function popup(mylink) {
  if (! window.focus)return true;
  var href;
  if (typeof(mylink) == 'string')
     href=mylink;
  else
     href=mylink.href;
  var pop = window.open(href, 'eventinfo', 'width=450,height=380,scrollbars=yes');
  pop.creator = self;
  pop.focus();
  return false;
}