function newslettervalidate()
{
  var email = document.getElementById("newsletteremail").value;
  if( email.indexOf('@')==-1 || email.indexOf('.')==-1 || email.indexOf(' ')!=-1 || email.length<7 || !email)
  {
    alert('Please correct the email address');
    document.getElementById("newsletteremail").focus();
    return false;
  }
  return true;
}

function newslettersubmit()
{
  if (newslettervalidate()) document.getElementById("newsletter").submit();
}