(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);