function make_ddi_links_blank ()
{
  if (document.getElementsByTagName)
    {
      var atags = document.getElementsByTagName ('a');
      if (atags.length == 0) atags = document.getElementsByTagName ('A');
      for (var idx = 0; idx < atags.length; ++idx)
	{
	  var hostname = atags[idx].hostname;
	  if (hostname && hostname != location.hostname)
	    atags[idx].target = '_blank';
	}
    }
}
add_normal_handler (window, 'load', make_ddi_links_blank);