function checkDetails(emailForm) {

   if (emailForm.name.value == '') {

      alert('You must enter your name');

      return false;

   } else {

      if (emailForm.email.value.indexOf('@') == -1) {

	 alert('You must supply a valid email address');

	 return false;

      } else {

	 if (emailForm.comments.value == '') {

	    alert('Please enter some comments');

	    return false;

	 } else {

	    return true;

	 }

      }

   }

}



function checkSearch(searchForm) {

   if (searchForm.query.value == '') {

      alert('You must supply something to search on');

      return false;

   } else 

      return true;

}