function isEmailAddr(email)
{
  var result = false
  var theStr = new String(email)
  var index = theStr.indexOf("@");
  if (index > 0)
  {
    var pindex = theStr.indexOf(".",index);
    if ((pindex > index+1) && (theStr.length > pindex+1))
	result = true;
  }
  return result;
}

function clear(f)
{
  f.reset();
}
function validateNewsletter(f)
{
  if (f.email.value == null || f.email.value == ("")) 
  {
    alert("Email Address was left blank.");
    f.email.focus();
    return;
  }  
  else if (!isEmailAddr(f.email.value))
  {
    alert("Please enter a complete email address in the form: yourname@yourdomain.com");
    f.email.focus();
    return;
  }
  else if (f.email.value.length < 3)
  {
    alert("Please enter at least 3 characters in the \"email\" field.");
    f.email.focus();
    return;
  }  
  else
    f.submit();
}