function externaliseLinks()
{
  if( externLinkOldLoad != null && typeof( externLinkOldLoad ) == "function" )
  {
    externLinkOldLoad();
    externLinkOldLoad = null;
  }

  if( !document.getElementsByTagName )
  {
    return;
  }

  var anchors = document.getElementsByTagName( "a" );

  for( var i = 0 ; i < anchors.length ; i++ )
  {
    if( anchors[i].getAttribute( "href" ) && anchors[i].getAttribute( "rel" ) == "external" )
    {
      anchors[i].target = "_blank";
      anchors[i].title += " (External Link - Opens in new Window)";
    }
  }
}

var externLinkOldLoad = window.onload;
window.onload = externaliseLinks;