></div></div>';
      
      // Basic html for the title holder
      toInject += '<div class="ppt"><div class="ppt_left"></div><div class="ppt_content"></div><div class="ppt_right"></div></div>';
      
      $('body').append(toInject);
      
      $('div.pp_overlay').css('height',$(document).height()).bind('click',function(){close();});
 
      $('.pp_pic_holder,.ppt').css({'opacity': 0}).addClass(settings.theme);
 
      $('a.pp_close').bind('click',function(){ close(); return false; });
 
      $('a.pp_expand').bind('click',function(){        
        $this = $(this);
        
        // Expand the image
        if($this.hasClass('pp_expand')){
          $this.removeClass('pp_expand').addClass('pp_contract');
          doresize = false;
        }else{
          $this.removeClass('pp_contract').addClass('pp_expand');
          doresize = true;
        };
      
        _hideTitle();
        
        $('div.pp_pic_holder .hoverContainer,div.pp_pic_holder #full_res ,div.pp_pic_holder .pp_details').fadeOut(settings.animationSpeed,function(){_preload();});
    
        return false;  
      });
    
      $('.pp_pic_holder .pp_previous,.pp_pic_holder .pp_arrow_previous').bind('click',function(){
        changePicture('previous');
        return false;
      });
    
      $('.pp_pic_holder .pp_next,.pp_pic_holder .pp_arrow_next').bind('click',function(){
        changePicture('next');
        return false;
      });
 
      $('.hoverContainer').css({
        'margin-left': settings.padding/2
      });
    
      // If it's not a set, hide the links
      if(!isSet) {$('.hoverContainer,.pp_nav').hide();};
 
 
      // To fix the bug with IE select boxes
      if($.browser.msie && $.browser.version == 6){
        $('body').addClass('ie6');
        $('select').css('visibility','hidden');
      };
 
      // Then fade it in
      $('div.pp_overlay').css('opacity',0).fadeTo(settings.animationSpeed,settings.opacity, function(){
        $('div.pp_pic_holder').css('opacity',0).fadeIn(settings.animationSpeed,function(){
          // To fix an IE bug
          $('div.pp_pic_holder').attr('style','left:'+$('div.pp_pic_holder').css('left')+';top:'+$('div.pp_pic_holder').css('top')+';');
        });
      });
    };
  };
})(jQuery);