function checkFrameset(URI2) {
//  var Home="http://localhost/parson-russell/"
  var Home="http://home.arcor.de/parson-russell/"
  var HMain="index.htm"
  var HNav="nav/"
  if(!parent.MNav) location.href=Home+HMain+"?"+location.pathname+"&"+HNav+URI2
    else parent.MNav.location.href(Home+HNav+URI2);
}
    
function img_change(Name,Source)
 {window.document.images[Name].src = Source;}