can anyone help me why that code don't work

can anyone help me why that code don't work


<!doctype>
<html>
<head>
</script>
<script>
$(document).ready(Function(){
$('answer').hide();
$('h2').toggle(function(){
$(this).next('.answer').fadeIn();
},function(){
$(this).next('answer').fadeOut();
});
});
</script>
</head>
<body>
<h1>
FAQ
</h1>
<h2>
how many days are in one week?
</h2>
<p class=answer>
i think seven
</p>
<h2>
how many years are in one week?
</h2>
<p class=answer>
oh boy a year is much larger than a week
</p>
</body>
</html>