(function($) {


    $.fn.jshowoff = function(settings) {

        // default global vars
        var config = {
            animatePause : true,
            autoPlay : true,
            changeSpeed : 600,
            controls : false,
            controlText : {
                play :		'Play',
                pause :		'Pause',
                next :		'Next',
                previous :	'Previous'
            },
            effect : 'fade',
            hoverPause : true,
            links : true,
            speed : 3000
        };

        // merge default global variables with custom variables, modifying 'config'
        if (settings) $.extend(true, config, settings);

        // make sure speed is at least 20ms longer than changeSpeed
        if (config.speed < (config.changeSpeed+20)) {
            alert('jShowOff: Make speed at least 20ms longer than changeSpeed; the fades aren\'t always right on time.');
            return this;
        };

        // create slideshow for each matching element invoked by .jshowoff()
        this.each(function(i) {

            // declare instance variables
            var $cont = $(this);
            var gallery = $(this).children().remove();
            var timer = '';
            var counter = 0;
            var preloadedImg = [];
            var howManyInstances = $('.jshowoff').length+1;
            var uniqueClass = 'jshowoff-'+howManyInstances;
            var cssClass = config.cssClass != undefined ? config.cssClass : '';


            // set up wrapper
            $cont.css('position','relative').wrap('<div class="jshowoff '+uniqueClass+'" />');
            var $wrap = $('.'+uniqueClass);
            $wrap.css('position','relative').addClass(cssClass);

            // add first slide to wrapper
            $(gallery[0]).clone().appendTo($cont);

            // preload slide images into memory
            preloadImg();

            // add controls
            if(config.controls){
                addControls();
                if(config.autoPlay==false){
                    $('.'+uniqueClass+'-play').addClass(uniqueClass+'-paused jshowoff-paused').text(config.controlText.play);
                };
            };

            // add slide links
            if(config.links){
                addSlideLinks();
                $('.'+uniqueClass+'-slidelinks a').eq(0).addClass(uniqueClass+'-active jshowoff-active');
            };

            // pause slide rotation on hover
            if(config.hoverPause){
                $cont.hover(
                    function(){
                        if(isPlaying()) pause('hover');
                    },
                    function(){
                        if(isPlaying()) play('hover');
                    }
                    );
            };

            // determine autoPlay
            if(config.autoPlay && gallery.length>1) {
                timer = setInterval( function(){
                    play();
                }, config.speed );
            };

            // display error message if no slides present
            if(gallery.length<1){
                $('.'+uniqueClass).append('<p>For jShowOff to work, the container element must have child elements.</p>');
            };


            // utility for loading slides
            function transitionTo(gallery,index) {

                var oldCounter = counter;
                if((counter >= gallery.length) || (index >= gallery.length)) {
                    counter = 0;
                    var e2b = true;
                }
                else if((counter < 0) || (index < 0)) {
                    counter = gallery.length-1;
                    var b2e = true;
                }
                else {
                    counter = index;
                }


                if(config.effect=='slideLeft'){
                    var newSlideDir, oldSlideDir;
                    function slideDir(dir) {
                        newSlideDir = dir=='right' ? 'left' : 'right';
                        oldSlideDir = dir=='left' ? 'left' : 'right';
                    };


                    counter >= oldCounter ? slideDir('left') : slideDir('right') ;

                    $(gallery[counter]).clone().appendTo($cont).slideIt({
                        direction:newSlideDir,
                        changeSpeed:config.changeSpeed
                        });
                    if($cont.children().length>1){
                        $cont.children().eq(0).css('position','absolute').slideIt({
                            direction:oldSlideDir,
                            showHide:'hide',
                            changeSpeed:config.changeSpeed
                            },function(){
                            $(this).remove();
                        });
                    };
                } else if (config.effect=='fade') {
                    $(gallery[counter]).clone().appendTo($cont).hide().fadeIn(config.changeSpeed,function(){
                        if($.browser.msie)this.style.removeAttribute('filter');
                    });
                    if($cont.children().length>1){
                        $cont.children().eq(0).css('position','absolute').fadeOut(config.changeSpeed,function(){
                            $(this).remove();
                        });
                    };
                } else if (config.effect=='none') {
                    $(gallery[counter]).clone().appendTo($cont);
                    if($cont.children().length>1){
                        $cont.children().eq(0).css('position','absolute').remove();
                    };
                };

                // update active class on slide link
                if(config.links){
                    $('.'+uniqueClass+'-active').removeClass(uniqueClass+'-active jshowoff-active');
                    $('.'+uniqueClass+'-slidelinks a').eq(counter).addClass(uniqueClass+'-active jshowoff-active');
                };
            };

            // is the rotator currently in 'play' mode
            function isPlaying(){
                return $('.'+uniqueClass+'-play').hasClass('jshowoff-paused') ? false : true;
            };

            // start slide rotation on specified interval
            function play(src) {
                if(!isBusy()){
                    counter++;
                    transitionTo(gallery,counter);
                    /*if(src=='hover' || !isPlaying()) {
                        timer = setInterval(function(){
                            play();
                        },config.speed);
                    }*/
                    if(!isPlaying()){
                        $('.'+uniqueClass+'-play').text(config.controlText.pause).removeClass('jshowoff-paused '+uniqueClass+'-paused');
                    }
                };
            };

            // stop slide rotation
            function pause(src) {
                clearInterval(timer);
                if(!src || src=='playBtn') $('.'+uniqueClass+'-play').text(config.controlText.play).addClass('jshowoff-paused '+uniqueClass+'-paused');
                if(config.animatePause && src=='playBtn'){
                    $('<p class="'+uniqueClass+'-pausetext jshowoff-pausetext">'+config.controlText.pause+'</p>').css({
                        fontSize:'62%',
                        textAlign:'center',
                        position:'absolute',
                        top:'40%',
                        lineHeight:'100%',
                        width:'100%'
                    }).appendTo($wrap).addClass(uniqueClass+'pauseText').animate({
                        fontSize:'600%',
                        top:'30%',
                        opacity:0
                    }, {
                        duration:500,
                        complete:function(){
                            $(this).remove();
                        }
                    });
            }
        };

        // load the next slide
        function next() {
            goToAndPause(counter+1);
        };

        // load the previous slide
        function previous() {
            goToAndPause(counter-1);
        };

        // is the rotator in mid-transition
        function isBusy() {
            return $cont.children().length>1 ? true : false;
        };

        // load a specific slide
        function goToAndPause(index) {
            $cont.children().stop(true,true);
            if((counter != index) || ((counter == index) && isBusy())){
                if(isBusy()) $cont.children().eq(0).remove();
                transitionTo(gallery,index);
                pause();
            };
        };

        // load images into memory
        function preloadImg() {
            $(gallery).each(function(i){
                $(this).find('img').each(function(i){
                    preloadedImg[i] = $('<img>').attr('src',$(this).attr('src'));
                });
            });
        };

        // generate and add play/pause, prev, next controls
        function addControls() {
            $wrap.append('<p class="jshowoff-controls '+uniqueClass+'-controls"><a class="jshowoff-play '+uniqueClass+'-play" href="#null">'+config.controlText.pause+'</a> <a class="jshowoff-prev '+uniqueClass+'-prev" href="#null">'+config.controlText.previous+'</a> <a class="jshowoff-next '+uniqueClass+'-next" href="#null">'+config.controlText.next+'</a></p>');
            $('.'+uniqueClass+'-controls a').each(function(){
                if($(this).hasClass('jshowoff-play')) $(this).click(function(){
                    isPlaying() ? pause('playBtn') : play();
                    return false;
                } );
                if($(this).hasClass('jshowoff-prev')) $(this).click(function(){
                    previous();
                    return false;
                });
                if($(this).hasClass('jshowoff-next')) $(this).click(function(){
                    next();
                    return false;
                });

            });
        };

        // generate and add slide links
        function addSlideLinks() {
            $wrap.append('<p class="jshowoff-slidelinks '+uniqueClass+'-slidelinks"></p>');
            $.each(gallery, function(i, val) {
                var linktext = $(this).attr('title') != '' ? $(this).attr('title') : i+1;
                $('<a class="jshowoff-slidelink-'+i+' '+uniqueClass+'-slidelink-'+i+'" href="#null">'+linktext+'</a>').bind('click', {
                    index:i
                }, function(e){
                    goToAndPause(e.data.index);
                    return false;
                }).appendTo('.'+uniqueClass+'-slidelinks');
            });
        };


        // end .each
        });

    return this;

// end .jshowoff
};

// end closure
})(jQuery);




(function($) {

    $.fn.slideIt = function(settings,callback) {

        // default global vars
        var config = {
            direction : 'left',
            showHide : 'show',
            changeSpeed : 600
        };

        // merge default global variables with custom variables, modifying 'config'
        if (settings) $.extend(config, settings);

        this.each(function(i) {
            $(this).css({
                left:'auto',
                right:'auto',
                top:'auto',
                bottom:'auto'
            });
            var measurement = (config.direction == 'left') || (config.direction == 'right') ? $(this).outerWidth() : $(this).outerHeight();
            var startStyle = {};
            startStyle['position'] = $(this).css('position') == 'static' ? 'relative' : $(this).css('position');
            startStyle[config.direction] = (config.showHide == 'show') ? '-'+measurement+'px' : 0;
            var endStyle = {};
            endStyle[config.direction] = config.showHide == 'show' ? 0 : '-'+measurement+'px';
            $(this).css(startStyle).animate(endStyle,config.changeSpeed,callback);
        // end .each
        });

        return this;

    // end .slideIt
    };

// end closure
})(jQuery);