function validateCommentForm(form){
   if(form.name.value==""){
	  alert("Please enter a name");
	  return false;
   }
   if(form.location.value==""){
	  alert("Please enter a location");
	  return false;
   }
   if(form.comment.value==""){
      alert("Please enter a comment");
      return false;
  }
  return true;
}

function validateMailingListForm(form){
   if(form.firstName.value==""){
	  alert("Please enter a first name");
	  return false;
   }

   if(form.surName.value==""){
	  alert("Please enter a surname");
	  return false;
   }
   if(form.email.value==""){
	  alert("Please enter an email");
	  return false;
   }
}