//*****************************************
function doGA()
//*****************************************
{
  pageTracker._trackPageview('/EXTERNAL_LINK_AND_DOC/'+ this.href);
}

//*****************************************
function externalLinkGA()
//*****************************************
{
  var atag = document.getElementsByTagName('a');
  
  for (var i=0; i<atag.length; i++){
     var target = atag[i].target;
     if (target.match('_blank')){
      atag[i].onclick = doGA;
     }
  }
}

externalLinkGA();