// Find search engine referrer for keyword highlight
if(document.referrer){
  [ '.*search\\.naver.*',
    'search\\.empas.*',
    '.*search\\.daum.*',
    'search\\.paran.*',
    'google.*',
    '.*search\\.yahoo.*',
    'search\\.msn.*',
    'search\\.live\\.',
    'search\\.aol.*',
    'ask\\.com',
    'altavista.*',
    'feedster.*',
    'search\\.lycos\\.',
    'alltheweb\\.',
    'technorati\\.com/.*',
    'dogpile\\.com/info\\.dogpl/search/web/'
  ].each(function(engine){
    engine = '^http://(www\\.)?' + engine;
    if(document.referrer.match(engine)){
      var script = document.createElement ( 'script' );
      script.type = 'text/javascript';
      script.src = '/script/hilight.js'; // set your javascript path
      document.getElementsByTagName('head')[0].appendChild(script);
      script = null;
      throw $break;
    }        
  });
}