italian dumb newbie needs help

italian dumb newbie needs help

hi there,
I'm so sorry I have to ask help for this..I'm feeling so dumb,
please could someone tell me what I'm doing wrong with this stupid thing?

<html>
  <div class="wrapper_tasto">
      <div class="pretasto">Home</div>
      <div class="tasto"><a href="ancore.html">Home</a></div>
    </div>
</html>

<script>
  $(document).ready(function () {
    $('.wrapper_tasto').hover(
function () {
$(".pretasto").animate({ 
    marginLeft: "-300px",
  }, 200, easeOout ); },
    function () {
$(".pretasto").animate({ 
    marginLeft: "0px",
  }, 200, easeOut ); };
});
</script>


thanks in advice!!!!