function showframe(id, top, left)
{
  var cssString = 'visibility: visible; top: '+top+'px; left: '+left+'px;'
  var element = document.getElementById(id);
  element.style.cssText = cssString;
  element.setAttribute('style',cssString);
	return false;
}

function hideframe(id)
{
  var cssString = 'visibility: hidden;';
  var element = window.parent.document.getElementById(id);
  element.style.cssText = cssString;
  element.setAttribute('style',cssString);
	return;
}

function write_popup_link(id, top, left, title)
{
  document.write('<a onclick="showframe(\''+id+'\', '+top+','+left+')" class="internal-link" title="'+title+'">More information</a>');
  return;
}