function jsExtLink(url,target){
  if(target=='_blank') w = window.open();
  else w = window;
  w.document.write('<meta http-equiv="refresh" content="0;url='+url+'">');
  w.document.close();
  return false;
  //<a href="javascript:void(0);" onclick="jsLink('http://example.com/', '_blank')">anchor</a>
};