(function($){
    $.fn.diaporama = function(options) {

        var defaults = {
            delay: 3,
            animationSpeed: "normal",
            controls:true
        };

        var options = $.extend(defaults, options);

        this.each(function(){

            var obj = $(this);


            if($(obj).find("li").length > 1){
                var inter = setInterval(function(){
                    nextElt(options)
                    }, (options.delay*1000));
                var sens = "right";
                var pause = false;

                $(obj).find("li").hide();
                $(obj).find("li:first-child").addClass("active").fadeIn(options.animationSpeed);

                // Controls

                if(options.controls)
                {
                    $(obj).after("<div class='diaporama_controls'><div class='btns'><a href='#' class='prev'>Prec.</a> <a href='#' class='pause'>Pause</a> <a href='#' class='next'>Suiv.</a></div></div>");

                    $(obj).siblings().find(".prev").click(function(){
                        clearInterval(inter);
                        prevElt(options);
                        if(!pause)
                            inter = setInterval(function(){
                                prevElt(options)
                                }, (options.delay*1000));
                        sens = "left";
                    });

                    $(obj).siblings().find(".next").click(function(){
                        clearInterval(inter);
                        nextElt(options);
                        if(!pause)
                            inter = setInterval(function(){
                                nextElt(options)
                                }, (options.delay*1000));
                        sens = "right";
                    });

                    $(obj).siblings().find(".pause").toggle(
                        function(){
                            $(this).removeClass("pause").addClass("play");
                            clearInterval(inter);
                            pause = true;
                        },
                        function(){
                            $(this).removeClass("play").addClass("pause");
                            inter = setInterval(function(){
                                (sens == "right")?nextElt(options):prevElt(options)
                                }, (options.delay*1000));
                            pause = false;
                        }
                        );
                }

                // Affiche l'élément suivant

                function nextElt(options)
                {
                    $(obj).find("li.active").fadeOut(options.animationSpeed);

                    if(!$(obj).find("li.active").is(":last-child"))
                    {
                        $(obj).find("li.active").next().addClass("active").prev().removeClass("active");
                        $(obj).find("li.active").fadeIn(options.animationSpeed);

                    }
                    else
                    {
                        $(obj).find("li:first-child").addClass("active").fadeIn(options.animationSpeed);
                        $(obj).find("li:last-child").removeClass("active");
                    }
                }

                // Affiche l'élément précédent

                function prevElt(options)
                {
                    $(obj).find("li.active").fadeOut(options.animationSpeed);

                    if(!$(obj).find("li.active").is(":first-child"))
                    {
                        $(obj).find("li.active").prev().addClass("active").next().removeClass("active");
                        $(obj).find("li.active").fadeIn(options.animationSpeed);

                    }
                    else
                    {
                        $(obj).find("li:last-child").addClass("active").fadeIn(options.animationSpeed);
                        $(obj).find("li:first-child").removeClass("active");
                    }
                }
            }
        });

        return this;
    };
})(jQuery);