function email_checkForm(f)
{
	if(f.username.value == '')
	{
	  alert('Please be sure to type a valid e-mail address.');
	  f.username.focus();
	  return false;
	}
  else
  {
    if (f.username.value.indexOf('@') == -1)
	  { f.username.value += "@northwestu.edu"; }
	  
    if(f.password.value.length < 4)
  	{
  		alert("Please be sure to type a valid password.");
  		f.password.focus();
  		return false;
  	}
  	else
  	{ return true; }
  }
}