function OpenWindow (Url,Title, Width, Height) {
  var win_opt= "toolbar=0,location=0,directories=0,status=0,menubar=0,";
  win_opt += "scrollbars=1,resizable=1,copyhistory=0,";
  win_opt += "width=" + Width + ",height=" + Height;
  newWindow = window.open('',Title,win_opt);
  if (newWindow != null) {
    if (newWindow.opener == null)
      newWindow.opener = self;
    newWindow.location.href = Url;
    if (newWindow.focus) newWindow.focus();
  }
 }