function validate_email(field,alerttxt)
{
with (field)
  {
  apos=value.indexOf("@");
  dotpos=value.lastIndexOf(".");
  if (apos<1||dotpos-apos<2)
    {alert(alerttxt);return false;}
  else {return true;}
  }
}

function validate(form)
{
	if( form.cfname.value == "" || form.cfemail.value == "" || form.cfcomments.value == "" ) 
   { 
	  document.getElementById('message').innerHTML = 'Please fill out name, email and a message.';
	  document.getElementById('message').style.display = 'block';
	  return false; 
   }
}