function show_detail(section, num) {
   detail_page = "PU_" + section + "/" + section + "_" + num + ".html";
   DetailWin = window.open(detail_page,'Detailansicht','width=640,height=460,left=20,top=20, toolbar=No,location=No,scrollbars=No,status=No,resizable=No,fullscreen=No');
}