<html>
  <head>
    <title>Lhikeseks ajaks avanev aken</title>
  
    <script>
      function pisiteade(teade){
        aken=window.open("", "_blank", "height=200,width=200");
        aken.document.writeln(teade);
        aken.document.close();
        window.setTimeout("aken.close()", 5000);
      }
    </script>

  </head>
 <body>
  <form>
    <input type="button" value="Ava teade" 
           onClick="pisiteade('Tere tulemast');"> 
  </form>
 </body>
</html>