runtime error jscript object expected?

<script language="javascript" type="text/javascript" >
        $(document).ready(function() {
            $('#home').on('click', function() {
                $('div.panel').animate({
                    'width': 'show'
                }, 1000, function() {
                    $('div.home').fadeIn(500);
                });
            });



            $('span.close').on('click', function() {
                $('div.home').fadeOut(500, function() {
                    $('div.panel').animate({
                        'width': 'hide'
                    }, 1000);
                });
            });
        });

    </script>