Javascript - Is Something Wrong In This Spell Checking Using Jquery

<script type="text/javascript">
// check the spelling on a textarea
$("#check-textarea").click(function (e) {
e.preventDefault();
$(".loading").show();
$("#text-content")
.spellChecker({
lang: "en",
engine: "google",
suggestBoxPosition: "above"
})
.spellChecker('check', function (result) {
// spell checker has finished checking words
$(".loading").hide();
// if result is true then there are no badly spelt words
if (result) {
alert('There are no incorrectly spelt words.');
}
});
});
</script>

I am getting Error Message Object Does not support this property or method..

I used this link.. [URL]