// Allgemeines PopUp
function popup(page,x,y,s,r) {
  if (!s) { s = "1" }
  if (!r) { r = "1" }
  titel = x +""+ y;
  PopWindow=window.open(page,titel,"scrollbars="+s+",resizable="+r+",width="+x+",height="+y);
  PopWindow.focus();
}

// Foto-Popup
function showfoto(id) {
  popup('showfoto.php?id='+id,530,460,0,1);
}