function validateComment() {
   theForm = document.getElementById('c_form');
   if(document.getElementById('c_name').value == "") {
      alert("Please fill in your name.");
      return false;
   }
   if(document.getElementById('c_comment').value == "") {
      alert("Please fill in a comment.");
      return false;
   }
   theForm.submit();
   return false;
}