impressum_open = function () {
  window.open('/impressum', 'Impressum', 'width=600, height=500, menubar=yes, toolbar=yes, scrollbars=yes, resizable=yes').focus();
  return false;
}
impressum_over = function () {
 window.status='p-portal Impressum'; 
 return true;
 } 
impressum_out = function () {
  window.status=''; 
  return true;}