function is_email(email)
{
  var ret = false;

  if (email.length > 3)
    {
      var tmp_str = new String(email);
      var at_index = tmp_str.indexOf("@");

      if (at_index > 0)
	{
	  var dot_index = tmp_str.indexOf(".", at_index);

	  if ((dot_index > at_index + 1) && (tmp_str.length > dot_index + 1))
	    {
	      ret = true;
	    }
	}
    }

  return ret;
}

function submit_entry()
{
  var form = document.forms[0]

  if (! is_email(form.email_id.value))
    {
      alert("Please enter a valid email address");
      return false;
    }

  return true;
}

function submit_email_entry()
{
  var form = document.forms[0]

  if (! is_email(form.email_id.value))
    {
      alert("Please enter a valid email address");
      return false;
    }
  if (form.email_message.value.length == 0)
    {
      alert("Please type an email message");
      return false;
    }

  return true;
}

function submit_peer_entry()
{
  var form = document.forms[0]

  if (! is_email(form.email_id.value))
    {
      alert("Please enter a valid email address");
      return false;
    }

  var not_selected = true;

  if (form.med_free.checked == true) 
    { 
      not_selected = false; 
      form.med_free.value = "Med Free";
    }

  if (form.two_hundred_club.checked == true) 
    { 
      not_selected = false; 
      form.two_hundred_club.value = "200 Club";
    }

  if (not_selected)
    {
      alert("Please select a list to join");
      return false;
    }

  return true;
}

function submit_practitioner()
{
  var form = document.forms[0]

  if (! is_email(form.email_id.value))
    {
      alert("Please enter a valid email address");
      return false;
    }

  if (form.insurance.checked == true) 
    { 
      form.insurance.value = "YES";
    }
  else
    {
      form.insurance.value = "NO";
    }

  if (form.medical_aid.checked == true) 
    { 
      form.medical_aid.value = "YES";
    }
  else
    {
      form.medical_aid.value = "NO";
    }

  if (form.referrals.checked == true) 
    { 
      form.referrals.value = "YES";
    }
  else
    {
      form.referrals.value = "NO";
    }

  return true;
}