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

		this.each(function(){ 	

			//setting array
			var settings = {
				speed: 'normal',
				timeout: 2000,
				type: 'sequence',
				containerheight: 'auto',
				runningclass: 'fnslideshow'
			};

			//Falls Optionen angegeben wurden - Extend ausführen
			if(options) {
				$.extend(settings, options);
			}

			//Die Elemente der Slideshow (aktuell nur li, div und img möglich)
			var elements = $(this).children().filter("img, li, div");

			if (elements.length > 1) {

				//CSS für den Container anpassen
				$(this).css('position', 'relative');		
				$(this).css('height', settings.containerheight);
				$(this).addClass(settings.runningclass);

				//Alle Slideshow Elemente durchgehen
				for ( var i = 0; i < elements.length; i++ ) {
					$(elements[i]).css('z-index', String(elements.length-i)).css('position', 'absolute');
					$(elements[i]).hide();
				};

				//Geordnete Reihenfolge - Start
				if (settings.type == 'sequence') {
					setTimeout(function(){
						$.fnslideshow.next(elements, settings, 1, 0, 0);
					}, settings.timeout);					
				//Zufällige Abfolge (random) - Start
				} else {
					setTimeout(function(){
						do { current = Math.floor ( Math.random ( ) * ( elements.length ) ); } while ( current == 0 )
						$.fnslideshow.next(elements, settings, current, 0, 0);
					}, settings.timeout);
				};
				
				//Erstes Element anzeigen
				$(elements[0]).show();
			};
		});
	};


	$.fnslideshow = function() {}
	$.fnslideshow.next = function (elements, settings, current, last, savetohide) {

		//Alle Slideshow Elemente durchgehen
		for ( var i = 0; i < elements.length; i++ ) {
			$(elements[i]).css('z-index', 0);
		};

		//Animation für fade anwerfen		
		$(elements[current]).css('z-index', 1);
		$(elements[current]).fadeIn(settings.speed);

		//Geordnete Reihenfolge
		if (settings.type == 'sequence') {
			//Aktuelles Element ist nicht das letzte Element
			if ((current + 1) < elements.length) {
				current = current + 1;
				last = current - 1;
			//Letztes Element
			} else {
				current = 0;
				last = elements.length - 1;
			};
		//Zufällige Abfolge (random)
		} else {
			last = current;
			while (current == last) {
				current = Math.floor(Math.random() * (elements.length));
			};
		};

		//Timeout Funktion (vorletztes Element verstecken und nächstes Element "abfahren")
		setTimeout((function(){$(elements[savetohide]).hide(); $.fnslideshow.next(elements, settings, current, last, last);}), settings.timeout);		
	};

})(jQuery);