/*
**
**    GalleryView - jQuery Content Gallery Plugin
**    Author:         Jack Anderson
**    Version:        2.1 (March 14, 2010)
**    
**    Please use this development script if you intend to make changes to the
**    plugin code.  For production sites, please use jquery.galleryview-2.1-pack.js.
**    
**    See README.txt for instructions on how to markup your HTML
**
**    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;        // INT - Currently visible panel/frame
        var item_count = 0;        // INT - Total number of panels/frames
        var slide_method;        // STRING - indicator to slide entire filmstrip or just the pointer ('strip','pointer')
        var theme_path;            // STRING - relative path to theme directory
        var paused = false;        // BOOLEAN - flag to indicate whether automated transitions are active
        
    // 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 = {};
        var panel_img_scale = {};
        var img_h = {};
        var img_w = {};
        
    // 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 Functions
*/

    /*
    **    showItem(int)
    **        Transition from current frame to frame i (1-based index)
    */
        function showItem(i) {
            // Disable next/prev buttons until transition is complete
            // This prevents overlapping of animations
            $('.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');
            
            if(opts.show_filmstrip) {
                // Fade out all frames
                j_frames.removeClass('current').find('img').stop().animate({
                    'opacity':opts.frame_opacity
                },opts.transition_speed);
                // Fade in target frame
                j_frames.eq(i).addClass('current').find('img').stop().animate({
                    'opacity':1.0
                },opts.transition_speed);
            }
            
            //If necessary, 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 no filmstrip exists, re-bind click events to navigation buttons
                    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();
                    var distance;
                    var diststr;
                    if(filmstrip_orientation=='horizontal') {
                        // Determine distance between pointer (eventual destination) and target frame
                        distance = getPos(j_frames[i]).left - (getPos(j_pointer[0]).left+(pointer_width/2)-(f_frame_width/2));
                        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(){
                            var old_i = i;
                            // After transition is complete, shift filmstrip so that a sufficient number of frames
                            // remain on either side of the visible filmstrip
                            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 panels are not set to fade in/out, simply hide all panels and show the target panel
                            if(!opts.fade_panels) {
                                j_panels.hide().eq(i%item_count).show();
                            }
                            
                            // Once animation is complete, re-bind click events to navigation buttons
                            $('.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 { // filmstrip_orientation == 'vertical'
                        //Determine distance between pointer (eventual destination) and target frame
                        distance = getPos(j_frames[i]).top - (getPos(j_pointer[0]).top+(pointer_height)-(f_frame_height/2));
                        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(){
                            // After transition is complete, shift filmstrip so that a sufficient number of frames
                            // remain on either side of the visible filmstrip
                            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 panels are not set to fade in/out, simply hide all panels and show the target panel
                            if(!opts.fade_panels) {
                                j_panels.hide().eq(i%item_count).show();
                            }
                            
                            // Once animation is complete, re-bind click events to navigation buttons
                            $('.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 screen 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();
                        });
                    }
                }
            
            }
        };
        
    /*
    **    extraWidth(jQuery element)
    **        Return the combined width of the border and padding to the elements left and right.
    **        If the border is non-numerical, assume zero (not ideal, will fix later)
    **        RETURNS - int
    */
        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;
        };
        
    /*
    **    extraHeight(jQuery element)
    **        Return the combined height of the border and padding above and below the element
    **        If the border is non-numerical, assume zero (not ideal, will fix later)
    **        RETURN - int
    */
        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;
        };
    
    /*
    **    showNextItem()
    **        Transition from current frame to next frame
    */
        function showNextItem() {
            
            // Cancel any transition timers until we have completed this function
            $(document).stopTime("transition");
            if(++iterator==j_frames.length) {iterator=0;}
            // We've already written the code to transition to an arbitrary panel/frame, so use it
            showItem(iterator);
            // If automated transitions haven't been cancelled by an option or paused on hover, re-enable them
            if(!paused) {
                $(document).everyTime(opts.transition_interval,"transition",function(){
                    showNextItem();
                });
            }
        };
        
    /*
    **    showPrevItem()
    **        Transition from current frame to previous frame
    */
        function showPrevItem() {
            // Cancel any transition timers until we have completed this function
            $(document).stopTime("transition");
            if(--iterator<0) {iterator = item_count-1;}
            // We've already written the code to transition to an arbitrary panel/frame, so use it
            showItem(iterator);
            // If automated transitions haven't been cancelled by an option or paused on hover, re-enable them
            if(!paused) {
                $(document).everyTime(opts.transition_interval,"transition",function(){
                    showNextItem();
                });
            }
        };
        
    /*
    **    getPos(jQuery element
    **        Calculate position of an element relative to top/left corner of gallery
    **        If the gallery bounding box itself is passed to the function, calculate position of gallery relative to top/left corner of browser window
    **         RETURNS - JSON {left: int, top: int}
    */
        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};
            }
        };
    
    /*
    **    enableFrameClicking()
    **        Add an onclick event handler to each frame
    **        Exception: if a frame has an anchor tag, do not add an onlick handler
    */
        function enableFrameClicking() {
            j_frames.each(function(i){
                if($('a',this).length==0) {
                    $(this).click(function(){
                        // Prevent transitioning to the current frame (unnecessary)
                        if(iterator!=i) {
                            $(document).stopTime("transition");
                            showItem(i);
                            iterator = i;
                            if(!paused) {
                                $(document).everyTime(opts.transition_interval,"transition",function(){
                                    showNextItem();
                                });
                            }
                        }
                    });
                }
            });
        };
    
    /*
    **    buildPanels()
    **        Construct gallery panels from <div class="panel"> elements
    **        NOTE - These DIVs are generated automatically from the content of the UL passed to the plugin
    */
        function buildPanels() {
            // If panel overlay content exists, add the necessary overlay background DIV
            // The overlay content and background are separate elements so the background's opacity isn't inherited by the content
            j_panels.each(function(i){
                   if($('.panel-overlay',this).length>0) {
                    $(this).append('<div class="overlay-background"></div>');    
                }
               });
            // If there is no filmstrip in this gallery, add navigation buttons to the panel itself
            if(!opts.show_filmstrip) {
                $('<img />').addClass('nav-next').addClass('no_flimstrip').attr('src',theme_path+opts.nav_theme+'/next.png').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').addClass('no_flimstrip').attr('src',theme_path+opts.nav_theme+'/prev.png').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.png').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.png').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);
            }
            // Set the height and width of each panel, and position it appropriately within the gallery
            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'
                });
                if (!opts.filmstripAsNumbers) {
                    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;
                    }
                } else {
                    $(this).css({'top':gallery_padding+'px','left':gallery_padding+'px'});
                }
            });
            // Position each panel overlay within panel
            $('.panel-overlay',j_panels).css({
                'position':'absolute',
                'zIndex':'999',
                'width':(opts.panel_width-extraWidth($('.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 panel images have to be scaled to fit within frame, do so and position them accordingly
            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'
                    });
                });
            }
        };
    
    /*
    **    buildFilmstrip()
    **        Construct filmstrip from <ul class="filmstrip"> element
    **        NOTE - 'filmstrip' class is automatically added to UL passed to plugin
    */
        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 (!opts.filmstripAsNumbers) {
    		// If captions are enabled, add caption DIV to each frame 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);        
    	            });
    	        }
                    // Position the filmstrip within the gallery
                    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'
                    });
                    // Set frame margins based on user options and position of filmstrip within gallery
                    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;
                    }
                    // Apply styling to individual image wrappers. These will eventually hide overflow in the case of cropped filmstrip images
                    $('.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'
                        });
                    });
                    // Scale each filmstrip image if necessary and position it within the image wrapper
                    $('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); }
                        });
                    });
                    // Set overflow of filmstrip wrapper to hidden so as to hide frames that don't fit within the gallery
                    $('.strip_wrapper',j_gallery).css({
                        'position':'absolute',
                        'overflow':'hidden'
                    });
                    // Position filmstrip within gallery based on user options
                    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'
                        });
                    }
                    // Style frame captions
                    $('.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'
                    });
                    // Create pointer for current frame
                    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 (IE6 bug fix, see stylesheet)
                    var transColor = $.browser.msie && $.browser.version.substr(0,1)=='6' ? 'pink' : 'transparent';
                    
                    // If there are no panels, make pointer transparent (nothing to point to)
                    // This is not the optimal solution, but we need the pointer to exist as a reference for transition animations
                    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.png').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.png').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-36)/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-36)/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'
                        });
                    }
    	    } else  {
    	        $('img',j_frames).each(function(i){	
    	            $(this).parent().html('<span>' + ((i%item_count) + 1) + '</span>');
    	        });
    	        
                var pointer = $('<div></div>');
                pointer.addClass('pointer').appendTo(j_gallery);
                j_pointer = $('.pointer',j_gallery);
                j_filmstrip.css({
                    'listStyle':'none',
                    'position':'absolute'
                });
            }
        };
    
    /*
    **    mouseIsOverGallery(int,int)
    **        Check to see if mouse coordinates lie within borders of gallery
    **        This is a more reliable method than using the mouseover event
    **        RETURN - boolean
    */
        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));                
        };
    
    /*
    **    getInt(string)
    **        Parse a string to obtain the integer value contained
    **        If the string contains no number, return zero
    **        RETURN - int
    */
        function getInt(i) {
            i = parseInt(i,10);
            if(isNaN(i)) { i = 0; }
            return i;    
        };
    
    /*
    **    buildGallery()
    **        Construct HTML and CSS for the gallery, based on user options
    */
        function buildGallery() {
            var gallery_images = opts.show_filmstrip?$('img',j_frames):$('img',j_panels);
            // For each image in the gallery, add its original dimensions and scaled dimensions to the appropriate arrays for later reference
            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]);
                }
            });
            
            // Size gallery based on position of filmstrip
            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 if necessary
            if(opts.show_filmstrip) {
                buildFilmstrip();
                enableFrameClicking();
            }
            // Build panels if necessary
            if(opts.show_panels) {
                buildPanels();
            }
            
            // If user opts to pause on hover, or no filmstrip exists, add some mouseover functionality
            if(opts.pause_on_hover || (opts.show_panels && !opts.show_filmstrip)) {
                $(document).mousemove(function(e){
                    if(mouseIsOverGallery(e.pageX,e.pageY)) {
                        // If the user opts to pause on hover, kill automated transitions
                        if(opts.pause_on_hover) {
                            if(!paused) {
                                // Pause slideshow in 500ms
                                $(document).oneTime(500,"animation_pause",function(){
                                    $(document).stopTime("transition");
                                    paused=true;
                                });
                            }
                        }
                        // Display panel navigation on mouseover
                        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 the mouse leaves the gallery, stop the pause timer and restart automated transitions
                        if(opts.pause_on_hover) {
                            $(document).stopTime("animation_pause");
                            if(paused) {
                                $(document).everyTime(opts.transition_interval,"transition",function(){
                                    showNextItem();
                                });
                                paused = false;
                            }
                        }
                        // Hide panel navigation
                        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;
                        }
                    }
                });
            }
            
            // Hide loading box and display gallery
            j_filmstrip.css('visibility','visible');
            j_gallery.css('visibility','visible');
            $('.loader',j_gallery).fadeOut('1000',function(){
                // Show the 'first' panel (set by opts.start_frame)
                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() {
            //Hide the unstyled UL until we've created the gallery
            $(this).css('visibility','hidden');
            
            // Wrap UL in DIV and transfer ID to container DIV
            $(this).wrap("<div></div>");
            j_gallery = $(this).parent();
            j_gallery.css('visibility','hidden').attr('id',$(this).attr('id')).addClass('gallery');
            
            // Assign filmstrip class to UL
            if (opts.filmstripAsNumbers) {
                $(this).removeAttr('id').addClass('numbers');
            }
                
            $(this).removeAttr('id').addClass('filmstrip');
            
            // If the transition or pause timers exist for any reason, stop them now.
            $(document).stopTime("transition");
            $(document).stopTime("animation_pause");
            
            // Save the id of the UL passed to the plugin
            id = j_gallery.attr('id');
            
            // If the UL does not contain any <div class="panel-content"> elements, we will scale the UL images to fill the panels
            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 (override user set option)
            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/';    
                }
            });
            
            // Assign elements to variables to minimize calls to jQuery
            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);
                        im.attr('usemap',j_frames.eq(i).find('img').eq(0).attr('usemap')).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 {
                if (opts.filmstripAsNumbers) {
                    cssclass = 'number';
                } else {
                    cssclass = 'img_wrap';
                }

                // 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="' + cssclass +'"></div>');
                    } else {
                        $(this).find('img').removeAttr('usemap').wrap('<div class="' + cssclass +'"></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 animation method for filmstrip
            // If more items than strip size, slide filmstrip
            // Otherwise, slide pointer
            if(strip_size >= item_count || opts.filmstripAsNumbers) {
                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 gallery 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);
            }
            
            if (opts.filmstripAsNumbers
                || !opts.show_filmstrip
            ) {
            	f_frame_width = 0;
            	f_frame_heigt = 0;
            	filmstrip_margin = 0;
            	strip_size = 0;
            	gallery_width = opts.panel_width;
            	gallery_height = opts.panel_height;
            }
            
            // 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 page loads            
            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);
                    
            // Don't call the buildGallery function until the window is loaded
            // NOTE - lazy way of waiting until all images are loaded, may find a better solution for future versions
            if(!window_loaded) {
                $(window).load(function(){
                    window_loaded = true;
                    buildGallery();
                });
            } else {
                buildGallery();
            }
                    
        });
    };
    
/*
**    GalleryView options and default values
*/
    $.fn.galleryView.defaults = {
        show_panels: true,                   //BOOLEAN - flag to show or hide panel portion of gallery
        show_filmstrip: true,                //BOOLEAN - flag to show or hide filmstrip portion of gallery
        filmstripAsNumbers: false,
        
        panel_width: 600,                    //INT - width of gallery panel (in pixels)
        panel_height: 400,                   //INT - height of gallery panel (in pixels)
        frame_width: 60,                     //INT - width of filmstrip frames (in pixels)
        frame_height: 40,                    //INT - width of filmstrip frames (in pixels)
        
        start_frame: 1,                      //INT - index of panel/frame to show first when gallery loads
        filmstrip_size: 3,                    
        transition_speed: 800,               //INT - duration of panel/frame transition (in milliseconds)
        transition_interval: 4000,           //INT - delay between panel/frame transitions (in milliseconds)
        
        overlay_opacity: 1,                //FLOAT - transparency for panel overlay (1.0 = opaque, 0.0 = transparent)
        frame_opacity: 0.3,                  //FLOAT - transparency of non-active frames (1.0 = opaque, 0.0 = transparent)
        
        pointer_size: 8,                     //INT - Height of frame pointer (in pixels)
        
        nav_theme: 'dark',                   //STRING - name of navigation theme to use (folder must exist within 'themes' directory)
        easing: 'swing',                     //STRING - easing method to use for animations (jQuery provides 'swing' or 'linear', more available with jQuery UI or Easing plugin)
        
        filmstrip_position: 'bottom',        //STRING - position of filmstrip within gallery (bottom, top, left, right)
        overlay_position: 'bottom',          //STRING - position of panel overlay (bottom, top, left, right)
        
        panel_scale: 'nocrop',                 //STRING - cropping option for panel images (crop = scale image and fit to aspect ratio determined by panel_width and panel_height, nocrop = scale image and preserve original aspect ratio)
        frame_scale: 'nocrop',               //STRING - cropping option for filmstrip images (same as above)
        
        frame_gap: 5,                        //INT - spacing between frames within filmstrip (in pixels)
        
        show_captions: false,                //BOOLEAN - flag to show or hide frame captions
        fade_panels: true,                   //BOOLEAN - flag to fade panels during transitions or swap instantly
        pause_on_hover: false                //BOOLEAN - flag to pause slideshow when user hovers over the gallery
    };
})(jQuery);