js_msg_no_user_name = "Please specify your name";
js_msg_no_user_email = "Please specify your e-mail";
js_msg_no_friend_email = "Please specify your friend`s email";

function check_subscribe_controls()
{
  if (window.document.subscribeform._name.value.length==0)
  {
    window.document.subscribeform._name.focus();
    alert(js_msg_no_user_name);
    return;
  }
  if (window.document.subscribeform._email.value.length==0)
  {
    window.document.subscribeform._email.focus();
    alert(js_msg_no_user_email);
    return;
  }
  window.document.subscribeform.submit();
}

function check_unsubscribe_controls()
{
  if (window.document.unsubscribeform._email.value.length==0)
  {
    window.document.unsubscribeform._email.focus();
    alert(js_msg_no_user_email);return;
  }
  window.document.unsubscribeform.submit();
}

function check_recommend_controls()
{
  if (window.document.recommendform._recommended_by_name.value.length==0)
  {
    window.document.recommendform._recommended_by_name.focus();
    alert(js_msg_no_user_name);
    return;
  }
  if (window.document.recommendform._recommended_by_email.value.length==0)
  {
    window.document.recommendform._recommended_by_email.focus();
    alert(js_msg_no_user_email);
    return;
  }
  if (window.document.recommendform._friend_email.value.length==0)
  {
    window.document.recommendform._friend_email.focus();
    alert(js_msg_no_friend_email);
    return;
  }
  window.document.recommendform.submit();
}