function bildwechsel (pos) {
	var npos = -(565 * pos) + 565
   $('#bildercontainer').css({left: npos});
   listenformatierung(pos)
};

function listenformatierung (ele) {
	$(".galimg").css("background-image","url(../nav/img_off.png)");
	$("#item_"+ele).css("background-image","url(../nav/img_on.png)");
	}