function Newsletter(akcja)
{
  if(document.newsletter.email.value == '')
  {
    alert('Wprowad¼ adres e-mail !');
    return false;
  }
  
  url = 'newsletter.php?email=' + document.newsletter.email.value + '&action=' + akcja;
  opcje	= '"toolbar=0,location=0,directories=0,status=0,statusbar=0,menubar=0,top=0,left=0,screenX=0,screenY=0,scrollbars=0,resizable=0,width=350, height=200';
  window.open(url, "", opcje);    
} 
document.write('<form name="newsletter" action="' + location.href + '" method="post">');
document.write(' <input type="text" name="email" value="" class="text" style="width:160px"> ');
document.write(' <input type="button" value="Dodaj" onClick="Newsletter(\'add\');" class="formButton"> ');
document.write(' <input type="button" value="Usuń" onClick="Newsletter(\'del\');" class="formButton">');
document.write('</form>');