function echomail() {  
  var A = 'mailto:';
  var B = 'sir_emak'; 
  var C = '@'; 
  var D = 'go2.pl'; 
  document.write('<a href="'+[A]+[B]+[C]+[D]+'">'+[B]+[C]+[D]+'</a>'); 
} 

function echolink() { 
  var E = 'opistransf'; 
  var F = 'opis programu';
  document.write('<a rel="nofollow" href="'+[E]+'.pdf"  target="_blank">'+[F]+'</a>');
}