/*
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  GalleryView - jQuery Content Gallery Plugin
  Author:     Jack Anderson
  Version:    2.0 (May 5, 2009)
  Documentation:  http://www.spaceforaname.com/galleryview/
  
  Please use this development script if you intend to make changes to the
  plugin code.  For production sites, please use jquery.galleryview-2.0-pack.js.
  
  See CHANGELOG.txt for a review of changes and LICENSE.txt for the applicable
  licensing information.


*/

//Global variable to check if window is already loaded
//Used for calling GalleryView after page has loaded
var window_loaded = false;
      
(function($){
  $.fn.galleryView = function(options) {
    var opts = $.extend($.fn.galleryView.defaults,options);
    
    var id;
    var iterator = 0;
    var item_count = 0;
    var slide_method;
    var theme_path;
    var paused = false;
    
    //Element dimensions
    var gallery_width;
    var gallery_height;
    var pointer_height;
    var pointer_width;
    var strip_width;
    var strip_height;
    var wrapper_width;
    var f_frame_width;
    var f_frame_height;
    var frame_caption_size = 20;
    var gallery_padding;
    var filmstrip_margin;
    var filmstrip_orientation;
    
    
    //Arrays used to scale frames and panels
    var frame_img_scale = new Object();
    var panel_img_scale = new Object();
    var img_h = new Object();
    var img_w = new Object();
    
    //Flag indicating whether to scale panel images
    var scale_panel_images = true;
    
    var panel_nav_displayed = false;
    
    //Define jQuery objects for reuse
    var j_gallery;
    var j_filmstrip;
    var j_frames;
    var j_frame_img_wrappers;
    var j_panels;
    var j_pointer;
    
    
/************************************************/
/*  Plugin Methods                */
/************************************************/  

  //Transition from current item to item 'i'
    function showItem(i) {
      //Disable next/prev buttons until transition is complete
      $('.nav-next-overlay',j_gallery).unbind('click');
      $('.nav-prev-overlay',j_gallery).unbind('click');
      $('.nav-next',j_gallery).unbind('click');
      $('.nav-prev',j_gallery).unbind('click');
      j_frames.unbind('click');
      
      //Fade out all frames while fading in target frame
      if(opts.show_filmstrip) {
        j_frames.removeClass('current').find('img').stop().animate({
          'opacity':opts.frame_opacity
        },opts.transition_speed);
        j_frames.eq(i).addClass('current').find('img').stop().animate({
          'opacity':1.0
        },opts.transition_speed);
      }
      
      //If the gallery has panels and the panels should fade, fade out all panels while fading in target panel
      if(opts.show_panels && opts.fade_panels) {
        j_panels.fadeOut(opts.transition_speed).eq(i%item_count).fadeIn(opts.transition_speed,function(){
          if(!opts.show_filmstrip) {
            $('.nav-prev-overlay',j_gallery).click(showPrevItem);
            $('.nav-next-overlay',j_gallery).click(showNextItem);
            $('.nav-prev',j_gallery).click(showPrevItem);
            $('.nav-next',j_gallery).click(showNextItem);   
          }
        });
      }
      
      //If gallery has a filmstrip, handle animation of frames
      if(opts.show_filmstrip) {
        //Slide either pointer or filmstrip, depending on transition method
        if(slide_method=='strip') {
          //Stop filmstrip if it's currently in motion
          j_filmstrip.stop();
          
          if(filmstrip_orientation=='horizontal') {
            //Determine distance between pointer (eventual destination) and target frame
            var distance = getPos(j_frames[i]).left - (getPos(j_pointer[0]).left+(pointer_width/2)-(f_frame_width/2));
            var diststr = (distance>=0?'-=':'+=')+Math.abs(distance)+'px';
            
            //Animate filmstrip and slide target frame under pointer
            j_filmstrip.animate({
              'left':diststr
            },opts.transition_speed,opts.easing,function(){
              //Always ensure that there are a sufficient number of hidden frames on either
              //side of the filmstrip to avoid empty frames
              var old_i = i;
              if(i>item_count) {
                i = i%item_count;
                iterator = i;
                j_filmstrip.css('left','-'+((f_frame_width+opts.frame_gap)*i)+'px');
              } else if (i<=(item_count-strip_size)) {
                i = (i%item_count)+item_count;
                iterator = i;
                j_filmstrip.css('left','-'+((f_frame_width+opts.frame_gap)*i)+'px');
              }
              //If the target frame has changed due to filmstrip shifting,
              //Make sure new target frame has 'current' class and correct size/opacity settings
              if(old_i != i) {
                j_frames.eq(old_i).removeClass('current').find('img').css({
                  'opacity':opts.frame_opacity
                });
                j_frames.eq(i).addClass('current').find('img').css({
                  'opacity':1.0
                });
              }
              if(!opts.fade_panels) {
                j_panels.hide().eq(i%item_count).show();
              }
              
              //Enable navigation now that animation is complete
              $('.nav-prev-overlay',j_gallery).click(showPrevItem);
              $('.nav-next-overlay',j_gallery).click(showNextItem);
              $('.nav-prev',j_gallery).click(showPrevItem);
              $('.nav-next',j_gallery).click(showNextItem);
              enableFrameClicking();
            });
          } else {
            //Determine distance between pointer (eventual destination) and target frame
            var distance = getPos(j_frames[i]).top - (getPos(j_pointer[0]).top+(pointer_height)-(f_frame_height/2));
            var diststr = (distance>=0?'-=':'+=')+Math.abs(distance)+'px';
            
            //Animate filmstrip and slide target frame under pointer
            j_filmstrip.animate({
              'top':diststr
            },opts.transition_speed,opts.easing,function(){
              //Always ensure that there are a sufficient number of hidden frames on either
              //side of the filmstrip to avoid empty frames
              var old_i = i;
              if(i>item_count) {
                i = i%item_count;
                iterator = i;
                j_filmstrip.css('top','-'+((f_frame_height+opts.frame_gap)*i)+'px');
              } else if (i<=(item_count-strip_size)) {
                i = (i%item_count)+item_count;
                iterator = i;
                j_filmstrip.css('top','-'+((f_frame_height+opts.frame_gap)*i)+'px');
              }
              //If the target frame has changed due to filmstrip shifting,
              //Make sure new target frame has 'current' class and correct size/opacity settings
              if(old_i != i) {
                j_frames.eq(old_i).removeClass('current').find('img').css({
                  'opacity':opts.frame_opacity
                });
                j_frames.eq(i).addClass('current').find('img').css({
                  'opacity':1.0
                });
              }
              if(!opts.fade_panels) {
                j_panels.hide().eq(i%item_count).show();
              }
              
              //Enable navigation now that animation is complete
              $('.nav-prev-overlay',j_gallery).click(showPrevItem);
              $('.nav-next-overlay',j_gallery).click(showNextItem);
              $('.nav-prev',j_gallery).click(showPrevItem);
              $('.nav-next',j_gallery).click(showNextItem);
              enableFrameClicking();
            });
          }
        } else if(slide_method=='pointer') {
          //Stop pointer if it's currently in motion
          j_pointer.stop();
          //Get position of target frame
          var pos = getPos(j_frames[i]);
          
          if(filmstrip_orientation=='horizontal') {
            //Slide the pointer over the target frame
            j_pointer.animate({
              'left':(pos.left+(f_frame_width/2)-(pointer_width/2)+'px')
            },opts.transition_speed,opts.easing,function(){ 
              if(!opts.fade_panels) {
                j_panels.hide().eq(i%item_count).show();
              } 
              $('.nav-prev-overlay',j_gallery).click(showPrevItem);
              $('.nav-next-overlay',j_gallery).click(showNextItem);
              $('.nav-prev',j_gallery).click(showPrevItem);
              $('.nav-next',j_gallery).click(showNextItem);
              enableFrameClicking();
            });
          } else {//Slide the pointer over the target frame
            j_pointer.animate({
              'top':(pos.top+(f_frame_height/2)-(pointer_height)+'px')
            },opts.transition_speed,opts.easing,function(){ 
              if(!opts.fade_panels) {
                j_panels.hide().eq(i%item_count).show();
              } 
              $('.nav-prev-overlay',j_gallery).click(showPrevItem);
              $('.nav-next-overlay',j_gallery).click(showNextItem);
              $('.nav-prev',j_gallery).click(showPrevItem);
              $('.nav-next',j_gallery).click(showNextItem);
              enableFrameClicking();
            });
          }
        }
      
      }
    };
    
  //Find padding and border widths applied to element
  //If border is non-numerical ('thin','medium', etc) set to zero
    function extraWidth(el) {
      if(!el) return 0;
      if(el.length==0) return 0;
      el = el.eq(0);
      var ew = 0;
      ew += getInt(el.css('paddingLeft'));
      ew += getInt(el.css('paddingRight'));
      ew += getInt(el.css('borderLeftWidth'));
      ew += getInt(el.css('borderRightWidth'));
      return ew;
    }
  //Find padding and border heights applied to element
  //If border is non-numerical ('thin','medium', etc) set to zero
    function extraHeight(el) {
      if(!el) return 0;
      if(el.length==0) return 0;
      el = el.eq(0);
      var eh = 0;
      eh += getInt(el.css('paddingTop'));
      eh += getInt(el.css('paddingBottom'));
      eh += getInt(el.css('borderTopWidth'));
      eh += getInt(el.css('borderBottomWidth'));
      return eh;
    }
    
  //Halt transition timer, move to next item, restart timer
    function showNextItem() {
      
      $(document).stopTime("transition");
      if(++iterator==j_frames.length) {iterator=0;}
      showItem(iterator);
      if(!paused) {
        $(document).everyTime(opts.transition_interval,"transition",function(){
          showNextItem();
        });
      }
    };
    
  //Halt transition timer, move to previous item, restart timer
    function showPrevItem() {
      $(document).stopTime("transition");
      if(--iterator<0) {iterator = item_count-1;}
      showItem(iterator);
      if(!paused) {
        $(document).everyTime(opts.transition_interval,"transition",function(){
          showNextItem();
        });
      }
    };
    
  //Get absolute position of element in relation to top-left corner of gallery
  //If el=gallery, return position of gallery within browser viewport
    function getPos(el) {
      var left = 0, top = 0;
      var el_id = el.id;
      if(el.offsetParent) {
        do {
          left += el.offsetLeft;
          top += el.offsetTop;
        } while(el = el.offsetParent);
      }
      //If we want the position of the gallery itself, return it
      if(el_id == id) {return {'left':left,'top':top};}
      //Otherwise, get position of element relative to gallery
      else {
        var gPos = getPos(j_gallery[0]);
        var gLeft = gPos.left;
        var gTop = gPos.top;
        
        return {'left':left-gLeft,'top':top-gTop};
      }
    };
    
  //Add onclick event to each frame
    function enableFrameClicking() {
      j_frames.each(function(i){
        //If there isn't a link in this frame, set up frame to slide on click
        //Frames with links will handle themselves
        if($('a',this).length==0) {
          $(this).click(function(){
            if(iterator!=i) {
              $(document).stopTime("transition");
              showItem(i);
              iterator = i;
              if(!paused) {
                $(document).everyTime(opts.transition_interval,"transition",function(){
                  showNextItem();
                });
              }
            }
          });
        }
      });
    };
    
  //Construct gallery panels from '.panel' <div>s
    function buildPanels() {
      //If there are panel captions, add overlay divs
      j_panels.each(function(i){
          if($('.panel-overlay',this).length>0) {
          $(this).append('<div class="overlay-background"></div>'); 
        }
        });
      if(!opts.show_filmstrip) {
        //Add navigation buttons
        $('<img />').addClass('nav-next').attr('src',theme_path+opts.nav_theme+'/next.gif').appendTo(j_gallery).css({
          'position':'absolute',
          'zIndex':'1100',
          'cursor':'pointer',
          'top':((opts.panel_height-22)/2)+gallery_padding+'px',
          'right':'10px',
          'display':'none'
        }).click(showNextItem);
        $('<img />').addClass('nav-prev').attr('src',theme_path+opts.nav_theme+'/prev.gif').appendTo(j_gallery).css({
          'position':'absolute',
          'zIndex':'1100',
          'cursor':'pointer',
          'top':((opts.panel_height-22)/2)+gallery_padding+'px',
          'left':'10px',
          'display':'none'
        }).click(showPrevItem);
        
        $('<img />').addClass('nav-next-overlay').attr('src',theme_path+opts.nav_theme+'/panel-nav-next.gif').appendTo(j_gallery).css({
          'position':'absolute',
          'zIndex':'1099',
          'top':((opts.panel_height-22)/2)+gallery_padding-10+'px',
          'right':'0',
          'display':'none',
          'cursor':'pointer',
          'opacity':0.75
        }).click(showNextItem);
        
        $('<img />').addClass('nav-prev-overlay').attr('src',theme_path+opts.nav_theme+'/panel-nav-prev.gif').appendTo(j_gallery).css({
          'position':'absolute',
          'zIndex':'1099',
          'top':((opts.panel_height-22)/2)+gallery_padding-10+'px',
          'left':'0',
          'display':'none',
          'cursor':'pointer',
          'opacity':0.75
        }).click(showPrevItem);
      }
      j_panels.each(function(i){
        $(this).css({
          'width':(opts.panel_width-extraWidth(j_panels))+'px',
          'height':(opts.panel_height-extraHeight(j_panels))+'px',
          'position':'absolute',
          'overflow':'hidden',
          'display':'none'
        });
        switch(opts.filmstrip_position) {
          case 'top': $(this).css({
                  'top':strip_height+Math.max(gallery_padding,filmstrip_margin)+'px',
                  'left':gallery_padding+'px'
                }); break;
          case 'left': $(this).css({
                  'top':gallery_padding+'px',
                  'left':strip_width+Math.max(gallery_padding,filmstrip_margin)+'px'
                 }); break;
          default: $(this).css({'top':gallery_padding+'px','left':gallery_padding+'px'}); break;
        }
      });
      $('.panel-overlay',j_panels).css({
        'position':'absolute',
        'zIndex':'999',
        'width':(opts.panel_width-extraWidth($('.panel-overlay',j_panels)))+'px',
        'left':'0'
      });
      $('.overlay-background',j_panels).css({
        'position':'absolute',
        'zIndex':'998',
        'width':opts.panel_width+'px',
        'left':'0',
        'opacity':opts.overlay_opacity
      });
      if(opts.overlay_position=='top') {
        $('.panel-overlay',j_panels).css('top',0);
        $('.overlay-background',j_panels).css('top',0);
      } else {
        $('.panel-overlay',j_panels).css('bottom',0);
        $('.overlay-background',j_panels).css('bottom',0);
      }
      
      $('.panel iframe',j_panels).css({
        'width':opts.panel_width+'px',
        'height':opts.panel_height+'px',
        'border':'0'
      });
      if(scale_panel_images) {
        $('img',j_panels).each(function(i){
          $(this).css({
            'height':panel_img_scale[i%item_count]*img_h[i%item_count],
            'width':panel_img_scale[i%item_count]*img_w[i%item_count],
            'position':'relative',
            'top':(opts.panel_height-(panel_img_scale[i%item_count]*img_h[i%item_count]))/2+'px',
            'left':(opts.panel_width-(panel_img_scale[i%item_count]*img_w[i%item_count]))/2+'px'
          });
        });
      }
    };
    
  //Construct filmstrip from '.filmstrip' <ul>
    function buildFilmstrip() {
      //Add wrapper to filmstrip to hide extra frames
      j_filmstrip.wrap('<div class="strip_wrapper"></div>');
      if(slide_method=='strip') {
        j_frames.clone().appendTo(j_filmstrip);
        j_frames.clone().appendTo(j_filmstrip);
        j_frames = $('li',j_filmstrip);
      }
      //If captions are enabled, add caption divs and fill with the image titles
      if(opts.show_captions) {
        j_frames.append('<div class="caption"></div>').each(function(i){
          $(this).find('.caption').html($(this).find('img').attr('title')); 
          //$(this).find('.caption').html(i);   
        });
      }
      j_filmstrip.css({
        'listStyle':'none',
        'margin':'0',
        'padding':'0',
        'width':strip_width+'px',
        'position':'absolute',
        'zIndex':'900',
        'top':(filmstrip_orientation=='vertical' && slide_method=='strip'?-((f_frame_height+opts.frame_gap)*iterator):0)+'px',
        'left':(filmstrip_orientation=='horizontal' && slide_method=='strip'?-((f_frame_width+opts.frame_gap)*iterator):0)+'px',
        'height':strip_height+'px'
      });
      j_frames.css({
        'float':'left',
        'position':'relative',
        'height':f_frame_height+(opts.show_captions?frame_caption_size:0)+'px',
        'width':f_frame_width+'px',
        'zIndex':'901',
        'padding':'0',
        'cursor':'pointer'
      });
      switch(opts.filmstrip_position) {
        case 'top': j_frames.css({
                'marginBottom':filmstrip_margin+'px',
                'marginRight':opts.frame_gap+'px'
              }); break;
        case 'bottom': j_frames.css({
                'marginTop':filmstrip_margin+'px',
                'marginRight':opts.frame_gap+'px'
              }); break;
        case 'left': j_frames.css({
                'marginRight':filmstrip_margin+'px',
                'marginBottom':opts.frame_gap+'px'
              }); break;
        case 'right': j_frames.css({
                'marginLeft':filmstrip_margin+'px',
                'marginBottom':opts.frame_gap+'px'
              }); break;
      }
      $('.img_wrap',j_frames).each(function(i){                 
        $(this).css({
          'height':Math.min(opts.frame_height,img_h[i%item_count]*frame_img_scale[i%item_count])+'px',
          'width':Math.min(opts.frame_width,img_w[i%item_count]*frame_img_scale[i%item_count])+'px',
          'position':'relative',
          'top':(opts.show_captions && opts.filmstrip_position=='top'?frame_caption_size:0)+Math.max(0,(opts.frame_height-(frame_img_scale[i%item_count]*img_h[i%item_count]))/2)+'px',
          'left':Math.max(0,(opts.frame_width-(frame_img_scale[i%item_count]*img_w[i%item_count]))/2)+'px',
          'overflow':'hidden'
        });
      });
      $('img',j_frames).each(function(i){
        $(this).css({
          'opacity':opts.frame_opacity,
          'height':img_h[i%item_count]*frame_img_scale[i%item_count]+'px',
          'width':img_w[i%item_count]*frame_img_scale[i%item_count]+'px',
          'position':'relative',
          'top':Math.min(0,(opts.frame_height-(frame_img_scale[i%item_count]*img_h[i%item_count]))/2)+'px',
          'left':Math.min(0,(opts.frame_width-(frame_img_scale[i%item_count]*img_w[i%item_count]))/2)+'px'
  
        }).mouseover(function(){
          $(this).stop().animate({'opacity':1.0},300);
        }).mouseout(function(){
          //Don't fade out current frame on mouseout
          if(!$(this).parent().parent().hasClass('current')) $(this).stop().animate({'opacity':opts.frame_opacity},300);
        });
      });
      $('.strip_wrapper',j_gallery).css({
        'position':'absolute',
        'overflow':'hidden'
      });
      if(filmstrip_orientation=='horizontal') {
        $('.strip_wrapper',j_gallery).css({
          'top':(opts.filmstrip_position=='top'?Math.max(gallery_padding,filmstrip_margin)+'px':opts.panel_height+gallery_padding+'px'),
          'left':((gallery_width-wrapper_width)/2)+gallery_padding+'px',
          'width':wrapper_width+'px',
          'height':strip_height+'px'
        });
      } else {
        $('.strip_wrapper',j_gallery).css({
          'left':(opts.filmstrip_position=='left'?Math.max(gallery_padding,filmstrip_margin)+'px':opts.panel_width+gallery_padding+'px'),
          'top':Math.max(gallery_padding,opts.frame_gap)+'px',
          'width':strip_width+'px',
          'height':wrapper_height+'px'
        });
      }
      $('.caption',j_gallery).css({
        'position':'absolute',
        'top':(opts.filmstrip_position=='bottom'?f_frame_height:0)+'px',
        'left':'0',
        'margin':'0',
        'width':f_frame_width+'px',
        'padding':'0',
        'height':frame_caption_size+'px',
        'overflow':'hidden',
        'lineHeight':frame_caption_size+'px'
      });
      var pointer = $('<div></div>');
      pointer.addClass('pointer').appendTo(j_gallery).css({
         'position':'absolute',
         'zIndex':'1000',
         'width':'0px',
         'fontSize':'0px',
         'lineHeight':'0%',
         'borderTopWidth':pointer_height+'px',
         'borderRightWidth':(pointer_width/2)+'px',
         'borderBottomWidth':pointer_height+'px',
         'borderLeftWidth':(pointer_width/2)+'px',
         'borderStyle':'solid'
      });
      
      //For IE6, use predefined color string in place of transparent (see stylesheet)
      var transColor = $.browser.msie && $.browser.version.substr(0,1)=='6' ? 'pink' : 'transparent'
      
      if(!opts.show_panels) { pointer.css('borderColor',transColor); }
    
        switch(opts.filmstrip_position) {
          case 'top': pointer.css({
                  'bottom':(opts.panel_height-(pointer_height*2)+gallery_padding+filmstrip_margin)+'px',
                  'left':((gallery_width-wrapper_width)/2)+(slide_method=='strip'?0:((f_frame_width+opts.frame_gap)*iterator))+((f_frame_width/2)-(pointer_width/2))+gallery_padding+'px',
                  'borderBottomColor':transColor,
                  'borderRightColor':transColor,
                  'borderLeftColor':transColor
                }); break;
          case 'bottom': pointer.css({
                    'top':(opts.panel_height-(pointer_height*2)+gallery_padding+filmstrip_margin)+'px',
                    'left':((gallery_width-wrapper_width)/2)+(slide_method=='strip'?0:((f_frame_width+opts.frame_gap)*iterator))+((f_frame_width/2)-(pointer_width/2))+gallery_padding+'px',
                    'borderTopColor':transColor,
                    'borderRightColor':transColor,
                    'borderLeftColor':transColor
                  }); break;
          case 'left': pointer.css({
                  'right':(opts.panel_width-pointer_width+gallery_padding+filmstrip_margin)+'px',
                  'top':(f_frame_height/2)-(pointer_height)+(slide_method=='strip'?0:((f_frame_height+opts.frame_gap)*iterator))+gallery_padding+'px',
                  'borderBottomColor':transColor,
                  'borderRightColor':transColor,
                  'borderTopColor':transColor
                }); break;
          case 'right': pointer.css({
                  'left':(opts.panel_width-pointer_width+gallery_padding+filmstrip_margin)+'px',
                  'top':(f_frame_height/2)-(pointer_height)+(slide_method=='strip'?0:((f_frame_height+opts.frame_gap)*iterator))+gallery_padding+'px',
                  'borderBottomColor':transColor,
                  'borderLeftColor':transColor,
                  'borderTopColor':transColor
                }); break;
        }
    
      j_pointer = $('.pointer',j_gallery);
      
      //Add navigation buttons
      var navNext = $('<img />');
      navNext.addClass('nav-next').attr('src',theme_path+opts.nav_theme+'/next.gif').appendTo(j_gallery).css({
        'position':'absolute',
        'cursor':'pointer'
      }).click(showNextItem);
      var navPrev = $('<img />');
      navPrev.addClass('nav-prev').attr('src',theme_path+opts.nav_theme+'/prev.gif').appendTo(j_gallery).css({
        'position':'absolute',
        'cursor':'pointer'
      }).click(showPrevItem);
      if(filmstrip_orientation=='horizontal') {
        navNext.css({          
          'top':(opts.filmstrip_position=='top'?Math.max(gallery_padding,filmstrip_margin):opts.panel_height+filmstrip_margin+gallery_padding)+((f_frame_height-22)/2)+'px',
          'right':((gallery_width+(gallery_padding*2))/2)-(wrapper_width/2)-opts.frame_gap-22+'px'
        });
        navPrev.css({
          'top':(opts.filmstrip_position=='top'?Math.max(gallery_padding,filmstrip_margin):opts.panel_height+filmstrip_margin+gallery_padding)+((f_frame_height-22)/2)+'px',
          'left':((gallery_width+(gallery_padding*2))/2)-(wrapper_width/2)-opts.frame_gap-22+'px'
         });
      } else {
        navNext.css({          
          'left':(opts.filmstrip_position=='left'?Math.max(gallery_padding,filmstrip_margin):opts.panel_width+filmstrip_margin+gallery_padding)+((f_frame_width-22)/2)+13+'px',
          'top':wrapper_height+(Math.max(gallery_padding,opts.frame_gap)*2)+'px'
        });
        navPrev.css({
          'left':(opts.filmstrip_position=='left'?Math.max(gallery_padding,filmstrip_margin):opts.panel_width+filmstrip_margin+gallery_padding)+((f_frame_width-22)/2)-13+'px',
          'top':wrapper_height+(Math.max(gallery_padding,opts.frame_gap)*2)+'px'
        });
      }
    };
    
  //Check mouse to see if it is within the borders of the panel
  //More reliable than 'mouseover' event when elements overlay the panel
    function mouseIsOverGallery(x,y) {    
      var pos = getPos(j_gallery[0]);
      var top = pos.top;
      var left = pos.left;
      return x > left && x < left+gallery_width+(filmstrip_orientation=='horizontal'?(gallery_padding*2):gallery_padding+Math.max(gallery_padding,filmstrip_margin)) && y > top && y < top+gallery_height+(filmstrip_orientation=='vertical'?(gallery_padding*2):gallery_padding+Math.max(gallery_padding,filmstrip_margin));       
    };
    
    function getInt(i) {
      i = parseInt(i,10);
      if(isNaN(i)) { i = 0; }
      return i; 
    }
          
    function buildGallery() {
      //alert("buildGallery");
      var gallery_images = opts.show_filmstrip?$('img',j_frames):$('img',j_panels);
      
      gallery_images.each(function(i){
        img_h[i] = this.height;
        img_w[i] = this.width;
        if(opts.frame_scale=='nocrop') {
          frame_img_scale[i] = Math.min(opts.frame_height/img_h[i],opts.frame_width/img_w[i]);
        } else {
          frame_img_scale[i] = Math.max(opts.frame_height/img_h[i],opts.frame_width/img_w[i]);
        }
        
        if(opts.panel_scale=='nocrop') {
          panel_img_scale[i] = Math.min(opts.panel_height/img_h[i],opts.panel_width/img_w[i]);
        } else {
          panel_img_scale[i] = Math.max(opts.panel_height/img_h[i],opts.panel_width/img_w[i]);
        }
      });
  
  /************************************************/
  /*  Apply CSS Styles              */
  /************************************************/
      j_gallery.css({
        'position':'relative',
        'width':gallery_width+(filmstrip_orientation=='horizontal'?(gallery_padding*2):gallery_padding+Math.max(gallery_padding,filmstrip_margin))+'px',
        'height':gallery_height+(filmstrip_orientation=='vertical'?(gallery_padding*2):gallery_padding+Math.max(gallery_padding,filmstrip_margin))+'px'
      });
  
  /************************************************/
  /*  Build filmstrip and/or panels       */
  /************************************************/
      if(opts.show_filmstrip) {
        buildFilmstrip();
        enableFrameClicking();
      }
      if(opts.show_panels) {
        buildPanels();
      }

  /************************************************/
  /*  Add events to various elements        */
  /************************************************/
      if(opts.pause_on_hover || (opts.show_panels && !opts.show_filmstrip)) {
        $().mousemove(function(e){              
          if(mouseIsOverGallery(e.pageX,e.pageY)) {
            if(opts.pause_on_hover) {
              if(!paused) {
                $(document).oneTime(500,"animation_pause",function(){
                  $(document).stopTime("transition");
                  paused=true;
                });
              }
            }
            if(opts.show_panels && !opts.show_filmstrip && !panel_nav_displayed) {
              $('.nav-next-overlay').fadeIn('fast');
              $('.nav-prev-overlay').fadeIn('fast');
              $('.nav-next',j_gallery).fadeIn('fast');
              $('.nav-prev',j_gallery).fadeIn('fast');
              panel_nav_displayed = true;
            }
          } else {
            if(opts.pause_on_hover) {
              $(document).stopTime("animation_pause");
              if(paused) {
                $(document).everyTime(opts.transition_interval,"transition",function(){
                  showNextItem();
                });
                paused = false;
              }
            }
            if(opts.show_panels && !opts.show_filmstrip && panel_nav_displayed) {
              $('.nav-next-overlay').fadeOut('fast');
              $('.nav-prev-overlay').fadeOut('fast');
              $('.nav-next',j_gallery).fadeOut('fast');
              $('.nav-prev',j_gallery).fadeOut('fast');
              panel_nav_displayed = false;
            }
          }
        });
      }
  
  
  /****************************************************************/
  /*  Initiate Automated Animation                */
  /****************************************************************/
      
      //Hide loading box
      j_filmstrip.css('visibility','visible');
      j_gallery.css('visibility','visible');
      $('.loader',j_gallery).fadeOut('1000',function(){
        //Show the 'first' panel
        showItem(iterator);
        //If we have more than one item, begin automated transitions
        if(item_count > 1) {
          $(document).everyTime(opts.transition_interval,"transition",function(){
            showNextItem();
          });
        } 
      }); 
    }
    
/************************************************/
/*  Main Plugin Code              */
/************************************************/
    return this.each(function() {
      //alert (this);
      //Hide <ul>
      $(this).css('visibility','hidden');
      
      //Wrap <ul> in <div> and transfer ID to container <div>
      //Assign filmstrip class to <ul>
      $(this).wrap("<div></div>");
      j_gallery = $(this).parent();


      // phloc changed
      // see if images are already loaded
      var declared_items = $('li',j_gallery);
      $('img',declared_items).each(function (i)
      {
        //alert (this.width + "x" + this.height);
        if (this.height < 25 || this.width < 25)
        {
          throw ("image not loaded");
        }
      });



      j_gallery.css('visibility','hidden').attr('id',$(this).attr('id')).addClass('gallery');
      $(this).removeAttr('id').addClass('filmstrip');
      
      
      
      
      $(document).stopTime("transition");
      $(document).stopTime("animation_pause");
      
      id = j_gallery.attr('id');
      
      //If there is no defined panel content, we will scale panel images
      scale_panel_images = $('.panel-content',j_gallery).length==0;
      
      //Define dimensions of pointer <div>
      pointer_height = opts.pointer_size;
      pointer_width = opts.pointer_size*2;
      
      //Determine filmstrip orientation (vertical or horizontal)
      //Do not show captions on vertical filmstrips
      filmstrip_orientation = (opts.filmstrip_position=='top'||opts.filmstrip_position=='bottom'?'horizontal':'vertical');
      if(filmstrip_orientation=='vertical') opts.show_captions = false;
      
      //Determine path between current page and plugin images
      //Scan script tags and look for path to GalleryView plugin
      $('script').each(function(i){
        var s = $(this);
        if(s.attr('src') && s.attr('src').match(/jquery\.galleryview/)){
          loader_path = s.attr('src').split('jquery.galleryview')[0];
          theme_path = s.attr('src').split('jquery.galleryview')[0]+'themes/';  
        }
      });
      
      j_filmstrip = $('.filmstrip',j_gallery);
      j_frames = $('li',j_filmstrip);
      
      
      
      j_frames.addClass('frame');
      
      //If the user wants panels, generate them using the filmstrip images
      if(opts.show_panels) {
        for(i=j_frames.length-1;i>=0;i--) {
          if(j_frames.eq(i).find('.panel-content').length>0) {
            j_frames.eq(i).find('.panel-content').remove().prependTo(j_gallery).addClass('panel');
          } else {
            p = $('<div>');
            p.addClass('panel');
            im = $('<img />');
            im.attr('src',j_frames.eq(i).find('img').eq(0).attr('src')).appendTo(p);
            p.prependTo(j_gallery);
            j_frames.eq(i).find('.panel-overlay').remove().appendTo(p);
          }
        }
      } else { 
        $('.panel-overlay',j_frames).remove(); 
        $('.panel-content',j_frames).remove();
      }
      
      //If the user doesn't want a filmstrip, delete it
      if(!opts.show_filmstrip) { j_filmstrip.remove(); }
      else {
        //Wrap the frame images (and links, if applicable) in container divs
        //These divs will handle cropping and zooming of the images
        j_frames.each(function(i){
          if($(this).find('a').length>0) {
            $(this).find('a').wrap('<div class="img_wrap"></div>');
          } else {
            $(this).find('img').wrap('<div class="img_wrap"></div>'); 
          }
        });
        j_frame_img_wrappers = $('.img_wrap',j_frames);
      }
      
      j_panels = $('.panel',j_gallery);
      
      if(!opts.show_panels) {
        opts.panel_height = 0;
        opts.panel_width = 0;
      }
      
      
      //Determine final frame dimensions, accounting for user-added padding and border
      f_frame_width = opts.frame_width+extraWidth(j_frame_img_wrappers);
      f_frame_height = opts.frame_height+extraHeight(j_frame_img_wrappers);
      
      //Number of frames in filmstrip
      item_count = opts.show_panels?j_panels.length:j_frames.length;
      
      //Number of frames that can display within the gallery block
      //64 = width of block for navigation button * 2 + 20
      if(filmstrip_orientation=='horizontal') {
        strip_size = opts.show_panels?Math.floor((opts.panel_width-((opts.frame_gap+22)*2))/(f_frame_width+opts.frame_gap)):Math.min(item_count,opts.filmstrip_size); 
      } else {
        strip_size = opts.show_panels?Math.floor((opts.panel_height-(opts.frame_gap+22))/(f_frame_height+opts.frame_gap)):Math.min(item_count,opts.filmstrip_size);
      }
      
      /************************************************/
      /*  Determine transition method for filmstrip */
      /************************************************/
          //If more items than strip size, slide filmstrip
          //Otherwise, slide pointer
          if(strip_size >= item_count) {
            slide_method = 'pointer';
            strip_size = item_count;
          }
          else {slide_method = 'strip';}
          
          iterator = (strip_size<item_count?item_count:0)+opts.start_frame-1;
      
      /************************************************/
      /*  Determine dimensions of various elements  */
      /************************************************/
          filmstrip_margin = (opts.show_panels?getInt(j_filmstrip.css('marginTop')):0);
          j_filmstrip.css('margin','0px');
          
          if(filmstrip_orientation=='horizontal') {
            //Width of gallery block
            gallery_width = opts.show_panels?opts.panel_width:(strip_size*(f_frame_width+opts.frame_gap))+44+opts.frame_gap;
            
            //Height of gallery block = screen + filmstrip + captions (optional)
            gallery_height = (opts.show_panels?opts.panel_height:0)+(opts.show_filmstrip?f_frame_height+filmstrip_margin+(opts.show_captions?frame_caption_size:0):0);
          } else {
            //Width of gallery block
            gallery_height = opts.show_panels?opts.panel_height:(strip_size*(f_frame_height+opts.frame_gap))+22;
            
            //Height of gallery block = screen + filmstrip + captions (optional)
            gallery_width = (opts.show_panels?opts.panel_width:0)+(opts.show_filmstrip?f_frame_width+filmstrip_margin:0);
          }
          
          
          
          //Width of filmstrip
          if(filmstrip_orientation=='horizontal') {
            if(slide_method == 'pointer') {strip_width = (f_frame_width*item_count)+(opts.frame_gap*(item_count));}
            else {strip_width = (f_frame_width*item_count*3)+(opts.frame_gap*(item_count*3));}
          } else {
            strip_width = (f_frame_width+filmstrip_margin);
          }
          
          if(filmstrip_orientation=='horizontal') {
            strip_height = (f_frame_height+filmstrip_margin+(opts.show_captions?frame_caption_size:0)); 
          } else {
            if(slide_method == 'pointer') {strip_height = (f_frame_height*item_count+opts.frame_gap*(item_count));}
            else {strip_height = (f_frame_height*item_count*3)+(opts.frame_gap*(item_count*3));}
          }
          
          //Width of filmstrip wrapper (to hide overflow)
          wrapper_width = ((strip_size*f_frame_width)+((strip_size-1)*opts.frame_gap));
          wrapper_height = ((strip_size*f_frame_height)+((strip_size-1)*opts.frame_gap));

          
          gallery_padding = getInt(j_gallery.css('paddingTop'));
          j_gallery.css('padding','0px');
      /********************************************************/
      /*  PLACE LOADING BOX OVER GALLERY UNTIL IMAGES LOAD  */
      /********************************************************/
          galleryPos = getPos(j_gallery[0]);
          $('<div>').addClass('loader').css({
            'position':'absolute',
            'zIndex':'32666',
            'opacity':1,
            'top':'0px',
            'left':'0px',
            'width':gallery_width+(filmstrip_orientation=='horizontal'?(gallery_padding*2):gallery_padding+Math.max(gallery_padding,filmstrip_margin))+'px',
            'height':gallery_height+(filmstrip_orientation=='vertical'?(gallery_padding*2):gallery_padding+Math.max(gallery_padding,filmstrip_margin))+'px'
          }).appendTo(j_gallery);
          
      
      // phloc changed
      if(!window_loaded && opts.wait_for_window) 
      {
        $(window).load(function(){
          window_loaded = true;
          buildGallery();
        });
      } else {
        buildGallery();
      }
          
    });
  },
  
  $.fn.galleryView.defaults = {
    
    // phloc changed
    wait_for_window: true,
    show_panels: true,
    show_filmstrip: true,
    
    panel_width: 600,
    panel_height: 400,
    frame_width: 60,
    frame_height: 40,
    
    start_frame: 1,
    filmstrip_size: 3,
    transition_speed: 800,
    transition_interval: 4000,
    
    overlay_opacity: 0.7,
    frame_opacity: 0.3,
    
    pointer_size: 8,
    
    nav_theme: 'dark',
    easing: 'swing',
    
    filmstrip_position: 'bottom',
    overlay_position: 'bottom',
    
    panel_scale: 'nocrop',
    frame_scale: 'crop',
    
    frame_gap: 5,
    
    show_captions: false,
    fade_panels: true,
    pause_on_hover: false
  };
})(jQuery);