(function($) {
	$.fn.slide_img = function(options) {
        options = $.extend( {
            next:'.slide_img_next',
            prev:'.slide_img_prev'
        }, options);
		var container = $(this);
		var totale = container.find("img").size();
        if (totale <= 1){
            $(options.prev).remove();
            $(options.next).remove();
        }
		var current = 0;
        $(options.next).click(function(){
            current++;
			if (current >= totale) current = 0;
			ch(container,current);
            return false;
        });
        $(options.prev).click(function(){
			current--;
			if (current < 0) current = totale-1;
			ch(container,current);
            return false;
        });
		return container;
	};
})(jQuery);

var ch = function(container,current){
    container.find("img").filter(":eq("+current+")").fadeIn("slow").end().not(":eq("+current+")").hide();
}