function checkForm ( form )
{
if (form.name.value == "") {
alert( "Please enter your Name." );
form.name.focus();
return false ;
}
if (form.email.value == "") {
alert( "Please enter your Email." );
form.email.focus();
return false ;
}
if (form.review.value == "") {
alert( "Please write a review." );
form.review.focus();
return false ;
}
if (form.frog.value == "") {
alert( "Please enter the answer to the question." );
form.frog.focus();
return false ;
}
if (form.frog.value != form.rabbit.value) {
alert( "Incorrect Answer. Try again." );
form.frog.focus();
return false ;
}
  return true ;
}